/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/vogal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:47:32,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:47:32,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:47:32,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 06:47:32,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 06:47:32,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 06:47:32,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 06:47:32,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 06:47:32,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 06:47:32,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 06:47:32,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 06:47:32,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 06:47:32,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:47:32,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:47:32,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:47:32,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:47:32,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:47:32,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:47:32,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:47:32,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:47:32,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:47:32,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:47:32,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:47:32,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:47:32,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 06:47:32,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 06:47:32,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 06:47:32,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 06:47:32,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 06:47:32,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 06:47:32,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 06:47:32,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 06:47:32,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 06:47:32,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 06:47:32,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 06:47:32,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 06:47:32,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 06:47:32,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 06:47:32,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:47:32,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:47:32,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:47:32,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:47:32,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:47:32,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:47:32,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:47:32,845 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:47:32,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:47:32,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:47:32,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:47:32,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:47:32,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:47:32,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:47:32,846 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:47:32,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:47:32,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:47:32,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:47:32,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:47:32,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:47:32,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:47:32,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:47:32,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:47:32,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:47:32,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:47:32,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:47:32,847 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:47:32,848 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:47:33,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:47:33,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:47:33,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:47:33,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:47:33,100 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:47:33,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/vogal-2.i [2021-04-16 06:47:33,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83ebef9d/c31ee460b6284b0aa76f5a9255f761eb/FLAG1e719e025 [2021-04-16 06:47:33,551 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:47:33,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i [2021-04-16 06:47:33,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83ebef9d/c31ee460b6284b0aa76f5a9255f761eb/FLAG1e719e025 [2021-04-16 06:47:33,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83ebef9d/c31ee460b6284b0aa76f5a9255f761eb [2021-04-16 06:47:33,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:47:33,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:47:33,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:47:33,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:47:33,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:47:33,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290bdb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33, skipping insertion in model container [2021-04-16 06:47:33,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:47:33,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:47:33,718 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i[808,821] [2021-04-16 06:47:33,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:47:33,755 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:47:33,764 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i[808,821] [2021-04-16 06:47:33,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:47:33,796 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:47:33,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33 WrapperNode [2021-04-16 06:47:33,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:47:33,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:47:33,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:47:33,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:47:33,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... [2021-04-16 06:47:33,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:47:33,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:47:33,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:47:33,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:47:33,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:47:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:47:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:47:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:47:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:47:34,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:47:34,050 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:47:34,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:47:34,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 06:47:34,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 06:47:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:47:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:47:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:47:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-04-16 06:47:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:47:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:47:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:47:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:47:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:47:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:47:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:47:34,384 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:47:34,384 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-04-16 06:47:34,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:47:34 BoogieIcfgContainer [2021-04-16 06:47:34,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:47:34,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:47:34,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:47:34,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:47:34,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:47:33" (1/3) ... [2021-04-16 06:47:34,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68321160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:47:34, skipping insertion in model container [2021-04-16 06:47:34,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:33" (2/3) ... [2021-04-16 06:47:34,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68321160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:47:34, skipping insertion in model container [2021-04-16 06:47:34,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:47:34" (3/3) ... [2021-04-16 06:47:34,393 INFO L111 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2021-04-16 06:47:34,397 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:47:34,400 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:47:34,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:47:34,433 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:47:34,433 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:47:34,433 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:47:34,433 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:47:34,433 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:47:34,433 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:47:34,433 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:47:34,433 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:47:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 06:47:34,450 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:34,450 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:34,451 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:34,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1427166884, now seen corresponding path program 1 times [2021-04-16 06:47:34,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:34,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972938675] [2021-04-16 06:47:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:34,504 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:34,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:34,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:34,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972938675] [2021-04-16 06:47:34,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:34,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 06:47:34,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265411761] [2021-04-16 06:47:34,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 06:47:34,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:34,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 06:47:34,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:47:34,673 INFO L87 Difference]: Start difference. First operand has 36 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:34,786 INFO L93 Difference]: Finished difference Result 64 states and 91 transitions. [2021-04-16 06:47:34,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 06:47:34,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-04-16 06:47:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:34,791 INFO L225 Difference]: With dead ends: 64 [2021-04-16 06:47:34,792 INFO L226 Difference]: Without dead ends: 29 [2021-04-16 06:47:34,794 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:47:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-04-16 06:47:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-04-16 06:47:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-04-16 06:47:34,833 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2021-04-16 06:47:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:34,834 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-04-16 06:47:34,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-04-16 06:47:34,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-04-16 06:47:34,835 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:34,835 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:34,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:47:34,836 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:34,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:34,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1183431677, now seen corresponding path program 1 times [2021-04-16 06:47:34,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:34,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014044371] [2021-04-16 06:47:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:34,850 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:34,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:34,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:34,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:34,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:34,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014044371] [2021-04-16 06:47:34,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:34,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 06:47:34,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986689920] [2021-04-16 06:47:34,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 06:47:34,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:34,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 06:47:34,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:47:34,969 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:35,061 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2021-04-16 06:47:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 06:47:35,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-04-16 06:47:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:35,065 INFO L225 Difference]: With dead ends: 65 [2021-04-16 06:47:35,065 INFO L226 Difference]: Without dead ends: 44 [2021-04-16 06:47:35,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:47:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-04-16 06:47:35,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2021-04-16 06:47:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-04-16 06:47:35,078 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19 [2021-04-16 06:47:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:35,078 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-04-16 06:47:35,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-04-16 06:47:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-04-16 06:47:35,080 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:35,081 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:35,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:47:35,084 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash -742748965, now seen corresponding path program 1 times [2021-04-16 06:47:35,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:35,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660692317] [2021-04-16 06:47:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:35,105 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:35,106 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:35,160 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:35,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:35,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:35,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660692317] [2021-04-16 06:47:35,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:35,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:47:35,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135599901] [2021-04-16 06:47:35,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:47:35,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:35,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:47:35,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:35,220 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:35,310 INFO L93 Difference]: Finished difference Result 80 states and 106 transitions. [2021-04-16 06:47:35,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:47:35,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-04-16 06:47:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:35,311 INFO L225 Difference]: With dead ends: 80 [2021-04-16 06:47:35,311 INFO L226 Difference]: Without dead ends: 59 [2021-04-16 06:47:35,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-04-16 06:47:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2021-04-16 06:47:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-04-16 06:47:35,316 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 21 [2021-04-16 06:47:35,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:35,316 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-04-16 06:47:35,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-04-16 06:47:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-16 06:47:35,317 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:35,317 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:35,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:47:35,317 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:35,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:35,317 INFO L82 PathProgramCache]: Analyzing trace with hash -671441351, now seen corresponding path program 2 times [2021-04-16 06:47:35,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:35,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110933478] [2021-04-16 06:47:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:35,322 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:35,323 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:35,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,411 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:35,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:35,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:35,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110933478] [2021-04-16 06:47:35,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:35,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:47:35,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723480778] [2021-04-16 06:47:35,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:47:35,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:35,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:47:35,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:47:35,460 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:35,587 INFO L93 Difference]: Finished difference Result 95 states and 127 transitions. [2021-04-16 06:47:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:47:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-04-16 06:47:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:35,589 INFO L225 Difference]: With dead ends: 95 [2021-04-16 06:47:35,590 INFO L226 Difference]: Without dead ends: 74 [2021-04-16 06:47:35,591 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:47:35,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-04-16 06:47:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 34. [2021-04-16 06:47:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-04-16 06:47:35,603 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 23 [2021-04-16 06:47:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:35,604 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-04-16 06:47:35,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,604 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-04-16 06:47:35,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-16 06:47:35,605 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:35,605 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:35,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 06:47:35,605 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash -864301033, now seen corresponding path program 3 times [2021-04-16 06:47:35,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:35,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622637577] [2021-04-16 06:47:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:35,611 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:35,612 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:35,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,676 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:35,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:35,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:35,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622637577] [2021-04-16 06:47:35,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:35,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:47:35,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287632789] [2021-04-16 06:47:35,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:47:35,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:35,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:47:35,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:35,721 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:35,869 INFO L93 Difference]: Finished difference Result 110 states and 148 transitions. [2021-04-16 06:47:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:47:35,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-04-16 06:47:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:35,870 INFO L225 Difference]: With dead ends: 110 [2021-04-16 06:47:35,870 INFO L226 Difference]: Without dead ends: 89 [2021-04-16 06:47:35,870 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-04-16 06:47:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 36. [2021-04-16 06:47:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-04-16 06:47:35,874 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 25 [2021-04-16 06:47:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:35,874 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-04-16 06:47:35,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-04-16 06:47:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-16 06:47:35,874 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:35,875 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:35,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-16 06:47:35,875 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:35,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1518861707, now seen corresponding path program 4 times [2021-04-16 06:47:35,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:35,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808259388] [2021-04-16 06:47:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:35,884 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:35,885 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:35,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:35,930 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:35,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:35,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:35,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:35,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:35,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808259388] [2021-04-16 06:47:35,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:35,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:47:35,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218691418] [2021-04-16 06:47:35,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:47:35,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:35,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:47:35,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:35,977 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:36,197 INFO L93 Difference]: Finished difference Result 125 states and 169 transitions. [2021-04-16 06:47:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:47:36,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-04-16 06:47:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:36,199 INFO L225 Difference]: With dead ends: 125 [2021-04-16 06:47:36,199 INFO L226 Difference]: Without dead ends: 104 [2021-04-16 06:47:36,199 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-04-16 06:47:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 38. [2021-04-16 06:47:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-04-16 06:47:36,202 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 27 [2021-04-16 06:47:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:36,203 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-04-16 06:47:36,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-04-16 06:47:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-04-16 06:47:36,203 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:36,203 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:36,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-16 06:47:36,203 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:36,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:36,204 INFO L82 PathProgramCache]: Analyzing trace with hash 808523091, now seen corresponding path program 5 times [2021-04-16 06:47:36,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:36,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789504392] [2021-04-16 06:47:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:36,208 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:36,209 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:36,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,268 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:36,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:36,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:36,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789504392] [2021-04-16 06:47:36,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:36,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:36,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184471568] [2021-04-16 06:47:36,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:36,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:36,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:36,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:36,309 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:36,576 INFO L93 Difference]: Finished difference Result 140 states and 190 transitions. [2021-04-16 06:47:36,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-04-16 06:47:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:36,577 INFO L225 Difference]: With dead ends: 140 [2021-04-16 06:47:36,577 INFO L226 Difference]: Without dead ends: 119 [2021-04-16 06:47:36,578 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-04-16 06:47:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 40. [2021-04-16 06:47:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2021-04-16 06:47:36,581 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 29 [2021-04-16 06:47:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:36,581 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2021-04-16 06:47:36,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2021-04-16 06:47:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-04-16 06:47:36,582 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:36,582 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:36,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-16 06:47:36,582 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:36,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:36,582 INFO L82 PathProgramCache]: Analyzing trace with hash -252647247, now seen corresponding path program 6 times [2021-04-16 06:47:36,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:36,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529520854] [2021-04-16 06:47:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:36,586 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:36,587 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:36,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:36,672 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:36,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:36,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:36,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:36,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:36,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529520854] [2021-04-16 06:47:36,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:36,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:47:36,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399970549] [2021-04-16 06:47:36,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:47:36,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:36,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:47:36,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:36,726 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:37,070 INFO L93 Difference]: Finished difference Result 155 states and 211 transitions. [2021-04-16 06:47:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:47:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-04-16 06:47:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:37,072 INFO L225 Difference]: With dead ends: 155 [2021-04-16 06:47:37,072 INFO L226 Difference]: Without dead ends: 134 [2021-04-16 06:47:37,073 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-04-16 06:47:37,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 42. [2021-04-16 06:47:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-04-16 06:47:37,085 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 31 [2021-04-16 06:47:37,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:37,085 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-04-16 06:47:37,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-04-16 06:47:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-04-16 06:47:37,085 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:37,085 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:37,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-16 06:47:37,086 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:37,086 INFO L82 PathProgramCache]: Analyzing trace with hash -2130092913, now seen corresponding path program 7 times [2021-04-16 06:47:37,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:37,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228203916] [2021-04-16 06:47:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:37,092 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:37,094 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:37,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,171 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:37,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:37,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:37,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228203916] [2021-04-16 06:47:37,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:37,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:47:37,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672745299] [2021-04-16 06:47:37,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:47:37,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:37,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:47:37,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:37,218 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:37,626 INFO L93 Difference]: Finished difference Result 170 states and 232 transitions. [2021-04-16 06:47:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:47:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-04-16 06:47:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:37,627 INFO L225 Difference]: With dead ends: 170 [2021-04-16 06:47:37,627 INFO L226 Difference]: Without dead ends: 149 [2021-04-16 06:47:37,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-04-16 06:47:37,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 44. [2021-04-16 06:47:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-04-16 06:47:37,631 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2021-04-16 06:47:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:37,631 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-04-16 06:47:37,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-04-16 06:47:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-04-16 06:47:37,632 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:37,632 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:37,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-16 06:47:37,632 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:37,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1825853677, now seen corresponding path program 8 times [2021-04-16 06:47:37,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:37,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891240822] [2021-04-16 06:47:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:37,636 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:37,637 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:37,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:37,716 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:37,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:37,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:37,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:37,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:37,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891240822] [2021-04-16 06:47:37,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:37,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:47:37,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190558633] [2021-04-16 06:47:37,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:47:37,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:37,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:47:37,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:37,774 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:38,256 INFO L93 Difference]: Finished difference Result 185 states and 253 transitions. [2021-04-16 06:47:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:47:38,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-04-16 06:47:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:38,257 INFO L225 Difference]: With dead ends: 185 [2021-04-16 06:47:38,257 INFO L226 Difference]: Without dead ends: 164 [2021-04-16 06:47:38,258 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-04-16 06:47:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 46. [2021-04-16 06:47:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-04-16 06:47:38,266 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 35 [2021-04-16 06:47:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:38,267 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-04-16 06:47:38,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-04-16 06:47:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-04-16 06:47:38,271 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:38,271 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:38,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-16 06:47:38,271 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:38,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1850497589, now seen corresponding path program 9 times [2021-04-16 06:47:38,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:38,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715784189] [2021-04-16 06:47:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:38,275 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:38,277 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:38,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:38,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:38,398 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:38,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:38,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:38,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:38,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:38,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715784189] [2021-04-16 06:47:38,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:38,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:47:38,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472908235] [2021-04-16 06:47:38,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:47:38,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:38,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:47:38,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:38,439 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:38,974 INFO L93 Difference]: Finished difference Result 200 states and 274 transitions. [2021-04-16 06:47:38,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:47:38,974 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-04-16 06:47:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:38,975 INFO L225 Difference]: With dead ends: 200 [2021-04-16 06:47:38,975 INFO L226 Difference]: Without dead ends: 179 [2021-04-16 06:47:38,976 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 97.7ms TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:38,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-04-16 06:47:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 48. [2021-04-16 06:47:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-04-16 06:47:38,988 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 37 [2021-04-16 06:47:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:38,990 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-04-16 06:47:38,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-04-16 06:47:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-04-16 06:47:38,990 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:38,991 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:38,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-16 06:47:38,991 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash -65979607, now seen corresponding path program 10 times [2021-04-16 06:47:38,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:38,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328414139] [2021-04-16 06:47:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:38,997 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:38,998 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:39,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:39,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:39,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328414139] [2021-04-16 06:47:39,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:39,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:47:39,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849052576] [2021-04-16 06:47:39,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:47:39,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:39,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:47:39,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:39,101 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,171 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2021-04-16 06:47:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:47:39,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-04-16 06:47:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,172 INFO L225 Difference]: With dead ends: 72 [2021-04-16 06:47:39,172 INFO L226 Difference]: Without dead ends: 67 [2021-04-16 06:47:39,173 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-04-16 06:47:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2021-04-16 06:47:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-04-16 06:47:39,175 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 39 [2021-04-16 06:47:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,176 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-04-16 06:47:39,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-04-16 06:47:39,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-04-16 06:47:39,176 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,176 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:39,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-16 06:47:39,176 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2124486910, now seen corresponding path program 1 times [2021-04-16 06:47:39,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224771186] [2021-04-16 06:47:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,182 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,183 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,216 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:39,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:39,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:39,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224771186] [2021-04-16 06:47:39,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:39,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:47:39,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281935457] [2021-04-16 06:47:39,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:47:39,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:39,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:47:39,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:39,250 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,297 INFO L93 Difference]: Finished difference Result 113 states and 151 transitions. [2021-04-16 06:47:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:47:39,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-04-16 06:47:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,297 INFO L225 Difference]: With dead ends: 113 [2021-04-16 06:47:39,298 INFO L226 Difference]: Without dead ends: 84 [2021-04-16 06:47:39,298 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-04-16 06:47:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2021-04-16 06:47:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2021-04-16 06:47:39,301 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 45 [2021-04-16 06:47:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,301 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2021-04-16 06:47:39,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,301 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2021-04-16 06:47:39,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-04-16 06:47:39,302 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,302 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:39,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-16 06:47:39,302 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1273709643, now seen corresponding path program 2 times [2021-04-16 06:47:39,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601604448] [2021-04-16 06:47:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,307 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,308 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,349 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:39,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:39,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:39,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601604448] [2021-04-16 06:47:39,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:39,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:47:39,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922941008] [2021-04-16 06:47:39,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:47:39,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:39,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:47:39,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:47:39,378 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,445 INFO L93 Difference]: Finished difference Result 141 states and 183 transitions. [2021-04-16 06:47:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:47:39,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-04-16 06:47:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,446 INFO L225 Difference]: With dead ends: 141 [2021-04-16 06:47:39,446 INFO L226 Difference]: Without dead ends: 96 [2021-04-16 06:47:39,448 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:47:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-04-16 06:47:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-04-16 06:47:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.2530120481927711) internal successors, (104), 83 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-04-16 06:47:39,453 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 48 [2021-04-16 06:47:39,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,453 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-04-16 06:47:39,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-04-16 06:47:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-16 06:47:39,454 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,454 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:39,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-16 06:47:39,454 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash -370162142, now seen corresponding path program 3 times [2021-04-16 06:47:39,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92699813] [2021-04-16 06:47:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,459 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,459 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,517 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:39,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:39,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:39,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92699813] [2021-04-16 06:47:39,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:39,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:47:39,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488897681] [2021-04-16 06:47:39,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:47:39,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:39,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:47:39,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:39,548 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,640 INFO L93 Difference]: Finished difference Result 165 states and 215 transitions. [2021-04-16 06:47:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:47:39,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-04-16 06:47:39,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,641 INFO L225 Difference]: With dead ends: 165 [2021-04-16 06:47:39,641 INFO L226 Difference]: Without dead ends: 108 [2021-04-16 06:47:39,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-04-16 06:47:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2021-04-16 06:47:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.263157894736842) internal successors, (120), 95 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2021-04-16 06:47:39,648 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 51 [2021-04-16 06:47:39,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,648 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2021-04-16 06:47:39,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,649 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2021-04-16 06:47:39,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-04-16 06:47:39,649 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,649 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:39,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-16 06:47:39,649 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash 653396117, now seen corresponding path program 4 times [2021-04-16 06:47:39,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223520067] [2021-04-16 06:47:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,655 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,656 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,713 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:39,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:39,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:39,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223520067] [2021-04-16 06:47:39,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:39,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:47:39,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687210634] [2021-04-16 06:47:39,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:47:39,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:39,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:47:39,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:39,748 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:39,847 INFO L93 Difference]: Finished difference Result 189 states and 247 transitions. [2021-04-16 06:47:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:47:39,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-04-16 06:47:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:39,848 INFO L225 Difference]: With dead ends: 189 [2021-04-16 06:47:39,848 INFO L226 Difference]: Without dead ends: 120 [2021-04-16 06:47:39,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-04-16 06:47:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2021-04-16 06:47:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.2710280373831775) internal successors, (136), 107 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 140 transitions. [2021-04-16 06:47:39,860 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 140 transitions. Word has length 54 [2021-04-16 06:47:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:39,860 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 140 transitions. [2021-04-16 06:47:39,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 140 transitions. [2021-04-16 06:47:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-04-16 06:47:39,860 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:39,860 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:39,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-16 06:47:39,860 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:39,861 INFO L82 PathProgramCache]: Analyzing trace with hash -790311614, now seen corresponding path program 5 times [2021-04-16 06:47:39,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:39,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702837371] [2021-04-16 06:47:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:39,866 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:39,866 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:39,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:39,934 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:39,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:39,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:39,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:39,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:39,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702837371] [2021-04-16 06:47:39,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:39,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:39,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909722893] [2021-04-16 06:47:39,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:39,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:39,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:39,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:39,973 INFO L87 Difference]: Start difference. First operand 112 states and 140 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:40,116 INFO L93 Difference]: Finished difference Result 213 states and 279 transitions. [2021-04-16 06:47:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-04-16 06:47:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:40,117 INFO L225 Difference]: With dead ends: 213 [2021-04-16 06:47:40,117 INFO L226 Difference]: Without dead ends: 132 [2021-04-16 06:47:40,118 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-04-16 06:47:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2021-04-16 06:47:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 119 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 156 transitions. [2021-04-16 06:47:40,123 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 156 transitions. Word has length 57 [2021-04-16 06:47:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:40,123 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 156 transitions. [2021-04-16 06:47:40,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 156 transitions. [2021-04-16 06:47:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-04-16 06:47:40,124 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:40,124 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:40,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-04-16 06:47:40,124 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:40,124 INFO L82 PathProgramCache]: Analyzing trace with hash -484823691, now seen corresponding path program 6 times [2021-04-16 06:47:40,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:40,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183383325] [2021-04-16 06:47:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:40,129 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:40,129 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:40,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,186 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:40,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:40,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:40,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183383325] [2021-04-16 06:47:40,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:40,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:47:40,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270285402] [2021-04-16 06:47:40,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:47:40,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:40,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:47:40,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:40,223 INFO L87 Difference]: Start difference. First operand 124 states and 156 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:40,371 INFO L93 Difference]: Finished difference Result 237 states and 311 transitions. [2021-04-16 06:47:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:47:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-04-16 06:47:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:40,372 INFO L225 Difference]: With dead ends: 237 [2021-04-16 06:47:40,372 INFO L226 Difference]: Without dead ends: 144 [2021-04-16 06:47:40,373 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-04-16 06:47:40,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 136. [2021-04-16 06:47:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.282442748091603) internal successors, (168), 131 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 172 transitions. [2021-04-16 06:47:40,378 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 172 transitions. Word has length 60 [2021-04-16 06:47:40,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:40,378 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 172 transitions. [2021-04-16 06:47:40,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,378 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 172 transitions. [2021-04-16 06:47:40,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-04-16 06:47:40,379 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:40,379 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:40,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-04-16 06:47:40,379 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:40,379 INFO L82 PathProgramCache]: Analyzing trace with hash -729809822, now seen corresponding path program 7 times [2021-04-16 06:47:40,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:40,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134566604] [2021-04-16 06:47:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:40,384 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:40,385 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:40,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,465 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:40,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:40,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:40,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134566604] [2021-04-16 06:47:40,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:40,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:47:40,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460826665] [2021-04-16 06:47:40,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:47:40,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:40,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:47:40,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:40,507 INFO L87 Difference]: Start difference. First operand 136 states and 172 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:40,680 INFO L93 Difference]: Finished difference Result 261 states and 343 transitions. [2021-04-16 06:47:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:47:40,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-04-16 06:47:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:40,681 INFO L225 Difference]: With dead ends: 261 [2021-04-16 06:47:40,681 INFO L226 Difference]: Without dead ends: 156 [2021-04-16 06:47:40,682 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-04-16 06:47:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2021-04-16 06:47:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.2867132867132867) internal successors, (184), 143 states have internal predecessors, (184), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 188 transitions. [2021-04-16 06:47:40,690 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 188 transitions. Word has length 63 [2021-04-16 06:47:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:40,691 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 188 transitions. [2021-04-16 06:47:40,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 188 transitions. [2021-04-16 06:47:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-04-16 06:47:40,691 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:40,691 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:40,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-04-16 06:47:40,691 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:40,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:40,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1962202539, now seen corresponding path program 8 times [2021-04-16 06:47:40,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:40,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656614079] [2021-04-16 06:47:40,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:40,698 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:40,699 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:40,785 INFO L142 QuantifierPusher]: treesize reduction 10, result has 67.7 percent of original size [2021-04-16 06:47:40,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:40,788 INFO L142 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-04-16 06:47:40,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:47:40,799 INFO L142 QuantifierPusher]: treesize reduction 12, result has 86.7 percent of original size [2021-04-16 06:47:40,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:47:40,803 INFO L142 QuantifierPusher]: treesize reduction 14, result has 73.1 percent of original size [2021-04-16 06:47:40,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:47:40,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:40,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656614079] [2021-04-16 06:47:40,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:40,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:47:40,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576738359] [2021-04-16 06:47:40,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:47:40,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:40,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:47:40,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:40,819 INFO L87 Difference]: Start difference. First operand 148 states and 188 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:40,872 INFO L93 Difference]: Finished difference Result 379 states and 495 transitions. [2021-04-16 06:47:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:47:40,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-04-16 06:47:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:40,873 INFO L225 Difference]: With dead ends: 379 [2021-04-16 06:47:40,873 INFO L226 Difference]: Without dead ends: 262 [2021-04-16 06:47:40,874 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:47:40,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-04-16 06:47:40,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 152. [2021-04-16 06:47:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.2857142857142858) internal successors, (189), 147 states have internal predecessors, (189), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 193 transitions. [2021-04-16 06:47:40,882 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 193 transitions. Word has length 66 [2021-04-16 06:47:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:40,882 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 193 transitions. [2021-04-16 06:47:40,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 193 transitions. [2021-04-16 06:47:40,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-04-16 06:47:40,882 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:40,882 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:40,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-04-16 06:47:40,883 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:40,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1992147995, now seen corresponding path program 1 times [2021-04-16 06:47:40,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:40,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050166242] [2021-04-16 06:47:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:40,906 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:40,907 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:40,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:40,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:40,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:40,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:40,996 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:40,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:41,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:41,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:41,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050166242] [2021-04-16 06:47:41,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:41,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:47:41,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737627761] [2021-04-16 06:47:41,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:47:41,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:41,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:47:41,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:41,040 INFO L87 Difference]: Start difference. First operand 152 states and 193 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:41,291 INFO L93 Difference]: Finished difference Result 244 states and 318 transitions. [2021-04-16 06:47:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:47:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-04-16 06:47:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:41,293 INFO L225 Difference]: With dead ends: 244 [2021-04-16 06:47:41,293 INFO L226 Difference]: Without dead ends: 183 [2021-04-16 06:47:41,293 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-04-16 06:47:41,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-04-16 06:47:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.2875816993464053) internal successors, (197), 153 states have internal predecessors, (197), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2021-04-16 06:47:41,301 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 67 [2021-04-16 06:47:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:41,301 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2021-04-16 06:47:41,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2021-04-16 06:47:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-04-16 06:47:41,302 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:41,302 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:41,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-04-16 06:47:41,302 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:41,303 INFO L82 PathProgramCache]: Analyzing trace with hash -480387238, now seen corresponding path program 1 times [2021-04-16 06:47:41,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:41,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829466978] [2021-04-16 06:47:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:41,316 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:41,317 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:41,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:41,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:41,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:41,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:47:41,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:41,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:41,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:41,524 INFO L142 QuantifierPusher]: treesize reduction 119, result has 68.8 percent of original size [2021-04-16 06:47:41,526 INFO L147 QuantifierPusher]: treesize reduction 20, result has 92.4 percent of original size 243 [2021-04-16 06:47:41,618 INFO L142 QuantifierPusher]: treesize reduction 139, result has 67.3 percent of original size [2021-04-16 06:47:41,622 INFO L147 QuantifierPusher]: treesize reduction 20, result has 93.0 percent of original size 266 [2021-04-16 06:47:41,682 INFO L142 QuantifierPusher]: treesize reduction 139, result has 67.5 percent of original size [2021-04-16 06:47:41,685 INFO L147 QuantifierPusher]: treesize reduction 20, result has 93.1 percent of original size 269 [2021-04-16 06:47:41,753 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:41,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:41,776 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:41,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:41,804 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:41,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:41,833 INFO L142 QuantifierPusher]: treesize reduction 109, result has 74.1 percent of original size [2021-04-16 06:47:41,835 INFO L147 QuantifierPusher]: treesize reduction 22, result has 92.9 percent of original size 290 [2021-04-16 06:47:41,937 INFO L142 QuantifierPusher]: treesize reduction 67, result has 68.7 percent of original size [2021-04-16 06:47:41,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-04-16 06:47:41,967 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.9 percent of original size [2021-04-16 06:47:41,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-04-16 06:47:41,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:41,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:42,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:42,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829466978] [2021-04-16 06:47:42,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:42,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:47:42,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659212042] [2021-04-16 06:47:42,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:47:42,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:42,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:47:42,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:47:42,010 INFO L87 Difference]: Start difference. First operand 158 states and 201 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:42,773 INFO L93 Difference]: Finished difference Result 235 states and 302 transitions. [2021-04-16 06:47:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:47:42,775 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-04-16 06:47:42,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:42,775 INFO L225 Difference]: With dead ends: 235 [2021-04-16 06:47:42,775 INFO L226 Difference]: Without dead ends: 171 [2021-04-16 06:47:42,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 796.7ms TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:47:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-04-16 06:47:42,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2021-04-16 06:47:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.284848484848485) internal successors, (212), 165 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2021-04-16 06:47:42,785 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 68 [2021-04-16 06:47:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:42,785 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2021-04-16 06:47:42,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:42,785 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2021-04-16 06:47:42,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-04-16 06:47:42,785 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:42,785 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:42,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-04-16 06:47:42,785 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:42,786 INFO L82 PathProgramCache]: Analyzing trace with hash -222221800, now seen corresponding path program 1 times [2021-04-16 06:47:42,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:42,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315871527] [2021-04-16 06:47:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:42,792 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:42,793 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:42,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:42,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:42,853 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.4 percent of original size [2021-04-16 06:47:42,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 320 [2021-04-16 06:47:42,882 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-16 06:47:42,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:42,889 INFO L142 QuantifierPusher]: treesize reduction 15, result has 92.9 percent of original size [2021-04-16 06:47:42,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-04-16 06:47:42,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:42,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:42,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:42,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:42,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315871527] [2021-04-16 06:47:42,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:42,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:42,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585633814] [2021-04-16 06:47:42,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:42,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:42,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:42,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:42,948 INFO L87 Difference]: Start difference. First operand 170 states and 216 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:43,057 INFO L93 Difference]: Finished difference Result 365 states and 473 transitions. [2021-04-16 06:47:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:43,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-04-16 06:47:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:43,059 INFO L225 Difference]: With dead ends: 365 [2021-04-16 06:47:43,059 INFO L226 Difference]: Without dead ends: 360 [2021-04-16 06:47:43,059 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:43,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-04-16 06:47:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 172. [2021-04-16 06:47:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.281437125748503) internal successors, (214), 167 states have internal predecessors, (214), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 218 transitions. [2021-04-16 06:47:43,072 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 218 transitions. Word has length 68 [2021-04-16 06:47:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:43,073 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 218 transitions. [2021-04-16 06:47:43,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 218 transitions. [2021-04-16 06:47:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-04-16 06:47:43,073 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:43,073 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:43,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-04-16 06:47:43,073 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:43,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:43,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1762866155, now seen corresponding path program 2 times [2021-04-16 06:47:43,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:43,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060785154] [2021-04-16 06:47:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:43,078 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:43,079 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:43,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:43,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:43,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:43,179 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-04-16 06:47:43,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:43,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:43,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:43,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060785154] [2021-04-16 06:47:43,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:43,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:47:43,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494440812] [2021-04-16 06:47:43,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:47:43,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:43,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:47:43,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:43,221 INFO L87 Difference]: Start difference. First operand 172 states and 218 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:43,472 INFO L93 Difference]: Finished difference Result 323 states and 419 transitions. [2021-04-16 06:47:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:47:43,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2021-04-16 06:47:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:43,473 INFO L225 Difference]: With dead ends: 323 [2021-04-16 06:47:43,473 INFO L226 Difference]: Without dead ends: 186 [2021-04-16 06:47:43,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-04-16 06:47:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2021-04-16 06:47:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.2716763005780347) internal successors, (220), 173 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 224 transitions. [2021-04-16 06:47:43,487 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 224 transitions. Word has length 70 [2021-04-16 06:47:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:43,487 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 224 transitions. [2021-04-16 06:47:43,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 224 transitions. [2021-04-16 06:47:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-04-16 06:47:43,487 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:43,487 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:43,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-04-16 06:47:43,487 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:43,488 INFO L82 PathProgramCache]: Analyzing trace with hash 225571355, now seen corresponding path program 3 times [2021-04-16 06:47:43,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:43,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199236611] [2021-04-16 06:47:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:43,491 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:43,493 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:43,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:43,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:43,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:43,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:47:43,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:43,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:43,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:43,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:43,639 INFO L142 QuantifierPusher]: treesize reduction 289, result has 24.3 percent of original size [2021-04-16 06:47:43,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:47:43,677 INFO L142 QuantifierPusher]: treesize reduction 235, result has 44.7 percent of original size [2021-04-16 06:47:43,678 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.5 percent of original size 170 [2021-04-16 06:47:43,726 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.1 percent of original size [2021-04-16 06:47:43,727 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.6 percent of original size 173 [2021-04-16 06:47:43,769 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:43,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:43,790 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:43,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:43,811 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:43,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:43,834 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:43,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:43,860 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:43,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:43,889 INFO L142 QuantifierPusher]: treesize reduction 131, result has 68.9 percent of original size [2021-04-16 06:47:43,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-04-16 06:47:43,988 INFO L142 QuantifierPusher]: treesize reduction 67, result has 68.7 percent of original size [2021-04-16 06:47:43,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-04-16 06:47:44,020 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.9 percent of original size [2021-04-16 06:47:44,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-04-16 06:47:44,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:44,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:44,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:44,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:44,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199236611] [2021-04-16 06:47:44,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:44,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:47:44,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252894435] [2021-04-16 06:47:44,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:47:44,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:44,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:47:44,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:47:44,053 INFO L87 Difference]: Start difference. First operand 178 states and 224 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:44,911 INFO L93 Difference]: Finished difference Result 236 states and 299 transitions. [2021-04-16 06:47:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:47:44,911 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-04-16 06:47:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:44,912 INFO L225 Difference]: With dead ends: 236 [2021-04-16 06:47:44,912 INFO L226 Difference]: Without dead ends: 197 [2021-04-16 06:47:44,913 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 782.3ms TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:47:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-04-16 06:47:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-04-16 06:47:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.2722513089005236) internal successors, (243), 191 states have internal predecessors, (243), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 247 transitions. [2021-04-16 06:47:44,930 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 247 transitions. Word has length 73 [2021-04-16 06:47:44,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:44,930 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 247 transitions. [2021-04-16 06:47:44,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 247 transitions. [2021-04-16 06:47:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-04-16 06:47:44,931 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:44,931 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:44,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-04-16 06:47:44,931 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:44,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:44,931 INFO L82 PathProgramCache]: Analyzing trace with hash -167455655, now seen corresponding path program 1 times [2021-04-16 06:47:44,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:44,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850800323] [2021-04-16 06:47:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:44,936 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:44,937 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:45,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:45,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:45,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:45,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:47:45,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:45,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:45,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:45,072 INFO L142 QuantifierPusher]: treesize reduction 289, result has 24.3 percent of original size [2021-04-16 06:47:45,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-16 06:47:45,098 INFO L142 QuantifierPusher]: treesize reduction 235, result has 44.7 percent of original size [2021-04-16 06:47:45,099 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.5 percent of original size 170 [2021-04-16 06:47:45,163 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.1 percent of original size [2021-04-16 06:47:45,164 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.6 percent of original size 173 [2021-04-16 06:47:45,208 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.0 percent of original size [2021-04-16 06:47:45,210 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 344 [2021-04-16 06:47:45,302 INFO L142 QuantifierPusher]: treesize reduction 131, result has 63.7 percent of original size [2021-04-16 06:47:45,303 INFO L147 QuantifierPusher]: treesize reduction 27, result has 88.3 percent of original size 203 [2021-04-16 06:47:45,339 INFO L142 QuantifierPusher]: treesize reduction 123, result has 59.9 percent of original size [2021-04-16 06:47:45,340 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.2 percent of original size 177 [2021-04-16 06:47:45,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:45,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:45,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850800323] [2021-04-16 06:47:45,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:45,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:47:45,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146750964] [2021-04-16 06:47:45,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:47:45,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:45,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:47:45,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:45,367 INFO L87 Difference]: Start difference. First operand 196 states and 247 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:45,845 INFO L93 Difference]: Finished difference Result 253 states and 320 transitions. [2021-04-16 06:47:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:47:45,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-04-16 06:47:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:45,846 INFO L225 Difference]: With dead ends: 253 [2021-04-16 06:47:45,846 INFO L226 Difference]: Without dead ends: 196 [2021-04-16 06:47:45,846 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 514.3ms TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:47:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-04-16 06:47:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-04-16 06:47:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.2670157068062826) internal successors, (242), 191 states have internal predecessors, (242), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 246 transitions. [2021-04-16 06:47:45,870 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 246 transitions. Word has length 73 [2021-04-16 06:47:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:45,870 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 246 transitions. [2021-04-16 06:47:45,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 246 transitions. [2021-04-16 06:47:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-04-16 06:47:45,872 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:45,872 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:45,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-04-16 06:47:45,872 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:45,872 INFO L82 PathProgramCache]: Analyzing trace with hash -26907045, now seen corresponding path program 2 times [2021-04-16 06:47:45,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:45,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273126663] [2021-04-16 06:47:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:45,877 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:45,878 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:45,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:45,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:45,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:45,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:45,982 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.4 percent of original size [2021-04-16 06:47:45,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 320 [2021-04-16 06:47:46,016 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.4 percent of original size [2021-04-16 06:47:46,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 320 [2021-04-16 06:47:46,048 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-04-16 06:47:46,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:47:46,057 INFO L142 QuantifierPusher]: treesize reduction 15, result has 92.8 percent of original size [2021-04-16 06:47:46,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-04-16 06:47:46,097 INFO L142 QuantifierPusher]: treesize reduction 41, result has 87.0 percent of original size [2021-04-16 06:47:46,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-04-16 06:47:46,138 INFO L142 QuantifierPusher]: treesize reduction 87, result has 72.1 percent of original size [2021-04-16 06:47:46,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-04-16 06:47:46,142 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:47:46,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:46,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:46,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273126663] [2021-04-16 06:47:46,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:46,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:47:46,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223305475] [2021-04-16 06:47:46,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:47:46,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:46,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:47:46,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:46,162 INFO L87 Difference]: Start difference. First operand 196 states and 246 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:46,277 INFO L93 Difference]: Finished difference Result 290 states and 366 transitions. [2021-04-16 06:47:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-04-16 06:47:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:46,278 INFO L225 Difference]: With dead ends: 290 [2021-04-16 06:47:46,278 INFO L226 Difference]: Without dead ends: 194 [2021-04-16 06:47:46,279 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 196.6ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-04-16 06:47:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-04-16 06:47:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.2645502645502646) internal successors, (239), 189 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 243 transitions. [2021-04-16 06:47:46,298 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 243 transitions. Word has length 73 [2021-04-16 06:47:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:46,298 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 243 transitions. [2021-04-16 06:47:46,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 243 transitions. [2021-04-16 06:47:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-04-16 06:47:46,299 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:46,299 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:46,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-04-16 06:47:46,299 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:46,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1106442678, now seen corresponding path program 1 times [2021-04-16 06:47:46,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:46,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35054324] [2021-04-16 06:47:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:46,303 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:46,305 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:46,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:46,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:46,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:46,361 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:47:46,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:46,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:46,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:46,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35054324] [2021-04-16 06:47:46,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:46,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:47:46,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334036499] [2021-04-16 06:47:46,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:47:46,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:46,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:47:46,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:47:46,395 INFO L87 Difference]: Start difference. First operand 194 states and 243 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:46,574 INFO L93 Difference]: Finished difference Result 900 states and 1163 transitions. [2021-04-16 06:47:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:47:46,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-04-16 06:47:46,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:46,577 INFO L225 Difference]: With dead ends: 900 [2021-04-16 06:47:46,577 INFO L226 Difference]: Without dead ends: 808 [2021-04-16 06:47:46,578 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:46,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-04-16 06:47:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 200. [2021-04-16 06:47:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.2666666666666666) internal successors, (247), 195 states have internal predecessors, (247), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 251 transitions. [2021-04-16 06:47:46,607 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 251 transitions. Word has length 75 [2021-04-16 06:47:46,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:46,607 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 251 transitions. [2021-04-16 06:47:46,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 251 transitions. [2021-04-16 06:47:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-04-16 06:47:46,608 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:46,608 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:46,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-04-16 06:47:46,608 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:46,608 INFO L82 PathProgramCache]: Analyzing trace with hash 958234668, now seen corresponding path program 2 times [2021-04-16 06:47:46,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:46,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713375314] [2021-04-16 06:47:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:46,614 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:46,615 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:46,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:46,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:46,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:46,665 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:46,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:46,678 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:47:46,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:46,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:46,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:46,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:46,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:46,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:46,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713375314] [2021-04-16 06:47:46,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:46,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:47:46,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327711199] [2021-04-16 06:47:46,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:47:46,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:46,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:47:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:46,712 INFO L87 Difference]: Start difference. First operand 200 states and 251 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:46,959 INFO L93 Difference]: Finished difference Result 915 states and 1182 transitions. [2021-04-16 06:47:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:47:46,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-04-16 06:47:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:46,962 INFO L225 Difference]: With dead ends: 915 [2021-04-16 06:47:46,963 INFO L226 Difference]: Without dead ends: 823 [2021-04-16 06:47:46,964 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-04-16 06:47:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 202. [2021-04-16 06:47:46,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.2690355329949239) internal successors, (250), 197 states have internal predecessors, (250), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 254 transitions. [2021-04-16 06:47:46,994 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 254 transitions. Word has length 79 [2021-04-16 06:47:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:46,994 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 254 transitions. [2021-04-16 06:47:46,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 254 transitions. [2021-04-16 06:47:46,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-04-16 06:47:46,995 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:46,995 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:46,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-04-16 06:47:46,995 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:46,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1360143545, now seen corresponding path program 3 times [2021-04-16 06:47:46,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:46,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933170281] [2021-04-16 06:47:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:46,999 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:47,000 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:47,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:47,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:47,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:47,071 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:47:47,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:47,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:47,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:47,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:47,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933170281] [2021-04-16 06:47:47,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:47,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:47:47,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862524594] [2021-04-16 06:47:47,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:47:47,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:47,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:47:47,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:47:47,115 INFO L87 Difference]: Start difference. First operand 202 states and 254 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:47,517 INFO L93 Difference]: Finished difference Result 1383 states and 1793 transitions. [2021-04-16 06:47:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:47:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-04-16 06:47:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:47,521 INFO L225 Difference]: With dead ends: 1383 [2021-04-16 06:47:47,521 INFO L226 Difference]: Without dead ends: 1291 [2021-04-16 06:47:47,521 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-04-16 06:47:47,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 206. [2021-04-16 06:47:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.2736318407960199) internal successors, (256), 201 states have internal predecessors, (256), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2021-04-16 06:47:47,554 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 81 [2021-04-16 06:47:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:47,555 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2021-04-16 06:47:47,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2021-04-16 06:47:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-04-16 06:47:47,555 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:47,555 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 7, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:47,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-04-16 06:47:47,555 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:47,556 INFO L82 PathProgramCache]: Analyzing trace with hash 62599485, now seen corresponding path program 4 times [2021-04-16 06:47:47,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:47,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889009357] [2021-04-16 06:47:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:47,559 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:47,560 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:47,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:47,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:47,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:47,631 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:47,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:47,647 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:47:47,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:47,648 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:47,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:47,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:47,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:47,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:47,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889009357] [2021-04-16 06:47:47,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:47,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:47:47,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999696146] [2021-04-16 06:47:47,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:47:47,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:47,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:47:47,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:47,688 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:48,186 INFO L93 Difference]: Finished difference Result 1398 states and 1812 transitions. [2021-04-16 06:47:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:47:48,187 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-04-16 06:47:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:48,190 INFO L225 Difference]: With dead ends: 1398 [2021-04-16 06:47:48,190 INFO L226 Difference]: Without dead ends: 1306 [2021-04-16 06:47:48,191 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 76.8ms TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:47:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-04-16 06:47:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 208. [2021-04-16 06:47:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.2758620689655173) internal successors, (259), 203 states have internal predecessors, (259), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 263 transitions. [2021-04-16 06:47:48,230 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 263 transitions. Word has length 85 [2021-04-16 06:47:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:48,230 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 263 transitions. [2021-04-16 06:47:48,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 263 transitions. [2021-04-16 06:47:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-04-16 06:47:48,230 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:48,230 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:48,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-04-16 06:47:48,231 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:48,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:48,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1222872088, now seen corresponding path program 5 times [2021-04-16 06:47:48,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:48,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053961440] [2021-04-16 06:47:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:48,235 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:48,236 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:48,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:48,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:48,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:48,340 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:48,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:48,356 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:47:48,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:48,357 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:48,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:48,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:48,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:48,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:48,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053961440] [2021-04-16 06:47:48,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:48,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:47:48,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132484160] [2021-04-16 06:47:48,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:47:48,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:48,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:47:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:48,406 INFO L87 Difference]: Start difference. First operand 208 states and 263 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:49,001 INFO L93 Difference]: Finished difference Result 1559 states and 2022 transitions. [2021-04-16 06:47:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:47:49,002 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-04-16 06:47:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:49,006 INFO L225 Difference]: With dead ends: 1559 [2021-04-16 06:47:49,006 INFO L226 Difference]: Without dead ends: 1467 [2021-04-16 06:47:49,007 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:47:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2021-04-16 06:47:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 210. [2021-04-16 06:47:49,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.278048780487805) internal successors, (262), 205 states have internal predecessors, (262), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 266 transitions. [2021-04-16 06:47:49,053 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 266 transitions. Word has length 87 [2021-04-16 06:47:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:49,053 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 266 transitions. [2021-04-16 06:47:49,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 266 transitions. [2021-04-16 06:47:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-04-16 06:47:49,053 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:49,054 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:49,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-04-16 06:47:49,054 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash -446653389, now seen corresponding path program 6 times [2021-04-16 06:47:49,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:49,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115544762] [2021-04-16 06:47:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:49,057 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:49,058 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:49,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:49,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:49,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:49,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:49,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:49,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:49,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:49,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:49,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:49,141 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 06:47:49,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:47:49,158 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-04-16 06:47:49,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:49,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-04-16 06:47:49,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:49,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:49,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:49,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:49,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115544762] [2021-04-16 06:47:49,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:49,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:47:49,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108711637] [2021-04-16 06:47:49,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:47:49,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:49,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:47:49,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:49,197 INFO L87 Difference]: Start difference. First operand 210 states and 266 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:49,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:49,889 INFO L93 Difference]: Finished difference Result 1720 states and 2232 transitions. [2021-04-16 06:47:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:47:49,890 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-04-16 06:47:49,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:49,894 INFO L225 Difference]: With dead ends: 1720 [2021-04-16 06:47:49,894 INFO L226 Difference]: Without dead ends: 1628 [2021-04-16 06:47:49,895 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-04-16 06:47:49,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 212. [2021-04-16 06:47:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.2801932367149758) internal successors, (265), 207 states have internal predecessors, (265), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 269 transitions. [2021-04-16 06:47:49,976 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 269 transitions. Word has length 89 [2021-04-16 06:47:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:49,976 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 269 transitions. [2021-04-16 06:47:49,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 269 transitions. [2021-04-16 06:47:49,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-04-16 06:47:49,977 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:49,977 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:49,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-04-16 06:47:49,977 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:49,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1457131918, now seen corresponding path program 7 times [2021-04-16 06:47:49,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:49,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404523717] [2021-04-16 06:47:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:49,981 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:49,982 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:50,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:50,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:50,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:50,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:50,104 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:47:50,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:50,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:50,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:50,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:50,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404523717] [2021-04-16 06:47:50,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:50,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:47:50,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143237501] [2021-04-16 06:47:50,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:47:50,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:50,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:47:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:47:50,153 INFO L87 Difference]: Start difference. First operand 212 states and 269 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:51,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:51,174 INFO L93 Difference]: Finished difference Result 2188 states and 2843 transitions. [2021-04-16 06:47:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:47:51,175 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-04-16 06:47:51,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:51,180 INFO L225 Difference]: With dead ends: 2188 [2021-04-16 06:47:51,180 INFO L226 Difference]: Without dead ends: 2096 [2021-04-16 06:47:51,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:47:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2021-04-16 06:47:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 216. [2021-04-16 06:47:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.2843601895734598) internal successors, (271), 211 states have internal predecessors, (271), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 275 transitions. [2021-04-16 06:47:51,250 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 275 transitions. Word has length 91 [2021-04-16 06:47:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:51,250 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 275 transitions. [2021-04-16 06:47:51,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 275 transitions. [2021-04-16 06:47:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-04-16 06:47:51,251 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:51,251 INFO L519 BasicCegarLoop]: trace histogram [12, 11, 10, 10, 10, 10, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:51,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-04-16 06:47:51,251 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:51,251 INFO L82 PathProgramCache]: Analyzing trace with hash -763040764, now seen corresponding path program 8 times [2021-04-16 06:47:51,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:51,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465030577] [2021-04-16 06:47:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:51,255 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:51,256 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:51,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:51,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:51,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:51,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:51,422 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:47:51,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:51,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:51,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:51,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:51,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:51,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465030577] [2021-04-16 06:47:51,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:51,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:47:51,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305023965] [2021-04-16 06:47:51,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:47:51,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:51,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:47:51,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:47:51,487 INFO L87 Difference]: Start difference. First operand 216 states and 275 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:52,920 INFO L93 Difference]: Finished difference Result 2510 states and 3263 transitions. [2021-04-16 06:47:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:47:52,925 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-04-16 06:47:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:52,931 INFO L225 Difference]: With dead ends: 2510 [2021-04-16 06:47:52,931 INFO L226 Difference]: Without dead ends: 2418 [2021-04-16 06:47:52,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 171.7ms TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:47:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2021-04-16 06:47:53,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 220. [2021-04-16 06:47:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.2883720930232558) internal successors, (277), 215 states have internal predecessors, (277), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 281 transitions. [2021-04-16 06:47:53,012 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 281 transitions. Word has length 95 [2021-04-16 06:47:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:53,012 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 281 transitions. [2021-04-16 06:47:53,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 281 transitions. [2021-04-16 06:47:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-04-16 06:47:53,012 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:53,013 INFO L519 BasicCegarLoop]: trace histogram [14, 13, 10, 10, 10, 10, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:53,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-04-16 06:47:53,013 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:53,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1873910650, now seen corresponding path program 9 times [2021-04-16 06:47:53,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:53,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121250792] [2021-04-16 06:47:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:53,016 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:53,017 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:53,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:53,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:53,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 06:47:53,225 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-04-16 06:47:53,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:53,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:53,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:53,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:53,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121250792] [2021-04-16 06:47:53,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:53,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:47:53,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906261108] [2021-04-16 06:47:53,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:47:53,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:53,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:47:53,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:47:53,303 INFO L87 Difference]: Start difference. First operand 220 states and 281 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:55,172 INFO L93 Difference]: Finished difference Result 2832 states and 3683 transitions. [2021-04-16 06:47:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:47:55,173 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-04-16 06:47:55,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:55,180 INFO L225 Difference]: With dead ends: 2832 [2021-04-16 06:47:55,180 INFO L226 Difference]: Without dead ends: 2740 [2021-04-16 06:47:55,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 206.6ms TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:47:55,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-04-16 06:47:55,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 224. [2021-04-16 06:47:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.2922374429223744) internal successors, (283), 219 states have internal predecessors, (283), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 287 transitions. [2021-04-16 06:47:55,280 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 287 transitions. Word has length 99 [2021-04-16 06:47:55,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:55,280 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 287 transitions. [2021-04-16 06:47:55,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 287 transitions. [2021-04-16 06:47:55,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:47:55,281 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:55,281 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:55,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-04-16 06:47:55,281 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:55,281 INFO L82 PathProgramCache]: Analyzing trace with hash 267706762, now seen corresponding path program 1 times [2021-04-16 06:47:55,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:55,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177169424] [2021-04-16 06:47:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:55,285 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:55,286 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:55,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:55,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:55,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:55,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:47:55,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:55,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:55,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:55,448 INFO L142 QuantifierPusher]: treesize reduction 119, result has 68.8 percent of original size [2021-04-16 06:47:55,449 INFO L147 QuantifierPusher]: treesize reduction 20, result has 92.4 percent of original size 243 [2021-04-16 06:47:55,551 INFO L142 QuantifierPusher]: treesize reduction 139, result has 67.3 percent of original size [2021-04-16 06:47:55,553 INFO L147 QuantifierPusher]: treesize reduction 20, result has 93.0 percent of original size 266 [2021-04-16 06:47:55,614 INFO L142 QuantifierPusher]: treesize reduction 139, result has 67.5 percent of original size [2021-04-16 06:47:55,619 INFO L147 QuantifierPusher]: treesize reduction 20, result has 93.1 percent of original size 269 [2021-04-16 06:47:55,702 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.0 percent of original size [2021-04-16 06:47:55,704 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 344 [2021-04-16 06:47:55,824 INFO L142 QuantifierPusher]: treesize reduction 131, result has 63.7 percent of original size [2021-04-16 06:47:55,825 INFO L147 QuantifierPusher]: treesize reduction 27, result has 88.3 percent of original size 203 [2021-04-16 06:47:55,878 INFO L142 QuantifierPusher]: treesize reduction 123, result has 59.9 percent of original size [2021-04-16 06:47:55,880 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.2 percent of original size 177 [2021-04-16 06:47:55,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:55,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:55,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:55,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:55,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177169424] [2021-04-16 06:47:55,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:55,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:47:55,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129077090] [2021-04-16 06:47:55,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:47:55,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:55,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:47:55,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:55,906 INFO L87 Difference]: Start difference. First operand 224 states and 287 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:56,546 INFO L93 Difference]: Finished difference Result 323 states and 413 transitions. [2021-04-16 06:47:56,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:47:56,546 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:47:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:56,547 INFO L225 Difference]: With dead ends: 323 [2021-04-16 06:47:56,547 INFO L226 Difference]: Without dead ends: 224 [2021-04-16 06:47:56,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 723.4ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:47:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-04-16 06:47:56,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-04-16 06:47:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.2876712328767124) internal successors, (282), 219 states have internal predecessors, (282), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 286 transitions. [2021-04-16 06:47:56,628 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 286 transitions. Word has length 102 [2021-04-16 06:47:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:56,628 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 286 transitions. [2021-04-16 06:47:56,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 286 transitions. [2021-04-16 06:47:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:47:56,629 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:56,629 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:56,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-04-16 06:47:56,629 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:56,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1654492172, now seen corresponding path program 2 times [2021-04-16 06:47:56,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:56,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155555656] [2021-04-16 06:47:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:56,633 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:56,634 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:56,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:56,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:56,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:56,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:47:56,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:56,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:56,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:56,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:56,767 INFO L142 QuantifierPusher]: treesize reduction 249, result has 34.8 percent of original size [2021-04-16 06:47:56,768 INFO L147 QuantifierPusher]: treesize reduction 40, result has 69.9 percent of original size 93 [2021-04-16 06:47:56,804 INFO L142 QuantifierPusher]: treesize reduction 204, result has 52.0 percent of original size [2021-04-16 06:47:56,805 INFO L147 QuantifierPusher]: treesize reduction 20, result has 91.0 percent of original size 201 [2021-04-16 06:47:56,857 INFO L142 QuantifierPusher]: treesize reduction 204, result has 52.3 percent of original size [2021-04-16 06:47:56,859 INFO L147 QuantifierPusher]: treesize reduction 20, result has 91.1 percent of original size 204 [2021-04-16 06:47:56,914 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:56,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:56,941 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.0 percent of original size [2021-04-16 06:47:56,943 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 344 [2021-04-16 06:47:57,038 INFO L142 QuantifierPusher]: treesize reduction 151, result has 58.2 percent of original size [2021-04-16 06:47:57,039 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.7 percent of original size 203 [2021-04-16 06:47:57,077 INFO L142 QuantifierPusher]: treesize reduction 123, result has 59.9 percent of original size [2021-04-16 06:47:57,079 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.2 percent of original size 177 [2021-04-16 06:47:57,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:57,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:57,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:57,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155555656] [2021-04-16 06:47:57,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:57,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:47:57,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351482184] [2021-04-16 06:47:57,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:47:57,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:57,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:47:57,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:47:57,112 INFO L87 Difference]: Start difference. First operand 224 states and 286 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:57,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:57,692 INFO L93 Difference]: Finished difference Result 323 states and 411 transitions. [2021-04-16 06:47:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:47:57,693 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:47:57,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:57,694 INFO L225 Difference]: With dead ends: 323 [2021-04-16 06:47:57,694 INFO L226 Difference]: Without dead ends: 224 [2021-04-16 06:47:57,694 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 562.4ms TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:47:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-04-16 06:47:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-04-16 06:47:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.2831050228310503) internal successors, (281), 219 states have internal predecessors, (281), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 285 transitions. [2021-04-16 06:47:57,770 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 285 transitions. Word has length 102 [2021-04-16 06:47:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:57,770 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 285 transitions. [2021-04-16 06:47:57,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 285 transitions. [2021-04-16 06:47:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:47:57,771 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:57,771 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:57,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-04-16 06:47:57,771 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:57,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:57,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1102135094, now seen corresponding path program 3 times [2021-04-16 06:47:57,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:57,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317319641] [2021-04-16 06:47:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:57,775 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:57,776 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:57,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:57,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:47:57,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:47:57,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:47:57,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:47:57,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:57,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:57,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:47:57,902 INFO L142 QuantifierPusher]: treesize reduction 249, result has 34.8 percent of original size [2021-04-16 06:47:57,903 INFO L147 QuantifierPusher]: treesize reduction 40, result has 69.9 percent of original size 93 [2021-04-16 06:47:57,934 INFO L142 QuantifierPusher]: treesize reduction 204, result has 52.0 percent of original size [2021-04-16 06:47:57,936 INFO L147 QuantifierPusher]: treesize reduction 20, result has 91.0 percent of original size 201 [2021-04-16 06:47:58,002 INFO L142 QuantifierPusher]: treesize reduction 204, result has 52.3 percent of original size [2021-04-16 06:47:58,003 INFO L147 QuantifierPusher]: treesize reduction 20, result has 91.1 percent of original size 204 [2021-04-16 06:47:58,052 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:58,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:58,072 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:47:58,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:47:58,094 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.0 percent of original size [2021-04-16 06:47:58,095 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 344 [2021-04-16 06:47:58,203 INFO L142 QuantifierPusher]: treesize reduction 148, result has 59.0 percent of original size [2021-04-16 06:47:58,204 INFO L147 QuantifierPusher]: treesize reduction 10, result has 95.3 percent of original size 203 [2021-04-16 06:47:58,245 INFO L142 QuantifierPusher]: treesize reduction 130, result has 57.7 percent of original size [2021-04-16 06:47:58,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-04-16 06:47:58,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:58,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:58,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:58,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:58,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317319641] [2021-04-16 06:47:58,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:58,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:47:58,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455213039] [2021-04-16 06:47:58,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:47:58,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:58,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:47:58,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:47:58,283 INFO L87 Difference]: Start difference. First operand 224 states and 285 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:58,949 INFO L93 Difference]: Finished difference Result 323 states and 409 transitions. [2021-04-16 06:47:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:47:58,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:47:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:58,950 INFO L225 Difference]: With dead ends: 323 [2021-04-16 06:47:58,950 INFO L226 Difference]: Without dead ends: 224 [2021-04-16 06:47:58,951 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 641.5ms TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:47:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-04-16 06:47:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-04-16 06:47:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.278538812785388) internal successors, (280), 219 states have internal predecessors, (280), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 284 transitions. [2021-04-16 06:47:59,030 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 284 transitions. Word has length 102 [2021-04-16 06:47:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:59,030 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 284 transitions. [2021-04-16 06:47:59,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 284 transitions. [2021-04-16 06:47:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:47:59,031 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:59,031 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:59,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-04-16 06:47:59,031 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1117653812, now seen corresponding path program 4 times [2021-04-16 06:47:59,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:59,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014055188] [2021-04-16 06:47:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:59,035 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:59,036 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:59,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:59,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:47:59,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:59,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:59,173 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:47:59,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:47:59,188 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:47:59,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:47:59,189 INFO L142 QuantifierPusher]: treesize reduction 20, result has 83.1 percent of original size [2021-04-16 06:47:59,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:47:59,220 INFO L142 QuantifierPusher]: treesize reduction 59, result has 79.3 percent of original size [2021-04-16 06:47:59,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-04-16 06:47:59,257 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.6 percent of original size [2021-04-16 06:47:59,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-04-16 06:47:59,269 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.7 percent of original size [2021-04-16 06:47:59,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 300 [2021-04-16 06:47:59,310 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.7 percent of original size [2021-04-16 06:47:59,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 300 [2021-04-16 06:47:59,352 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.7 percent of original size [2021-04-16 06:47:59,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 300 [2021-04-16 06:47:59,406 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.7 percent of original size [2021-04-16 06:47:59,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 300 [2021-04-16 06:47:59,462 INFO L142 QuantifierPusher]: treesize reduction 174, result has 73.2 percent of original size [2021-04-16 06:47:59,464 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.9 percent of original size 465 [2021-04-16 06:47:59,577 INFO L142 QuantifierPusher]: treesize reduction 192, result has 77.3 percent of original size [2021-04-16 06:47:59,579 INFO L147 QuantifierPusher]: treesize reduction 16, result has 97.6 percent of original size 638 [2021-04-16 06:47:59,695 INFO L142 QuantifierPusher]: treesize reduction 202, result has 78.0 percent of original size [2021-04-16 06:47:59,697 INFO L147 QuantifierPusher]: treesize reduction 7, result has 99.0 percent of original size 708 [2021-04-16 06:47:59,806 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:47:59,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:47:59,871 INFO L142 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size [2021-04-16 06:47:59,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:47:59,893 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:47:59,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:47:59,908 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:47:59,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:47:59,955 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:47:59,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:47:59,979 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:47:59,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:48:00,037 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:00,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:00,100 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:00,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:00,163 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:00,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:00,225 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:00,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:00,292 INFO L142 QuantifierPusher]: treesize reduction 172, result has 78.4 percent of original size [2021-04-16 06:48:00,294 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 615 [2021-04-16 06:48:00,421 INFO L142 QuantifierPusher]: treesize reduction 192, result has 71.5 percent of original size [2021-04-16 06:48:00,422 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.5 percent of original size 474 [2021-04-16 06:48:00,514 INFO L142 QuantifierPusher]: treesize reduction 188, result has 67.5 percent of original size [2021-04-16 06:48:00,516 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.2 percent of original size 384 [2021-04-16 06:48:00,519 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:48:00,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:48:00,520 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:00,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:00,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:00,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:00,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:00,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:00,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:00,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014055188] [2021-04-16 06:48:00,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:00,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:48:00,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304340419] [2021-04-16 06:48:00,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:48:00,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:00,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:48:00,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:48:00,551 INFO L87 Difference]: Start difference. First operand 224 states and 284 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 25 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:01,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:01,995 INFO L93 Difference]: Finished difference Result 672 states and 858 transitions. [2021-04-16 06:48:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-04-16 06:48:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 25 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:01,997 INFO L225 Difference]: With dead ends: 672 [2021-04-16 06:48:01,997 INFO L226 Difference]: Without dead ends: 573 [2021-04-16 06:48:01,998 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1846.1ms TimeCoverageRelationStatistics Valid=377, Invalid=2073, Unknown=0, NotChecked=0, Total=2450 [2021-04-16 06:48:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-04-16 06:48:02,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 382. [2021-04-16 06:48:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 377 states have (on average 1.2705570291777188) internal successors, (479), 377 states have internal predecessors, (479), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 483 transitions. [2021-04-16 06:48:02,157 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 483 transitions. Word has length 102 [2021-04-16 06:48:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:02,158 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 483 transitions. [2021-04-16 06:48:02,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 25 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 483 transitions. [2021-04-16 06:48:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:02,159 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:02,159 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:02,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-04-16 06:48:02,159 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:02,159 INFO L82 PathProgramCache]: Analyzing trace with hash -898799094, now seen corresponding path program 5 times [2021-04-16 06:48:02,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:02,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60562126] [2021-04-16 06:48:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:02,163 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:02,164 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:02,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:02,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:02,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:02,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:02,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:02,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:02,285 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:48:02,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:02,300 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:48:02,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:48:02,301 INFO L142 QuantifierPusher]: treesize reduction 20, result has 83.1 percent of original size [2021-04-16 06:48:02,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:48:02,331 INFO L142 QuantifierPusher]: treesize reduction 59, result has 79.3 percent of original size [2021-04-16 06:48:02,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-04-16 06:48:02,372 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.6 percent of original size [2021-04-16 06:48:02,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-04-16 06:48:02,384 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:02,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:02,431 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:02,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:02,481 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:02,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:02,533 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:02,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:02,588 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:02,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:02,644 INFO L142 QuantifierPusher]: treesize reduction 148, result has 77.1 percent of original size [2021-04-16 06:48:02,646 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.0 percent of original size 487 [2021-04-16 06:48:02,758 INFO L142 QuantifierPusher]: treesize reduction 198, result has 76.6 percent of original size [2021-04-16 06:48:02,761 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.5 percent of original size 638 [2021-04-16 06:48:02,888 INFO L142 QuantifierPusher]: treesize reduction 190, result has 79.3 percent of original size [2021-04-16 06:48:02,891 INFO L147 QuantifierPusher]: treesize reduction 19, result has 97.4 percent of original size 708 [2021-04-16 06:48:03,013 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:48:03,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:48:03,081 INFO L142 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size [2021-04-16 06:48:03,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:03,106 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:48:03,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:03,124 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:48:03,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:48:03,172 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:48:03,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:48:03,204 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:48:03,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:48:03,262 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:03,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:03,324 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:03,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:03,402 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:03,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:03,472 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:03,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:03,544 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:03,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:03,611 INFO L142 QuantifierPusher]: treesize reduction 172, result has 78.4 percent of original size [2021-04-16 06:48:03,613 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 615 [2021-04-16 06:48:03,760 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2021-04-16 06:48:03,764 INFO L142 QuantifierPusher]: treesize reduction 189, result has 71.9 percent of original size [2021-04-16 06:48:03,766 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.9 percent of original size 474 [2021-04-16 06:48:03,853 INFO L142 QuantifierPusher]: treesize reduction 171, result has 72.4 percent of original size [2021-04-16 06:48:03,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 448 [2021-04-16 06:48:03,858 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:48:03,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:48:03,864 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:03,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:03,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:03,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:03,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60562126] [2021-04-16 06:48:03,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:03,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:48:03,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448377395] [2021-04-16 06:48:03,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:48:03,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:48:03,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:48:03,895 INFO L87 Difference]: Start difference. First operand 382 states and 483 transitions. Second operand has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:05,560 INFO L93 Difference]: Finished difference Result 837 states and 1061 transitions. [2021-04-16 06:48:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-16 06:48:05,560 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:05,562 INFO L225 Difference]: With dead ends: 837 [2021-04-16 06:48:05,562 INFO L226 Difference]: Without dead ends: 685 [2021-04-16 06:48:05,563 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 2185.0ms TimeCoverageRelationStatistics Valid=421, Invalid=2549, Unknown=0, NotChecked=0, Total=2970 [2021-04-16 06:48:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-04-16 06:48:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 500. [2021-04-16 06:48:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 495 states have (on average 1.2606060606060605) internal successors, (624), 495 states have internal predecessors, (624), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 628 transitions. [2021-04-16 06:48:05,782 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 628 transitions. Word has length 102 [2021-04-16 06:48:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:05,783 INFO L480 AbstractCegarLoop]: Abstraction has 500 states and 628 transitions. [2021-04-16 06:48:05,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 628 transitions. [2021-04-16 06:48:05,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:05,784 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:05,784 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:05,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-04-16 06:48:05,784 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:05,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:05,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1707224460, now seen corresponding path program 6 times [2021-04-16 06:48:05,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:05,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164003149] [2021-04-16 06:48:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:05,788 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:05,788 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:05,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:05,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:05,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:05,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:05,940 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:48:05,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:05,955 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:48:05,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:48:05,956 INFO L142 QuantifierPusher]: treesize reduction 20, result has 83.1 percent of original size [2021-04-16 06:48:05,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:48:05,986 INFO L142 QuantifierPusher]: treesize reduction 59, result has 79.3 percent of original size [2021-04-16 06:48:05,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-04-16 06:48:06,023 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.6 percent of original size [2021-04-16 06:48:06,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-04-16 06:48:06,037 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:06,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:06,089 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:06,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:06,151 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:06,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:06,207 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:06,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:06,264 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:06,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:06,329 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.1 percent of original size [2021-04-16 06:48:06,330 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.5 percent of original size 345 [2021-04-16 06:48:06,395 INFO L142 QuantifierPusher]: treesize reduction 126, result has 78.3 percent of original size [2021-04-16 06:48:06,406 INFO L147 QuantifierPusher]: treesize reduction 22, result has 95.2 percent of original size 433 [2021-04-16 06:48:06,507 INFO L142 QuantifierPusher]: treesize reduction 183, result has 77.0 percent of original size [2021-04-16 06:48:06,509 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 603 [2021-04-16 06:48:06,621 INFO L142 QuantifierPusher]: treesize reduction 184, result has 78.8 percent of original size [2021-04-16 06:48:06,623 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.5 percent of original size 673 [2021-04-16 06:48:06,739 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:48:06,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:48:06,814 INFO L142 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size [2021-04-16 06:48:06,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:06,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:48:06,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:06,855 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:48:06,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:48:06,911 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:48:06,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:48:06,936 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:48:06,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:48:06,999 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:07,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:07,068 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:07,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:07,141 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:07,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:07,215 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:07,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:07,286 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:07,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:07,357 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:07,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:07,431 INFO L142 QuantifierPusher]: treesize reduction 162, result has 79.7 percent of original size [2021-04-16 06:48:07,438 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.9 percent of original size 615 [2021-04-16 06:48:07,585 INFO L142 QuantifierPusher]: treesize reduction 184, result has 72.7 percent of original size [2021-04-16 06:48:07,586 INFO L147 QuantifierPusher]: treesize reduction 17, result has 96.5 percent of original size 472 [2021-04-16 06:48:07,679 INFO L142 QuantifierPusher]: treesize reduction 166, result has 73.2 percent of original size [2021-04-16 06:48:07,681 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.5 percent of original size 446 [2021-04-16 06:48:07,684 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:48:07,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:48:07,689 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:07,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:07,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:07,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:07,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:07,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:07,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164003149] [2021-04-16 06:48:07,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:07,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-04-16 06:48:07,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494232333] [2021-04-16 06:48:07,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-04-16 06:48:07,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:07,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-04-16 06:48:07,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:48:07,722 INFO L87 Difference]: Start difference. First operand 500 states and 628 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:09,713 INFO L93 Difference]: Finished difference Result 1179 states and 1483 transitions. [2021-04-16 06:48:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-04-16 06:48:09,714 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:09,716 INFO L225 Difference]: With dead ends: 1179 [2021-04-16 06:48:09,716 INFO L226 Difference]: Without dead ends: 915 [2021-04-16 06:48:09,717 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 2508.6ms TimeCoverageRelationStatistics Valid=467, Invalid=3193, Unknown=0, NotChecked=0, Total=3660 [2021-04-16 06:48:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-04-16 06:48:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 727. [2021-04-16 06:48:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 722 states have (on average 1.2534626038781163) internal successors, (905), 722 states have internal predecessors, (905), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 909 transitions. [2021-04-16 06:48:10,048 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 909 transitions. Word has length 102 [2021-04-16 06:48:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:10,048 INFO L480 AbstractCegarLoop]: Abstraction has 727 states and 909 transitions. [2021-04-16 06:48:10,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 909 transitions. [2021-04-16 06:48:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:10,050 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:10,050 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:10,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-04-16 06:48:10,050 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:10,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:10,050 INFO L82 PathProgramCache]: Analyzing trace with hash 686156106, now seen corresponding path program 7 times [2021-04-16 06:48:10,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:10,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616845672] [2021-04-16 06:48:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:10,055 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:10,056 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:10,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:10,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:48:10,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:10,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:10,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:10,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:10,178 INFO L142 QuantifierPusher]: treesize reduction 289, result has 25.1 percent of original size [2021-04-16 06:48:10,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:10,211 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.2 percent of original size [2021-04-16 06:48:10,212 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.7 percent of original size 174 [2021-04-16 06:48:10,267 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.6 percent of original size [2021-04-16 06:48:10,268 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.8 percent of original size 177 [2021-04-16 06:48:10,317 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:10,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:10,340 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:10,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:10,364 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:10,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:10,390 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:10,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:10,419 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.2 percent of original size [2021-04-16 06:48:10,420 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 348 [2021-04-16 06:48:10,531 INFO L142 QuantifierPusher]: treesize reduction 148, result has 59.5 percent of original size [2021-04-16 06:48:10,542 INFO L147 QuantifierPusher]: treesize reduction 10, result has 95.4 percent of original size 207 [2021-04-16 06:48:10,592 INFO L142 QuantifierPusher]: treesize reduction 130, result has 58.2 percent of original size [2021-04-16 06:48:10,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-04-16 06:48:10,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:10,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:10,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:10,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:10,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616845672] [2021-04-16 06:48:10,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:10,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:48:10,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455653136] [2021-04-16 06:48:10,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:48:10,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:10,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:48:10,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:48:10,624 INFO L87 Difference]: Start difference. First operand 727 states and 909 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:11,620 INFO L93 Difference]: Finished difference Result 784 states and 981 transitions. [2021-04-16 06:48:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:48:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:11,622 INFO L225 Difference]: With dead ends: 784 [2021-04-16 06:48:11,622 INFO L226 Difference]: Without dead ends: 727 [2021-04-16 06:48:11,622 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 676.3ms TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:48:11,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-04-16 06:48:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-04-16 06:48:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 722 states have (on average 1.2520775623268698) internal successors, (904), 722 states have internal predecessors, (904), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 908 transitions. [2021-04-16 06:48:11,963 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 908 transitions. Word has length 102 [2021-04-16 06:48:11,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:11,964 INFO L480 AbstractCegarLoop]: Abstraction has 727 states and 908 transitions. [2021-04-16 06:48:11,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:11,964 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 908 transitions. [2021-04-16 06:48:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:11,965 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:11,965 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:11,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-04-16 06:48:11,965 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:11,965 INFO L82 PathProgramCache]: Analyzing trace with hash 99350092, now seen corresponding path program 8 times [2021-04-16 06:48:11,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:11,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128895162] [2021-04-16 06:48:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:11,969 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:11,970 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:12,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:12,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:12,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:12,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:12,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:12,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:12,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:12,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:12,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:12,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:12,085 INFO L142 QuantifierPusher]: treesize reduction 19, result has 81.6 percent of original size [2021-04-16 06:48:12,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:48:12,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:12,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:12,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:12,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:12,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:12,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128895162] [2021-04-16 06:48:12,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:12,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:48:12,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127314088] [2021-04-16 06:48:12,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:48:12,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:12,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:48:12,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:48:12,174 INFO L87 Difference]: Start difference. First operand 727 states and 908 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:15,218 INFO L93 Difference]: Finished difference Result 4932 states and 6091 transitions. [2021-04-16 06:48:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-16 06:48:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:15,229 INFO L225 Difference]: With dead ends: 4932 [2021-04-16 06:48:15,229 INFO L226 Difference]: Without dead ends: 4924 [2021-04-16 06:48:15,230 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 341.6ms TimeCoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:48:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2021-04-16 06:48:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 2764. [2021-04-16 06:48:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2759 states have (on average 1.2479159115621603) internal successors, (3443), 2759 states have internal predecessors, (3443), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3447 transitions. [2021-04-16 06:48:16,698 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3447 transitions. Word has length 102 [2021-04-16 06:48:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:16,699 INFO L480 AbstractCegarLoop]: Abstraction has 2764 states and 3447 transitions. [2021-04-16 06:48:16,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3447 transitions. [2021-04-16 06:48:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:16,702 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:16,702 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:16,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-04-16 06:48:16,703 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:16,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:16,703 INFO L82 PathProgramCache]: Analyzing trace with hash 429161416, now seen corresponding path program 9 times [2021-04-16 06:48:16,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:16,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405484810] [2021-04-16 06:48:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:16,709 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:16,710 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:16,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:16,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:16,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:48:16,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:16,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:16,852 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-04-16 06:48:16,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:48:16,871 INFO L142 QuantifierPusher]: treesize reduction 16, result has 65.2 percent of original size [2021-04-16 06:48:16,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:48:16,872 INFO L142 QuantifierPusher]: treesize reduction 22, result has 87.8 percent of original size [2021-04-16 06:48:16,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-04-16 06:48:16,941 INFO L142 QuantifierPusher]: treesize reduction 61, result has 82.4 percent of original size [2021-04-16 06:48:16,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-04-16 06:48:16,990 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.4 percent of original size [2021-04-16 06:48:16,992 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.5 percent of original size 357 [2021-04-16 06:48:17,006 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:48:17,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:48:17,068 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:48:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:48:17,130 INFO L142 QuantifierPusher]: treesize reduction 167, result has 78.1 percent of original size [2021-04-16 06:48:17,132 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.6 percent of original size 575 [2021-04-16 06:48:17,262 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 45 [2021-04-16 06:48:17,265 INFO L142 QuantifierPusher]: treesize reduction 187, result has 76.8 percent of original size [2021-04-16 06:48:17,267 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.8 percent of original size 598 [2021-04-16 06:48:17,361 INFO L142 QuantifierPusher]: treesize reduction 187, result has 76.9 percent of original size [2021-04-16 06:48:17,363 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.8 percent of original size 601 [2021-04-16 06:48:17,455 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:48:17,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:48:17,513 INFO L142 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size [2021-04-16 06:48:17,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:48:17,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:48:17,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:48:17,560 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:48:17,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:48:17,608 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:48:17,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:48:17,635 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:48:17,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:48:17,704 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:17,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:17,763 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:17,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:17,834 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:17,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:17,906 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:17,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:17,974 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:17,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:18,043 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:18,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:18,112 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:18,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:18,185 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:18,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:48:18,272 INFO L142 QuantifierPusher]: treesize reduction 172, result has 76.5 percent of original size [2021-04-16 06:48:18,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 561 [2021-04-16 06:48:18,417 INFO L142 QuantifierPusher]: treesize reduction 108, result has 79.4 percent of original size [2021-04-16 06:48:18,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 417 [2021-04-16 06:48:18,500 INFO L142 QuantifierPusher]: treesize reduction 108, result has 79.3 percent of original size [2021-04-16 06:48:18,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 413 [2021-04-16 06:48:18,505 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:48:18,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:48:18,506 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:18,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:18,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:18,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:18,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:18,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:18,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405484810] [2021-04-16 06:48:18,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:18,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-04-16 06:48:18,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090512463] [2021-04-16 06:48:18,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-04-16 06:48:18,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:18,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-04-16 06:48:18,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2021-04-16 06:48:18,554 INFO L87 Difference]: Start difference. First operand 2764 states and 3447 transitions. Second operand has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:22,269 INFO L93 Difference]: Finished difference Result 4052 states and 5060 transitions. [2021-04-16 06:48:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-04-16 06:48:22,270 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:22,275 INFO L225 Difference]: With dead ends: 4052 [2021-04-16 06:48:22,275 INFO L226 Difference]: Without dead ends: 3805 [2021-04-16 06:48:22,276 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2565.4ms TimeCoverageRelationStatistics Valid=402, Invalid=2460, Unknown=0, NotChecked=0, Total=2862 [2021-04-16 06:48:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-04-16 06:48:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3071. [2021-04-16 06:48:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 3066 states have (on average 1.2442922374429224) internal successors, (3815), 3066 states have internal predecessors, (3815), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 3819 transitions. [2021-04-16 06:48:23,956 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 3819 transitions. Word has length 102 [2021-04-16 06:48:23,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:23,957 INFO L480 AbstractCegarLoop]: Abstraction has 3071 states and 3819 transitions. [2021-04-16 06:48:23,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 3819 transitions. [2021-04-16 06:48:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:23,961 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:23,961 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:23,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-04-16 06:48:23,961 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:23,962 INFO L82 PathProgramCache]: Analyzing trace with hash 36134406, now seen corresponding path program 10 times [2021-04-16 06:48:23,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:23,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103814524] [2021-04-16 06:48:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:23,966 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:23,966 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:24,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:24,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:48:24,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:24,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:24,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:24,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:24,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:24,114 INFO L142 QuantifierPusher]: treesize reduction 249, result has 35.5 percent of original size [2021-04-16 06:48:24,115 INFO L147 QuantifierPusher]: treesize reduction 40, result has 70.8 percent of original size 97 [2021-04-16 06:48:24,167 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.2 percent of original size [2021-04-16 06:48:24,168 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.7 percent of original size 174 [2021-04-16 06:48:24,222 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.6 percent of original size [2021-04-16 06:48:24,223 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.8 percent of original size 177 [2021-04-16 06:48:24,272 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:24,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:24,295 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:24,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:24,322 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:24,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:24,349 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.2 percent of original size [2021-04-16 06:48:24,351 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 348 [2021-04-16 06:48:24,464 INFO L142 QuantifierPusher]: treesize reduction 148, result has 59.5 percent of original size [2021-04-16 06:48:24,465 INFO L147 QuantifierPusher]: treesize reduction 10, result has 95.4 percent of original size 207 [2021-04-16 06:48:24,514 INFO L142 QuantifierPusher]: treesize reduction 130, result has 58.2 percent of original size [2021-04-16 06:48:24,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-04-16 06:48:24,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:24,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:24,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:24,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103814524] [2021-04-16 06:48:24,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:24,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:48:24,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257452339] [2021-04-16 06:48:24,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:48:24,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:24,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:48:24,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:48:24,558 INFO L87 Difference]: Start difference. First operand 3071 states and 3819 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:27,224 INFO L93 Difference]: Finished difference Result 3564 states and 4412 transitions. [2021-04-16 06:48:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:48:27,224 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:27,229 INFO L225 Difference]: With dead ends: 3564 [2021-04-16 06:48:27,229 INFO L226 Difference]: Without dead ends: 3366 [2021-04-16 06:48:27,230 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 661.6ms TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:48:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2021-04-16 06:48:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3296. [2021-04-16 06:48:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3296 states, 3291 states have (on average 1.2382254633849894) internal successors, (4075), 3291 states have internal predecessors, (4075), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4079 transitions. [2021-04-16 06:48:29,040 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4079 transitions. Word has length 102 [2021-04-16 06:48:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:29,040 INFO L480 AbstractCegarLoop]: Abstraction has 3296 states and 4079 transitions. [2021-04-16 06:48:29,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4079 transitions. [2021-04-16 06:48:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:29,044 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:29,044 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:29,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-04-16 06:48:29,044 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash -410122998, now seen corresponding path program 11 times [2021-04-16 06:48:29,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:29,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226140272] [2021-04-16 06:48:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:29,048 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:29,049 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:29,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:29,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:29,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:29,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:29,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:29,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:29,152 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:48:29,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:29,168 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:48:29,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:48:29,169 INFO L142 QuantifierPusher]: treesize reduction 20, result has 83.1 percent of original size [2021-04-16 06:48:29,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:48:29,199 INFO L142 QuantifierPusher]: treesize reduction 59, result has 79.3 percent of original size [2021-04-16 06:48:29,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-04-16 06:48:29,233 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.6 percent of original size [2021-04-16 06:48:29,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-04-16 06:48:29,246 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:29,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:29,296 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:48:29,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:48:29,349 INFO L142 QuantifierPusher]: treesize reduction 138, result has 78.6 percent of original size [2021-04-16 06:48:29,350 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.1 percent of original size 487 [2021-04-16 06:48:29,449 INFO L142 QuantifierPusher]: treesize reduction 188, result has 77.8 percent of original size [2021-04-16 06:48:29,451 INFO L147 QuantifierPusher]: treesize reduction 20, result has 97.0 percent of original size 638 [2021-04-16 06:48:29,575 INFO L142 QuantifierPusher]: treesize reduction 180, result has 80.3 percent of original size [2021-04-16 06:48:29,577 INFO L147 QuantifierPusher]: treesize reduction 29, result has 96.0 percent of original size 703 [2021-04-16 06:48:29,689 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:48:29,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-04-16 06:48:29,749 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.8 percent of original size [2021-04-16 06:48:29,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:48:29,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:48:29,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:48:29,781 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.2 percent of original size [2021-04-16 06:48:29,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-04-16 06:48:29,817 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.8 percent of original size [2021-04-16 06:48:29,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-04-16 06:48:29,839 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.4 percent of original size [2021-04-16 06:48:29,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:48:29,890 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:29,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:48:29,948 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:48:29,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:48:30,009 INFO L142 QuantifierPusher]: treesize reduction 172, result has 78.3 percent of original size [2021-04-16 06:48:30,011 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 610 [2021-04-16 06:48:30,138 INFO L142 QuantifierPusher]: treesize reduction 181, result has 73.1 percent of original size [2021-04-16 06:48:30,140 INFO L147 QuantifierPusher]: treesize reduction 20, result has 95.9 percent of original size 471 [2021-04-16 06:48:30,225 INFO L142 QuantifierPusher]: treesize reduction 173, result has 72.1 percent of original size [2021-04-16 06:48:30,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 446 [2021-04-16 06:48:30,230 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:48:30,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:48:30,232 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:30,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:30,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:30,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:30,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:30,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:30,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226140272] [2021-04-16 06:48:30,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:30,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:48:30,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964831541] [2021-04-16 06:48:30,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:48:30,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:30,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:48:30,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:48:30,256 INFO L87 Difference]: Start difference. First operand 3296 states and 4079 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:33,431 INFO L93 Difference]: Finished difference Result 4691 states and 5816 transitions. [2021-04-16 06:48:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-16 06:48:33,431 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:33,436 INFO L225 Difference]: With dead ends: 4691 [2021-04-16 06:48:33,437 INFO L226 Difference]: Without dead ends: 3953 [2021-04-16 06:48:33,438 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1461.7ms TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2021-04-16 06:48:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2021-04-16 06:48:35,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3168. [2021-04-16 06:48:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3163 states have (on average 1.2374328169459374) internal successors, (3914), 3163 states have internal predecessors, (3914), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 3918 transitions. [2021-04-16 06:48:35,248 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 3918 transitions. Word has length 102 [2021-04-16 06:48:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:35,248 INFO L480 AbstractCegarLoop]: Abstraction has 3168 states and 3918 transitions. [2021-04-16 06:48:35,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 3918 transitions. [2021-04-16 06:48:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:35,252 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:35,252 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:35,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-04-16 06:48:35,252 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:35,252 INFO L82 PathProgramCache]: Analyzing trace with hash 800949966, now seen corresponding path program 12 times [2021-04-16 06:48:35,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:35,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460451617] [2021-04-16 06:48:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:35,257 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:35,258 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:35,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:35,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:35,345 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,351 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,352 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,352 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,353 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,354 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,354 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,355 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,355 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,356 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:48:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:35,357 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-04-16 06:48:35,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:48:35,360 INFO L142 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size [2021-04-16 06:48:35,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:48:35,365 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 06:48:35,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:48:35,374 INFO L142 QuantifierPusher]: treesize reduction 41, result has 90.8 percent of original size [2021-04-16 06:48:35,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-04-16 06:48:35,505 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 31 [2021-04-16 06:48:35,507 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.2 percent of original size [2021-04-16 06:48:35,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-04-16 06:48:35,591 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size [2021-04-16 06:48:35,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-04-16 06:48:35,685 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:48:35,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:48:35,709 INFO L142 QuantifierPusher]: treesize reduction 123, result has 74.9 percent of original size [2021-04-16 06:48:35,711 INFO L147 QuantifierPusher]: treesize reduction 20, result has 94.6 percent of original size 347 [2021-04-16 06:48:35,820 INFO L142 QuantifierPusher]: treesize reduction 140, result has 61.7 percent of original size [2021-04-16 06:48:35,821 INFO L147 QuantifierPusher]: treesize reduction 20, result has 91.2 percent of original size 206 [2021-04-16 06:48:35,865 INFO L142 QuantifierPusher]: treesize reduction 132, result has 57.7 percent of original size [2021-04-16 06:48:35,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-04-16 06:48:35,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:35,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:35,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:35,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:35,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460451617] [2021-04-16 06:48:35,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:35,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:48:35,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058082960] [2021-04-16 06:48:35,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:48:35,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:35,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:48:35,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:48:35,899 INFO L87 Difference]: Start difference. First operand 3168 states and 3918 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:38,428 INFO L93 Difference]: Finished difference Result 4181 states and 5167 transitions. [2021-04-16 06:48:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:48:38,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:38,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:38,433 INFO L225 Difference]: With dead ends: 4181 [2021-04-16 06:48:38,433 INFO L226 Difference]: Without dead ends: 3414 [2021-04-16 06:48:38,434 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 773.9ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:48:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2021-04-16 06:48:40,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3378. [2021-04-16 06:48:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3373 states have (on average 1.2315446190335013) internal successors, (4154), 3373 states have internal predecessors, (4154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4158 transitions. [2021-04-16 06:48:40,299 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4158 transitions. Word has length 102 [2021-04-16 06:48:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:40,300 INFO L480 AbstractCegarLoop]: Abstraction has 3378 states and 4158 transitions. [2021-04-16 06:48:40,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4158 transitions. [2021-04-16 06:48:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:40,303 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:40,304 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 7, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:40,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-04-16 06:48:40,304 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:40,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1813642868, now seen corresponding path program 13 times [2021-04-16 06:48:40,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:40,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924368028] [2021-04-16 06:48:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:40,309 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:40,309 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:40,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:40,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:48:40,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:48:40,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:48:40,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:40,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:40,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:40,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:40,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:40,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:48:40,526 INFO L142 QuantifierPusher]: treesize reduction 19, result has 81.6 percent of original size [2021-04-16 06:48:40,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:48:40,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:40,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:48:40,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:40,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:40,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:40,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:40,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924368028] [2021-04-16 06:48:40,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:40,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:48:40,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122343566] [2021-04-16 06:48:40,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:48:40,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:40,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:48:40,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:48:40,645 INFO L87 Difference]: Start difference. First operand 3378 states and 4158 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 19 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:50,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:50,320 INFO L93 Difference]: Finished difference Result 11085 states and 13532 transitions. [2021-04-16 06:48:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-04-16 06:48:50,321 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 19 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:50,334 INFO L225 Difference]: With dead ends: 11085 [2021-04-16 06:48:50,334 INFO L226 Difference]: Without dead ends: 11078 [2021-04-16 06:48:50,336 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 863.3ms TimeCoverageRelationStatistics Valid=190, Invalid=3116, Unknown=0, NotChecked=0, Total=3306 [2021-04-16 06:48:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11078 states. [2021-04-16 06:48:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11078 to 5346. [2021-04-16 06:48:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5341 states have (on average 1.2299194907320727) internal successors, (6569), 5341 states have internal predecessors, (6569), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 6573 transitions. [2021-04-16 06:48:53,733 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 6573 transitions. Word has length 102 [2021-04-16 06:48:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:53,733 INFO L480 AbstractCegarLoop]: Abstraction has 5346 states and 6573 transitions. [2021-04-16 06:48:53,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 19 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 6573 transitions. [2021-04-16 06:48:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:48:53,744 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:53,744 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 6, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:53,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-04-16 06:48:53,744 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1460256074, now seen corresponding path program 14 times [2021-04-16 06:48:53,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:53,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500649384] [2021-04-16 06:48:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:53,754 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:53,755 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:53,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:53,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:48:53,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:48:53,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:48:53,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:53,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:53,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:53,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:48:53,896 INFO L142 QuantifierPusher]: treesize reduction 119, result has 69.2 percent of original size [2021-04-16 06:48:53,898 INFO L147 QuantifierPusher]: treesize reduction 20, result has 92.5 percent of original size 247 [2021-04-16 06:48:53,989 INFO L142 QuantifierPusher]: treesize reduction 134, result has 68.8 percent of original size [2021-04-16 06:48:53,990 INFO L147 QuantifierPusher]: treesize reduction 27, result has 90.8 percent of original size 268 [2021-04-16 06:48:54,077 INFO L142 QuantifierPusher]: treesize reduction 134, result has 69.0 percent of original size [2021-04-16 06:48:54,079 INFO L147 QuantifierPusher]: treesize reduction 27, result has 90.9 percent of original size 271 [2021-04-16 06:48:54,158 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:54,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:54,184 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:48:54,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:48:54,212 INFO L142 QuantifierPusher]: treesize reduction 109, result has 74.4 percent of original size [2021-04-16 06:48:54,213 INFO L147 QuantifierPusher]: treesize reduction 22, result has 93.0 percent of original size 294 [2021-04-16 06:48:54,327 INFO L142 QuantifierPusher]: treesize reduction 133, result has 57.8 percent of original size [2021-04-16 06:48:54,328 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.5 percent of original size 172 [2021-04-16 06:48:54,372 INFO L142 QuantifierPusher]: treesize reduction 115, result has 55.9 percent of original size [2021-04-16 06:48:54,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-04-16 06:48:54,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:54,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:54,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:54,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500649384] [2021-04-16 06:48:54,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:54,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:48:54,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844117372] [2021-04-16 06:48:54,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:48:54,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:54,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:48:54,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:48:54,403 INFO L87 Difference]: Start difference. First operand 5346 states and 6573 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:58,684 INFO L93 Difference]: Finished difference Result 10218 states and 12512 transitions. [2021-04-16 06:48:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:48:58,685 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:48:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:58,691 INFO L225 Difference]: With dead ends: 10218 [2021-04-16 06:48:58,691 INFO L226 Difference]: Without dead ends: 5934 [2021-04-16 06:48:58,697 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 829.3ms TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:48:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2021-04-16 06:49:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5403. [2021-04-16 06:49:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5398 states have (on average 1.2308262319377548) internal successors, (6644), 5398 states have internal predecessors, (6644), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 6648 transitions. [2021-04-16 06:49:01,812 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 6648 transitions. Word has length 102 [2021-04-16 06:49:01,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:01,812 INFO L480 AbstractCegarLoop]: Abstraction has 5403 states and 6648 transitions. [2021-04-16 06:49:01,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 6648 transitions. [2021-04-16 06:49:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:49:01,817 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:01,817 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:01,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-04-16 06:49:01,817 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:01,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:01,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1699585034, now seen corresponding path program 15 times [2021-04-16 06:49:01,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:01,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244313342] [2021-04-16 06:49:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:01,821 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:01,822 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:01,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:01,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:01,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:01,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:49:01,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:01,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:01,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:01,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:01,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:01,945 INFO L142 QuantifierPusher]: treesize reduction 249, result has 34.8 percent of original size [2021-04-16 06:49:01,946 INFO L147 QuantifierPusher]: treesize reduction 40, result has 69.9 percent of original size 93 [2021-04-16 06:49:01,985 INFO L142 QuantifierPusher]: treesize reduction 235, result has 44.7 percent of original size [2021-04-16 06:49:01,986 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.5 percent of original size 170 [2021-04-16 06:49:02,035 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.1 percent of original size [2021-04-16 06:49:02,036 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.6 percent of original size 173 [2021-04-16 06:49:02,081 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.0 percent of original size [2021-04-16 06:49:02,082 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 344 [2021-04-16 06:49:02,180 INFO L142 QuantifierPusher]: treesize reduction 151, result has 58.2 percent of original size [2021-04-16 06:49:02,181 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.7 percent of original size 203 [2021-04-16 06:49:02,217 INFO L142 QuantifierPusher]: treesize reduction 123, result has 59.9 percent of original size [2021-04-16 06:49:02,218 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.2 percent of original size 177 [2021-04-16 06:49:02,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:02,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:02,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:02,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244313342] [2021-04-16 06:49:02,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:02,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:49:02,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333964250] [2021-04-16 06:49:02,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:49:02,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:02,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:49:02,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:49:02,244 INFO L87 Difference]: Start difference. First operand 5403 states and 6648 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:06,195 INFO L93 Difference]: Finished difference Result 8604 states and 10564 transitions. [2021-04-16 06:49:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:49:06,196 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:49:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:06,203 INFO L225 Difference]: With dead ends: 8604 [2021-04-16 06:49:06,203 INFO L226 Difference]: Without dead ends: 5500 [2021-04-16 06:49:06,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 538.6ms TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:49:06,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2021-04-16 06:49:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 5394. [2021-04-16 06:49:09,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5389 states have (on average 1.2293560957506031) internal successors, (6625), 5389 states have internal predecessors, (6625), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 6629 transitions. [2021-04-16 06:49:09,560 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 6629 transitions. Word has length 102 [2021-04-16 06:49:09,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:09,560 INFO L480 AbstractCegarLoop]: Abstraction has 5394 states and 6629 transitions. [2021-04-16 06:49:09,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 6629 transitions. [2021-04-16 06:49:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:49:09,565 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:09,565 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:09,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-04-16 06:49:09,565 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:09,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:09,566 INFO L82 PathProgramCache]: Analyzing trace with hash -838187514, now seen corresponding path program 16 times [2021-04-16 06:49:09,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:09,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577105133] [2021-04-16 06:49:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:09,570 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:09,570 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:09,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:09,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:09,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:09,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:09,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:49:09,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:49:09,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:09,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:49:09,697 INFO L142 QuantifierPusher]: treesize reduction 249, result has 35.5 percent of original size [2021-04-16 06:49:09,697 INFO L147 QuantifierPusher]: treesize reduction 40, result has 70.8 percent of original size 97 [2021-04-16 06:49:09,745 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.2 percent of original size [2021-04-16 06:49:09,746 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.7 percent of original size 174 [2021-04-16 06:49:09,804 INFO L142 QuantifierPusher]: treesize reduction 235, result has 45.6 percent of original size [2021-04-16 06:49:09,805 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.8 percent of original size 177 [2021-04-16 06:49:09,854 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:49:09,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 06:49:09,879 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.2 percent of original size [2021-04-16 06:49:09,880 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 348 [2021-04-16 06:49:09,986 INFO L142 QuantifierPusher]: treesize reduction 148, result has 59.5 percent of original size [2021-04-16 06:49:09,987 INFO L147 QuantifierPusher]: treesize reduction 10, result has 95.4 percent of original size 207 [2021-04-16 06:49:10,043 INFO L142 QuantifierPusher]: treesize reduction 130, result has 58.2 percent of original size [2021-04-16 06:49:10,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-04-16 06:49:10,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:10,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:10,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:10,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:10,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577105133] [2021-04-16 06:49:10,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:10,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:49:10,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949060986] [2021-04-16 06:49:10,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:49:10,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:10,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:49:10,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:49:10,085 INFO L87 Difference]: Start difference. First operand 5394 states and 6629 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:13,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:13,898 INFO L93 Difference]: Finished difference Result 7817 states and 9538 transitions. [2021-04-16 06:49:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:49:13,899 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:49:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:13,904 INFO L225 Difference]: With dead ends: 7817 [2021-04-16 06:49:13,904 INFO L226 Difference]: Without dead ends: 5506 [2021-04-16 06:49:13,907 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 555.3ms TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:49:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5506 states. [2021-04-16 06:49:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 5346. [2021-04-16 06:49:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5341 states have (on average 1.2299194907320727) internal successors, (6569), 5341 states have internal predecessors, (6569), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 6573 transitions. [2021-04-16 06:49:17,253 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 6573 transitions. Word has length 102 [2021-04-16 06:49:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:17,253 INFO L480 AbstractCegarLoop]: Abstraction has 5346 states and 6573 transitions. [2021-04-16 06:49:17,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 6573 transitions. [2021-04-16 06:49:17,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:49:17,259 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:17,259 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:17,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-04-16 06:49:17,260 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:17,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1110700922, now seen corresponding path program 17 times [2021-04-16 06:49:17,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:17,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250003374] [2021-04-16 06:49:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:17,265 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:17,266 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:17,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:17,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:17,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:49:17,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:17,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:49:17,403 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-04-16 06:49:17,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:49:17,472 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:49:17,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:49:17,474 INFO L142 QuantifierPusher]: treesize reduction 22, result has 88.0 percent of original size [2021-04-16 06:49:17,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-04-16 06:49:17,547 INFO L142 QuantifierPusher]: treesize reduction 61, result has 82.6 percent of original size [2021-04-16 06:49:17,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-04-16 06:49:17,600 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:49:17,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:49:17,615 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.4 percent of original size [2021-04-16 06:49:17,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-04-16 06:49:17,676 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.4 percent of original size [2021-04-16 06:49:17,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-04-16 06:49:17,736 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.4 percent of original size [2021-04-16 06:49:17,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-04-16 06:49:17,803 INFO L142 QuantifierPusher]: treesize reduction 167, result has 78.2 percent of original size [2021-04-16 06:49:17,805 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.7 percent of original size 579 [2021-04-16 06:49:17,935 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 48 [2021-04-16 06:49:17,939 INFO L142 QuantifierPusher]: treesize reduction 173, result has 78.6 percent of original size [2021-04-16 06:49:17,941 INFO L147 QuantifierPusher]: treesize reduction 36, result has 94.3 percent of original size 600 [2021-04-16 06:49:18,055 INFO L142 QuantifierPusher]: treesize reduction 182, result has 77.6 percent of original size [2021-04-16 06:49:18,058 INFO L147 QuantifierPusher]: treesize reduction 27, result has 95.7 percent of original size 603 [2021-04-16 06:49:18,162 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.2 percent of original size [2021-04-16 06:49:18,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 406 [2021-04-16 06:49:18,225 INFO L142 QuantifierPusher]: treesize reduction 28, result has 58.2 percent of original size [2021-04-16 06:49:18,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:49:18,256 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-04-16 06:49:18,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:49:18,275 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.6 percent of original size [2021-04-16 06:49:18,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-04-16 06:49:18,322 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:49:18,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-04-16 06:49:18,351 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.6 percent of original size [2021-04-16 06:49:18,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 342 [2021-04-16 06:49:18,416 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:18,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:18,490 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:18,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:18,562 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:18,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:18,636 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:18,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:18,708 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:18,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:18,785 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:18,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:18,859 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:18,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:18,936 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:49:18,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:19,031 INFO L142 QuantifierPusher]: treesize reduction 152, result has 79.4 percent of original size [2021-04-16 06:49:19,034 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.6 percent of original size 565 [2021-04-16 06:49:19,198 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 47 [2021-04-16 06:49:19,201 INFO L142 QuantifierPusher]: treesize reduction 110, result has 79.0 percent of original size [2021-04-16 06:49:19,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 415 [2021-04-16 06:49:19,276 INFO L142 QuantifierPusher]: treesize reduction 110, result has 78.9 percent of original size [2021-04-16 06:49:19,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 411 [2021-04-16 06:49:19,281 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:49:19,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:49:19,283 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:49:19,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:19,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:19,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:19,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:19,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:19,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250003374] [2021-04-16 06:49:19,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:19,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-04-16 06:49:19,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241055893] [2021-04-16 06:49:19,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-04-16 06:49:19,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:19,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-04-16 06:49:19,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:49:19,320 INFO L87 Difference]: Start difference. First operand 5346 states and 6573 transitions. Second operand has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:26,482 INFO L93 Difference]: Finished difference Result 8056 states and 9906 transitions. [2021-04-16 06:49:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-04-16 06:49:26,483 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:49:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:26,490 INFO L225 Difference]: With dead ends: 8056 [2021-04-16 06:49:26,491 INFO L226 Difference]: Without dead ends: 7569 [2021-04-16 06:49:26,492 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 2843.1ms TimeCoverageRelationStatistics Valid=396, Invalid=2574, Unknown=0, NotChecked=0, Total=2970 [2021-04-16 06:49:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7569 states. [2021-04-16 06:49:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7569 to 5863. [2021-04-16 06:49:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5863 states, 5858 states have (on average 1.2280641857289176) internal successors, (7194), 5858 states have internal predecessors, (7194), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5863 states to 5863 states and 7198 transitions. [2021-04-16 06:49:30,159 INFO L78 Accepts]: Start accepts. Automaton has 5863 states and 7198 transitions. Word has length 102 [2021-04-16 06:49:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:30,159 INFO L480 AbstractCegarLoop]: Abstraction has 5863 states and 7198 transitions. [2021-04-16 06:49:30,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5863 states and 7198 transitions. [2021-04-16 06:49:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:49:30,164 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:30,164 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:30,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-04-16 06:49:30,164 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:30,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1363179322, now seen corresponding path program 18 times [2021-04-16 06:49:30,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:30,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098785446] [2021-04-16 06:49:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:30,169 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:30,169 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:30,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:30,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:30,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:30,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:49:30,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:30,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:49:30,271 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:49:30,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:49:30,287 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:49:30,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:49:30,288 INFO L142 QuantifierPusher]: treesize reduction 20, result has 83.1 percent of original size [2021-04-16 06:49:30,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:49:30,322 INFO L142 QuantifierPusher]: treesize reduction 59, result has 79.3 percent of original size [2021-04-16 06:49:30,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-04-16 06:49:30,360 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.6 percent of original size [2021-04-16 06:49:30,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-04-16 06:49:30,374 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:49:30,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:30,427 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:49:30,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:30,486 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:49:30,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:49:30,545 INFO L142 QuantifierPusher]: treesize reduction 138, result has 78.6 percent of original size [2021-04-16 06:49:30,547 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.1 percent of original size 487 [2021-04-16 06:49:30,663 INFO L142 QuantifierPusher]: treesize reduction 183, result has 78.4 percent of original size [2021-04-16 06:49:30,666 INFO L147 QuantifierPusher]: treesize reduction 27, result has 95.9 percent of original size 636 [2021-04-16 06:49:30,780 INFO L142 QuantifierPusher]: treesize reduction 184, result has 79.8 percent of original size [2021-04-16 06:49:30,782 INFO L147 QuantifierPusher]: treesize reduction 27, result has 96.3 percent of original size 701 [2021-04-16 06:49:30,892 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:49:30,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-04-16 06:49:30,954 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.8 percent of original size [2021-04-16 06:49:30,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:49:30,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:49:30,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:49:30,988 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.2 percent of original size [2021-04-16 06:49:30,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-04-16 06:49:31,034 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.8 percent of original size [2021-04-16 06:49:31,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-04-16 06:49:31,055 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:49:31,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:49:31,127 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:49:31,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:49:31,185 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:49:31,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:49:31,249 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:49:31,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:49:31,333 INFO L142 QuantifierPusher]: treesize reduction 162, result has 79.5 percent of original size [2021-04-16 06:49:31,335 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.8 percent of original size 610 [2021-04-16 06:49:31,473 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 39 [2021-04-16 06:49:31,477 INFO L142 QuantifierPusher]: treesize reduction 174, result has 74.1 percent of original size [2021-04-16 06:49:31,479 INFO L147 QuantifierPusher]: treesize reduction 27, result has 94.6 percent of original size 471 [2021-04-16 06:49:31,576 INFO L142 QuantifierPusher]: treesize reduction 170, result has 70.6 percent of original size [2021-04-16 06:49:31,578 INFO L147 QuantifierPusher]: treesize reduction 27, result has 93.4 percent of original size 382 [2021-04-16 06:49:31,581 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:49:31,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:49:31,583 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:49:31,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:31,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:31,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:31,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:31,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:31,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098785446] [2021-04-16 06:49:31,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:31,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:49:31,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992643209] [2021-04-16 06:49:31,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:49:31,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:31,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:49:31,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:49:31,619 INFO L87 Difference]: Start difference. First operand 5863 states and 7198 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:37,825 INFO L93 Difference]: Finished difference Result 8446 states and 10384 transitions. [2021-04-16 06:49:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:49:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:49:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:37,832 INFO L225 Difference]: With dead ends: 8446 [2021-04-16 06:49:37,832 INFO L226 Difference]: Without dead ends: 6952 [2021-04-16 06:49:37,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1754.9ms TimeCoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2021-04-16 06:49:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2021-04-16 06:49:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 5684. [2021-04-16 06:49:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5679 states have (on average 1.225567881669308) internal successors, (6960), 5679 states have internal predecessors, (6960), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 6964 transitions. [2021-04-16 06:49:41,341 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 6964 transitions. Word has length 102 [2021-04-16 06:49:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:41,341 INFO L480 AbstractCegarLoop]: Abstraction has 5684 states and 6964 transitions. [2021-04-16 06:49:41,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:41,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 6964 transitions. [2021-04-16 06:49:41,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:49:41,349 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:41,349 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:41,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-04-16 06:49:41,349 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:41,350 INFO L82 PathProgramCache]: Analyzing trace with hash -802128058, now seen corresponding path program 19 times [2021-04-16 06:49:41,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:41,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536753579] [2021-04-16 06:49:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:41,354 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:41,355 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:41,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:41,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:41,436 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,442 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,442 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,443 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,444 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,444 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,445 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,445 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,446 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,447 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:49:41,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:49:41,447 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-04-16 06:49:41,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:49:41,450 INFO L142 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size [2021-04-16 06:49:41,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:41,456 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 06:49:41,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:41,464 INFO L142 QuantifierPusher]: treesize reduction 41, result has 90.8 percent of original size [2021-04-16 06:49:41,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-04-16 06:49:41,594 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 31 [2021-04-16 06:49:41,597 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.2 percent of original size [2021-04-16 06:49:41,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-04-16 06:49:41,689 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size [2021-04-16 06:49:41,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-04-16 06:49:41,773 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:49:41,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:49:41,799 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:49:41,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:49:41,828 INFO L142 QuantifierPusher]: treesize reduction 123, result has 74.9 percent of original size [2021-04-16 06:49:41,829 INFO L147 QuantifierPusher]: treesize reduction 20, result has 94.6 percent of original size 347 [2021-04-16 06:49:41,963 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2021-04-16 06:49:41,965 INFO L142 QuantifierPusher]: treesize reduction 135, result has 63.1 percent of original size [2021-04-16 06:49:41,967 INFO L147 QuantifierPusher]: treesize reduction 27, result has 88.3 percent of original size 204 [2021-04-16 06:49:42,017 INFO L142 QuantifierPusher]: treesize reduction 127, result has 59.3 percent of original size [2021-04-16 06:49:42,018 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.2 percent of original size 178 [2021-04-16 06:49:42,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:42,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:42,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:42,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:42,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536753579] [2021-04-16 06:49:42,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:42,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:49:42,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025750087] [2021-04-16 06:49:42,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:49:42,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:42,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:49:42,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:49:42,048 INFO L87 Difference]: Start difference. First operand 5684 states and 6964 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:46,450 INFO L93 Difference]: Finished difference Result 7246 states and 8866 transitions. [2021-04-16 06:49:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:49:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:49:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:46,457 INFO L225 Difference]: With dead ends: 7246 [2021-04-16 06:49:46,457 INFO L226 Difference]: Without dead ends: 5936 [2021-04-16 06:49:46,459 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 922.5ms TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:49:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-04-16 06:49:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 5873. [2021-04-16 06:49:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5873 states, 5868 states have (on average 1.2171097477845945) internal successors, (7142), 5868 states have internal predecessors, (7142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5873 states to 5873 states and 7146 transitions. [2021-04-16 06:49:50,268 INFO L78 Accepts]: Start accepts. Automaton has 5873 states and 7146 transitions. Word has length 102 [2021-04-16 06:49:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:50,268 INFO L480 AbstractCegarLoop]: Abstraction has 5873 states and 7146 transitions. [2021-04-16 06:49:50,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5873 states and 7146 transitions. [2021-04-16 06:49:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:49:50,273 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:50,273 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:50,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-04-16 06:49:50,273 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:50,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:50,274 INFO L82 PathProgramCache]: Analyzing trace with hash -426857458, now seen corresponding path program 20 times [2021-04-16 06:49:50,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:50,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951834601] [2021-04-16 06:49:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:50,279 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:50,280 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:50,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:50,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:50,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:50,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:49:50,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:50,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:50,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:50,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:50,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:50,439 INFO L142 QuantifierPusher]: treesize reduction 129, result has 66.2 percent of original size [2021-04-16 06:49:50,440 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.0 percent of original size 243 [2021-04-16 06:49:50,526 INFO L142 QuantifierPusher]: treesize reduction 152, result has 64.2 percent of original size [2021-04-16 06:49:50,527 INFO L147 QuantifierPusher]: treesize reduction 7, result has 97.4 percent of original size 266 [2021-04-16 06:49:50,590 INFO L142 QuantifierPusher]: treesize reduction 152, result has 64.5 percent of original size [2021-04-16 06:49:50,591 INFO L147 QuantifierPusher]: treesize reduction 7, result has 97.5 percent of original size 269 [2021-04-16 06:49:50,649 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:49:50,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:49:50,676 INFO L142 QuantifierPusher]: treesize reduction 119, result has 71.6 percent of original size [2021-04-16 06:49:50,677 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.7 percent of original size 290 [2021-04-16 06:49:50,780 INFO L142 QuantifierPusher]: treesize reduction 135, result has 56.6 percent of original size [2021-04-16 06:49:50,781 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.3 percent of original size 166 [2021-04-16 06:49:50,826 INFO L142 QuantifierPusher]: treesize reduction 117, result has 54.5 percent of original size [2021-04-16 06:49:50,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:49:50,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:50,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:50,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:50,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951834601] [2021-04-16 06:49:50,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:50,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:49:50,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813112574] [2021-04-16 06:49:50,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:49:50,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:50,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:49:50,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:49:50,859 INFO L87 Difference]: Start difference. First operand 5873 states and 7146 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:49:55,238 INFO L93 Difference]: Finished difference Result 10005 states and 12132 transitions. [2021-04-16 06:49:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:49:55,239 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:49:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:49:55,244 INFO L225 Difference]: With dead ends: 10005 [2021-04-16 06:49:55,245 INFO L226 Difference]: Without dead ends: 5270 [2021-04-16 06:49:55,250 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 799.2ms TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:49:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2021-04-16 06:49:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 5217. [2021-04-16 06:49:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5212 states have (on average 1.2097083653108212) internal successors, (6305), 5212 states have internal predecessors, (6305), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 6309 transitions. [2021-04-16 06:49:58,785 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 6309 transitions. Word has length 102 [2021-04-16 06:49:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:49:58,786 INFO L480 AbstractCegarLoop]: Abstraction has 5217 states and 6309 transitions. [2021-04-16 06:49:58,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:49:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 6309 transitions. [2021-04-16 06:49:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:49:58,790 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:49:58,790 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:49:58,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-04-16 06:49:58,790 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:49:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:49:58,790 INFO L82 PathProgramCache]: Analyzing trace with hash 480346890, now seen corresponding path program 21 times [2021-04-16 06:49:58,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:49:58,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939489106] [2021-04-16 06:49:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:49:58,794 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:49:58,795 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:49:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:58,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:58,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:49:58,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:49:58,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:49:58,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:49:58,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:58,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:58,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:58,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:58,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:49:58,931 INFO L142 QuantifierPusher]: treesize reduction 129, result has 66.2 percent of original size [2021-04-16 06:49:58,932 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.0 percent of original size 243 [2021-04-16 06:49:59,018 INFO L142 QuantifierPusher]: treesize reduction 152, result has 64.2 percent of original size [2021-04-16 06:49:59,019 INFO L147 QuantifierPusher]: treesize reduction 7, result has 97.4 percent of original size 266 [2021-04-16 06:49:59,100 INFO L142 QuantifierPusher]: treesize reduction 152, result has 64.5 percent of original size [2021-04-16 06:49:59,102 INFO L147 QuantifierPusher]: treesize reduction 7, result has 97.5 percent of original size 269 [2021-04-16 06:49:59,179 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.0 percent of original size [2021-04-16 06:49:59,180 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 344 [2021-04-16 06:49:59,294 INFO L142 QuantifierPusher]: treesize reduction 148, result has 59.0 percent of original size [2021-04-16 06:49:59,295 INFO L147 QuantifierPusher]: treesize reduction 10, result has 95.3 percent of original size 203 [2021-04-16 06:49:59,340 INFO L142 QuantifierPusher]: treesize reduction 130, result has 57.7 percent of original size [2021-04-16 06:49:59,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-04-16 06:49:59,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:49:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:49:59,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:49:59,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:49:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:49:59,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939489106] [2021-04-16 06:49:59,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:49:59,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:49:59,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022944902] [2021-04-16 06:49:59,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:49:59,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:49:59,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:49:59,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:49:59,371 INFO L87 Difference]: Start difference. First operand 5217 states and 6309 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:03,526 INFO L93 Difference]: Finished difference Result 8237 states and 9947 transitions. [2021-04-16 06:50:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:50:03,527 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:50:03,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:03,532 INFO L225 Difference]: With dead ends: 8237 [2021-04-16 06:50:03,532 INFO L226 Difference]: Without dead ends: 4752 [2021-04-16 06:50:03,537 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 772.3ms TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:50:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-04-16 06:50:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4711. [2021-04-16 06:50:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4711 states, 4706 states have (on average 1.2029324266893329) internal successors, (5661), 4706 states have internal predecessors, (5661), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4711 states to 4711 states and 5665 transitions. [2021-04-16 06:50:06,998 INFO L78 Accepts]: Start accepts. Automaton has 4711 states and 5665 transitions. Word has length 102 [2021-04-16 06:50:06,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:06,998 INFO L480 AbstractCegarLoop]: Abstraction has 4711 states and 5665 transitions. [2021-04-16 06:50:06,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:06,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4711 states and 5665 transitions. [2021-04-16 06:50:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:50:07,002 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:07,002 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:07,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-04-16 06:50:07,002 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:07,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:07,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1224115570, now seen corresponding path program 22 times [2021-04-16 06:50:07,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:07,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323180612] [2021-04-16 06:50:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:07,007 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:07,008 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:07,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:07,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:07,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:07,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:07,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:07,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:07,128 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:50:07,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:50:07,145 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:50:07,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:50:07,147 INFO L142 QuantifierPusher]: treesize reduction 20, result has 83.1 percent of original size [2021-04-16 06:50:07,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:50:07,188 INFO L142 QuantifierPusher]: treesize reduction 59, result has 79.3 percent of original size [2021-04-16 06:50:07,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-04-16 06:50:07,227 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.6 percent of original size [2021-04-16 06:50:07,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-04-16 06:50:07,241 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:50:07,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:50:07,305 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:50:07,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:50:07,367 INFO L142 QuantifierPusher]: treesize reduction 138, result has 78.6 percent of original size [2021-04-16 06:50:07,369 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.1 percent of original size 487 [2021-04-16 06:50:07,497 INFO L142 QuantifierPusher]: treesize reduction 188, result has 77.8 percent of original size [2021-04-16 06:50:07,500 INFO L147 QuantifierPusher]: treesize reduction 20, result has 97.0 percent of original size 638 [2021-04-16 06:50:07,629 INFO L142 QuantifierPusher]: treesize reduction 189, result has 79.4 percent of original size [2021-04-16 06:50:07,632 INFO L147 QuantifierPusher]: treesize reduction 20, result has 97.3 percent of original size 708 [2021-04-16 06:50:07,766 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:50:07,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:50:07,843 INFO L142 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size [2021-04-16 06:50:07,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:50:07,868 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:50:07,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:50:07,885 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:50:07,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:50:07,942 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:50:07,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:50:07,967 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:50:07,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:50:08,036 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:08,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:08,103 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:08,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:08,173 INFO L142 QuantifierPusher]: treesize reduction 172, result has 78.4 percent of original size [2021-04-16 06:50:08,175 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 615 [2021-04-16 06:50:08,320 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2021-04-16 06:50:08,324 INFO L142 QuantifierPusher]: treesize reduction 181, result has 73.1 percent of original size [2021-04-16 06:50:08,326 INFO L147 QuantifierPusher]: treesize reduction 20, result has 95.9 percent of original size 472 [2021-04-16 06:50:08,420 INFO L142 QuantifierPusher]: treesize reduction 173, result has 72.1 percent of original size [2021-04-16 06:50:08,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 446 [2021-04-16 06:50:08,425 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:50:08,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:50:08,427 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:50:08,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:08,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:08,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:08,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:08,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:08,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:08,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323180612] [2021-04-16 06:50:08,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:08,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:50:08,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632603925] [2021-04-16 06:50:08,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:50:08,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:08,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:50:08,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:50:08,453 INFO L87 Difference]: Start difference. First operand 4711 states and 5665 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:13,855 INFO L93 Difference]: Finished difference Result 6986 states and 8477 transitions. [2021-04-16 06:50:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-16 06:50:13,856 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:50:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:13,863 INFO L225 Difference]: With dead ends: 6986 [2021-04-16 06:50:13,864 INFO L226 Difference]: Without dead ends: 5834 [2021-04-16 06:50:13,866 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1692.3ms TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2021-04-16 06:50:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2021-04-16 06:50:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 4471. [2021-04-16 06:50:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4471 states, 4466 states have (on average 1.1912225705329154) internal successors, (5320), 4466 states have internal predecessors, (5320), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4471 states to 4471 states and 5324 transitions. [2021-04-16 06:50:16,943 INFO L78 Accepts]: Start accepts. Automaton has 4471 states and 5324 transitions. Word has length 102 [2021-04-16 06:50:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:16,943 INFO L480 AbstractCegarLoop]: Abstraction has 4471 states and 5324 transitions. [2021-04-16 06:50:16,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4471 states and 5324 transitions. [2021-04-16 06:50:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:50:16,947 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:16,947 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:16,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-04-16 06:50:16,947 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:16,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:16,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1481110260, now seen corresponding path program 23 times [2021-04-16 06:50:16,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:16,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083902241] [2021-04-16 06:50:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:16,952 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:16,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:17,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:17,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:17,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:50:17,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:50:17,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:17,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:17,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:17,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:17,117 INFO L142 QuantifierPusher]: treesize reduction 119, result has 68.8 percent of original size [2021-04-16 06:50:17,118 INFO L147 QuantifierPusher]: treesize reduction 20, result has 92.4 percent of original size 243 [2021-04-16 06:50:17,222 INFO L142 QuantifierPusher]: treesize reduction 134, result has 68.5 percent of original size [2021-04-16 06:50:17,223 INFO L147 QuantifierPusher]: treesize reduction 27, result has 90.7 percent of original size 264 [2021-04-16 06:50:17,320 INFO L142 QuantifierPusher]: treesize reduction 134, result has 68.7 percent of original size [2021-04-16 06:50:17,322 INFO L147 QuantifierPusher]: treesize reduction 27, result has 90.8 percent of original size 267 [2021-04-16 06:50:17,384 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:50:17,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:50:17,410 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:50:17,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:50:17,438 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:50:17,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:50:17,467 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:50:17,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:50:17,500 INFO L142 QuantifierPusher]: treesize reduction 131, result has 68.9 percent of original size [2021-04-16 06:50:17,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-04-16 06:50:17,624 INFO L142 QuantifierPusher]: treesize reduction 67, result has 68.7 percent of original size [2021-04-16 06:50:17,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-04-16 06:50:17,665 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.9 percent of original size [2021-04-16 06:50:17,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-04-16 06:50:17,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:17,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:17,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:17,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:17,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083902241] [2021-04-16 06:50:17,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:17,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:50:17,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621917500] [2021-04-16 06:50:17,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:50:17,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:50:17,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:50:17,702 INFO L87 Difference]: Start difference. First operand 4471 states and 5324 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:22,028 INFO L93 Difference]: Finished difference Result 5046 states and 6025 transitions. [2021-04-16 06:50:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:50:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:50:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:22,034 INFO L225 Difference]: With dead ends: 5046 [2021-04-16 06:50:22,034 INFO L226 Difference]: Without dead ends: 4623 [2021-04-16 06:50:22,035 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1040.4ms TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:50:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2021-04-16 06:50:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 4303. [2021-04-16 06:50:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4303 states, 4298 states have (on average 1.193113075849232) internal successors, (5128), 4298 states have internal predecessors, (5128), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 5132 transitions. [2021-04-16 06:50:25,060 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 5132 transitions. Word has length 102 [2021-04-16 06:50:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:25,060 INFO L480 AbstractCegarLoop]: Abstraction has 4303 states and 5132 transitions. [2021-04-16 06:50:25,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 5132 transitions. [2021-04-16 06:50:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:50:25,064 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:25,064 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:25,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-04-16 06:50:25,064 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:25,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1874137270, now seen corresponding path program 24 times [2021-04-16 06:50:25,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:25,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301669619] [2021-04-16 06:50:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:25,070 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:25,071 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:25,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:25,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:25,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:25,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:50:25,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:25,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:50:25,191 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:50:25,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:50:25,208 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:50:25,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:50:25,209 INFO L142 QuantifierPusher]: treesize reduction 20, result has 83.1 percent of original size [2021-04-16 06:50:25,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:50:25,257 INFO L142 QuantifierPusher]: treesize reduction 59, result has 79.3 percent of original size [2021-04-16 06:50:25,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-04-16 06:50:25,297 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.6 percent of original size [2021-04-16 06:50:25,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-04-16 06:50:25,311 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:50:25,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:50:25,370 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:50:25,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:50:25,429 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:50:25,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:50:25,491 INFO L142 QuantifierPusher]: treesize reduction 138, result has 78.6 percent of original size [2021-04-16 06:50:25,493 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.1 percent of original size 487 [2021-04-16 06:50:25,610 INFO L142 QuantifierPusher]: treesize reduction 183, result has 78.4 percent of original size [2021-04-16 06:50:25,612 INFO L147 QuantifierPusher]: treesize reduction 27, result has 95.9 percent of original size 636 [2021-04-16 06:50:25,735 INFO L142 QuantifierPusher]: treesize reduction 184, result has 79.9 percent of original size [2021-04-16 06:50:25,737 INFO L147 QuantifierPusher]: treesize reduction 27, result has 96.3 percent of original size 706 [2021-04-16 06:50:25,865 INFO L142 QuantifierPusher]: treesize reduction 40, result has 91.1 percent of original size [2021-04-16 06:50:25,866 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.8 percent of original size 402 [2021-04-16 06:50:25,942 INFO L142 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size [2021-04-16 06:50:25,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:50:25,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:50:25,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:50:25,979 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:50:25,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:50:26,032 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:50:26,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:50:26,060 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:50:26,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:50:26,152 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:26,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:26,223 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:26,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:26,298 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:26,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:26,375 INFO L142 QuantifierPusher]: treesize reduction 162, result has 79.7 percent of original size [2021-04-16 06:50:26,378 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.9 percent of original size 615 [2021-04-16 06:50:26,541 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2021-04-16 06:50:26,546 INFO L142 QuantifierPusher]: treesize reduction 174, result has 74.1 percent of original size [2021-04-16 06:50:26,549 INFO L147 QuantifierPusher]: treesize reduction 27, result has 94.6 percent of original size 472 [2021-04-16 06:50:26,658 INFO L142 QuantifierPusher]: treesize reduction 166, result has 73.2 percent of original size [2021-04-16 06:50:26,660 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.5 percent of original size 446 [2021-04-16 06:50:26,664 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:50:26,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:50:26,667 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:50:26,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:26,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:26,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:26,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:26,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:26,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:26,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301669619] [2021-04-16 06:50:26,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:26,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:50:26,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070481878] [2021-04-16 06:50:26,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:50:26,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:26,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:50:26,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:50:26,712 INFO L87 Difference]: Start difference. First operand 4303 states and 5132 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:31,852 INFO L93 Difference]: Finished difference Result 6245 states and 7529 transitions. [2021-04-16 06:50:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-16 06:50:31,853 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:50:31,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:31,859 INFO L225 Difference]: With dead ends: 6245 [2021-04-16 06:50:31,859 INFO L226 Difference]: Without dead ends: 5276 [2021-04-16 06:50:31,861 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1965.7ms TimeCoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2021-04-16 06:50:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2021-04-16 06:50:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 3844. [2021-04-16 06:50:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3839 states have (on average 1.180776243813493) internal successors, (4533), 3839 states have internal predecessors, (4533), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 4537 transitions. [2021-04-16 06:50:34,703 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 4537 transitions. Word has length 102 [2021-04-16 06:50:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:34,703 INFO L480 AbstractCegarLoop]: Abstraction has 3844 states and 4537 transitions. [2021-04-16 06:50:34,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 4537 transitions. [2021-04-16 06:50:34,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:50:34,706 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:34,706 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:34,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-04-16 06:50:34,706 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:34,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:34,707 INFO L82 PathProgramCache]: Analyzing trace with hash -753755636, now seen corresponding path program 25 times [2021-04-16 06:50:34,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:34,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213762305] [2021-04-16 06:50:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:34,721 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:34,722 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:34,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:34,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:50:34,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:50:34,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:50:34,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:34,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:34,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:34,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:34,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:34,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:34,866 INFO L142 QuantifierPusher]: treesize reduction 139, result has 63.6 percent of original size [2021-04-16 06:50:34,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-04-16 06:50:34,957 INFO L142 QuantifierPusher]: treesize reduction 144, result has 66.1 percent of original size [2021-04-16 06:50:34,958 INFO L147 QuantifierPusher]: treesize reduction 17, result has 94.0 percent of original size 264 [2021-04-16 06:50:35,044 INFO L142 QuantifierPusher]: treesize reduction 144, result has 66.4 percent of original size [2021-04-16 06:50:35,046 INFO L147 QuantifierPusher]: treesize reduction 17, result has 94.0 percent of original size 267 [2021-04-16 06:50:35,127 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:50:35,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:50:35,156 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:50:35,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:50:35,184 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:50:35,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:50:35,217 INFO L142 QuantifierPusher]: treesize reduction 131, result has 68.9 percent of original size [2021-04-16 06:50:35,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-04-16 06:50:35,338 INFO L142 QuantifierPusher]: treesize reduction 67, result has 68.7 percent of original size [2021-04-16 06:50:35,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-04-16 06:50:35,378 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.9 percent of original size [2021-04-16 06:50:35,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-04-16 06:50:35,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:35,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:35,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:35,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:35,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213762305] [2021-04-16 06:50:35,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:35,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:50:35,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624014257] [2021-04-16 06:50:35,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:50:35,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:35,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:50:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:50:35,417 INFO L87 Difference]: Start difference. First operand 3844 states and 4537 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:39,739 INFO L93 Difference]: Finished difference Result 4431 states and 5270 transitions. [2021-04-16 06:50:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:50:39,741 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:50:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:39,745 INFO L225 Difference]: With dead ends: 4431 [2021-04-16 06:50:39,746 INFO L226 Difference]: Without dead ends: 4080 [2021-04-16 06:50:39,747 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1051.0ms TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:50:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2021-04-16 06:50:42,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 3964. [2021-04-16 06:50:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3964 states, 3959 states have (on average 1.1813589290224804) internal successors, (4677), 3959 states have internal predecessors, (4677), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 4681 transitions. [2021-04-16 06:50:42,700 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 4681 transitions. Word has length 102 [2021-04-16 06:50:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:42,700 INFO L480 AbstractCegarLoop]: Abstraction has 3964 states and 4681 transitions. [2021-04-16 06:50:42,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 4681 transitions. [2021-04-16 06:50:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:50:42,703 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:42,703 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:42,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-04-16 06:50:42,703 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:42,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1146782646, now seen corresponding path program 26 times [2021-04-16 06:50:42,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:42,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612578354] [2021-04-16 06:50:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:42,713 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:42,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:42,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:42,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:42,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:50:42,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:42,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:42,875 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-04-16 06:50:42,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:50:42,901 INFO L142 QuantifierPusher]: treesize reduction 16, result has 65.2 percent of original size [2021-04-16 06:50:42,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:50:42,903 INFO L142 QuantifierPusher]: treesize reduction 22, result has 87.8 percent of original size [2021-04-16 06:50:42,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-04-16 06:50:42,986 INFO L142 QuantifierPusher]: treesize reduction 61, result has 82.4 percent of original size [2021-04-16 06:50:42,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-04-16 06:50:43,041 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.4 percent of original size [2021-04-16 06:50:43,043 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.5 percent of original size 357 [2021-04-16 06:50:43,060 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.4 percent of original size [2021-04-16 06:50:43,062 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.6 percent of original size 360 [2021-04-16 06:50:43,133 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.4 percent of original size [2021-04-16 06:50:43,134 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.6 percent of original size 360 [2021-04-16 06:50:43,209 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.2 percent of original size [2021-04-16 06:50:43,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 360 [2021-04-16 06:50:43,289 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.2 percent of original size [2021-04-16 06:50:43,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 360 [2021-04-16 06:50:43,373 INFO L142 QuantifierPusher]: treesize reduction 177, result has 76.8 percent of original size [2021-04-16 06:50:43,375 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.3 percent of original size 575 [2021-04-16 06:50:43,521 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 45 [2021-04-16 06:50:43,526 INFO L142 QuantifierPusher]: treesize reduction 200, result has 75.2 percent of original size [2021-04-16 06:50:43,528 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.8 percent of original size 598 [2021-04-16 06:50:43,654 INFO L142 QuantifierPusher]: treesize reduction 200, result has 75.2 percent of original size [2021-04-16 06:50:43,657 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.8 percent of original size 601 [2021-04-16 06:50:43,782 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:50:43,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:50:43,860 INFO L142 QuantifierPusher]: treesize reduction 19, result has 69.8 percent of original size [2021-04-16 06:50:43,861 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-04-16 06:50:43,895 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:50:43,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:50:43,917 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:50:43,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:50:43,971 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:50:43,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:50:44,004 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:50:44,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:50:44,080 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:44,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:44,158 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:44,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:44,239 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:44,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:44,339 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:44,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:44,424 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:44,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:44,515 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:44,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:44,608 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:50:44,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:50:44,701 INFO L142 QuantifierPusher]: treesize reduction 172, result has 78.4 percent of original size [2021-04-16 06:50:44,704 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 615 [2021-04-16 06:50:44,877 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2021-04-16 06:50:44,881 INFO L142 QuantifierPusher]: treesize reduction 189, result has 71.9 percent of original size [2021-04-16 06:50:44,883 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.9 percent of original size 474 [2021-04-16 06:50:44,992 INFO L142 QuantifierPusher]: treesize reduction 185, result has 68.0 percent of original size [2021-04-16 06:50:44,994 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.5 percent of original size 384 [2021-04-16 06:50:44,998 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:50:44,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:50:45,000 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:50:45,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:45,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:45,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:45,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:45,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:45,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612578354] [2021-04-16 06:50:45,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:45,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-04-16 06:50:45,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399221697] [2021-04-16 06:50:45,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-04-16 06:50:45,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:45,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-04-16 06:50:45,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:50:45,047 INFO L87 Difference]: Start difference. First operand 3964 states and 4681 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:52,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:50:52,029 INFO L93 Difference]: Finished difference Result 6050 states and 7306 transitions. [2021-04-16 06:50:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-16 06:50:52,031 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:50:52,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:50:52,036 INFO L225 Difference]: With dead ends: 6050 [2021-04-16 06:50:52,036 INFO L226 Difference]: Without dead ends: 5584 [2021-04-16 06:50:52,037 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 3329.1ms TimeCoverageRelationStatistics Valid=436, Invalid=2870, Unknown=0, NotChecked=0, Total=3306 [2021-04-16 06:50:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2021-04-16 06:50:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 4388. [2021-04-16 06:50:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4383 states have (on average 1.1770476842345425) internal successors, (5159), 4383 states have internal predecessors, (5159), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:55,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 5163 transitions. [2021-04-16 06:50:55,478 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 5163 transitions. Word has length 102 [2021-04-16 06:50:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:50:55,478 INFO L480 AbstractCegarLoop]: Abstraction has 4388 states and 5163 transitions. [2021-04-16 06:50:55,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:50:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 5163 transitions. [2021-04-16 06:50:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:50:55,481 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:50:55,481 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:50:55,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-04-16 06:50:55,481 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:50:55,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:50:55,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1514733942, now seen corresponding path program 27 times [2021-04-16 06:50:55,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:50:55,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129350162] [2021-04-16 06:50:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:50:55,486 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:50:55,487 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:50:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:55,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:55,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:55,585 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,591 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,592 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,593 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,593 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,594 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,595 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,595 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,596 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,597 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:50:55,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:50:55,597 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-04-16 06:50:55,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:50:55,601 INFO L142 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size [2021-04-16 06:50:55,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:50:55,606 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 06:50:55,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:50:55,616 INFO L142 QuantifierPusher]: treesize reduction 41, result has 90.8 percent of original size [2021-04-16 06:50:55,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-04-16 06:50:55,746 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 31 [2021-04-16 06:50:55,749 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.2 percent of original size [2021-04-16 06:50:55,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-04-16 06:50:55,853 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size [2021-04-16 06:50:55,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-04-16 06:50:55,942 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:50:55,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:50:55,968 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:50:55,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:50:55,995 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:50:55,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:50:56,027 INFO L142 QuantifierPusher]: treesize reduction 133, result has 72.9 percent of original size [2021-04-16 06:50:56,028 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 347 [2021-04-16 06:50:56,151 INFO L142 QuantifierPusher]: treesize reduction 153, result has 58.2 percent of original size [2021-04-16 06:50:56,153 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.7 percent of original size 206 [2021-04-16 06:50:56,204 INFO L142 QuantifierPusher]: treesize reduction 125, result has 59.9 percent of original size [2021-04-16 06:50:56,205 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.3 percent of original size 180 [2021-04-16 06:50:56,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:56,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:56,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:50:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:50:56,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:50:56,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:50:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:50:56,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129350162] [2021-04-16 06:50:56,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:50:56,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:50:56,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685801624] [2021-04-16 06:50:56,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:50:56,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:50:56,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:50:56,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:50:56,239 INFO L87 Difference]: Start difference. First operand 4388 states and 5163 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:00,341 INFO L93 Difference]: Finished difference Result 6677 states and 7854 transitions. [2021-04-16 06:51:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:51:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:51:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:00,348 INFO L225 Difference]: With dead ends: 6677 [2021-04-16 06:51:00,348 INFO L226 Difference]: Without dead ends: 4967 [2021-04-16 06:51:00,350 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 959.3ms TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:51:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4967 states. [2021-04-16 06:51:03,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4967 to 4397. [2021-04-16 06:51:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 4392 states have (on average 1.1762295081967213) internal successors, (5166), 4392 states have internal predecessors, (5166), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 5170 transitions. [2021-04-16 06:51:03,450 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 5170 transitions. Word has length 102 [2021-04-16 06:51:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:03,450 INFO L480 AbstractCegarLoop]: Abstraction has 4397 states and 5170 transitions. [2021-04-16 06:51:03,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 5170 transitions. [2021-04-16 06:51:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:51:03,454 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:03,454 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:03,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-04-16 06:51:03,454 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:03,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:03,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1800697224, now seen corresponding path program 28 times [2021-04-16 06:51:03,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:03,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582226516] [2021-04-16 06:51:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:03,464 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:03,466 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:03,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:03,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:03,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:51:03,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:51:03,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:51:03,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:03,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:03,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:03,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:03,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:03,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:03,651 INFO L142 QuantifierPusher]: treesize reduction 129, result has 66.2 percent of original size [2021-04-16 06:51:03,653 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.0 percent of original size 243 [2021-04-16 06:51:03,742 INFO L142 QuantifierPusher]: treesize reduction 149, result has 64.9 percent of original size [2021-04-16 06:51:03,744 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.4 percent of original size 266 [2021-04-16 06:51:03,813 INFO L142 QuantifierPusher]: treesize reduction 149, result has 65.2 percent of original size [2021-04-16 06:51:03,814 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.4 percent of original size 269 [2021-04-16 06:51:03,883 INFO L142 QuantifierPusher]: treesize reduction 109, result has 74.1 percent of original size [2021-04-16 06:51:03,884 INFO L147 QuantifierPusher]: treesize reduction 22, result has 92.9 percent of original size 290 [2021-04-16 06:51:04,006 INFO L142 QuantifierPusher]: treesize reduction 133, result has 57.2 percent of original size [2021-04-16 06:51:04,007 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.4 percent of original size 168 [2021-04-16 06:51:04,055 INFO L142 QuantifierPusher]: treesize reduction 115, result has 55.3 percent of original size [2021-04-16 06:51:04,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-04-16 06:51:04,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:04,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:04,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:04,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:04,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:04,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582226516] [2021-04-16 06:51:04,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:04,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:51:04,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211892812] [2021-04-16 06:51:04,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:51:04,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:04,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:51:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:51:04,101 INFO L87 Difference]: Start difference. First operand 4397 states and 5170 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:08,259 INFO L93 Difference]: Finished difference Result 6443 states and 7616 transitions. [2021-04-16 06:51:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:51:08,260 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:51:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:08,265 INFO L225 Difference]: With dead ends: 6443 [2021-04-16 06:51:08,265 INFO L226 Difference]: Without dead ends: 4109 [2021-04-16 06:51:08,269 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 860.5ms TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:51:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-04-16 06:51:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4068. [2021-04-16 06:51:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 4063 states have (on average 1.1747477233571253) internal successors, (4773), 4063 states have internal predecessors, (4773), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 4777 transitions. [2021-04-16 06:51:11,112 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 4777 transitions. Word has length 102 [2021-04-16 06:51:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:11,112 INFO L480 AbstractCegarLoop]: Abstraction has 4068 states and 4777 transitions. [2021-04-16 06:51:11,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 4777 transitions. [2021-04-16 06:51:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:51:11,115 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:11,115 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:11,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-04-16 06:51:11,115 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:11,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1587065724, now seen corresponding path program 29 times [2021-04-16 06:51:11,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:11,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057971420] [2021-04-16 06:51:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:11,120 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:11,121 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:11,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:11,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:11,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:51:11,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:51:11,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:51:11,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:11,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:11,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:11,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:11,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:11,294 INFO L142 QuantifierPusher]: treesize reduction 119, result has 68.8 percent of original size [2021-04-16 06:51:11,296 INFO L147 QuantifierPusher]: treesize reduction 20, result has 92.4 percent of original size 243 [2021-04-16 06:51:11,390 INFO L142 QuantifierPusher]: treesize reduction 151, result has 64.5 percent of original size [2021-04-16 06:51:11,391 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.4 percent of original size 264 [2021-04-16 06:51:11,463 INFO L142 QuantifierPusher]: treesize reduction 151, result has 64.7 percent of original size [2021-04-16 06:51:11,465 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.4 percent of original size 267 [2021-04-16 06:51:11,550 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:51:11,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:51:11,576 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:51:11,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:51:11,605 INFO L142 QuantifierPusher]: treesize reduction 131, result has 68.9 percent of original size [2021-04-16 06:51:11,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-04-16 06:51:11,717 INFO L142 QuantifierPusher]: treesize reduction 67, result has 68.7 percent of original size [2021-04-16 06:51:11,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-04-16 06:51:11,753 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.9 percent of original size [2021-04-16 06:51:11,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-04-16 06:51:11,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:11,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:11,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:11,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057971420] [2021-04-16 06:51:11,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:11,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:51:11,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786976718] [2021-04-16 06:51:11,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:51:11,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:11,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:51:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:51:11,787 INFO L87 Difference]: Start difference. First operand 4068 states and 4777 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:16,022 INFO L93 Difference]: Finished difference Result 4682 states and 5554 transitions. [2021-04-16 06:51:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:51:16,023 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:51:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:16,029 INFO L225 Difference]: With dead ends: 4682 [2021-04-16 06:51:16,029 INFO L226 Difference]: Without dead ends: 4277 [2021-04-16 06:51:16,030 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 967.3ms TimeCoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:51:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-04-16 06:51:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4092. [2021-04-16 06:51:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4087 states have (on average 1.173721556153658) internal successors, (4797), 4087 states have internal predecessors, (4797), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 4801 transitions. [2021-04-16 06:51:19,212 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 4801 transitions. Word has length 102 [2021-04-16 06:51:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:19,212 INFO L480 AbstractCegarLoop]: Abstraction has 4092 states and 4801 transitions. [2021-04-16 06:51:19,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 4801 transitions. [2021-04-16 06:51:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:51:19,215 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:19,215 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:19,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-04-16 06:51:19,215 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:19,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1980092734, now seen corresponding path program 30 times [2021-04-16 06:51:19,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:19,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581592831] [2021-04-16 06:51:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:19,228 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:19,228 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:19,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:19,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:19,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:51:19,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:19,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:19,365 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-04-16 06:51:19,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:51:19,386 INFO L142 QuantifierPusher]: treesize reduction 16, result has 65.2 percent of original size [2021-04-16 06:51:19,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:51:19,388 INFO L142 QuantifierPusher]: treesize reduction 22, result has 87.8 percent of original size [2021-04-16 06:51:19,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-04-16 06:51:19,464 INFO L142 QuantifierPusher]: treesize reduction 61, result has 82.4 percent of original size [2021-04-16 06:51:19,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-04-16 06:51:19,519 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.4 percent of original size [2021-04-16 06:51:19,521 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.5 percent of original size 357 [2021-04-16 06:51:19,539 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:19,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:19,607 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:19,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:19,672 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:19,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:19,736 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:19,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:19,809 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:19,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:19,878 INFO L142 QuantifierPusher]: treesize reduction 177, result has 76.8 percent of original size [2021-04-16 06:51:19,880 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.3 percent of original size 575 [2021-04-16 06:51:20,012 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 45 [2021-04-16 06:51:20,016 INFO L142 QuantifierPusher]: treesize reduction 197, result has 75.5 percent of original size [2021-04-16 06:51:20,018 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 598 [2021-04-16 06:51:20,151 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 41 [2021-04-16 06:51:20,157 INFO L142 QuantifierPusher]: treesize reduction 197, result has 75.6 percent of original size [2021-04-16 06:51:20,159 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 601 [2021-04-16 06:51:20,284 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:51:20,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:51:20,364 INFO L142 QuantifierPusher]: treesize reduction 19, result has 69.8 percent of original size [2021-04-16 06:51:20,365 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-04-16 06:51:20,404 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:51:20,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:51:20,427 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:51:20,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:51:20,482 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:51:20,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:51:20,517 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:51:20,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:51:20,598 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:20,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:20,679 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:20,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:20,761 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:20,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:20,844 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:20,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:20,929 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:20,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:21,016 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:21,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:21,109 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:21,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:21,203 INFO L142 QuantifierPusher]: treesize reduction 172, result has 78.4 percent of original size [2021-04-16 06:51:21,206 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 615 [2021-04-16 06:51:21,393 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2021-04-16 06:51:21,398 INFO L142 QuantifierPusher]: treesize reduction 189, result has 71.9 percent of original size [2021-04-16 06:51:21,400 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.9 percent of original size 474 [2021-04-16 06:51:21,538 INFO L142 QuantifierPusher]: treesize reduction 185, result has 68.0 percent of original size [2021-04-16 06:51:21,541 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.5 percent of original size 384 [2021-04-16 06:51:21,545 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:51:21,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:51:21,548 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:51:21,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:21,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:21,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:21,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:21,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:21,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581592831] [2021-04-16 06:51:21,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:21,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-04-16 06:51:21,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680010917] [2021-04-16 06:51:21,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-04-16 06:51:21,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:21,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-04-16 06:51:21,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:51:21,597 INFO L87 Difference]: Start difference. First operand 4092 states and 4801 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:30,207 INFO L93 Difference]: Finished difference Result 6178 states and 7426 transitions. [2021-04-16 06:51:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-04-16 06:51:30,209 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:51:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:30,214 INFO L225 Difference]: With dead ends: 6178 [2021-04-16 06:51:30,214 INFO L226 Difference]: Without dead ends: 5712 [2021-04-16 06:51:30,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 3603.9ms TimeCoverageRelationStatistics Valid=462, Invalid=3198, Unknown=0, NotChecked=0, Total=3660 [2021-04-16 06:51:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2021-04-16 06:51:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 4068. [2021-04-16 06:51:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 4063 states have (on average 1.1747477233571253) internal successors, (4773), 4063 states have internal predecessors, (4773), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 4777 transitions. [2021-04-16 06:51:33,222 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 4777 transitions. Word has length 102 [2021-04-16 06:51:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:33,222 INFO L480 AbstractCegarLoop]: Abstraction has 4068 states and 4777 transitions. [2021-04-16 06:51:33,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 4777 transitions. [2021-04-16 06:51:33,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:51:33,225 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:33,225 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:33,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-04-16 06:51:33,225 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:33,226 INFO L82 PathProgramCache]: Analyzing trace with hash 39124806, now seen corresponding path program 31 times [2021-04-16 06:51:33,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:33,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200620644] [2021-04-16 06:51:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:33,241 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:33,242 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:33,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:33,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:33,335 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,343 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,344 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,344 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,345 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,346 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,347 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,348 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,348 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,349 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:51:33,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:33,350 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-04-16 06:51:33,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:51:33,354 INFO L142 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size [2021-04-16 06:51:33,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:51:33,360 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 06:51:33,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:33,373 INFO L142 QuantifierPusher]: treesize reduction 41, result has 90.8 percent of original size [2021-04-16 06:51:33,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-04-16 06:51:33,492 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 37 [2021-04-16 06:51:33,496 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.2 percent of original size [2021-04-16 06:51:33,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-04-16 06:51:33,597 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size [2021-04-16 06:51:33,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-04-16 06:51:33,697 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:51:33,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:51:33,723 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:51:33,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:51:33,749 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:51:33,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:51:33,778 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:51:33,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:51:33,809 INFO L142 QuantifierPusher]: treesize reduction 133, result has 72.9 percent of original size [2021-04-16 06:51:33,811 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 347 [2021-04-16 06:51:33,957 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2021-04-16 06:51:33,960 INFO L142 QuantifierPusher]: treesize reduction 150, result has 59.0 percent of original size [2021-04-16 06:51:33,960 INFO L147 QuantifierPusher]: treesize reduction 10, result has 95.4 percent of original size 206 [2021-04-16 06:51:34,018 INFO L142 QuantifierPusher]: treesize reduction 132, result has 57.7 percent of original size [2021-04-16 06:51:34,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-04-16 06:51:34,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:34,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:34,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:34,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:34,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200620644] [2021-04-16 06:51:34,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:34,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:51:34,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687361007] [2021-04-16 06:51:34,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:51:34,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:51:34,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:51:34,052 INFO L87 Difference]: Start difference. First operand 4068 states and 4777 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:38,424 INFO L93 Difference]: Finished difference Result 6292 states and 7390 transitions. [2021-04-16 06:51:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:51:38,426 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:51:38,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:38,430 INFO L225 Difference]: With dead ends: 6292 [2021-04-16 06:51:38,431 INFO L226 Difference]: Without dead ends: 4564 [2021-04-16 06:51:38,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1075.1ms TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:51:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-04-16 06:51:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4056. [2021-04-16 06:51:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 4051 states have (on average 1.1745248086892126) internal successors, (4758), 4051 states have internal predecessors, (4758), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 4762 transitions. [2021-04-16 06:51:41,429 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 4762 transitions. Word has length 102 [2021-04-16 06:51:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:41,429 INFO L480 AbstractCegarLoop]: Abstraction has 4056 states and 4762 transitions. [2021-04-16 06:51:41,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:41,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 4762 transitions. [2021-04-16 06:51:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:51:41,432 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:41,432 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:41,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-04-16 06:51:41,432 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash 96234764, now seen corresponding path program 32 times [2021-04-16 06:51:41,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:41,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906404900] [2021-04-16 06:51:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:41,440 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:41,441 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:41,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:41,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:51:41,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:51:41,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:51:41,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:51:41,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:41,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:41,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:41,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:41,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:41,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:41,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:41,622 INFO L142 QuantifierPusher]: treesize reduction 119, result has 68.8 percent of original size [2021-04-16 06:51:41,623 INFO L147 QuantifierPusher]: treesize reduction 20, result has 92.4 percent of original size 243 [2021-04-16 06:51:41,711 INFO L142 QuantifierPusher]: treesize reduction 132, result has 68.9 percent of original size [2021-04-16 06:51:41,712 INFO L147 QuantifierPusher]: treesize reduction 27, result has 90.8 percent of original size 266 [2021-04-16 06:51:41,797 INFO L142 QuantifierPusher]: treesize reduction 132, result has 69.2 percent of original size [2021-04-16 06:51:41,798 INFO L147 QuantifierPusher]: treesize reduction 27, result has 90.9 percent of original size 269 [2021-04-16 06:51:41,877 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:51:41,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-04-16 06:51:41,904 INFO L142 QuantifierPusher]: treesize reduction 131, result has 68.9 percent of original size [2021-04-16 06:51:41,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-04-16 06:51:42,010 INFO L142 QuantifierPusher]: treesize reduction 67, result has 68.7 percent of original size [2021-04-16 06:51:42,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-04-16 06:51:42,044 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.9 percent of original size [2021-04-16 06:51:42,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-04-16 06:51:42,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:42,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:42,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:42,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:42,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:42,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906404900] [2021-04-16 06:51:42,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:42,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:51:42,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400278684] [2021-04-16 06:51:42,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:51:42,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:42,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:51:42,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:51:42,077 INFO L87 Difference]: Start difference. First operand 4056 states and 4762 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:46,251 INFO L93 Difference]: Finished difference Result 4580 states and 5427 transitions. [2021-04-16 06:51:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:51:46,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:51:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:46,257 INFO L225 Difference]: With dead ends: 4580 [2021-04-16 06:51:46,257 INFO L226 Difference]: Without dead ends: 4175 [2021-04-16 06:51:46,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 938.5ms TimeCoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:51:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2021-04-16 06:51:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4056. [2021-04-16 06:51:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 4051 states have (on average 1.1745248086892126) internal successors, (4758), 4051 states have internal predecessors, (4758), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 4762 transitions. [2021-04-16 06:51:49,591 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 4762 transitions. Word has length 102 [2021-04-16 06:51:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:51:49,592 INFO L480 AbstractCegarLoop]: Abstraction has 4056 states and 4762 transitions. [2021-04-16 06:51:49,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 4762 transitions. [2021-04-16 06:51:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:51:49,594 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:51:49,594 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:51:49,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-04-16 06:51:49,594 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:51:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:51:49,595 INFO L82 PathProgramCache]: Analyzing trace with hash -296792246, now seen corresponding path program 33 times [2021-04-16 06:51:49,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:51:49,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54253638] [2021-04-16 06:51:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:51:49,599 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:51:49,600 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:51:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:49,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:49,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:51:49,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:51:49,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:49,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:51:49,735 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-04-16 06:51:49,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-04-16 06:51:49,759 INFO L142 QuantifierPusher]: treesize reduction 16, result has 65.2 percent of original size [2021-04-16 06:51:49,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 06:51:49,760 INFO L142 QuantifierPusher]: treesize reduction 22, result has 87.8 percent of original size [2021-04-16 06:51:49,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-04-16 06:51:49,833 INFO L142 QuantifierPusher]: treesize reduction 61, result has 82.4 percent of original size [2021-04-16 06:51:49,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-04-16 06:51:49,887 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.4 percent of original size [2021-04-16 06:51:49,888 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.5 percent of original size 357 [2021-04-16 06:51:49,904 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:49,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:49,963 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:49,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:50,028 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:50,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:50,093 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:50,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:50,159 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.5 percent of original size [2021-04-16 06:51:50,161 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.6 percent of original size 361 [2021-04-16 06:51:50,238 INFO L142 QuantifierPusher]: treesize reduction 48, result has 88.3 percent of original size [2021-04-16 06:51:50,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 361 [2021-04-16 06:51:50,315 INFO L142 QuantifierPusher]: treesize reduction 155, result has 77.8 percent of original size [2021-04-16 06:51:50,317 INFO L147 QuantifierPusher]: treesize reduction 22, result has 95.9 percent of original size 521 [2021-04-16 06:51:50,470 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 47 [2021-04-16 06:51:50,475 INFO L142 QuantifierPusher]: treesize reduction 182, result has 75.9 percent of original size [2021-04-16 06:51:50,479 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.3 percent of original size 563 [2021-04-16 06:51:50,614 INFO L142 QuantifierPusher]: treesize reduction 173, result has 77.2 percent of original size [2021-04-16 06:51:50,616 INFO L147 QuantifierPusher]: treesize reduction 19, result has 96.8 percent of original size 566 [2021-04-16 06:51:50,742 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:51:50,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:51:50,815 INFO L142 QuantifierPusher]: treesize reduction 19, result has 69.8 percent of original size [2021-04-16 06:51:50,816 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-04-16 06:51:50,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-04-16 06:51:50,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:51:50,870 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 06:51:50,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-04-16 06:51:50,920 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:51:50,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:51:50,950 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:51:50,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:51:51,019 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:51,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:51,092 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:51,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:51,170 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:51,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:51,250 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:51,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:51,330 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:51,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:51,411 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:51,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:51,533 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:51:51,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:51:51,621 INFO L142 QuantifierPusher]: treesize reduction 172, result has 78.4 percent of original size [2021-04-16 06:51:51,623 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 615 [2021-04-16 06:51:51,806 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2021-04-16 06:51:51,811 INFO L142 QuantifierPusher]: treesize reduction 189, result has 71.9 percent of original size [2021-04-16 06:51:51,813 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.9 percent of original size 474 [2021-04-16 06:51:51,938 INFO L142 QuantifierPusher]: treesize reduction 185, result has 68.0 percent of original size [2021-04-16 06:51:51,940 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.5 percent of original size 384 [2021-04-16 06:51:51,944 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:51:51,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:51:51,946 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:51:51,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:51,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:51,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:51,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:51:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:51:51,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:51:51,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:51:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:51:51,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54253638] [2021-04-16 06:51:51,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:51:51,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-04-16 06:51:51,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978294198] [2021-04-16 06:51:51,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-04-16 06:51:51,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:51:51,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-04-16 06:51:51,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:51:51,990 INFO L87 Difference]: Start difference. First operand 4056 states and 4762 transitions. Second operand has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 30 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:51:59,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:51:59,527 INFO L93 Difference]: Finished difference Result 6220 states and 7479 transitions. [2021-04-16 06:51:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-04-16 06:51:59,528 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 30 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:51:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:51:59,534 INFO L225 Difference]: With dead ends: 6220 [2021-04-16 06:51:59,534 INFO L226 Difference]: Without dead ends: 5754 [2021-04-16 06:51:59,535 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 3582.8ms TimeCoverageRelationStatistics Valid=479, Invalid=3553, Unknown=0, NotChecked=0, Total=4032 [2021-04-16 06:51:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2021-04-16 06:52:02,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 4134. [2021-04-16 06:52:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 4129 states have (on average 1.1746185517074352) internal successors, (4850), 4129 states have internal predecessors, (4850), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 4854 transitions. [2021-04-16 06:52:02,639 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 4854 transitions. Word has length 102 [2021-04-16 06:52:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:02,639 INFO L480 AbstractCegarLoop]: Abstraction has 4134 states and 4854 transitions. [2021-04-16 06:52:02,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 30 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:02,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 4854 transitions. [2021-04-16 06:52:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:52:02,643 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:02,643 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:02,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-04-16 06:52:02,643 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:02,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1904666614, now seen corresponding path program 34 times [2021-04-16 06:52:02,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:02,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698562074] [2021-04-16 06:52:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:02,648 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:02,649 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:02,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:02,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:02,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:02,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:52:02,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:02,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:52:02,775 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-16 06:52:02,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:02,795 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-04-16 06:52:02,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:52:02,797 INFO L142 QuantifierPusher]: treesize reduction 20, result has 83.1 percent of original size [2021-04-16 06:52:02,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-04-16 06:52:02,835 INFO L142 QuantifierPusher]: treesize reduction 59, result has 79.3 percent of original size [2021-04-16 06:52:02,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-04-16 06:52:02,878 INFO L142 QuantifierPusher]: treesize reduction 46, result has 86.6 percent of original size [2021-04-16 06:52:02,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-04-16 06:52:02,893 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:52:02,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:52:02,950 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:52:02,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:52:03,007 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:52:03,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:52:03,078 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:52:03,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:52:03,140 INFO L142 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size [2021-04-16 06:52:03,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:52:03,205 INFO L142 QuantifierPusher]: treesize reduction 39, result has 90.1 percent of original size [2021-04-16 06:52:03,206 INFO L147 QuantifierPusher]: treesize reduction 9, result has 97.5 percent of original size 345 [2021-04-16 06:52:03,289 INFO L142 QuantifierPusher]: treesize reduction 126, result has 78.3 percent of original size [2021-04-16 06:52:03,291 INFO L147 QuantifierPusher]: treesize reduction 22, result has 95.2 percent of original size 433 [2021-04-16 06:52:03,411 INFO L142 QuantifierPusher]: treesize reduction 183, result has 77.0 percent of original size [2021-04-16 06:52:03,413 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 603 [2021-04-16 06:52:03,553 INFO L142 QuantifierPusher]: treesize reduction 175, result has 79.7 percent of original size [2021-04-16 06:52:03,556 INFO L147 QuantifierPusher]: treesize reduction 19, result has 97.2 percent of original size 668 [2021-04-16 06:52:03,697 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:52:03,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-04-16 06:52:03,775 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.8 percent of original size [2021-04-16 06:52:03,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-04-16 06:52:03,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:52:03,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:52:03,819 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.2 percent of original size [2021-04-16 06:52:03,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-04-16 06:52:03,874 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.8 percent of original size [2021-04-16 06:52:03,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-04-16 06:52:03,905 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.4 percent of original size [2021-04-16 06:52:03,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:52:03,970 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:52:03,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:52:04,046 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:52:04,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:52:04,124 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:52:04,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:52:04,208 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:52:04,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:52:04,303 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:52:04,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:52:04,398 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:52:04,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:52:04,482 INFO L142 QuantifierPusher]: treesize reduction 162, result has 79.5 percent of original size [2021-04-16 06:52:04,485 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.8 percent of original size 610 [2021-04-16 06:52:04,657 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 39 [2021-04-16 06:52:04,661 INFO L142 QuantifierPusher]: treesize reduction 172, result has 74.4 percent of original size [2021-04-16 06:52:04,663 INFO L147 QuantifierPusher]: treesize reduction 27, result has 94.6 percent of original size 473 [2021-04-16 06:52:04,783 INFO L142 QuantifierPusher]: treesize reduction 164, result has 73.5 percent of original size [2021-04-16 06:52:04,785 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.5 percent of original size 448 [2021-04-16 06:52:04,789 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:52:04,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:52:04,791 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:52:04,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:04,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:04,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:04,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:04,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:04,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698562074] [2021-04-16 06:52:04,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:04,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-04-16 06:52:04,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222677587] [2021-04-16 06:52:04,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-04-16 06:52:04,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:04,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-04-16 06:52:04,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:52:04,825 INFO L87 Difference]: Start difference. First operand 4134 states and 4854 transitions. Second operand has 30 states, 30 states have (on average 2.533333333333333) internal successors, (76), 29 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:11,834 INFO L93 Difference]: Finished difference Result 6198 states and 7438 transitions. [2021-04-16 06:52:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-04-16 06:52:11,836 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.533333333333333) internal successors, (76), 29 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:52:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:11,841 INFO L225 Difference]: With dead ends: 6198 [2021-04-16 06:52:11,841 INFO L226 Difference]: Without dead ends: 5199 [2021-04-16 06:52:11,843 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 3038.9ms TimeCoverageRelationStatistics Valid=467, Invalid=3193, Unknown=0, NotChecked=0, Total=3660 [2021-04-16 06:52:11,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2021-04-16 06:52:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 4090. [2021-04-16 06:52:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4085 states have (on average 1.1711138310893512) internal successors, (4784), 4085 states have internal predecessors, (4784), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 4788 transitions. [2021-04-16 06:52:15,185 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 4788 transitions. Word has length 102 [2021-04-16 06:52:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:15,185 INFO L480 AbstractCegarLoop]: Abstraction has 4090 states and 4788 transitions. [2021-04-16 06:52:15,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.533333333333333) internal successors, (76), 29 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 4788 transitions. [2021-04-16 06:52:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:52:15,188 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:15,188 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:15,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-04-16 06:52:15,189 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:15,189 INFO L82 PathProgramCache]: Analyzing trace with hash -181998386, now seen corresponding path program 35 times [2021-04-16 06:52:15,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:15,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292756346] [2021-04-16 06:52:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:15,202 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:15,204 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:15,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:15,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:15,377 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,386 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,388 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,389 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,389 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,390 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,391 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,392 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,393 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,394 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:52:15,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:52:15,395 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-04-16 06:52:15,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:52:15,402 INFO L142 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size [2021-04-16 06:52:15,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:52:15,409 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 06:52:15,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:15,420 INFO L142 QuantifierPusher]: treesize reduction 41, result has 90.8 percent of original size [2021-04-16 06:52:15,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-04-16 06:52:15,538 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 37 [2021-04-16 06:52:15,541 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.2 percent of original size [2021-04-16 06:52:15,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-04-16 06:52:15,665 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2021-04-16 06:52:15,668 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size [2021-04-16 06:52:15,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-04-16 06:52:15,766 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:52:15,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:52:15,796 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:52:15,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:52:15,826 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:52:15,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:52:15,858 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:52:15,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:52:15,891 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 06:52:15,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:52:15,927 INFO L142 QuantifierPusher]: treesize reduction 111, result has 73.9 percent of original size [2021-04-16 06:52:15,928 INFO L147 QuantifierPusher]: treesize reduction 22, result has 93.0 percent of original size 293 [2021-04-16 06:52:16,065 INFO L142 QuantifierPusher]: treesize reduction 135, result has 57.3 percent of original size [2021-04-16 06:52:16,066 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.5 percent of original size 171 [2021-04-16 06:52:16,125 INFO L142 QuantifierPusher]: treesize reduction 117, result has 55.3 percent of original size [2021-04-16 06:52:16,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-04-16 06:52:16,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:16,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:16,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:16,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:16,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292756346] [2021-04-16 06:52:16,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:16,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:52:16,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982803005] [2021-04-16 06:52:16,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:52:16,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:16,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:52:16,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:52:16,165 INFO L87 Difference]: Start difference. First operand 4090 states and 4788 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:20,748 INFO L93 Difference]: Finished difference Result 5789 states and 6789 transitions. [2021-04-16 06:52:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:52:20,749 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:52:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:20,754 INFO L225 Difference]: With dead ends: 5789 [2021-04-16 06:52:20,754 INFO L226 Difference]: Without dead ends: 4413 [2021-04-16 06:52:20,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1254.3ms TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:52:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2021-04-16 06:52:23,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 3973. [2021-04-16 06:52:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3973 states, 3968 states have (on average 1.1736391129032258) internal successors, (4657), 3968 states have internal predecessors, (4657), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 4661 transitions. [2021-04-16 06:52:23,853 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 4661 transitions. Word has length 102 [2021-04-16 06:52:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:23,854 INFO L480 AbstractCegarLoop]: Abstraction has 3973 states and 4661 transitions. [2021-04-16 06:52:23,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 4661 transitions. [2021-04-16 06:52:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:52:23,856 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:23,856 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:23,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-04-16 06:52:23,856 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:23,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:23,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1003439112, now seen corresponding path program 36 times [2021-04-16 06:52:23,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:23,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369978908] [2021-04-16 06:52:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:23,863 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:23,864 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:23,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:23,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:23,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 06:52:23,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:52:23,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:52:23,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:23,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:24,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:24,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:24,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:24,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:24,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:24,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:24,105 INFO L142 QuantifierPusher]: treesize reduction 129, result has 66.2 percent of original size [2021-04-16 06:52:24,106 INFO L147 QuantifierPusher]: treesize reduction 10, result has 96.0 percent of original size 243 [2021-04-16 06:52:24,218 INFO L142 QuantifierPusher]: treesize reduction 141, result has 66.8 percent of original size [2021-04-16 06:52:24,220 INFO L147 QuantifierPusher]: treesize reduction 20, result has 93.0 percent of original size 264 [2021-04-16 06:52:24,333 INFO L142 QuantifierPusher]: treesize reduction 141, result has 67.1 percent of original size [2021-04-16 06:52:24,334 INFO L147 QuantifierPusher]: treesize reduction 20, result has 93.0 percent of original size 267 [2021-04-16 06:52:24,441 INFO L142 QuantifierPusher]: treesize reduction 109, result has 74.0 percent of original size [2021-04-16 06:52:24,443 INFO L147 QuantifierPusher]: treesize reduction 20, result has 93.5 percent of original size 290 [2021-04-16 06:52:24,579 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2021-04-16 06:52:24,582 INFO L142 QuantifierPusher]: treesize reduction 69, result has 67.8 percent of original size [2021-04-16 06:52:24,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-04-16 06:52:24,624 INFO L142 QuantifierPusher]: treesize reduction 69, result has 67.0 percent of original size [2021-04-16 06:52:24,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:24,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:24,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:24,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:24,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:24,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369978908] [2021-04-16 06:52:24,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:24,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:52:24,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747250579] [2021-04-16 06:52:24,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:52:24,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:24,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:52:24,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:52:24,668 INFO L87 Difference]: Start difference. First operand 3973 states and 4661 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:29,301 INFO L93 Difference]: Finished difference Result 4435 states and 5250 transitions. [2021-04-16 06:52:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:52:29,302 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:52:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:29,306 INFO L225 Difference]: With dead ends: 4435 [2021-04-16 06:52:29,306 INFO L226 Difference]: Without dead ends: 4030 [2021-04-16 06:52:29,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1133.2ms TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2021-04-16 06:52:29,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2021-04-16 06:52:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 3973. [2021-04-16 06:52:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3973 states, 3968 states have (on average 1.1736391129032258) internal successors, (4657), 3968 states have internal predecessors, (4657), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 4661 transitions. [2021-04-16 06:52:32,529 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 4661 transitions. Word has length 102 [2021-04-16 06:52:32,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:32,529 INFO L480 AbstractCegarLoop]: Abstraction has 3973 states and 4661 transitions. [2021-04-16 06:52:32,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:32,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 4661 transitions. [2021-04-16 06:52:32,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:52:32,532 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:32,532 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:32,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-04-16 06:52:32,533 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:32,533 INFO L82 PathProgramCache]: Analyzing trace with hash 610412102, now seen corresponding path program 37 times [2021-04-16 06:52:32,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:32,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427899355] [2021-04-16 06:52:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:32,539 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:32,540 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:32,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:32,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:32,658 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,672 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,673 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,674 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,675 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,675 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,676 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,677 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,677 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,678 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:32,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:32,679 INFO L142 QuantifierPusher]: treesize reduction 8, result has 85.5 percent of original size [2021-04-16 06:52:32,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:52:32,682 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 06:52:32,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:32,690 INFO L142 QuantifierPusher]: treesize reduction 14, result has 92.1 percent of original size [2021-04-16 06:52:32,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-04-16 06:52:32,741 INFO L142 QuantifierPusher]: treesize reduction 94, result has 68.1 percent of original size [2021-04-16 06:52:32,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-04-16 06:52:32,792 INFO L142 QuantifierPusher]: treesize reduction 41, result has 87.7 percent of original size [2021-04-16 06:52:32,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-04-16 06:52:32,811 INFO L142 QuantifierPusher]: treesize reduction 74, result has 90.0 percent of original size [2021-04-16 06:52:32,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 668 [2021-04-16 06:52:32,981 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 40 [2021-04-16 06:52:32,985 INFO L142 QuantifierPusher]: treesize reduction 96, result has 87.8 percent of original size [2021-04-16 06:52:32,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 693 [2021-04-16 06:52:33,103 INFO L142 QuantifierPusher]: treesize reduction 96, result has 87.9 percent of original size [2021-04-16 06:52:33,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 696 [2021-04-16 06:52:33,223 INFO L142 QuantifierPusher]: treesize reduction 36, result has 90.4 percent of original size [2021-04-16 06:52:33,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:52:33,286 INFO L142 QuantifierPusher]: treesize reduction 11, result has 65.6 percent of original size [2021-04-16 06:52:33,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:33,303 INFO L142 QuantifierPusher]: treesize reduction 19, result has 91.7 percent of original size [2021-04-16 06:52:33,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-04-16 06:52:33,322 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.0 percent of original size [2021-04-16 06:52:33,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:52:33,341 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.1 percent of original size [2021-04-16 06:52:33,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:52:33,403 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:33,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:33,477 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:33,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:33,555 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:33,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:33,628 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:33,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:33,701 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:33,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:33,780 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:33,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:33,862 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:33,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:33,947 INFO L142 QuantifierPusher]: treesize reduction 176, result has 78.1 percent of original size [2021-04-16 06:52:33,949 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 618 [2021-04-16 06:52:34,133 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 41 [2021-04-16 06:52:34,139 INFO L142 QuantifierPusher]: treesize reduction 185, result has 72.8 percent of original size [2021-04-16 06:52:34,142 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.0 percent of original size 475 [2021-04-16 06:52:34,282 INFO L142 QuantifierPusher]: treesize reduction 181, result has 69.1 percent of original size [2021-04-16 06:52:34,285 INFO L147 QuantifierPusher]: treesize reduction 20, result has 95.1 percent of original size 385 [2021-04-16 06:52:34,292 INFO L142 QuantifierPusher]: treesize reduction 41, result has 82.1 percent of original size [2021-04-16 06:52:34,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-04-16 06:52:34,296 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:52:34,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:52:34,300 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:52:34,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:34,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:34,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:34,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:34,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:34,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:34,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427899355] [2021-04-16 06:52:34,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:34,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:52:34,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925830080] [2021-04-16 06:52:34,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:52:34,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:34,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:52:34,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:52:34,348 INFO L87 Difference]: Start difference. First operand 3973 states and 4661 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:41,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:41,558 INFO L93 Difference]: Finished difference Result 7112 states and 8546 transitions. [2021-04-16 06:52:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-16 06:52:41,560 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:52:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:41,566 INFO L225 Difference]: With dead ends: 7112 [2021-04-16 06:52:41,567 INFO L226 Difference]: Without dead ends: 6643 [2021-04-16 06:52:41,568 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2150.2ms TimeCoverageRelationStatistics Valid=238, Invalid=1244, Unknown=0, NotChecked=0, Total=1482 [2021-04-16 06:52:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6643 states. [2021-04-16 06:52:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 4571. [2021-04-16 06:52:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 4566 states have (on average 1.184844502847131) internal successors, (5410), 4566 states have internal predecessors, (5410), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 5414 transitions. [2021-04-16 06:52:45,317 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 5414 transitions. Word has length 102 [2021-04-16 06:52:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:45,317 INFO L480 AbstractCegarLoop]: Abstraction has 4571 states and 5414 transitions. [2021-04-16 06:52:45,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 5414 transitions. [2021-04-16 06:52:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:52:45,320 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:45,320 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:45,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-04-16 06:52:45,321 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:45,321 INFO L82 PathProgramCache]: Analyzing trace with hash 416633098, now seen corresponding path program 38 times [2021-04-16 06:52:45,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:45,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162043662] [2021-04-16 06:52:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:45,327 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:45,328 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:45,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:45,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:45,467 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,476 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,477 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,478 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,479 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,479 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,480 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,481 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,482 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,483 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-04-16 06:52:45,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 06:52:45,484 INFO L142 QuantifierPusher]: treesize reduction 8, result has 85.5 percent of original size [2021-04-16 06:52:45,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-16 06:52:45,488 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 06:52:45,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:52:45,498 INFO L142 QuantifierPusher]: treesize reduction 14, result has 92.1 percent of original size [2021-04-16 06:52:45,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-04-16 06:52:45,549 INFO L142 QuantifierPusher]: treesize reduction 94, result has 68.1 percent of original size [2021-04-16 06:52:45,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-04-16 06:52:45,600 INFO L142 QuantifierPusher]: treesize reduction 41, result has 87.7 percent of original size [2021-04-16 06:52:45,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-04-16 06:52:45,616 INFO L142 QuantifierPusher]: treesize reduction 74, result has 90.0 percent of original size [2021-04-16 06:52:45,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 668 [2021-04-16 06:52:45,787 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 40 [2021-04-16 06:52:45,791 INFO L142 QuantifierPusher]: treesize reduction 96, result has 87.8 percent of original size [2021-04-16 06:52:45,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 693 [2021-04-16 06:52:45,911 INFO L142 QuantifierPusher]: treesize reduction 96, result has 87.9 percent of original size [2021-04-16 06:52:45,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 696 [2021-04-16 06:52:46,026 INFO L142 QuantifierPusher]: treesize reduction 36, result has 90.4 percent of original size [2021-04-16 06:52:46,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:52:46,082 INFO L142 QuantifierPusher]: treesize reduction 11, result has 65.6 percent of original size [2021-04-16 06:52:46,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:52:46,098 INFO L142 QuantifierPusher]: treesize reduction 19, result has 91.7 percent of original size [2021-04-16 06:52:46,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-04-16 06:52:46,115 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.0 percent of original size [2021-04-16 06:52:46,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:52:46,134 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.1 percent of original size [2021-04-16 06:52:46,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:52:46,194 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:46,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:46,262 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:46,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:46,334 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:46,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:46,407 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:46,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:46,483 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:46,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:46,564 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:46,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:46,643 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:46,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:46,726 INFO L142 QuantifierPusher]: treesize reduction 46, result has 88.2 percent of original size [2021-04-16 06:52:46,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:52:46,814 INFO L142 QuantifierPusher]: treesize reduction 154, result has 79.1 percent of original size [2021-04-16 06:52:46,817 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.6 percent of original size 564 [2021-04-16 06:52:46,977 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 46 [2021-04-16 06:52:46,980 INFO L142 QuantifierPusher]: treesize reduction 110, result has 79.0 percent of original size [2021-04-16 06:52:46,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 415 [2021-04-16 06:52:47,064 INFO L142 QuantifierPusher]: treesize reduction 110, result has 78.9 percent of original size [2021-04-16 06:52:47,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 411 [2021-04-16 06:52:47,071 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:52:47,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:52:47,073 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:52:47,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:47,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:47,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:47,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:47,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:47,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:47,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162043662] [2021-04-16 06:52:47,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:47,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:52:47,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276794328] [2021-04-16 06:52:47,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:52:47,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:47,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:52:47,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:52:47,113 INFO L87 Difference]: Start difference. First operand 4571 states and 5414 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:54,674 INFO L93 Difference]: Finished difference Result 7055 states and 8465 transitions. [2021-04-16 06:52:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:52:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:52:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:54,683 INFO L225 Difference]: With dead ends: 7055 [2021-04-16 06:52:54,683 INFO L226 Difference]: Without dead ends: 6589 [2021-04-16 06:52:54,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2152.3ms TimeCoverageRelationStatistics Valid=253, Invalid=1387, Unknown=0, NotChecked=0, Total=1640 [2021-04-16 06:52:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2021-04-16 06:52:59,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 4854. [2021-04-16 06:52:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4854 states, 4849 states have (on average 1.1810682614972159) internal successors, (5727), 4849 states have internal predecessors, (5727), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4854 states to 4854 states and 5731 transitions. [2021-04-16 06:52:59,177 INFO L78 Accepts]: Start accepts. Automaton has 4854 states and 5731 transitions. Word has length 102 [2021-04-16 06:52:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:59,178 INFO L480 AbstractCegarLoop]: Abstraction has 4854 states and 5731 transitions. [2021-04-16 06:52:59,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4854 states and 5731 transitions. [2021-04-16 06:52:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:52:59,181 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:59,181 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:59,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-04-16 06:52:59,181 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:59,181 INFO L82 PathProgramCache]: Analyzing trace with hash 725205962, now seen corresponding path program 39 times [2021-04-16 06:52:59,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:59,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384680068] [2021-04-16 06:52:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:59,189 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:59,191 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:59,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:59,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:59,340 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.6 percent of original size [2021-04-16 06:52:59,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 214 [2021-04-16 06:52:59,389 INFO L142 QuantifierPusher]: treesize reduction 35, result has 90.7 percent of original size [2021-04-16 06:52:59,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:52:59,397 INFO L142 QuantifierPusher]: treesize reduction 74, result has 79.3 percent of original size [2021-04-16 06:52:59,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 284 [2021-04-16 06:52:59,464 INFO L142 QuantifierPusher]: treesize reduction 95, result has 74.5 percent of original size [2021-04-16 06:52:59,465 INFO L147 QuantifierPusher]: treesize reduction 9, result has 96.8 percent of original size 268 [2021-04-16 06:52:59,500 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,501 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,524 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,524 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,525 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,525 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,526 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,526 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,527 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,527 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,528 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,528 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,529 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,529 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,530 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,530 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,531 INFO L142 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-04-16 06:52:59,531 INFO L147 QuantifierPusher]: treesize reduction 5, result has 90.0 percent of original size 45 [2021-04-16 06:52:59,540 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-04-16 06:52:59,541 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-04-16 06:52:59,542 INFO L142 QuantifierPusher]: treesize reduction 32, result has 83.8 percent of original size [2021-04-16 06:52:59,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-04-16 06:52:59,549 INFO L142 QuantifierPusher]: treesize reduction 291, result has 57.9 percent of original size [2021-04-16 06:52:59,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-04-16 06:52:59,623 INFO L142 QuantifierPusher]: treesize reduction 134, result has 83.5 percent of original size [2021-04-16 06:52:59,625 INFO L147 QuantifierPusher]: treesize reduction 5, result has 99.3 percent of original size 671 [2021-04-16 06:52:59,727 INFO L142 QuantifierPusher]: treesize reduction 139, result has 82.9 percent of original size [2021-04-16 06:52:59,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 674 [2021-04-16 06:52:59,840 INFO L142 QuantifierPusher]: treesize reduction 54, result has 86.5 percent of original size [2021-04-16 06:52:59,841 INFO L147 QuantifierPusher]: treesize reduction 5, result has 98.6 percent of original size 342 [2021-04-16 06:52:59,902 INFO L142 QuantifierPusher]: treesize reduction 35, result has 41.7 percent of original size [2021-04-16 06:52:59,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:52:59,917 INFO L142 QuantifierPusher]: treesize reduction 37, result has 85.6 percent of original size [2021-04-16 06:52:59,918 INFO L147 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size 215 [2021-04-16 06:52:59,933 INFO L142 QuantifierPusher]: treesize reduction 64, result has 84.4 percent of original size [2021-04-16 06:52:59,934 INFO L147 QuantifierPusher]: treesize reduction 5, result has 98.6 percent of original size 342 [2021-04-16 06:52:59,949 INFO L142 QuantifierPusher]: treesize reduction 64, result has 84.5 percent of original size [2021-04-16 06:52:59,950 INFO L147 QuantifierPusher]: treesize reduction 5, result has 98.6 percent of original size 345 [2021-04-16 06:52:59,965 INFO L142 QuantifierPusher]: treesize reduction 98, result has 88.9 percent of original size [2021-04-16 06:52:59,967 INFO L147 QuantifierPusher]: treesize reduction 5, result has 99.4 percent of original size 779 [2021-04-16 06:53:00,139 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 46 [2021-04-16 06:53:00,143 INFO L142 QuantifierPusher]: treesize reduction 117, result has 84.6 percent of original size [2021-04-16 06:53:00,145 INFO L147 QuantifierPusher]: treesize reduction 5, result has 99.2 percent of original size 640 [2021-04-16 06:53:00,274 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 26 [2021-04-16 06:53:00,279 INFO L142 QuantifierPusher]: treesize reduction 117, result has 84.6 percent of original size [2021-04-16 06:53:00,282 INFO L147 QuantifierPusher]: treesize reduction 5, result has 99.2 percent of original size 636 [2021-04-16 06:53:00,289 INFO L142 QuantifierPusher]: treesize reduction 58, result has 76.8 percent of original size [2021-04-16 06:53:00,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-04-16 06:53:00,293 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:53:00,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:53:00,296 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:53:00,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:00,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:00,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:00,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:00,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:00,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384680068] [2021-04-16 06:53:00,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:00,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:53:00,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756670124] [2021-04-16 06:53:00,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:53:00,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:00,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:53:00,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:53:00,328 INFO L87 Difference]: Start difference. First operand 4854 states and 5731 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:13,276 INFO L93 Difference]: Finished difference Result 15197 states and 17976 transitions. [2021-04-16 06:53:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:53:13,278 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:53:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:13,293 INFO L225 Difference]: With dead ends: 15197 [2021-04-16 06:53:13,294 INFO L226 Difference]: Without dead ends: 13741 [2021-04-16 06:53:13,297 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1078.4ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:53:13,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13741 states. [2021-04-16 06:53:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13741 to 7623. [2021-04-16 06:53:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7623 states, 7618 states have (on average 1.1731425571016014) internal successors, (8937), 7618 states have internal predecessors, (8937), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7623 states to 7623 states and 8941 transitions. [2021-04-16 06:53:20,274 INFO L78 Accepts]: Start accepts. Automaton has 7623 states and 8941 transitions. Word has length 102 [2021-04-16 06:53:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:20,275 INFO L480 AbstractCegarLoop]: Abstraction has 7623 states and 8941 transitions. [2021-04-16 06:53:20,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7623 states and 8941 transitions. [2021-04-16 06:53:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:53:20,278 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:20,278 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:20,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-04-16 06:53:20,279 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:20,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2074590086, now seen corresponding path program 40 times [2021-04-16 06:53:20,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:20,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964896167] [2021-04-16 06:53:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:20,284 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:20,285 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:20,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:20,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:20,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:20,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:53:20,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:20,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:20,449 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.2 percent of original size [2021-04-16 06:53:20,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-04-16 06:53:20,496 INFO L142 QuantifierPusher]: treesize reduction 31, result has 88.4 percent of original size [2021-04-16 06:53:20,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-04-16 06:53:20,510 INFO L142 QuantifierPusher]: treesize reduction 41, result has 93.0 percent of original size [2021-04-16 06:53:20,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 542 [2021-04-16 06:53:20,700 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 37 [2021-04-16 06:53:20,704 INFO L142 QuantifierPusher]: treesize reduction 67, result has 91.4 percent of original size [2021-04-16 06:53:20,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 715 [2021-04-16 06:53:20,833 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 37 [2021-04-16 06:53:20,837 INFO L142 QuantifierPusher]: treesize reduction 68, result has 92.0 percent of original size [2021-04-16 06:53:20,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 780 [2021-04-16 06:53:20,963 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-04-16 06:53:20,965 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.8 percent of original size [2021-04-16 06:53:20,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-04-16 06:53:21,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:53:21,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:53:21,037 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.4 percent of original size [2021-04-16 06:53:21,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-04-16 06:53:21,057 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.4 percent of original size [2021-04-16 06:53:21,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-04-16 06:53:21,076 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:53:21,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-04-16 06:53:21,146 INFO L142 QuantifierPusher]: treesize reduction 54, result has 93.3 percent of original size [2021-04-16 06:53:21,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 746 [2021-04-16 06:53:21,388 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 55 [2021-04-16 06:53:21,392 INFO L142 QuantifierPusher]: treesize reduction 73, result has 89.3 percent of original size [2021-04-16 06:53:21,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 611 [2021-04-16 06:53:21,505 INFO L142 QuantifierPusher]: treesize reduction 69, result has 88.3 percent of original size [2021-04-16 06:53:21,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 522 [2021-04-16 06:53:21,510 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:53:21,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:53:21,512 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:53:21,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:21,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:21,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:21,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:21,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:21,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964896167] [2021-04-16 06:53:21,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:21,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:53:21,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551835317] [2021-04-16 06:53:21,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:53:21,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:21,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:53:21,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:53:21,539 INFO L87 Difference]: Start difference. First operand 7623 states and 8941 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:30,247 INFO L93 Difference]: Finished difference Result 9958 states and 11810 transitions. [2021-04-16 06:53:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:53:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:53:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:30,258 INFO L225 Difference]: With dead ends: 9958 [2021-04-16 06:53:30,258 INFO L226 Difference]: Without dead ends: 8491 [2021-04-16 06:53:30,261 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1155.2ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:53:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8491 states. [2021-04-16 06:53:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8491 to 6953. [2021-04-16 06:53:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6953 states, 6948 states have (on average 1.169833045480714) internal successors, (8128), 6948 states have internal predecessors, (8128), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6953 states to 6953 states and 8132 transitions. [2021-04-16 06:53:36,215 INFO L78 Accepts]: Start accepts. Automaton has 6953 states and 8132 transitions. Word has length 102 [2021-04-16 06:53:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:36,215 INFO L480 AbstractCegarLoop]: Abstraction has 6953 states and 8132 transitions. [2021-04-16 06:53:36,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6953 states and 8132 transitions. [2021-04-16 06:53:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:53:36,219 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:36,219 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:36,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-04-16 06:53:36,220 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:36,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1497426230, now seen corresponding path program 41 times [2021-04-16 06:53:36,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:36,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295312322] [2021-04-16 06:53:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:36,234 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:36,235 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:36,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:36,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:36,348 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,356 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,357 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,358 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,359 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,360 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,360 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,361 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,362 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,363 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,364 INFO L142 QuantifierPusher]: treesize reduction 6, result has 87.5 percent of original size [2021-04-16 06:53:36,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:53:36,368 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:36,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:36,370 INFO L142 QuantifierPusher]: treesize reduction 178, result has 55.5 percent of original size [2021-04-16 06:53:36,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:53:36,425 INFO L142 QuantifierPusher]: treesize reduction 79, result has 83.5 percent of original size [2021-04-16 06:53:36,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 400 [2021-04-16 06:53:36,508 INFO L142 QuantifierPusher]: treesize reduction 79, result has 83.6 percent of original size [2021-04-16 06:53:36,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 403 [2021-04-16 06:53:36,580 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:53:36,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:53:36,610 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:53:36,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-16 06:53:36,643 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.4 percent of original size [2021-04-16 06:53:36,645 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 351 [2021-04-16 06:53:36,785 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 51 [2021-04-16 06:53:36,788 INFO L142 QuantifierPusher]: treesize reduction 140, result has 62.0 percent of original size [2021-04-16 06:53:36,790 INFO L147 QuantifierPusher]: treesize reduction 20, result has 91.2 percent of original size 208 [2021-04-16 06:53:36,853 INFO L142 QuantifierPusher]: treesize reduction 132, result has 58.0 percent of original size [2021-04-16 06:53:36,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-04-16 06:53:36,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:36,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:36,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:36,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:36,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295312322] [2021-04-16 06:53:36,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:36,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:53:36,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869364543] [2021-04-16 06:53:36,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:53:36,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:36,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:53:36,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:53:36,895 INFO L87 Difference]: Start difference. First operand 6953 states and 8132 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:44,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:44,160 INFO L93 Difference]: Finished difference Result 10152 states and 11992 transitions. [2021-04-16 06:53:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:53:44,161 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:53:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:44,171 INFO L225 Difference]: With dead ends: 10152 [2021-04-16 06:53:44,171 INFO L226 Difference]: Without dead ends: 7906 [2021-04-16 06:53:44,174 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 732.8ms TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:53:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7906 states. [2021-04-16 06:53:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7906 to 6920. [2021-04-16 06:53:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6920 states, 6915 states have (on average 1.1720896601590745) internal successors, (8105), 6915 states have internal predecessors, (8105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6920 states to 6920 states and 8109 transitions. [2021-04-16 06:53:50,046 INFO L78 Accepts]: Start accepts. Automaton has 6920 states and 8109 transitions. Word has length 102 [2021-04-16 06:53:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:53:50,046 INFO L480 AbstractCegarLoop]: Abstraction has 6920 states and 8109 transitions. [2021-04-16 06:53:50,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 6920 states and 8109 transitions. [2021-04-16 06:53:50,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:53:50,049 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:53:50,049 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:53:50,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-04-16 06:53:50,049 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:53:50,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:53:50,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1194463042, now seen corresponding path program 42 times [2021-04-16 06:53:50,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:53:50,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286636868] [2021-04-16 06:53:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:53:50,059 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:53:50,060 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:53:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:50,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:50,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:50,136 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,143 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,144 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,145 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,145 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,146 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,147 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,148 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,149 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,149 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:53:50,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:53:50,150 INFO L142 QuantifierPusher]: treesize reduction 6, result has 87.5 percent of original size [2021-04-16 06:53:50,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:53:50,154 INFO L142 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size [2021-04-16 06:53:50,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:53:50,161 INFO L142 QuantifierPusher]: treesize reduction 178, result has 55.1 percent of original size [2021-04-16 06:53:50,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-04-16 06:53:50,211 INFO L142 QuantifierPusher]: treesize reduction 79, result has 83.4 percent of original size [2021-04-16 06:53:50,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 396 [2021-04-16 06:53:50,279 INFO L142 QuantifierPusher]: treesize reduction 79, result has 83.5 percent of original size [2021-04-16 06:53:50,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-04-16 06:53:50,344 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:53:50,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:53:50,371 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:53:50,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:53:50,399 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:53:50,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:53:50,439 INFO L142 QuantifierPusher]: treesize reduction 131, result has 73.2 percent of original size [2021-04-16 06:53:50,441 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 347 [2021-04-16 06:53:50,591 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2021-04-16 06:53:50,594 INFO L142 QuantifierPusher]: treesize reduction 131, result has 64.0 percent of original size [2021-04-16 06:53:50,595 INFO L147 QuantifierPusher]: treesize reduction 27, result has 88.4 percent of original size 206 [2021-04-16 06:53:50,660 INFO L142 QuantifierPusher]: treesize reduction 123, result has 60.3 percent of original size [2021-04-16 06:53:50,661 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.3 percent of original size 180 [2021-04-16 06:53:50,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:50,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:53:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:53:50,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:53:50,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:53:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:53:50,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286636868] [2021-04-16 06:53:50,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:53:50,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:53:50,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359483474] [2021-04-16 06:53:50,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:53:50,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:53:50,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:53:50,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:53:50,702 INFO L87 Difference]: Start difference. First operand 6920 states and 8109 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:53:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:53:58,161 INFO L93 Difference]: Finished difference Result 10306 states and 12134 transitions. [2021-04-16 06:53:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:53:58,162 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:53:58,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:53:58,171 INFO L225 Difference]: With dead ends: 10306 [2021-04-16 06:53:58,171 INFO L226 Difference]: Without dead ends: 7904 [2021-04-16 06:53:58,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 862.6ms TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:53:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2021-04-16 06:54:04,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 6755. [2021-04-16 06:54:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6755 states, 6750 states have (on average 1.1711111111111112) internal successors, (7905), 6750 states have internal predecessors, (7905), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6755 states to 6755 states and 7909 transitions. [2021-04-16 06:54:04,058 INFO L78 Accepts]: Start accepts. Automaton has 6755 states and 7909 transitions. Word has length 102 [2021-04-16 06:54:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:54:04,058 INFO L480 AbstractCegarLoop]: Abstraction has 6755 states and 7909 transitions. [2021-04-16 06:54:04,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6755 states and 7909 transitions. [2021-04-16 06:54:04,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:54:04,063 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:54:04,063 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:54:04,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-04-16 06:54:04,063 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:54:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:54:04,064 INFO L82 PathProgramCache]: Analyzing trace with hash 481857158, now seen corresponding path program 43 times [2021-04-16 06:54:04,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:54:04,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404868918] [2021-04-16 06:54:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:54:04,070 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:54:04,071 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:54:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:04,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:04,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:04,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:04,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:04,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:04,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:54:04,214 INFO L142 QuantifierPusher]: treesize reduction 84, result has 62.2 percent of original size [2021-04-16 06:54:04,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-04-16 06:54:04,250 INFO L142 QuantifierPusher]: treesize reduction 31, result has 88.1 percent of original size [2021-04-16 06:54:04,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 230 [2021-04-16 06:54:04,263 INFO L142 QuantifierPusher]: treesize reduction 31, result has 88.3 percent of original size [2021-04-16 06:54:04,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-04-16 06:54:04,306 INFO L142 QuantifierPusher]: treesize reduction 31, result has 88.3 percent of original size [2021-04-16 06:54:04,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-04-16 06:54:04,357 INFO L142 QuantifierPusher]: treesize reduction 31, result has 88.3 percent of original size [2021-04-16 06:54:04,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-04-16 06:54:04,408 INFO L142 QuantifierPusher]: treesize reduction 31, result has 88.3 percent of original size [2021-04-16 06:54:04,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-04-16 06:54:04,461 INFO L142 QuantifierPusher]: treesize reduction 169, result has 70.2 percent of original size [2021-04-16 06:54:04,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 398 [2021-04-16 06:54:04,591 INFO L142 QuantifierPusher]: treesize reduction 178, result has 76.7 percent of original size [2021-04-16 06:54:04,594 INFO L147 QuantifierPusher]: treesize reduction 17, result has 97.1 percent of original size 569 [2021-04-16 06:54:04,724 INFO L142 QuantifierPusher]: treesize reduction 179, result has 78.4 percent of original size [2021-04-16 06:54:04,727 INFO L147 QuantifierPusher]: treesize reduction 17, result has 97.4 percent of original size 634 [2021-04-16 06:54:04,847 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.7 percent of original size [2021-04-16 06:54:04,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-04-16 06:54:04,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:54:04,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:54:04,927 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.2 percent of original size [2021-04-16 06:54:04,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-04-16 06:54:04,949 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.8 percent of original size [2021-04-16 06:54:04,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-04-16 06:54:04,975 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:54:04,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:54:05,058 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:54:05,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:54:05,143 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:54:05,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:54:05,223 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:54:05,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:54:05,309 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 06:54:05,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:54:05,389 INFO L142 QuantifierPusher]: treesize reduction 182, result has 77.0 percent of original size [2021-04-16 06:54:05,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 610 [2021-04-16 06:54:05,591 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 39 [2021-04-16 06:54:05,596 INFO L142 QuantifierPusher]: treesize reduction 184, result has 72.6 percent of original size [2021-04-16 06:54:05,598 INFO L147 QuantifierPusher]: treesize reduction 17, result has 96.5 percent of original size 471 [2021-04-16 06:54:05,728 INFO L142 QuantifierPusher]: treesize reduction 180, result has 68.9 percent of original size [2021-04-16 06:54:05,730 INFO L147 QuantifierPusher]: treesize reduction 17, result has 95.7 percent of original size 382 [2021-04-16 06:54:05,742 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:54:05,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:54:05,746 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:54:05,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:05,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:05,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:05,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:54:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:05,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:05,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:54:05,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404868918] [2021-04-16 06:54:05,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:54:05,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:54:05,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428138576] [2021-04-16 06:54:05,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:54:05,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:54:05,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:54:05,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:54:05,781 INFO L87 Difference]: Start difference. First operand 6755 states and 7909 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:15,739 INFO L93 Difference]: Finished difference Result 10566 states and 12565 transitions. [2021-04-16 06:54:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-16 06:54:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:54:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:15,753 INFO L225 Difference]: With dead ends: 10566 [2021-04-16 06:54:15,754 INFO L226 Difference]: Without dead ends: 9319 [2021-04-16 06:54:15,757 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1484.6ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:54:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9319 states. [2021-04-16 06:54:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9319 to 7807. [2021-04-16 06:54:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7807 states, 7802 states have (on average 1.1717508331197128) internal successors, (9142), 7802 states have internal predecessors, (9142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7807 states to 7807 states and 9146 transitions. [2021-04-16 06:54:22,975 INFO L78 Accepts]: Start accepts. Automaton has 7807 states and 9146 transitions. Word has length 102 [2021-04-16 06:54:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:54:22,976 INFO L480 AbstractCegarLoop]: Abstraction has 7807 states and 9146 transitions. [2021-04-16 06:54:22,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7807 states and 9146 transitions. [2021-04-16 06:54:22,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:54:22,980 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:54:22,980 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:54:22,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-04-16 06:54:22,980 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:54:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:54:22,981 INFO L82 PathProgramCache]: Analyzing trace with hash 964602314, now seen corresponding path program 44 times [2021-04-16 06:54:22,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:54:22,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313564002] [2021-04-16 06:54:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:54:22,999 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:54:23,000 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:54:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:23,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:23,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:23,144 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,155 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,156 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,157 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,159 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,160 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,161 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,162 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,163 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,164 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,165 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size [2021-04-16 06:54:23,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:54:23,170 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:54:23,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,172 INFO L142 QuantifierPusher]: treesize reduction 12, result has 93.2 percent of original size [2021-04-16 06:54:23,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-04-16 06:54:23,231 INFO L142 QuantifierPusher]: treesize reduction 264, result has 60.3 percent of original size [2021-04-16 06:54:23,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-04-16 06:54:23,347 INFO L142 QuantifierPusher]: treesize reduction 112, result has 85.7 percent of original size [2021-04-16 06:54:23,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 671 [2021-04-16 06:54:23,472 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 33 [2021-04-16 06:54:23,477 INFO L142 QuantifierPusher]: treesize reduction 112, result has 85.8 percent of original size [2021-04-16 06:54:23,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 674 [2021-04-16 06:54:23,591 INFO L142 QuantifierPusher]: treesize reduction 34, result has 91.0 percent of original size [2021-04-16 06:54:23,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 342 [2021-04-16 06:54:23,670 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-04-16 06:54:23,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:54:23,692 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.7 percent of original size [2021-04-16 06:54:23,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-04-16 06:54:23,713 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.6 percent of original size [2021-04-16 06:54:23,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 342 [2021-04-16 06:54:23,744 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:54:23,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:54:23,769 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:54:23,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:54:23,858 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:54:23,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:54:23,963 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:54:23,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:54:24,060 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:54:24,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:54:24,155 INFO L142 QuantifierPusher]: treesize reduction 184, result has 77.2 percent of original size [2021-04-16 06:54:24,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 622 [2021-04-16 06:54:24,338 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 43 [2021-04-16 06:54:24,343 INFO L142 QuantifierPusher]: treesize reduction 186, result has 72.7 percent of original size [2021-04-16 06:54:24,346 INFO L147 QuantifierPusher]: treesize reduction 17, result has 96.6 percent of original size 479 [2021-04-16 06:54:24,458 INFO L142 QuantifierPusher]: treesize reduction 182, result has 69.0 percent of original size [2021-04-16 06:54:24,460 INFO L147 QuantifierPusher]: treesize reduction 17, result has 95.8 percent of original size 389 [2021-04-16 06:54:24,465 INFO L142 QuantifierPusher]: treesize reduction 39, result has 83.1 percent of original size [2021-04-16 06:54:24,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-04-16 06:54:24,470 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:54:24,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:54:24,527 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:54:24,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:24,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:24,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:54:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:24,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:24,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:54:24,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313564002] [2021-04-16 06:54:24,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:54:24,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:54:24,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753891851] [2021-04-16 06:54:24,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:54:24,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:54:24,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:54:24,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:54:24,564 INFO L87 Difference]: Start difference. First operand 7807 states and 9146 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:34,751 INFO L93 Difference]: Finished difference Result 10914 states and 12898 transitions. [2021-04-16 06:54:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:54:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:54:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:34,762 INFO L225 Difference]: With dead ends: 10914 [2021-04-16 06:54:34,763 INFO L226 Difference]: Without dead ends: 9465 [2021-04-16 06:54:34,765 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1629.4ms TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:54:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9465 states. [2021-04-16 06:54:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9465 to 7298. [2021-04-16 06:54:41,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7298 states, 7293 states have (on average 1.1712601124365831) internal successors, (8542), 7293 states have internal predecessors, (8542), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7298 states to 7298 states and 8546 transitions. [2021-04-16 06:54:41,706 INFO L78 Accepts]: Start accepts. Automaton has 7298 states and 8546 transitions. Word has length 102 [2021-04-16 06:54:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:54:41,706 INFO L480 AbstractCegarLoop]: Abstraction has 7298 states and 8546 transitions. [2021-04-16 06:54:41,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 7298 states and 8546 transitions. [2021-04-16 06:54:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:54:41,710 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:54:41,710 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:54:41,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-04-16 06:54:41,710 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:54:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:54:41,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2035715906, now seen corresponding path program 45 times [2021-04-16 06:54:41,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:54:41,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326063754] [2021-04-16 06:54:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:54:41,715 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:54:41,716 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:54:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:41,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:41,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:41,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:41,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:54:41,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:41,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:54:41,917 INFO L142 QuantifierPusher]: treesize reduction 84, result has 62.2 percent of original size [2021-04-16 06:54:41,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-04-16 06:54:41,950 INFO L142 QuantifierPusher]: treesize reduction 31, result has 88.1 percent of original size [2021-04-16 06:54:41,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 230 [2021-04-16 06:54:41,961 INFO L142 QuantifierPusher]: treesize reduction 33, result has 89.4 percent of original size [2021-04-16 06:54:41,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 278 [2021-04-16 06:54:42,010 INFO L142 QuantifierPusher]: treesize reduction 33, result has 89.4 percent of original size [2021-04-16 06:54:42,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 278 [2021-04-16 06:54:42,062 INFO L142 QuantifierPusher]: treesize reduction 33, result has 89.4 percent of original size [2021-04-16 06:54:42,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 278 [2021-04-16 06:54:42,120 INFO L142 QuantifierPusher]: treesize reduction 33, result has 89.4 percent of original size [2021-04-16 06:54:42,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 278 [2021-04-16 06:54:42,186 INFO L142 QuantifierPusher]: treesize reduction 33, result has 89.4 percent of original size [2021-04-16 06:54:42,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 278 [2021-04-16 06:54:42,251 INFO L142 QuantifierPusher]: treesize reduction 123, result has 78.2 percent of original size [2021-04-16 06:54:42,253 INFO L147 QuantifierPusher]: treesize reduction 20, result has 95.5 percent of original size 420 [2021-04-16 06:54:42,379 INFO L142 QuantifierPusher]: treesize reduction 185, result has 75.8 percent of original size [2021-04-16 06:54:42,382 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.3 percent of original size 569 [2021-04-16 06:54:42,526 INFO L142 QuantifierPusher]: treesize reduction 186, result has 77.6 percent of original size [2021-04-16 06:54:42,528 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 634 [2021-04-16 06:54:42,653 INFO L142 QuantifierPusher]: treesize reduction 34, result has 90.7 percent of original size [2021-04-16 06:54:42,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-04-16 06:54:42,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-04-16 06:54:42,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:54:42,731 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.2 percent of original size [2021-04-16 06:54:42,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-04-16 06:54:42,753 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.8 percent of original size [2021-04-16 06:54:42,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-04-16 06:54:42,778 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.4 percent of original size [2021-04-16 06:54:42,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:54:42,848 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:54:42,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:54:42,922 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:54:42,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:54:43,000 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:54:43,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:54:43,081 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:54:43,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:54:43,165 INFO L142 QuantifierPusher]: treesize reduction 42, result has 89.0 percent of original size [2021-04-16 06:54:43,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-04-16 06:54:43,250 INFO L142 QuantifierPusher]: treesize reduction 162, result has 79.5 percent of original size [2021-04-16 06:54:43,253 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.8 percent of original size 610 [2021-04-16 06:54:43,465 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 39 [2021-04-16 06:54:43,470 INFO L142 QuantifierPusher]: treesize reduction 191, result has 71.6 percent of original size [2021-04-16 06:54:43,472 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.9 percent of original size 471 [2021-04-16 06:54:43,608 INFO L142 QuantifierPusher]: treesize reduction 173, result has 72.1 percent of original size [2021-04-16 06:54:43,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 446 [2021-04-16 06:54:43,615 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:54:43,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:54:43,618 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:54:43,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:43,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:43,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:43,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:54:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:54:43,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:54:43,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:54:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:54:43,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326063754] [2021-04-16 06:54:43,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:54:43,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:54:43,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793143516] [2021-04-16 06:54:43,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:54:43,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:54:43,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:54:43,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:54:43,654 INFO L87 Difference]: Start difference. First operand 7298 states and 8546 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:54:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:54:53,638 INFO L93 Difference]: Finished difference Result 10500 states and 12527 transitions. [2021-04-16 06:54:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:54:53,639 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:54:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:54:53,649 INFO L225 Difference]: With dead ends: 10500 [2021-04-16 06:54:53,649 INFO L226 Difference]: Without dead ends: 9253 [2021-04-16 06:54:53,652 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1664.5ms TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:54:53,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9253 states. [2021-04-16 06:55:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9253 to 7777. [2021-04-16 06:55:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7777 states, 7772 states have (on average 1.1769171384457024) internal successors, (9147), 7772 states have internal predecessors, (9147), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 9151 transitions. [2021-04-16 06:55:00,693 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 9151 transitions. Word has length 102 [2021-04-16 06:55:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:55:00,693 INFO L480 AbstractCegarLoop]: Abstraction has 7777 states and 9151 transitions. [2021-04-16 06:55:00,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 9151 transitions. [2021-04-16 06:55:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:55:00,697 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:55:00,697 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:55:00,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-04-16 06:55:00,697 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:55:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:55:00,698 INFO L82 PathProgramCache]: Analyzing trace with hash 131292226, now seen corresponding path program 46 times [2021-04-16 06:55:00,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:55:00,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568892017] [2021-04-16 06:55:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:55:00,703 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:55:00,704 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:55:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:00,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:00,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:00,812 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,820 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,821 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,822 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,823 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,824 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,825 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,826 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,827 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,827 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-04-16 06:55:00,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:55:00,828 INFO L142 QuantifierPusher]: treesize reduction 6, result has 87.5 percent of original size [2021-04-16 06:55:00,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:55:00,832 INFO L142 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size [2021-04-16 06:55:00,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 06:55:00,841 INFO L142 QuantifierPusher]: treesize reduction 178, result has 55.1 percent of original size [2021-04-16 06:55:00,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-04-16 06:55:00,888 INFO L142 QuantifierPusher]: treesize reduction 79, result has 83.4 percent of original size [2021-04-16 06:55:00,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 396 [2021-04-16 06:55:00,978 INFO L142 QuantifierPusher]: treesize reduction 79, result has 83.5 percent of original size [2021-04-16 06:55:00,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-04-16 06:55:01,054 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:55:01,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:55:01,084 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:55:01,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:55:01,116 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:55:01,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:55:01,147 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:55:01,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:55:01,186 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-04-16 06:55:01,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 06:55:01,223 INFO L142 QuantifierPusher]: treesize reduction 121, result has 75.2 percent of original size [2021-04-16 06:55:01,224 INFO L147 QuantifierPusher]: treesize reduction 20, result has 94.6 percent of original size 347 [2021-04-16 06:55:01,382 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2021-04-16 06:55:01,385 INFO L142 QuantifierPusher]: treesize reduction 150, result has 58.8 percent of original size [2021-04-16 06:55:01,386 INFO L147 QuantifierPusher]: treesize reduction 10, result has 95.3 percent of original size 204 [2021-04-16 06:55:01,479 INFO L142 QuantifierPusher]: treesize reduction 132, result has 57.4 percent of original size [2021-04-16 06:55:01,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-04-16 06:55:01,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:01,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:55:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:01,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:01,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:55:01,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568892017] [2021-04-16 06:55:01,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:55:01,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:55:01,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706641414] [2021-04-16 06:55:01,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:55:01,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:55:01,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:55:01,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:55:01,534 INFO L87 Difference]: Start difference. First operand 7777 states and 9151 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:55:11,389 INFO L93 Difference]: Finished difference Result 12627 states and 14866 transitions. [2021-04-16 06:55:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:55:11,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:55:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:55:11,402 INFO L225 Difference]: With dead ends: 12627 [2021-04-16 06:55:11,402 INFO L226 Difference]: Without dead ends: 8470 [2021-04-16 06:55:11,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1218.5ms TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:55:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8470 states. [2021-04-16 06:55:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8470 to 7193. [2021-04-16 06:55:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7193 states, 7188 states have (on average 1.1755703951029493) internal successors, (8450), 7188 states have internal predecessors, (8450), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7193 states to 7193 states and 8454 transitions. [2021-04-16 06:55:18,760 INFO L78 Accepts]: Start accepts. Automaton has 7193 states and 8454 transitions. Word has length 102 [2021-04-16 06:55:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:55:18,760 INFO L480 AbstractCegarLoop]: Abstraction has 7193 states and 8454 transitions. [2021-04-16 06:55:18,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7193 states and 8454 transitions. [2021-04-16 06:55:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:55:18,767 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:55:18,767 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:55:18,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-04-16 06:55:18,767 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:55:18,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:55:18,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1814592714, now seen corresponding path program 47 times [2021-04-16 06:55:18,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:55:18,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954211534] [2021-04-16 06:55:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:55:18,776 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:55:18,778 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:55:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:18,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:18,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:18,921 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,936 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,938 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,940 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,941 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,943 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,944 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,946 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,947 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,948 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,950 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size [2021-04-16 06:55:18,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:55:18,957 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:18,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:18,960 INFO L142 QuantifierPusher]: treesize reduction 12, result has 93.2 percent of original size [2021-04-16 06:55:18,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-04-16 06:55:19,022 INFO L142 QuantifierPusher]: treesize reduction 264, result has 60.3 percent of original size [2021-04-16 06:55:19,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-04-16 06:55:19,127 INFO L142 QuantifierPusher]: treesize reduction 112, result has 85.7 percent of original size [2021-04-16 06:55:19,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 671 [2021-04-16 06:55:19,243 INFO L142 QuantifierPusher]: treesize reduction 112, result has 85.8 percent of original size [2021-04-16 06:55:19,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 674 [2021-04-16 06:55:19,346 INFO L142 QuantifierPusher]: treesize reduction 34, result has 91.0 percent of original size [2021-04-16 06:55:19,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 342 [2021-04-16 06:55:19,411 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-04-16 06:55:19,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:19,428 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.7 percent of original size [2021-04-16 06:55:19,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-04-16 06:55:19,444 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.6 percent of original size [2021-04-16 06:55:19,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 342 [2021-04-16 06:55:19,463 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:55:19,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:55:19,482 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:55:19,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:55:19,560 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:55:19,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:55:19,640 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:55:19,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:55:19,738 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:55:19,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:55:19,822 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:55:19,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:55:19,922 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.8 percent of original size [2021-04-16 06:55:19,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-04-16 06:55:20,028 INFO L142 QuantifierPusher]: treesize reduction 164, result has 79.7 percent of original size [2021-04-16 06:55:20,031 INFO L147 QuantifierPusher]: treesize reduction 20, result has 96.9 percent of original size 622 [2021-04-16 06:55:20,246 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 44 [2021-04-16 06:55:20,250 INFO L142 QuantifierPusher]: treesize reduction 174, result has 74.5 percent of original size [2021-04-16 06:55:20,252 INFO L147 QuantifierPusher]: treesize reduction 27, result has 94.7 percent of original size 481 [2021-04-16 06:55:20,397 INFO L142 QuantifierPusher]: treesize reduction 166, result has 73.6 percent of original size [2021-04-16 06:55:20,400 INFO L147 QuantifierPusher]: treesize reduction 7, result has 98.5 percent of original size 455 [2021-04-16 06:55:20,407 INFO L142 QuantifierPusher]: treesize reduction 39, result has 83.1 percent of original size [2021-04-16 06:55:20,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-04-16 06:55:20,414 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:55:20,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:55:20,417 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:55:20,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:20,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:20,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:55:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:20,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:20,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:55:20,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954211534] [2021-04-16 06:55:20,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:55:20,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:55:20,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765097858] [2021-04-16 06:55:20,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:55:20,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:55:20,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:55:20,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:55:20,463 INFO L87 Difference]: Start difference. First operand 7193 states and 8454 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:55:31,100 INFO L93 Difference]: Finished difference Result 9481 states and 11280 transitions. [2021-04-16 06:55:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:55:31,101 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:55:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:55:31,111 INFO L225 Difference]: With dead ends: 9481 [2021-04-16 06:55:31,111 INFO L226 Difference]: Without dead ends: 8634 [2021-04-16 06:55:31,114 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1837.6ms TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2021-04-16 06:55:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8634 states. [2021-04-16 06:55:37,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8634 to 7010. [2021-04-16 06:55:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7010 states, 7005 states have (on average 1.1784439685938615) internal successors, (8255), 7005 states have internal predecessors, (8255), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 8259 transitions. [2021-04-16 06:55:37,930 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 8259 transitions. Word has length 102 [2021-04-16 06:55:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:55:37,930 INFO L480 AbstractCegarLoop]: Abstraction has 7010 states and 8259 transitions. [2021-04-16 06:55:37,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 8259 transitions. [2021-04-16 06:55:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:55:37,935 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:55:37,935 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:55:37,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-04-16 06:55:37,935 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:55:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:55:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1687964094, now seen corresponding path program 48 times [2021-04-16 06:55:37,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:55:37,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342899611] [2021-04-16 06:55:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:55:37,941 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:55:37,942 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:55:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:38,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:38,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:38,123 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,134 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,135 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,136 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,137 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,138 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,139 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,140 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,141 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,141 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:38,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:38,142 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size [2021-04-16 06:55:38,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:55:38,146 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-04-16 06:55:38,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:55:38,157 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.3 percent of original size [2021-04-16 06:55:38,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:55:38,189 INFO L142 QuantifierPusher]: treesize reduction 22, result has 58.5 percent of original size [2021-04-16 06:55:38,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:55:38,191 INFO L142 QuantifierPusher]: treesize reduction 29, result has 84.6 percent of original size [2021-04-16 06:55:38,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-04-16 06:55:38,283 INFO L142 QuantifierPusher]: treesize reduction 239, result has 67.0 percent of original size [2021-04-16 06:55:38,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-04-16 06:55:38,382 INFO L142 QuantifierPusher]: treesize reduction 127, result has 85.2 percent of original size [2021-04-16 06:55:38,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 734 [2021-04-16 06:55:38,530 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 37 [2021-04-16 06:55:38,535 INFO L142 QuantifierPusher]: treesize reduction 127, result has 85.3 percent of original size [2021-04-16 06:55:38,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 737 [2021-04-16 06:55:38,644 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.2 percent of original size [2021-04-16 06:55:38,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-04-16 06:55:38,740 INFO L142 QuantifierPusher]: treesize reduction 28, result has 57.6 percent of original size [2021-04-16 06:55:38,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:55:38,776 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:55:38,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:55:38,797 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.5 percent of original size [2021-04-16 06:55:38,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-04-16 06:55:38,856 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:55:38,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:55:38,883 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.6 percent of original size [2021-04-16 06:55:38,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:55:38,971 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:55:38,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:55:39,077 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:55:39,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:55:39,170 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:55:39,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:55:39,257 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:55:39,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:55:39,344 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:55:39,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:55:39,450 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:55:39,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:55:39,546 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:55:39,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:55:39,646 INFO L142 QuantifierPusher]: treesize reduction 174, result has 78.3 percent of original size [2021-04-16 06:55:39,649 INFO L147 QuantifierPusher]: treesize reduction 10, result has 98.4 percent of original size 618 [2021-04-16 06:55:39,859 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 41 [2021-04-16 06:55:39,865 INFO L142 QuantifierPusher]: treesize reduction 191, result has 71.8 percent of original size [2021-04-16 06:55:39,868 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.9 percent of original size 477 [2021-04-16 06:55:40,002 INFO L142 QuantifierPusher]: treesize reduction 187, result has 68.0 percent of original size [2021-04-16 06:55:40,004 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.5 percent of original size 387 [2021-04-16 06:55:40,010 INFO L142 QuantifierPusher]: treesize reduction 39, result has 82.8 percent of original size [2021-04-16 06:55:40,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-04-16 06:55:40,014 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:55:40,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:55:40,016 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:55:40,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:40,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:40,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:55:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:40,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:40,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:55:40,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342899611] [2021-04-16 06:55:40,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:55:40,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:55:40,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458634464] [2021-04-16 06:55:40,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:55:40,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:55:40,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:55:40,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:55:40,058 INFO L87 Difference]: Start difference. First operand 7010 states and 8259 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:55:52,003 INFO L93 Difference]: Finished difference Result 10204 states and 12103 transitions. [2021-04-16 06:55:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:55:52,007 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:55:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:55:52,022 INFO L225 Difference]: With dead ends: 10204 [2021-04-16 06:55:52,022 INFO L226 Difference]: Without dead ends: 9735 [2021-04-16 06:55:52,026 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2905.3ms TimeCoverageRelationStatistics Valid=307, Invalid=1499, Unknown=0, NotChecked=0, Total=1806 [2021-04-16 06:55:52,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9735 states. [2021-04-16 06:55:59,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9735 to 7482. [2021-04-16 06:55:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7482 states, 7477 states have (on average 1.1749364718469975) internal successors, (8785), 7477 states have internal predecessors, (8785), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7482 states to 7482 states and 8789 transitions. [2021-04-16 06:55:59,340 INFO L78 Accepts]: Start accepts. Automaton has 7482 states and 8789 transitions. Word has length 102 [2021-04-16 06:55:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:55:59,340 INFO L480 AbstractCegarLoop]: Abstraction has 7482 states and 8789 transitions. [2021-04-16 06:55:59,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:55:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7482 states and 8789 transitions. [2021-04-16 06:55:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:55:59,344 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:55:59,344 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:55:59,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-04-16 06:55:59,344 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:55:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:55:59,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1881743098, now seen corresponding path program 49 times [2021-04-16 06:55:59,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:55:59,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496701384] [2021-04-16 06:55:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:55:59,361 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:55:59,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:55:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:55:59,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:55:59,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:55:59,492 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,502 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,504 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,505 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,506 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,507 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,508 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,509 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,510 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,511 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-16 06:55:59,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 06:55:59,511 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size [2021-04-16 06:55:59,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:55:59,515 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-04-16 06:55:59,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:55:59,525 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.3 percent of original size [2021-04-16 06:55:59,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:55:59,558 INFO L142 QuantifierPusher]: treesize reduction 22, result has 58.5 percent of original size [2021-04-16 06:55:59,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:55:59,560 INFO L142 QuantifierPusher]: treesize reduction 29, result has 84.6 percent of original size [2021-04-16 06:55:59,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-04-16 06:55:59,657 INFO L142 QuantifierPusher]: treesize reduction 239, result has 67.0 percent of original size [2021-04-16 06:55:59,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-04-16 06:55:59,770 INFO L142 QuantifierPusher]: treesize reduction 127, result has 85.2 percent of original size [2021-04-16 06:55:59,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 734 [2021-04-16 06:55:59,894 INFO L142 QuantifierPusher]: treesize reduction 127, result has 85.3 percent of original size [2021-04-16 06:55:59,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 737 [2021-04-16 06:56:00,020 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.2 percent of original size [2021-04-16 06:56:00,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-04-16 06:56:00,109 INFO L142 QuantifierPusher]: treesize reduction 28, result has 57.6 percent of original size [2021-04-16 06:56:00,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:56:00,141 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-16 06:56:00,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:56:00,161 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.5 percent of original size [2021-04-16 06:56:00,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-04-16 06:56:00,227 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.5 percent of original size [2021-04-16 06:56:00,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 338 [2021-04-16 06:56:00,252 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.6 percent of original size [2021-04-16 06:56:00,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:56:00,328 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:56:00,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:56:00,408 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:56:00,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:56:00,489 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:56:00,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:56:00,582 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:56:00,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:56:00,693 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:56:00,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:56:00,805 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:56:00,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:56:00,920 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:56:00,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:56:01,023 INFO L142 QuantifierPusher]: treesize reduction 44, result has 88.7 percent of original size [2021-04-16 06:56:01,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-04-16 06:56:01,151 INFO L142 QuantifierPusher]: treesize reduction 174, result has 76.4 percent of original size [2021-04-16 06:56:01,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 564 [2021-04-16 06:56:01,338 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 43 [2021-04-16 06:56:01,342 INFO L142 QuantifierPusher]: treesize reduction 108, result has 79.4 percent of original size [2021-04-16 06:56:01,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 417 [2021-04-16 06:56:01,455 INFO L142 QuantifierPusher]: treesize reduction 108, result has 79.3 percent of original size [2021-04-16 06:56:01,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 413 [2021-04-16 06:56:01,461 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 06:56:01,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 06:56:01,464 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:56:01,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:01,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:01,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:56:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:01,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:01,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:56:01,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496701384] [2021-04-16 06:56:01,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:56:01,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-04-16 06:56:01,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236980683] [2021-04-16 06:56:01,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-04-16 06:56:01,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:56:01,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-04-16 06:56:01,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:56:01,511 INFO L87 Difference]: Start difference. First operand 7482 states and 8789 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:56:13,296 INFO L93 Difference]: Finished difference Result 10219 states and 12118 transitions. [2021-04-16 06:56:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-16 06:56:13,298 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:56:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:56:13,311 INFO L225 Difference]: With dead ends: 10219 [2021-04-16 06:56:13,311 INFO L226 Difference]: Without dead ends: 9753 [2021-04-16 06:56:13,314 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 3012.0ms TimeCoverageRelationStatistics Valid=325, Invalid=1655, Unknown=0, NotChecked=0, Total=1980 [2021-04-16 06:56:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9753 states. [2021-04-16 06:56:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9753 to 7317. [2021-04-16 06:56:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7317 states, 7312 states have (on average 1.1777899343544858) internal successors, (8612), 7312 states have internal predecessors, (8612), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7317 states to 7317 states and 8616 transitions. [2021-04-16 06:56:20,559 INFO L78 Accepts]: Start accepts. Automaton has 7317 states and 8616 transitions. Word has length 102 [2021-04-16 06:56:20,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:56:20,560 INFO L480 AbstractCegarLoop]: Abstraction has 7317 states and 8616 transitions. [2021-04-16 06:56:20,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 7317 states and 8616 transitions. [2021-04-16 06:56:20,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:56:20,564 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:56:20,565 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 8, 8, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:56:20,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-04-16 06:56:20,565 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:56:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:56:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1573170234, now seen corresponding path program 50 times [2021-04-16 06:56:20,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:56:20,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629984241] [2021-04-16 06:56:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:56:20,572 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:56:20,573 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:56:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:20,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:20,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:20,722 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,731 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,732 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,733 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,734 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,735 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,736 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,737 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,738 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,738 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,739 INFO L142 QuantifierPusher]: treesize reduction 11, result has 79.2 percent of original size [2021-04-16 06:56:20,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 06:56:20,743 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-04-16 06:56:20,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 06:56:20,746 INFO L142 QuantifierPusher]: treesize reduction 51, result has 87.7 percent of original size [2021-04-16 06:56:20,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 362 [2021-04-16 06:56:20,812 INFO L142 QuantifierPusher]: treesize reduction 54, result has 89.0 percent of original size [2021-04-16 06:56:20,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 438 [2021-04-16 06:56:20,909 INFO L142 QuantifierPusher]: treesize reduction 54, result has 89.1 percent of original size [2021-04-16 06:56:20,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 441 [2021-04-16 06:56:20,995 INFO L142 QuantifierPusher]: treesize reduction 6, result has 93.5 percent of original size [2021-04-16 06:56:20,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:56:21,049 INFO L142 QuantifierPusher]: treesize reduction 46, result has 91.8 percent of original size [2021-04-16 06:56:21,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 512 [2021-04-16 06:56:21,314 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2021-04-16 06:56:21,317 INFO L142 QuantifierPusher]: treesize reduction 65, result has 85.2 percent of original size [2021-04-16 06:56:21,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-04-16 06:56:21,396 INFO L142 QuantifierPusher]: treesize reduction 65, result has 85.0 percent of original size [2021-04-16 06:56:21,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 367 [2021-04-16 06:56:21,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:21,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:56:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:21,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:21,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:56:21,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629984241] [2021-04-16 06:56:21,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:56:21,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:56:21,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286946952] [2021-04-16 06:56:21,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:56:21,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:56:21,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:56:21,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:56:21,435 INFO L87 Difference]: Start difference. First operand 7317 states and 8616 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:21,841 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-04-16 06:56:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:56:29,986 INFO L93 Difference]: Finished difference Result 12426 states and 14714 transitions. [2021-04-16 06:56:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:56:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:56:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:56:29,997 INFO L225 Difference]: With dead ends: 12426 [2021-04-16 06:56:29,997 INFO L226 Difference]: Without dead ends: 7674 [2021-04-16 06:56:30,004 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 985.7ms TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:56:30,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7674 states. [2021-04-16 06:56:37,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7674 to 7608. [2021-04-16 06:56:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7608 states, 7603 states have (on average 1.1690122320136789) internal successors, (8888), 7603 states have internal predecessors, (8888), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7608 states to 7608 states and 8892 transitions. [2021-04-16 06:56:37,674 INFO L78 Accepts]: Start accepts. Automaton has 7608 states and 8892 transitions. Word has length 102 [2021-04-16 06:56:37,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:56:37,674 INFO L480 AbstractCegarLoop]: Abstraction has 7608 states and 8892 transitions. [2021-04-16 06:56:37,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7608 states and 8892 transitions. [2021-04-16 06:56:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:56:37,678 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:56:37,678 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:56:37,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-04-16 06:56:37,678 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:56:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:56:37,678 INFO L82 PathProgramCache]: Analyzing trace with hash -313195450, now seen corresponding path program 51 times [2021-04-16 06:56:37,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:56:37,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950407696] [2021-04-16 06:56:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:56:37,684 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:56:37,685 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:56:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:37,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:37,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:37,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:37,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:56:37,788 INFO L142 QuantifierPusher]: treesize reduction 202, result has 31.8 percent of original size [2021-04-16 06:56:37,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:56:37,818 INFO L142 QuantifierPusher]: treesize reduction 60, result has 87.5 percent of original size [2021-04-16 06:56:37,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 420 [2021-04-16 06:56:37,911 INFO L142 QuantifierPusher]: treesize reduction 63, result has 88.5 percent of original size [2021-04-16 06:56:37,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-04-16 06:56:38,018 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.8 percent of original size [2021-04-16 06:56:38,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:56:38,076 INFO L142 QuantifierPusher]: treesize reduction 19, result has 95.2 percent of original size [2021-04-16 06:56:38,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 374 [2021-04-16 06:56:38,260 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2021-04-16 06:56:38,263 INFO L142 QuantifierPusher]: treesize reduction 39, result has 91.2 percent of original size [2021-04-16 06:56:38,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 403 [2021-04-16 06:56:38,360 INFO L142 QuantifierPusher]: treesize reduction 39, result has 91.2 percent of original size [2021-04-16 06:56:38,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-04-16 06:56:38,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:38,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:56:38,471 INFO L142 QuantifierPusher]: treesize reduction 152, result has 56.6 percent of original size [2021-04-16 06:56:38,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-04-16 06:56:38,543 INFO L142 QuantifierPusher]: treesize reduction 53, result has 87.7 percent of original size [2021-04-16 06:56:38,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 378 [2021-04-16 06:56:38,641 INFO L142 QuantifierPusher]: treesize reduction 53, result has 87.7 percent of original size [2021-04-16 06:56:38,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-04-16 06:56:38,740 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-04-16 06:56:38,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 06:56:38,784 INFO L142 QuantifierPusher]: treesize reduction 13, result has 97.4 percent of original size [2021-04-16 06:56:38,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 482 [2021-04-16 06:56:39,077 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-04-16 06:56:39,080 INFO L142 QuantifierPusher]: treesize reduction 32, result has 91.5 percent of original size [2021-04-16 06:56:39,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 343 [2021-04-16 06:56:39,170 INFO L142 QuantifierPusher]: treesize reduction 76, result has 76.6 percent of original size [2021-04-16 06:56:39,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:56:39,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:39,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:39,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:56:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:56:39,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:56:39,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:56:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:56:39,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950407696] [2021-04-16 06:56:39,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:56:39,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:56:39,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497716175] [2021-04-16 06:56:39,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:56:39,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:56:39,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:56:39,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:56:39,210 INFO L87 Difference]: Start difference. First operand 7608 states and 8892 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:56:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:56:52,175 INFO L93 Difference]: Finished difference Result 12917 states and 15205 transitions. [2021-04-16 06:56:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:56:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:56:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:56:52,192 INFO L225 Difference]: With dead ends: 12917 [2021-04-16 06:56:52,192 INFO L226 Difference]: Without dead ends: 11843 [2021-04-16 06:56:52,197 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2080.9ms TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2021-04-16 06:56:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2021-04-16 06:57:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 11380. [2021-04-16 06:57:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11380 states, 11375 states have (on average 1.1758241758241759) internal successors, (13375), 11375 states have internal predecessors, (13375), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11380 states to 11380 states and 13379 transitions. [2021-04-16 06:57:04,074 INFO L78 Accepts]: Start accepts. Automaton has 11380 states and 13379 transitions. Word has length 102 [2021-04-16 06:57:04,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:57:04,075 INFO L480 AbstractCegarLoop]: Abstraction has 11380 states and 13379 transitions. [2021-04-16 06:57:04,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 11380 states and 13379 transitions. [2021-04-16 06:57:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:57:04,080 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:57:04,080 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 8, 8, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:57:04,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-04-16 06:57:04,080 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:57:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:57:04,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1047935946, now seen corresponding path program 1 times [2021-04-16 06:57:04,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:57:04,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255993327] [2021-04-16 06:57:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:57:04,098 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:57:04,099 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:57:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:04,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:04,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:57:04,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:04,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 06:57:04,255 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-04-16 06:57:04,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 06:57:04,302 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-04-16 06:57:04,303 INFO L147 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size 20 [2021-04-16 06:57:04,314 INFO L142 QuantifierPusher]: treesize reduction 22, result has 87.0 percent of original size [2021-04-16 06:57:04,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-04-16 06:57:04,430 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2021-04-16 06:57:04,435 INFO L142 QuantifierPusher]: treesize reduction 210, result has 63.2 percent of original size [2021-04-16 06:57:04,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 360 [2021-04-16 06:57:04,562 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 21 [2021-04-16 06:57:04,567 INFO L142 QuantifierPusher]: treesize reduction 102, result has 88.1 percent of original size [2021-04-16 06:57:04,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 757 [2021-04-16 06:57:04,755 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 39 [2021-04-16 06:57:04,760 INFO L142 QuantifierPusher]: treesize reduction 103, result has 88.9 percent of original size [2021-04-16 06:57:04,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 822 [2021-04-16 06:57:04,959 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2021-04-16 06:57:04,962 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.1 percent of original size [2021-04-16 06:57:04,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:57:05,101 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 30 [2021-04-16 06:57:05,103 INFO L142 QuantifierPusher]: treesize reduction 19, result has 67.2 percent of original size [2021-04-16 06:57:05,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-16 06:57:05,143 INFO L142 QuantifierPusher]: treesize reduction 10, result has 67.7 percent of original size [2021-04-16 06:57:05,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:57:05,165 INFO L142 QuantifierPusher]: treesize reduction 17, result has 92.1 percent of original size [2021-04-16 06:57:05,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-04-16 06:57:05,244 INFO L142 QuantifierPusher]: treesize reduction 33, result has 90.9 percent of original size [2021-04-16 06:57:05,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 328 [2021-04-16 06:57:05,281 INFO L142 QuantifierPusher]: treesize reduction 48, result has 93.6 percent of original size [2021-04-16 06:57:05,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 701 [2021-04-16 06:57:05,431 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 28 [2021-04-16 06:57:05,436 INFO L142 QuantifierPusher]: treesize reduction 48, result has 92.8 percent of original size [2021-04-16 06:57:05,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 617 [2021-04-16 06:57:05,555 INFO L142 QuantifierPusher]: treesize reduction 44, result has 92.3 percent of original size [2021-04-16 06:57:05,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 528 [2021-04-16 06:57:05,565 INFO L142 QuantifierPusher]: treesize reduction 28, result has 86.5 percent of original size [2021-04-16 06:57:05,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-04-16 06:57:05,571 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:57:05,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:05,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:05,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:57:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:05,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:05,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:57:05,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255993327] [2021-04-16 06:57:05,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:57:05,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:57:05,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477891313] [2021-04-16 06:57:05,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:57:05,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:57:05,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:57:05,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:57:05,611 INFO L87 Difference]: Start difference. First operand 11380 states and 13379 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:57:19,119 INFO L93 Difference]: Finished difference Result 14543 states and 17154 transitions. [2021-04-16 06:57:19,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:57:19,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:57:19,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:57:19,134 INFO L225 Difference]: With dead ends: 14543 [2021-04-16 06:57:19,135 INFO L226 Difference]: Without dead ends: 12094 [2021-04-16 06:57:19,139 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1629.7ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-04-16 06:57:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12094 states. [2021-04-16 06:57:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12094 to 10953. [2021-04-16 06:57:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10953 states, 10948 states have (on average 1.167427840701498) internal successors, (12781), 10948 states have internal predecessors, (12781), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10953 states to 10953 states and 12785 transitions. [2021-04-16 06:57:30,382 INFO L78 Accepts]: Start accepts. Automaton has 10953 states and 12785 transitions. Word has length 102 [2021-04-16 06:57:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:57:30,382 INFO L480 AbstractCegarLoop]: Abstraction has 10953 states and 12785 transitions. [2021-04-16 06:57:30,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 10953 states and 12785 transitions. [2021-04-16 06:57:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:57:30,387 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:57:30,387 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:57:30,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-04-16 06:57:30,387 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:57:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:57:30,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1192547638, now seen corresponding path program 52 times [2021-04-16 06:57:30,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:57:30,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123482331] [2021-04-16 06:57:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:57:30,393 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:57:30,394 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:57:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:30,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:30,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:30,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:30,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:57:30,493 INFO L142 QuantifierPusher]: treesize reduction 202, result has 31.8 percent of original size [2021-04-16 06:57:30,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-04-16 06:57:30,517 INFO L142 QuantifierPusher]: treesize reduction 60, result has 87.5 percent of original size [2021-04-16 06:57:30,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 420 [2021-04-16 06:57:30,599 INFO L142 QuantifierPusher]: treesize reduction 61, result has 88.9 percent of original size [2021-04-16 06:57:30,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 490 [2021-04-16 06:57:30,686 INFO L142 QuantifierPusher]: treesize reduction 11, result has 97.2 percent of original size [2021-04-16 06:57:30,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 375 [2021-04-16 06:57:30,890 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-04-16 06:57:30,893 INFO L142 QuantifierPusher]: treesize reduction 33, result has 92.4 percent of original size [2021-04-16 06:57:30,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-04-16 06:57:31,019 INFO L142 QuantifierPusher]: treesize reduction 33, result has 92.4 percent of original size [2021-04-16 06:57:31,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 403 [2021-04-16 06:57:31,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:31,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:57:31,115 INFO L142 QuantifierPusher]: treesize reduction 152, result has 56.6 percent of original size [2021-04-16 06:57:31,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-04-16 06:57:31,177 INFO L142 QuantifierPusher]: treesize reduction 53, result has 87.7 percent of original size [2021-04-16 06:57:31,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 378 [2021-04-16 06:57:31,269 INFO L142 QuantifierPusher]: treesize reduction 53, result has 87.7 percent of original size [2021-04-16 06:57:31,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-04-16 06:57:31,394 INFO L142 QuantifierPusher]: treesize reduction 13, result has 97.4 percent of original size [2021-04-16 06:57:31,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 480 [2021-04-16 06:57:31,737 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2021-04-16 06:57:31,740 INFO L142 QuantifierPusher]: treesize reduction 32, result has 91.4 percent of original size [2021-04-16 06:57:31,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-04-16 06:57:31,816 INFO L142 QuantifierPusher]: treesize reduction 76, result has 76.5 percent of original size [2021-04-16 06:57:31,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-04-16 06:57:31,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:31,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:57:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:57:31,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:57:31,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:57:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:57:31,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123482331] [2021-04-16 06:57:31,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:57:31,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:57:31,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797835375] [2021-04-16 06:57:31,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:57:31,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:57:31,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:57:31,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:57:31,857 INFO L87 Difference]: Start difference. First operand 10953 states and 12785 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:57:33,967 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2021-04-16 06:57:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:57:50,777 INFO L93 Difference]: Finished difference Result 18705 states and 22059 transitions. [2021-04-16 06:57:50,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:57:50,780 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:57:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:57:50,800 INFO L225 Difference]: With dead ends: 18705 [2021-04-16 06:57:50,801 INFO L226 Difference]: Without dead ends: 16547 [2021-04-16 06:57:50,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2054.1ms TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:57:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16547 states. [2021-04-16 06:58:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16547 to 16516. [2021-04-16 06:58:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16516 states, 16511 states have (on average 1.1740052086487796) internal successors, (19384), 16511 states have internal predecessors, (19384), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16516 states to 16516 states and 19388 transitions. [2021-04-16 06:58:09,373 INFO L78 Accepts]: Start accepts. Automaton has 16516 states and 19388 transitions. Word has length 102 [2021-04-16 06:58:09,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:58:09,373 INFO L480 AbstractCegarLoop]: Abstraction has 16516 states and 19388 transitions. [2021-04-16 06:58:09,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:09,373 INFO L276 IsEmpty]: Start isEmpty. Operand 16516 states and 19388 transitions. [2021-04-16 06:58:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:58:09,378 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:58:09,378 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 8, 8, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:58:09,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-04-16 06:58:09,378 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:58:09,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:58:09,378 INFO L82 PathProgramCache]: Analyzing trace with hash 168583758, now seen corresponding path program 53 times [2021-04-16 06:58:09,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:58:09,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804077381] [2021-04-16 06:58:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:58:09,383 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:58:09,384 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:58:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:09,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:09,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:09,470 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,480 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,481 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,483 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,484 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,485 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,486 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,487 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,488 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,489 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:09,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:09,490 INFO L142 QuantifierPusher]: treesize reduction 13, result has 77.2 percent of original size [2021-04-16 06:58:09,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:58:09,495 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-04-16 06:58:09,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:58:09,505 INFO L142 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size [2021-04-16 06:58:09,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:58:09,519 INFO L142 QuantifierPusher]: treesize reduction 220, result has 52.3 percent of original size [2021-04-16 06:58:09,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 241 [2021-04-16 06:58:09,641 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 23 [2021-04-16 06:58:09,645 INFO L142 QuantifierPusher]: treesize reduction 121, result has 76.2 percent of original size [2021-04-16 06:58:09,648 INFO L147 QuantifierPusher]: treesize reduction 73, result has 81.1 percent of original size 314 [2021-04-16 06:58:09,783 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 43 [2021-04-16 06:58:09,787 INFO L142 QuantifierPusher]: treesize reduction 121, result has 76.3 percent of original size [2021-04-16 06:58:09,789 INFO L147 QuantifierPusher]: treesize reduction 73, result has 81.3 percent of original size 317 [2021-04-16 06:58:09,901 INFO L142 QuantifierPusher]: treesize reduction 49, result has 91.2 percent of original size [2021-04-16 06:58:09,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 507 [2021-04-16 06:58:10,085 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2021-04-16 06:58:10,088 INFO L142 QuantifierPusher]: treesize reduction 68, result has 84.4 percent of original size [2021-04-16 06:58:10,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 368 [2021-04-16 06:58:10,181 INFO L142 QuantifierPusher]: treesize reduction 68, result has 84.2 percent of original size [2021-04-16 06:58:10,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 362 [2021-04-16 06:58:10,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:10,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:58:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:10,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:10,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:58:10,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804077381] [2021-04-16 06:58:10,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:58:10,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:58:10,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146287624] [2021-04-16 06:58:10,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:58:10,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:58:10,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:58:10,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:58:10,218 INFO L87 Difference]: Start difference. First operand 16516 states and 19388 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:28,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:58:28,727 INFO L93 Difference]: Finished difference Result 23291 states and 27405 transitions. [2021-04-16 06:58:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:58:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:58:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:58:28,761 INFO L225 Difference]: With dead ends: 23291 [2021-04-16 06:58:28,761 INFO L226 Difference]: Without dead ends: 16656 [2021-04-16 06:58:28,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1048.8ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:58:28,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16656 states. [2021-04-16 06:58:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16656 to 16483. [2021-04-16 06:58:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16483 states, 16478 states have (on average 1.170591091151839) internal successors, (19289), 16478 states have internal predecessors, (19289), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16483 states to 16483 states and 19293 transitions. [2021-04-16 06:58:46,267 INFO L78 Accepts]: Start accepts. Automaton has 16483 states and 19293 transitions. Word has length 102 [2021-04-16 06:58:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:58:46,267 INFO L480 AbstractCegarLoop]: Abstraction has 16483 states and 19293 transitions. [2021-04-16 06:58:46,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:58:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16483 states and 19293 transitions. [2021-04-16 06:58:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:58:46,273 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:58:46,273 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:58:46,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-04-16 06:58:46,273 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:58:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:58:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1428558542, now seen corresponding path program 54 times [2021-04-16 06:58:46,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:58:46,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673645074] [2021-04-16 06:58:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:58:46,280 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:58:46,281 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:58:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:46,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:46,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:46,372 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,381 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,382 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,384 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,385 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,386 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,387 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,388 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,390 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,391 INFO L142 QuantifierPusher]: treesize reduction 13, result has 64.9 percent of original size [2021-04-16 06:58:46,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:58:46,392 INFO L142 QuantifierPusher]: treesize reduction 13, result has 77.2 percent of original size [2021-04-16 06:58:46,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:58:46,397 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-04-16 06:58:46,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:58:46,406 INFO L142 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size [2021-04-16 06:58:46,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:58:46,420 INFO L142 QuantifierPusher]: treesize reduction 222, result has 51.8 percent of original size [2021-04-16 06:58:46,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-04-16 06:58:46,505 INFO L142 QuantifierPusher]: treesize reduction 123, result has 75.8 percent of original size [2021-04-16 06:58:46,507 INFO L147 QuantifierPusher]: treesize reduction 73, result has 81.0 percent of original size 312 [2021-04-16 06:58:46,621 INFO L142 QuantifierPusher]: treesize reduction 123, result has 75.9 percent of original size [2021-04-16 06:58:46,624 INFO L147 QuantifierPusher]: treesize reduction 73, result has 81.2 percent of original size 315 [2021-04-16 06:58:46,723 INFO L142 QuantifierPusher]: treesize reduction 49, result has 91.2 percent of original size [2021-04-16 06:58:46,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 507 [2021-04-16 06:58:46,934 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2021-04-16 06:58:46,937 INFO L142 QuantifierPusher]: treesize reduction 68, result has 84.4 percent of original size [2021-04-16 06:58:46,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 368 [2021-04-16 06:58:47,040 INFO L142 QuantifierPusher]: treesize reduction 68, result has 84.2 percent of original size [2021-04-16 06:58:47,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 362 [2021-04-16 06:58:47,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:47,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:58:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:58:47,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:58:47,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:58:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:58:47,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673645074] [2021-04-16 06:58:47,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:58:47,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:58:47,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899852243] [2021-04-16 06:58:47,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:58:47,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:58:47,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:58:47,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:58:47,080 INFO L87 Difference]: Start difference. First operand 16483 states and 19293 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:59:05,418 INFO L93 Difference]: Finished difference Result 20390 states and 23981 transitions. [2021-04-16 06:59:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:59:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:59:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:59:05,446 INFO L225 Difference]: With dead ends: 20390 [2021-04-16 06:59:05,447 INFO L226 Difference]: Without dead ends: 17120 [2021-04-16 06:59:05,453 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1028.2ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:59:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17120 states. [2021-04-16 06:59:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17120 to 16732. [2021-04-16 06:59:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16732 states, 16727 states have (on average 1.16601901117953) internal successors, (19504), 16727 states have internal predecessors, (19504), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16732 states to 16732 states and 19508 transitions. [2021-04-16 06:59:23,079 INFO L78 Accepts]: Start accepts. Automaton has 16732 states and 19508 transitions. Word has length 102 [2021-04-16 06:59:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:59:23,079 INFO L480 AbstractCegarLoop]: Abstraction has 16732 states and 19508 transitions. [2021-04-16 06:59:23,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 16732 states and 19508 transitions. [2021-04-16 06:59:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:59:23,084 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:59:23,084 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:59:23,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-04-16 06:59:23,084 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:59:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:59:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash -469596658, now seen corresponding path program 55 times [2021-04-16 06:59:23,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:59:23,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013632833] [2021-04-16 06:59:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:59:23,090 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:59:23,091 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:59:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:23,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:23,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:23,170 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,179 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,181 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,182 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,183 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,184 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,185 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,186 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,187 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,188 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 06:59:23,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 06:59:23,189 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-04-16 06:59:23,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 06:59:23,195 INFO L142 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size [2021-04-16 06:59:23,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 06:59:23,206 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 06:59:23,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 06:59:23,220 INFO L142 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-04-16 06:59:23,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 06:59:23,251 INFO L142 QuantifierPusher]: treesize reduction 41, result has 90.8 percent of original size [2021-04-16 06:59:23,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 407 [2021-04-16 06:59:23,417 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 37 [2021-04-16 06:59:23,420 INFO L142 QuantifierPusher]: treesize reduction 61, result has 87.7 percent of original size [2021-04-16 06:59:23,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 434 [2021-04-16 06:59:23,578 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2021-04-16 06:59:23,581 INFO L142 QuantifierPusher]: treesize reduction 61, result has 87.8 percent of original size [2021-04-16 06:59:23,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 437 [2021-04-16 06:59:23,743 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 42 [2021-04-16 06:59:23,747 INFO L142 QuantifierPusher]: treesize reduction 123, result has 74.9 percent of original size [2021-04-16 06:59:23,749 INFO L147 QuantifierPusher]: treesize reduction 20, result has 94.6 percent of original size 347 [2021-04-16 06:59:23,916 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2021-04-16 06:59:23,919 INFO L142 QuantifierPusher]: treesize reduction 140, result has 61.7 percent of original size [2021-04-16 06:59:23,920 INFO L147 QuantifierPusher]: treesize reduction 20, result has 91.2 percent of original size 206 [2021-04-16 06:59:24,002 INFO L142 QuantifierPusher]: treesize reduction 132, result has 57.7 percent of original size [2021-04-16 06:59:24,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-04-16 06:59:24,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:24,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:24,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:59:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:59:24,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:59:24,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:59:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:59:24,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013632833] [2021-04-16 06:59:24,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:59:24,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:59:24,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560960847] [2021-04-16 06:59:24,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:59:24,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:59:24,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:59:24,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:59:24,042 INFO L87 Difference]: Start difference. First operand 16732 states and 19508 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:59:42,724 INFO L93 Difference]: Finished difference Result 26978 states and 31772 transitions. [2021-04-16 06:59:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:59:42,726 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 06:59:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:59:42,746 INFO L225 Difference]: With dead ends: 26978 [2021-04-16 06:59:42,746 INFO L226 Difference]: Without dead ends: 17324 [2021-04-16 06:59:42,755 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1252.8ms TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:59:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17324 states. [2021-04-16 06:59:59,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17324 to 17038. [2021-04-16 06:59:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17038 states, 17033 states have (on average 1.1625080725650208) internal successors, (19801), 17033 states have internal predecessors, (19801), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17038 states to 17038 states and 19805 transitions. [2021-04-16 06:59:59,946 INFO L78 Accepts]: Start accepts. Automaton has 17038 states and 19805 transitions. Word has length 102 [2021-04-16 06:59:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:59:59,946 INFO L480 AbstractCegarLoop]: Abstraction has 17038 states and 19805 transitions. [2021-04-16 06:59:59,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:59:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 17038 states and 19805 transitions. [2021-04-16 06:59:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 06:59:59,949 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:59:59,950 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:59:59,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-04-16 06:59:59,950 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:59:59,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:59:59,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2072674682, now seen corresponding path program 56 times [2021-04-16 06:59:59,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:59:59,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160748426] [2021-04-16 06:59:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:59:59,955 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:59:59,955 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:00:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:00,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:00,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:00,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:00,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 07:00:00,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:00,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:00:00,064 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-04-16 07:00:00,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-16 07:00:00,095 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-04-16 07:00:00,095 INFO L147 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size 20 [2021-04-16 07:00:00,101 INFO L142 QuantifierPusher]: treesize reduction 73, result has 58.8 percent of original size [2021-04-16 07:00:00,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 07:00:00,155 INFO L142 QuantifierPusher]: treesize reduction 74, result has 88.0 percent of original size [2021-04-16 07:00:00,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 544 [2021-04-16 07:00:00,275 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 22 [2021-04-16 07:00:00,279 INFO L142 QuantifierPusher]: treesize reduction 66, result has 92.3 percent of original size [2021-04-16 07:00:00,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 794 [2021-04-16 07:00:00,458 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 40 [2021-04-16 07:00:00,463 INFO L142 QuantifierPusher]: treesize reduction 67, result has 92.8 percent of original size [2021-04-16 07:00:00,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 864 [2021-04-16 07:00:00,605 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 37 [2021-04-16 07:00:00,607 INFO L142 QuantifierPusher]: treesize reduction 49, result has 89.2 percent of original size [2021-04-16 07:00:00,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 404 [2021-04-16 07:00:00,696 INFO L142 QuantifierPusher]: treesize reduction 28, result has 58.8 percent of original size [2021-04-16 07:00:00,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-04-16 07:00:00,735 INFO L142 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-04-16 07:00:00,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-16 07:00:00,756 INFO L142 QuantifierPusher]: treesize reduction 15, result has 93.3 percent of original size [2021-04-16 07:00:00,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-04-16 07:00:00,832 INFO L142 QuantifierPusher]: treesize reduction 42, result has 88.9 percent of original size [2021-04-16 07:00:00,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 337 [2021-04-16 07:00:00,857 INFO L142 QuantifierPusher]: treesize reduction 59, result has 92.3 percent of original size [2021-04-16 07:00:00,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 712 [2021-04-16 07:00:01,010 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 31 [2021-04-16 07:00:01,014 INFO L142 QuantifierPusher]: treesize reduction 59, result has 91.4 percent of original size [2021-04-16 07:00:01,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 624 [2021-04-16 07:00:01,153 INFO L142 QuantifierPusher]: treesize reduction 55, result has 90.7 percent of original size [2021-04-16 07:00:01,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 534 [2021-04-16 07:00:01,163 INFO L142 QuantifierPusher]: treesize reduction 37, result has 83.3 percent of original size [2021-04-16 07:00:01,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-04-16 07:00:01,167 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 07:00:01,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:01,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:01,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:01,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:00:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:01,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:01,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:00:01,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160748426] [2021-04-16 07:00:01,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:00:01,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 07:00:01,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858276748] [2021-04-16 07:00:01,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 07:00:01,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:00:01,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 07:00:01,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-04-16 07:00:01,197 INFO L87 Difference]: Start difference. First operand 17038 states and 19805 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:00:22,519 INFO L93 Difference]: Finished difference Result 22149 states and 26071 transitions. [2021-04-16 07:00:22,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 07:00:22,521 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 07:00:22,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:00:22,540 INFO L225 Difference]: With dead ends: 22149 [2021-04-16 07:00:22,541 INFO L226 Difference]: Without dead ends: 17672 [2021-04-16 07:00:22,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1549.6ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-04-16 07:00:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17672 states. [2021-04-16 07:00:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17672 to 15763. [2021-04-16 07:00:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15763 states, 15758 states have (on average 1.1660743749206752) internal successors, (18375), 15758 states have internal predecessors, (18375), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15763 states to 15763 states and 18379 transitions. [2021-04-16 07:00:40,012 INFO L78 Accepts]: Start accepts. Automaton has 15763 states and 18379 transitions. Word has length 102 [2021-04-16 07:00:40,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:00:40,012 INFO L480 AbstractCegarLoop]: Abstraction has 15763 states and 18379 transitions. [2021-04-16 07:00:40,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:40,012 INFO L276 IsEmpty]: Start isEmpty. Operand 15763 states and 18379 transitions. [2021-04-16 07:00:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 07:00:40,016 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:00:40,016 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 8, 8, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:00:40,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-04-16 07:00:40,016 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:00:40,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:00:40,016 INFO L82 PathProgramCache]: Analyzing trace with hash 637840838, now seen corresponding path program 57 times [2021-04-16 07:00:40,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:00:40,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217465721] [2021-04-16 07:00:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:00:40,022 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 07:00:40,023 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:00:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:40,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:40,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:40,098 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,107 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,108 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,109 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,110 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,111 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,112 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,113 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,115 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,116 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:00:40,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:00:40,117 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-04-16 07:00:40,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 07:00:40,121 INFO L142 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size [2021-04-16 07:00:40,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 07:00:40,130 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 07:00:40,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 07:00:40,140 INFO L142 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-04-16 07:00:40,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 07:00:40,165 INFO L142 QuantifierPusher]: treesize reduction 42, result has 90.6 percent of original size [2021-04-16 07:00:40,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 406 [2021-04-16 07:00:40,325 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 44 [2021-04-16 07:00:40,327 INFO L142 QuantifierPusher]: treesize reduction 64, result has 87.1 percent of original size [2021-04-16 07:00:40,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 431 [2021-04-16 07:00:40,466 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 45 [2021-04-16 07:00:40,469 INFO L142 QuantifierPusher]: treesize reduction 64, result has 87.1 percent of original size [2021-04-16 07:00:40,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 434 [2021-04-16 07:00:40,599 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 42 [2021-04-16 07:00:40,600 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 07:00:40,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 07:00:40,638 INFO L142 QuantifierPusher]: treesize reduction 123, result has 74.9 percent of original size [2021-04-16 07:00:40,639 INFO L147 QuantifierPusher]: treesize reduction 20, result has 94.6 percent of original size 347 [2021-04-16 07:00:40,812 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2021-04-16 07:00:40,815 INFO L142 QuantifierPusher]: treesize reduction 135, result has 63.2 percent of original size [2021-04-16 07:00:40,816 INFO L147 QuantifierPusher]: treesize reduction 27, result has 88.4 percent of original size 205 [2021-04-16 07:00:40,895 INFO L142 QuantifierPusher]: treesize reduction 125, result has 59.3 percent of original size [2021-04-16 07:00:40,896 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.2 percent of original size 175 [2021-04-16 07:00:40,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:40,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:00:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:00:40,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:00:40,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:00:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:00:40,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217465721] [2021-04-16 07:00:40,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:00:40,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 07:00:40,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303975289] [2021-04-16 07:00:40,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 07:00:40,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:00:40,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 07:00:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-04-16 07:00:40,937 INFO L87 Difference]: Start difference. First operand 15763 states and 18379 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:00:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:00:58,822 INFO L93 Difference]: Finished difference Result 26297 states and 30922 transitions. [2021-04-16 07:00:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 07:00:58,823 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-04-16 07:00:58,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:00:58,836 INFO L225 Difference]: With dead ends: 26297 [2021-04-16 07:00:58,836 INFO L226 Difference]: Without dead ends: 16451 [2021-04-16 07:00:58,844 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1357.0ms TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-04-16 07:00:58,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16451 states. [2021-04-16 07:01:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16451 to 16069. [2021-04-16 07:01:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16069 states, 16064 states have (on average 1.1623505976095618) internal successors, (18672), 16064 states have internal predecessors, (18672), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:01:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16069 states to 16069 states and 18676 transitions. [2021-04-16 07:01:15,411 INFO L78 Accepts]: Start accepts. Automaton has 16069 states and 18676 transitions. Word has length 102 [2021-04-16 07:01:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:01:15,411 INFO L480 AbstractCegarLoop]: Abstraction has 16069 states and 18676 transitions. [2021-04-16 07:01:15,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:01:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 16069 states and 18676 transitions. [2021-04-16 07:01:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-04-16 07:01:15,415 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:01:15,415 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 8, 8, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:01:15,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-04-16 07:01:15,415 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:01:15,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:01:15,415 INFO L82 PathProgramCache]: Analyzing trace with hash 407980110, now seen corresponding path program 58 times [2021-04-16 07:01:15,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:01:15,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852482782] [2021-04-16 07:01:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:01:15,421 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 07:01:15,422 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:01:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:01:15,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:01:15,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:01:15,510 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,519 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,520 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,521 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,522 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,523 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,524 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,525 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,526 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,526 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-04-16 07:01:15,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-16 07:01:15,527 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-04-16 07:01:15,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-04-16 07:01:15,531 INFO L142 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size [2021-04-16 07:01:15,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 07:01:15,539 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-04-16 07:01:15,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-16 07:01:15,550 INFO L142 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-04-16 07:01:15,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 07:01:15,574 INFO L142 QuantifierPusher]: treesize reduction 63, result has 85.9 percent of original size [2021-04-16 07:01:15,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 383 [2021-04-16 07:01:15,637 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.2 percent of original size [2021-04-16 07:01:15,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-04-16 07:01:15,750 INFO L142 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size [2021-04-16 07:01:15,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-04-16 07:01:15,912 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 41 [2021-04-16 07:01:15,913 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 07:01:15,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 07:01:15,953 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-04-16 07:01:15,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 07:01:15,992 INFO L142 QuantifierPusher]: treesize reduction 133, result has 72.9 percent of original size [2021-04-16 07:01:15,993 INFO L147 QuantifierPusher]: treesize reduction 10, result has 97.2 percent of original size 347 [2021-04-16 07:01:16,151 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2021-04-16 07:01:16,153 INFO L142 QuantifierPusher]: treesize reduction 153, result has 58.3 percent of original size [2021-04-16 07:01:16,154 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.7 percent of original size 207 [2021-04-16 07:01:16,223 INFO L142 QuantifierPusher]: treesize reduction 123, result has 59.9 percent of original size [2021-04-16 07:01:16,224 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.2 percent of original size 177 [2021-04-16 07:01:16,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:01:16,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:01:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:01:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:01:16,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:01:16,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:01:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:01:16,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852482782] [2021-04-16 07:01:16,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:01:16,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 07:01:16,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473991458] [2021-04-16 07:01:16,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 07:01:16,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:01:16,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 07:01:16,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-04-16 07:01:16,268 INFO L87 Difference]: Start difference. First operand 16069 states and 18676 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)