/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/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:21:48,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:21:48,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:21:48,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:21:48,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:21:48,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:21:48,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:21:48,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:21:48,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:21:48,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:21:48,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:21:48,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:21:48,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:21:48,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:21:48,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:21:48,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:21:48,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:21:48,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:21:48,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:21:48,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:21:48,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 07:21:48,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:21:48,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:21:48,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:21:48,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:21:48,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:21:48,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:21:48,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:21:48,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:21:48,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:21:48,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:21:48,969 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:21:48,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:21:48,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:21:48,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:21:48,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:21:48,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:21:48,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:21:48,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:21:48,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:21:48,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:21:48,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:21:48,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:21:48,971 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:21:48,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:21:49,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:21:49,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:21:49,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:21:49,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:21:49,257 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:21:49,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2021-05-01 07:21:49,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ad3b52c/cc0b97700ade4467b7a78b341cc25ad0/FLAG019176273 [2021-05-01 07:21:49,695 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:21:49,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2021-05-01 07:21:49,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ad3b52c/cc0b97700ade4467b7a78b341cc25ad0/FLAG019176273 [2021-05-01 07:21:50,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ad3b52c/cc0b97700ade4467b7a78b341cc25ad0 [2021-05-01 07:21:50,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:21:50,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:21:50,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:21:50,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:21:50,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:21:50,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0dca3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50, skipping insertion in model container [2021-05-01 07:21:50,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:21:50,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:21:50,231 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2021-05-01 07:21:50,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:21:50,244 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:21:50,303 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2021-05-01 07:21:50,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:21:50,321 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:21:50,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50 WrapperNode [2021-05-01 07:21:50,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:21:50,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:21:50,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:21:50,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:21:50,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (1/1) ... [2021-05-01 07:21:50,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:21:50,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:21:50,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:21:50,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:21:50,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (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 [2021-05-01 07:21:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:21:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:21:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:21:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:21:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:21:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:21:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:21:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:21:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 07:21:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 07:21:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:21:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:21:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:21:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:21:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:21:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:21:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:21:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:21:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:21:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:21:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:21:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:21:50,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:21:50,698 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 07:21:50,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:21:50 BoogieIcfgContainer [2021-05-01 07:21:50,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:21:50,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:21:50,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:21:50,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:21:50,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:21:50" (1/3) ... [2021-05-01 07:21:50,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343987a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:21:50, skipping insertion in model container [2021-05-01 07:21:50,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:50" (2/3) ... [2021-05-01 07:21:50,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343987a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:21:50, skipping insertion in model container [2021-05-01 07:21:50,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:21:50" (3/3) ... [2021-05-01 07:21:50,704 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2021-05-01 07:21:50,708 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:21:50,716 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:21:50,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:21:50,752 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:21:50,752 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:21:50,753 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:21:50,753 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:21:50,753 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:21:50,753 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:21:50,753 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:21:50,753 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:21:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-05-01 07:21:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-01 07:21:50,771 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:50,772 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:50,772 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:50,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1244516831, now seen corresponding path program 1 times [2021-05-01 07:21:50,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:50,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262094519] [2021-05-01 07:21:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:50,834 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:21:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:50,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:50,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:50,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:50,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:50,991 INFO L142 QuantifierPusher]: treesize reduction 10, result has 74.4 percent of original size [2021-05-01 07:21:50,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:21:51,043 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size [2021-05-01 07:21:51,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:21:51,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:21:51,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:51,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:51,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:51,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:51,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:51,131 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:51,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262094519] [2021-05-01 07:21:51,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [262094519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:51,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:51,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 07:21:51,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454886970] [2021-05-01 07:21:51,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 07:21:51,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:51,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 07:21:51,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-01 07:21:51,147 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 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 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:51,466 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2021-05-01 07:21:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 07:21:51,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 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 13 [2021-05-01 07:21:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:51,471 INFO L225 Difference]: With dead ends: 47 [2021-05-01 07:21:51,471 INFO L226 Difference]: Without dead ends: 15 [2021-05-01 07:21:51,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 304.4ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-05-01 07:21:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-01 07:21:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-01 07:21:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-05-01 07:21:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-01 07:21:51,500 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-01 07:21:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:51,501 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-01 07:21:51,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-01 07:21:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 07:21:51,502 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:51,502 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:51,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:21:51,502 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1450374075, now seen corresponding path program 1 times [2021-05-01 07:21:51,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:51,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280156876] [2021-05-01 07:21:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:51,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:51,554 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_6 0)) InVars {main_~x~0=v_main_~x~0_6} OutVars{main_~x~0=v_main_~x~0_6} AuxVars[] AssignedVars[] [2021-05-01 07:21:51,573 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:51,577 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,583 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:51,585 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:51,586 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:51,591 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:51,595 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,597 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,611 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,615 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,617 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,619 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,621 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,628 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,630 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,632 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:51,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:21:51,653 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:51,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:51,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:51,714 INFO L142 QuantifierPusher]: treesize reduction 41, result has 19.6 percent of original size [2021-05-01 07:21:51,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:51,723 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-05-01 07:21:51,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 07:21:51,762 INFO L142 QuantifierPusher]: treesize reduction 49, result has 50.0 percent of original size [2021-05-01 07:21:51,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:21:51,788 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:21:51,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:51,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:51,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:51,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:51,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:51,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:51,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:21:51,915 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:21:51,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:21:51,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:51,937 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:51,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280156876] [2021-05-01 07:21:51,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [280156876] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:51,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:51,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 07:21:51,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229252498] [2021-05-01 07:21:51,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 07:21:51,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:51,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 07:21:51,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-01 07:21:51,942 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:52,226 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-05-01 07:21:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 07:21:52,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 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 14 [2021-05-01 07:21:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:52,228 INFO L225 Difference]: With dead ends: 22 [2021-05-01 07:21:52,228 INFO L226 Difference]: Without dead ends: 16 [2021-05-01 07:21:52,229 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 348.8ms TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:21:52,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-01 07:21:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-01 07:21:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-05-01 07:21:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-01 07:21:52,233 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-05-01 07:21:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:52,233 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-01 07:21:52,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-01 07:21:52,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-01 07:21:52,233 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:52,233 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:52,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:21:52,234 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:52,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:52,234 INFO L82 PathProgramCache]: Analyzing trace with hash -757985953, now seen corresponding path program 2 times [2021-05-01 07:21:52,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:52,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677119207] [2021-05-01 07:21:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:52,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:52,240 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_10 0)) InVars {main_~x~0=v_main_~x~0_10} OutVars{main_~x~0=v_main_~x~0_10} AuxVars[] AssignedVars[] [2021-05-01 07:21:52,245 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:52,247 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,250 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:52,256 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:52,257 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:52,260 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:52,266 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,268 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,270 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,273 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,274 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,276 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,278 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,279 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,281 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:52,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:21:52,305 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:52,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:52,367 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-05-01 07:21:52,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:52,375 INFO L142 QuantifierPusher]: treesize reduction 23, result has 71.3 percent of original size [2021-05-01 07:21:52,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 07:21:52,424 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.7 percent of original size [2021-05-01 07:21:52,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:21:52,451 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:21:52,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:52,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:52,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:52,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:52,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:52,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:21:52,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,559 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:21:52,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,591 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:21:52,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:52,609 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:52,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677119207] [2021-05-01 07:21:52,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1677119207] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:52,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:52,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 07:21:52,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133703769] [2021-05-01 07:21:52,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 07:21:52,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:52,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 07:21:52,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-05-01 07:21:52,611 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:52,941 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-05-01 07:21:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 07:21:52,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (3), 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 15 [2021-05-01 07:21:52,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:52,943 INFO L225 Difference]: With dead ends: 23 [2021-05-01 07:21:52,943 INFO L226 Difference]: Without dead ends: 17 [2021-05-01 07:21:52,943 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 381.5ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-05-01 07:21:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-01 07:21:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-01 07:21:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-05-01 07:21:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-01 07:21:52,951 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-05-01 07:21:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:52,951 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-01 07:21:52,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-01 07:21:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-01 07:21:52,952 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:52,952 INFO L519 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:52,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 07:21:52,952 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:52,953 INFO L82 PathProgramCache]: Analyzing trace with hash -497670085, now seen corresponding path program 3 times [2021-05-01 07:21:52,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:52,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519102135] [2021-05-01 07:21:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:52,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:52,959 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_15 0)) InVars {main_~x~0=v_main_~x~0_15} OutVars{main_~x~0=v_main_~x~0_15} AuxVars[] AssignedVars[] [2021-05-01 07:21:52,963 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:52,964 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,967 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:52,968 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:52,969 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:52,971 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:52,974 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,976 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,978 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,982 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,984 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,986 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,989 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,991 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,993 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,997 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:53,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:21:53,013 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:53,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,051 INFO L142 QuantifierPusher]: treesize reduction 30, result has 18.9 percent of original size [2021-05-01 07:21:53,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:21:53,057 INFO L142 QuantifierPusher]: treesize reduction 23, result has 65.2 percent of original size [2021-05-01 07:21:53,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 07:21:53,089 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-05-01 07:21:53,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:21:53,110 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:21:53,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:53,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:53,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:53,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:53,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:53,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:21:53,201 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:21:53,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:21:53,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,225 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-05-01 07:21:53,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,251 INFO L147 QuantifierPusher]: treesize reduction 6, result has 79.3 percent of original size 23 [2021-05-01 07:21:53,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,268 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:53,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519102135] [2021-05-01 07:21:53,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [519102135] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:53,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:53,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-01 07:21:53,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915090604] [2021-05-01 07:21:53,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 07:21:53,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:53,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 07:21:53,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-05-01 07:21:53,270 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:53,603 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-05-01 07:21:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-01 07:21:53,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (3), 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 16 [2021-05-01 07:21:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:53,606 INFO L225 Difference]: With dead ends: 24 [2021-05-01 07:21:53,606 INFO L226 Difference]: Without dead ends: 18 [2021-05-01 07:21:53,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 380.0ms TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:21:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-01 07:21:53,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-01 07:21:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-05-01 07:21:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-01 07:21:53,610 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-05-01 07:21:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:53,610 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-01 07:21:53,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-01 07:21:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 07:21:53,611 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:53,611 INFO L519 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:53,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 07:21:53,611 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:53,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:53,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1017812769, now seen corresponding path program 4 times [2021-05-01 07:21:53,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:53,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612675915] [2021-05-01 07:21:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:53,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:53,620 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_21 0)) InVars {main_~x~0=v_main_~x~0_21} OutVars{main_~x~0=v_main_~x~0_21} AuxVars[] AssignedVars[] [2021-05-01 07:21:53,625 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:53,629 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,631 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,635 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,638 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,640 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,642 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,643 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,646 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:53,649 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:53,650 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:53,652 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:53,655 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,657 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,658 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,667 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:53,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:21:53,683 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:53,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,721 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-05-01 07:21:53,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:21:53,740 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-05-01 07:21:53,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 07:21:53,768 INFO L142 QuantifierPusher]: treesize reduction 49, result has 44.9 percent of original size [2021-05-01 07:21:53,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 07:21:53,800 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:21:53,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:53,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:53,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:53,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:53,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:53,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:21:53,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,914 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:21:53,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,951 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size 18 [2021-05-01 07:21:53,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,971 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size 24 [2021-05-01 07:21:53,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,998 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size 30 [2021-05-01 07:21:54,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:54,021 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:54,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612675915] [2021-05-01 07:21:54,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1612675915] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:54,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:54,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 07:21:54,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88081037] [2021-05-01 07:21:54,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-01 07:21:54,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:54,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-01 07:21:54,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-05-01 07:21:54,023 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 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) [2021-05-01 07:21:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:54,423 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-05-01 07:21:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 07:21:54,424 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 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 [2021-05-01 07:21:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:54,425 INFO L225 Difference]: With dead ends: 25 [2021-05-01 07:21:54,425 INFO L226 Difference]: Without dead ends: 19 [2021-05-01 07:21:54,426 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 524.7ms TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-05-01 07:21:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-01 07:21:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-01 07:21:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2021-05-01 07:21:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-05-01 07:21:54,434 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2021-05-01 07:21:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:54,434 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-05-01 07:21:54,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 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) [2021-05-01 07:21:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-05-01 07:21:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 07:21:54,435 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:54,436 INFO L519 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:54,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 07:21:54,436 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:54,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:54,436 INFO L82 PathProgramCache]: Analyzing trace with hash 37633211, now seen corresponding path program 5 times [2021-05-01 07:21:54,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:54,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465900442] [2021-05-01 07:21:54,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:54,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:54,448 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_28 0)) InVars {main_~x~0=v_main_~x~0_28} OutVars{main_~x~0=v_main_~x~0_28} AuxVars[] AssignedVars[] [2021-05-01 07:21:54,451 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:54,452 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,457 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:54,458 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:54,459 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:54,462 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,464 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,465 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,467 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:54,470 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,472 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,474 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,477 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,480 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,481 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:54,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:21:54,493 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:54,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:54,527 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 07:21:54,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:54,535 INFO L142 QuantifierPusher]: treesize reduction 17, result has 81.3 percent of original size [2021-05-01 07:21:54,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 07:21:54,567 INFO L142 QuantifierPusher]: treesize reduction 33, result has 38.9 percent of original size [2021-05-01 07:21:54,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:21:54,577 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:21:54,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:54,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:54,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:54,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:54,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:54,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:21:54,663 INFO L142 QuantifierPusher]: treesize reduction 13, result has 65.8 percent of original size [2021-05-01 07:21:54,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:21:54,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,698 INFO L147 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size 22 [2021-05-01 07:21:54,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,723 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:21:54,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:21:54,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,779 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:21:54,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:54,806 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:54,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465900442] [2021-05-01 07:21:54,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [465900442] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:54,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:54,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 07:21:54,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760954201] [2021-05-01 07:21:54,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 07:21:54,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:54,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 07:21:54,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-05-01 07:21:54,808 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:55,241 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-05-01 07:21:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-01 07:21:55,244 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (3), 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 18 [2021-05-01 07:21:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:55,245 INFO L225 Difference]: With dead ends: 26 [2021-05-01 07:21:55,245 INFO L226 Difference]: Without dead ends: 20 [2021-05-01 07:21:55,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 511.1ms TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:21:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-01 07:21:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-01 07:21:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-05-01 07:21:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-05-01 07:21:55,249 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2021-05-01 07:21:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:55,250 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-05-01 07:21:55,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-05-01 07:21:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-01 07:21:55,250 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:55,250 INFO L519 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:55,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 07:21:55,251 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:55,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1603279777, now seen corresponding path program 6 times [2021-05-01 07:21:55,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:55,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562068590] [2021-05-01 07:21:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:55,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:55,257 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_36 0)) InVars {main_~x~0=v_main_~x~0_36} OutVars{main_~x~0=v_main_~x~0_36} AuxVars[] AssignedVars[] [2021-05-01 07:21:55,259 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:55,260 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,262 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:55,263 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:55,264 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:55,266 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,267 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,269 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,271 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:55,273 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,275 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,276 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,280 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,283 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,283 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:55,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:21:55,295 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:55,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:55,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:55,325 INFO L142 QuantifierPusher]: treesize reduction 24, result has 36.8 percent of original size [2021-05-01 07:21:55,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:55,339 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.1 percent of original size [2021-05-01 07:21:55,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:21:55,372 INFO L142 QuantifierPusher]: treesize reduction 26, result has 64.4 percent of original size [2021-05-01 07:21:55,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:21:55,396 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:21:55,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:55,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:55,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:55,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:55,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:55,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:21:55,484 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:21:55,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:21:55,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,498 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:21:55,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,514 INFO L147 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size 26 [2021-05-01 07:21:55,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:21:55,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,568 INFO L147 QuantifierPusher]: treesize reduction 6, result has 85.0 percent of original size 34 [2021-05-01 07:21:55,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,596 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:21:55,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:55,621 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:55,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562068590] [2021-05-01 07:21:55,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1562068590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:55,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:55,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:21:55,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489521067] [2021-05-01 07:21:55,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-01 07:21:55,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:55,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-01 07:21:55,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-05-01 07:21:55,623 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 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) [2021-05-01 07:21:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:56,131 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-05-01 07:21:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 07:21:56,131 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 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 [2021-05-01 07:21:56,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:56,132 INFO L225 Difference]: With dead ends: 27 [2021-05-01 07:21:56,132 INFO L226 Difference]: Without dead ends: 21 [2021-05-01 07:21:56,132 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 605.9ms TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-05-01 07:21:56,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-01 07:21:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-05-01 07:21:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-05-01 07:21:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-05-01 07:21:56,136 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2021-05-01 07:21:56,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:56,136 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-05-01 07:21:56,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 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) [2021-05-01 07:21:56,137 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-05-01 07:21:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-01 07:21:56,137 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:56,137 INFO L519 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:56,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 07:21:56,137 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:56,138 INFO L82 PathProgramCache]: Analyzing trace with hash -931974853, now seen corresponding path program 7 times [2021-05-01 07:21:56,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:56,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542133739] [2021-05-01 07:21:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:56,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:56,149 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_45 0)) InVars {main_~x~0=v_main_~x~0_45} OutVars{main_~x~0=v_main_~x~0_45} AuxVars[] AssignedVars[] [2021-05-01 07:21:56,153 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:56,155 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,158 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:56,158 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:56,159 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:56,162 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,163 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,165 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,169 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:56,170 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,172 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,174 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,175 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,177 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,179 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,179 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:56,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:21:56,192 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:56,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:56,216 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 07:21:56,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:56,224 INFO L142 QuantifierPusher]: treesize reduction 32, result has 62.8 percent of original size [2021-05-01 07:21:56,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 07:21:56,260 INFO L142 QuantifierPusher]: treesize reduction 59, result has 26.3 percent of original size [2021-05-01 07:21:56,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:21:56,270 INFO L142 QuantifierPusher]: treesize reduction 49, result has 15.5 percent of original size [2021-05-01 07:21:56,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:56,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:56,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:56,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:56,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:56,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:21:56,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,360 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:21:56,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,384 INFO L147 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size 22 [2021-05-01 07:21:56,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,404 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:21:56,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,422 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.4 percent of original size 34 [2021-05-01 07:21:56,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,443 INFO L147 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size 34 [2021-05-01 07:21:56,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,478 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:21:56,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:21:56,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:56,554 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:56,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542133739] [2021-05-01 07:21:56,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1542133739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:56,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:56,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-01 07:21:56,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541396816] [2021-05-01 07:21:56,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:21:56,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:56,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:21:56,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:21:56,556 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:57,087 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-05-01 07:21:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-01 07:21:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (3), 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 20 [2021-05-01 07:21:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:57,089 INFO L225 Difference]: With dead ends: 28 [2021-05-01 07:21:57,089 INFO L226 Difference]: Without dead ends: 22 [2021-05-01 07:21:57,089 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 686.2ms TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2021-05-01 07:21:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-01 07:21:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-01 07:21:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-05-01 07:21:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-05-01 07:21:57,093 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2021-05-01 07:21:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:57,093 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-05-01 07:21:57,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:57,093 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-05-01 07:21:57,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-01 07:21:57,094 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:57,094 INFO L519 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:57,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 07:21:57,096 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:57,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1596358689, now seen corresponding path program 8 times [2021-05-01 07:21:57,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:57,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568658933] [2021-05-01 07:21:57,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:57,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:57,111 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_55 0)) InVars {main_~x~0=v_main_~x~0_55} OutVars{main_~x~0=v_main_~x~0_55} AuxVars[] AssignedVars[] [2021-05-01 07:21:57,113 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:57,116 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,117 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,119 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,126 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,128 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,130 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,131 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,132 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:57,134 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:57,134 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:57,136 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,139 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,141 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:57,142 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:57,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:21:57,154 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:57,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:57,202 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-05-01 07:21:57,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:57,208 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.0 percent of original size [2021-05-01 07:21:57,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:21:57,227 INFO L142 QuantifierPusher]: treesize reduction 19, result has 68.9 percent of original size [2021-05-01 07:21:57,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:21:57,249 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:21:57,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:57,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:57,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:57,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:57,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:57,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:21:57,395 INFO L142 QuantifierPusher]: treesize reduction 13, result has 65.8 percent of original size [2021-05-01 07:21:57,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:21:57,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,412 INFO L147 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size 22 [2021-05-01 07:21:57,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,432 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:21:57,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,454 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.4 percent of original size 34 [2021-05-01 07:21:57,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,480 INFO L147 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size 34 [2021-05-01 07:21:57,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,510 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:21:57,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,544 INFO L147 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size 42 [2021-05-01 07:21:57,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,578 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.5 percent of original size 46 [2021-05-01 07:21:57,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:57,611 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:57,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568658933] [2021-05-01 07:21:57,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [568658933] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:57,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:57,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 07:21:57,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846629697] [2021-05-01 07:21:57,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-01 07:21:57,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-01 07:21:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-05-01 07:21:57,612 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 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) [2021-05-01 07:21:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:58,241 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-05-01 07:21:58,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:21:58,242 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 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 [2021-05-01 07:21:58,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:58,242 INFO L225 Difference]: With dead ends: 29 [2021-05-01 07:21:58,242 INFO L226 Difference]: Without dead ends: 23 [2021-05-01 07:21:58,244 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 771.0ms TimeCoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2021-05-01 07:21:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-01 07:21:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-05-01 07:21:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 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) [2021-05-01 07:21:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-05-01 07:21:58,250 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2021-05-01 07:21:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:58,250 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-05-01 07:21:58,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 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) [2021-05-01 07:21:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-05-01 07:21:58,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:21:58,251 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:58,251 INFO L519 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:58,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-01 07:21:58,251 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:58,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:58,251 INFO L82 PathProgramCache]: Analyzing trace with hash -717421125, now seen corresponding path program 9 times [2021-05-01 07:21:58,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:58,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176216025] [2021-05-01 07:21:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:58,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:58,258 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_66 0)) InVars {main_~x~0=v_main_~x~0_66} OutVars{main_~x~0=v_main_~x~0_66} AuxVars[] AssignedVars[] [2021-05-01 07:21:58,260 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:58,263 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,265 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,266 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,268 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,270 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,272 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,272 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,274 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:58,276 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:58,276 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:58,279 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:58,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,282 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,284 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,285 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:58,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:21:58,298 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:58,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:58,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:58,336 INFO L142 QuantifierPusher]: treesize reduction 23, result has 30.3 percent of original size [2021-05-01 07:21:58,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:58,344 INFO L142 QuantifierPusher]: treesize reduction 44, result has 53.2 percent of original size [2021-05-01 07:21:58,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:21:58,372 INFO L142 QuantifierPusher]: treesize reduction 34, result has 58.0 percent of original size [2021-05-01 07:21:58,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:21:58,395 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:21:58,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:58,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:58,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:58,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:58,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:58,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:21:58,487 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:21:58,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:21:58,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,502 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:21:58,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,517 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.3 percent of original size 26 [2021-05-01 07:21:58,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,534 INFO L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-05-01 07:21:58,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,555 INFO L147 QuantifierPusher]: treesize reduction 6, result has 85.0 percent of original size 34 [2021-05-01 07:21:58,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 07:21:58,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,608 INFO L147 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size 42 [2021-05-01 07:21:58,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,639 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:21:58,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,672 INFO L147 QuantifierPusher]: treesize reduction 8, result has 86.2 percent of original size 50 [2021-05-01 07:21:58,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:58,707 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:58,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176216025] [2021-05-01 07:21:58,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [176216025] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:58,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:58,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 07:21:58,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469261077] [2021-05-01 07:21:58,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 07:21:58,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:58,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 07:21:58,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-05-01 07:21:58,709 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:59,388 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-05-01 07:21:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-01 07:21:59,389 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (3), 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 22 [2021-05-01 07:21:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:59,389 INFO L225 Difference]: With dead ends: 30 [2021-05-01 07:21:59,389 INFO L226 Difference]: Without dead ends: 24 [2021-05-01 07:21:59,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 818.6ms TimeCoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:21:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-01 07:21:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-01 07:21:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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) [2021-05-01 07:21:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-01 07:21:59,393 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2021-05-01 07:21:59,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:59,393 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-01 07:21:59,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:21:59,394 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-01 07:21:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 07:21:59,394 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:59,394 INFO L519 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:59,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-01 07:21:59,394 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:59,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:59,395 INFO L82 PathProgramCache]: Analyzing trace with hash 759839583, now seen corresponding path program 10 times [2021-05-01 07:21:59,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:59,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902237054] [2021-05-01 07:21:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:59,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:59,399 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_78 0)) InVars {main_~x~0=v_main_~x~0_78} OutVars{main_~x~0=v_main_~x~0_78} AuxVars[] AssignedVars[] [2021-05-01 07:21:59,401 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:21:59,403 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,405 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,407 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,409 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,411 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,412 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,413 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,415 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:21:59,416 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:59,416 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:59,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,420 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,421 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,423 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:21:59,423 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:21:59,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:21:59,435 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:59,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:59,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:59,482 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-05-01 07:21:59,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:21:59,487 INFO L142 QuantifierPusher]: treesize reduction 32, result has 50.8 percent of original size [2021-05-01 07:21:59,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:21:59,513 INFO L142 QuantifierPusher]: treesize reduction 23, result has 55.8 percent of original size [2021-05-01 07:21:59,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:21:59,531 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:21:59,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:21:59,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:59,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:59,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:59,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:59,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:59,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:21:59,620 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-05-01 07:21:59,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:21:59,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,634 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-05-01 07:21:59,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:21:59,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:21:59,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,695 INFO L147 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size 31 [2021-05-01 07:21:59,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,718 INFO L147 QuantifierPusher]: treesize reduction 6, result has 85.4 percent of original size 35 [2021-05-01 07:21:59,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 07:21:59,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,773 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size 47 [2021-05-01 07:21:59,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,806 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size 53 [2021-05-01 07:21:59,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 07:21:59,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:59,891 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:59,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902237054] [2021-05-01 07:21:59,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [902237054] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:59,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:59,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:21:59,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810378582] [2021-05-01 07:21:59,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-01 07:21:59,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:59,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-01 07:21:59,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-05-01 07:21:59,893 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 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) [2021-05-01 07:22:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:00,642 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-05-01 07:22:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 07:22:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 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 [2021-05-01 07:22:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:00,643 INFO L225 Difference]: With dead ends: 31 [2021-05-01 07:22:00,643 INFO L226 Difference]: Without dead ends: 25 [2021-05-01 07:22:00,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 896.8ms TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 07:22:00,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-01 07:22:00,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-01 07:22:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2021-05-01 07:22:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-05-01 07:22:00,647 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2021-05-01 07:22:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:00,647 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-05-01 07:22:00,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 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) [2021-05-01 07:22:00,647 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-05-01 07:22:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-01 07:22:00,648 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:00,648 INFO L519 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:00,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-01 07:22:00,648 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:00,648 INFO L82 PathProgramCache]: Analyzing trace with hash -689718725, now seen corresponding path program 11 times [2021-05-01 07:22:00,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:00,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812078177] [2021-05-01 07:22:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:00,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:00,655 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_91 0)) InVars {main_~x~0=v_main_~x~0_91} OutVars{main_~x~0=v_main_~x~0_91} AuxVars[] AssignedVars[] [2021-05-01 07:22:00,657 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:00,658 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,660 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:00,661 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:00,661 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:00,663 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:00,666 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,668 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,669 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,671 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,673 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,676 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,677 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,679 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,679 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:00,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:00,691 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:00,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:00,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:00,709 INFO L142 QuantifierPusher]: treesize reduction 30, result has 18.9 percent of original size [2021-05-01 07:22:00,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:00,714 INFO L142 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size [2021-05-01 07:22:00,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:00,736 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-05-01 07:22:00,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:22:00,753 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:00,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:00,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:00,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:00,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:00,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:00,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:00,838 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:22:00,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:22:00,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:22:00,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 07:22:00,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,885 INFO L147 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size 27 [2021-05-01 07:22:00,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:22:00,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 07:22:00,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,952 INFO L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-05-01 07:22:00,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 07:22:01,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,018 INFO L147 QuantifierPusher]: treesize reduction 8, result has 85.5 percent of original size 47 [2021-05-01 07:22:01,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 07:22:01,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,094 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.2 percent of original size 55 [2021-05-01 07:22:01,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:01,137 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:01,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812078177] [2021-05-01 07:22:01,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1812078177] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:01,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:01,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-01 07:22:01,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877997877] [2021-05-01 07:22:01,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:22:01,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:01,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:22:01,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:22:01,139 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:01,966 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-05-01 07:22:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-01 07:22:01,967 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (3), 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 24 [2021-05-01 07:22:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:01,967 INFO L225 Difference]: With dead ends: 32 [2021-05-01 07:22:01,967 INFO L226 Difference]: Without dead ends: 26 [2021-05-01 07:22:01,968 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 981.2ms TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 07:22:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-01 07:22:01,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-01 07:22:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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) [2021-05-01 07:22:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-05-01 07:22:01,971 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2021-05-01 07:22:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:01,971 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-05-01 07:22:01,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-05-01 07:22:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-01 07:22:01,972 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:01,972 INFO L519 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:01,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-01 07:22:01,972 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1618613983, now seen corresponding path program 12 times [2021-05-01 07:22:01,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:01,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875748645] [2021-05-01 07:22:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:01,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:01,978 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_105 0)) InVars {main_~x~0=v_main_~x~0_105} OutVars{main_~x~0=v_main_~x~0_105} AuxVars[] AssignedVars[] [2021-05-01 07:22:01,979 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:01,980 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,982 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:01,983 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:01,983 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:01,986 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:01,989 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,991 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,993 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,995 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,996 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,998 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,000 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,002 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,004 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,005 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:02,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:02,019 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:02,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:02,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:02,037 INFO L142 QuantifierPusher]: treesize reduction 30, result has 18.9 percent of original size [2021-05-01 07:22:02,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:02,042 INFO L142 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size [2021-05-01 07:22:02,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:02,064 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-05-01 07:22:02,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:22:02,086 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:02,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:02,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:02,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:02,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:02,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:02,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:02,158 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:22:02,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:22:02,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,171 INFO L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-05-01 07:22:02,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,187 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size 25 [2021-05-01 07:22:02,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,207 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.9 percent of original size 31 [2021-05-01 07:22:02,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,228 INFO L147 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size 31 [2021-05-01 07:22:02,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,269 INFO L147 QuantifierPusher]: treesize reduction 4, result has 89.7 percent of original size 35 [2021-05-01 07:22:02,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,295 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.3 percent of original size 41 [2021-05-01 07:22:02,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,324 INFO L147 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-05-01 07:22:02,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,356 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-01 07:22:02,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,391 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size 53 [2021-05-01 07:22:02,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,429 INFO L147 QuantifierPusher]: treesize reduction 8, result has 87.3 percent of original size 55 [2021-05-01 07:22:02,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 07:22:02,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:02,517 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:02,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875748645] [2021-05-01 07:22:02,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1875748645] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:02,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:02,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 07:22:02,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713693233] [2021-05-01 07:22:02,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-01 07:22:02,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:02,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-01 07:22:02,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:22:02,519 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 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) [2021-05-01 07:22:03,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:03,447 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-05-01 07:22:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-01 07:22:03,448 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 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 [2021-05-01 07:22:03,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:03,448 INFO L225 Difference]: With dead ends: 33 [2021-05-01 07:22:03,449 INFO L226 Difference]: Without dead ends: 27 [2021-05-01 07:22:03,449 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1152.0ms TimeCoverageRelationStatistics Valid=154, Invalid=1328, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 07:22:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-01 07:22:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-01 07:22:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 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) [2021-05-01 07:22:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-05-01 07:22:03,453 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2021-05-01 07:22:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:03,453 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-05-01 07:22:03,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 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) [2021-05-01 07:22:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-05-01 07:22:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-01 07:22:03,454 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:03,454 INFO L519 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:03,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-01 07:22:03,454 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:03,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:03,455 INFO L82 PathProgramCache]: Analyzing trace with hash 162483899, now seen corresponding path program 13 times [2021-05-01 07:22:03,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:03,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558977580] [2021-05-01 07:22:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:03,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:03,462 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_120 0)) InVars {main_~x~0=v_main_~x~0_120} OutVars{main_~x~0=v_main_~x~0_120} AuxVars[] AssignedVars[] [2021-05-01 07:22:03,465 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:03,466 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,468 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:03,469 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:03,470 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:03,472 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,474 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,478 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:03,480 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,482 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,484 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,485 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,487 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,488 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,489 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:03,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:03,502 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:03,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:03,537 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 07:22:03,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:03,543 INFO L142 QuantifierPusher]: treesize reduction 32, result has 62.8 percent of original size [2021-05-01 07:22:03,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 07:22:03,580 INFO L142 QuantifierPusher]: treesize reduction 59, result has 26.3 percent of original size [2021-05-01 07:22:03,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:22:03,591 INFO L142 QuantifierPusher]: treesize reduction 49, result has 15.5 percent of original size [2021-05-01 07:22:03,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:03,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:03,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:03,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:03,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:03,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:03,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,674 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:22:03,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,698 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:22:03,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,715 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.1 percent of original size 32 [2021-05-01 07:22:03,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,750 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-05-01 07:22:03,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,776 INFO L147 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size 34 [2021-05-01 07:22:03,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,800 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:22:03,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:03,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:22:03,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 07:22:03,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,939 INFO L147 QuantifierPusher]: treesize reduction 14, result has 79.4 percent of original size 54 [2021-05-01 07:22:03,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:22:04,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,034 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.1 percent of original size 66 [2021-05-01 07:22:04,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,091 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.3 percent of original size 72 [2021-05-01 07:22:04,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:04,147 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:04,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558977580] [2021-05-01 07:22:04,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1558977580] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:04,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:04,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 07:22:04,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390036232] [2021-05-01 07:22:04,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 07:22:04,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:04,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 07:22:04,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-05-01 07:22:04,148 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:05,244 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-05-01 07:22:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-01 07:22:05,245 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (3), 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 26 [2021-05-01 07:22:05,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:05,246 INFO L225 Difference]: With dead ends: 34 [2021-05-01 07:22:05,246 INFO L226 Difference]: Without dead ends: 28 [2021-05-01 07:22:05,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1359.2ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-05-01 07:22:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-01 07:22:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-05-01 07:22:05,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2021-05-01 07:22:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-05-01 07:22:05,250 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2021-05-01 07:22:05,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:05,250 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-05-01 07:22:05,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-05-01 07:22:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-01 07:22:05,251 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:05,251 INFO L519 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:05,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-01 07:22:05,251 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:05,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2027875745, now seen corresponding path program 14 times [2021-05-01 07:22:05,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:05,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229278170] [2021-05-01 07:22:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:05,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:05,257 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_136 0)) InVars {main_~x~0=v_main_~x~0_136} OutVars{main_~x~0=v_main_~x~0_136} AuxVars[] AssignedVars[] [2021-05-01 07:22:05,259 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:05,261 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,263 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,265 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,266 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,268 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,271 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,271 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,273 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:05,274 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:05,275 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:05,277 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:05,279 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,283 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,283 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:05,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:05,296 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:05,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:05,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:05,323 INFO L142 QuantifierPusher]: treesize reduction 33, result has 23.3 percent of original size [2021-05-01 07:22:05,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:05,329 INFO L142 QuantifierPusher]: treesize reduction 29, result has 61.8 percent of original size [2021-05-01 07:22:05,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:22:05,357 INFO L142 QuantifierPusher]: treesize reduction 27, result has 63.5 percent of original size [2021-05-01 07:22:05,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:22:05,400 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:22:05,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:05,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:05,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:05,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:05,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:05,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:05,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,491 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:22:05,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:22:05,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,538 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.3 percent of original size 26 [2021-05-01 07:22:05,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,560 INFO L147 QuantifierPusher]: treesize reduction 4, result has 88.2 percent of original size 30 [2021-05-01 07:22:05,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,583 INFO L147 QuantifierPusher]: treesize reduction 4, result has 89.5 percent of original size 34 [2021-05-01 07:22:05,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 07:22:05,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,639 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:22:05,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,670 INFO L147 QuantifierPusher]: treesize reduction 10, result has 82.1 percent of original size 46 [2021-05-01 07:22:05,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:22:05,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,747 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size 58 [2021-05-01 07:22:05,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,789 INFO L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-05-01 07:22:05,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,834 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.2 percent of original size 62 [2021-05-01 07:22:05,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 07:22:05,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 07:22:06,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:06,013 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:06,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229278170] [2021-05-01 07:22:06,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1229278170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:06,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:06,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 07:22:06,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360840359] [2021-05-01 07:22:06,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 07:22:06,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:06,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 07:22:06,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-05-01 07:22:06,015 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 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) [2021-05-01 07:22:07,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:07,154 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-05-01 07:22:07,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-01 07:22:07,155 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 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 [2021-05-01 07:22:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:07,155 INFO L225 Difference]: With dead ends: 35 [2021-05-01 07:22:07,155 INFO L226 Difference]: Without dead ends: 29 [2021-05-01 07:22:07,156 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1497.5ms TimeCoverageRelationStatistics Valid=169, Invalid=1637, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 07:22:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-01 07:22:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-01 07:22:07,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 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) [2021-05-01 07:22:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-05-01 07:22:07,160 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2021-05-01 07:22:07,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:07,160 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-05-01 07:22:07,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 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) [2021-05-01 07:22:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-05-01 07:22:07,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-01 07:22:07,161 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:07,161 INFO L519 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:07,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-01 07:22:07,161 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:07,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:07,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1209547973, now seen corresponding path program 15 times [2021-05-01 07:22:07,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:07,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871928789] [2021-05-01 07:22:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:07,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:07,167 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_153 0)) InVars {main_~x~0=v_main_~x~0_153} OutVars{main_~x~0=v_main_~x~0_153} AuxVars[] AssignedVars[] [2021-05-01 07:22:07,168 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:07,170 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,172 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,174 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,176 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,178 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,179 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,180 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,185 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:07,186 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:07,186 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:07,188 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,191 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,194 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:07,195 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:07,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:07,207 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:07,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:07,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:07,229 INFO L142 QuantifierPusher]: treesize reduction 21, result has 32.3 percent of original size [2021-05-01 07:22:07,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:07,235 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.9 percent of original size [2021-05-01 07:22:07,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 07:22:07,266 INFO L142 QuantifierPusher]: treesize reduction 19, result has 68.9 percent of original size [2021-05-01 07:22:07,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:07,286 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:22:07,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:07,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:07,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:07,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:07,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:07,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:07,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:07,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,380 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:22:07,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,409 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:22:07,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,428 INFO L147 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size 26 [2021-05-01 07:22:07,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,449 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.1 percent of original size 32 [2021-05-01 07:22:07,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,475 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-05-01 07:22:07,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:07,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:22:07,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,563 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.6 percent of original size 56 [2021-05-01 07:22:07,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,602 INFO L147 QuantifierPusher]: treesize reduction 16, result has 75.8 percent of original size 50 [2021-05-01 07:22:07,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:22:07,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,707 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-05-01 07:22:07,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,752 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-01 07:22:07,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,804 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.1 percent of original size 68 [2021-05-01 07:22:07,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,857 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size 70 [2021-05-01 07:22:07,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,917 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.4 percent of original size 76 [2021-05-01 07:22:07,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:07,978 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:07,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871928789] [2021-05-01 07:22:07,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [871928789] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:07,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:07,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 07:22:07,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169102521] [2021-05-01 07:22:07,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-01 07:22:07,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:07,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-01 07:22:07,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:22:07,980 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:09,304 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-05-01 07:22:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-01 07:22:09,305 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (3), 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 28 [2021-05-01 07:22:09,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:09,305 INFO L225 Difference]: With dead ends: 36 [2021-05-01 07:22:09,305 INFO L226 Difference]: Without dead ends: 30 [2021-05-01 07:22:09,306 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1670.2ms TimeCoverageRelationStatistics Valid=177, Invalid=1803, Unknown=0, NotChecked=0, Total=1980 [2021-05-01 07:22:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-01 07:22:09,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-01 07:22:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 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) [2021-05-01 07:22:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-05-01 07:22:09,311 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2021-05-01 07:22:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:09,311 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-05-01 07:22:09,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-05-01 07:22:09,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 07:22:09,312 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:09,312 INFO L519 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:09,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-01 07:22:09,313 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1611190817, now seen corresponding path program 16 times [2021-05-01 07:22:09,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:09,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623527101] [2021-05-01 07:22:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:09,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:09,321 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_171 0)) InVars {main_~x~0=v_main_~x~0_171} OutVars{main_~x~0=v_main_~x~0_171} AuxVars[] AssignedVars[] [2021-05-01 07:22:09,323 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:09,332 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,335 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:09,336 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:09,337 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:09,339 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,342 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,345 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,348 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:09,351 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,353 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,356 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,358 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,360 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,362 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,363 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:09,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:09,377 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:09,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:09,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:09,414 INFO L142 QuantifierPusher]: treesize reduction 26, result has 35.0 percent of original size [2021-05-01 07:22:09,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:09,426 INFO L142 QuantifierPusher]: treesize reduction 46, result has 54.5 percent of original size [2021-05-01 07:22:09,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 07:22:09,455 INFO L142 QuantifierPusher]: treesize reduction 49, result has 49.5 percent of original size [2021-05-01 07:22:09,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:22:09,480 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:09,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:09,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:09,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:09,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:09,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:09,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:09,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:22:09,576 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:22:09,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:22:09,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:22:09,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:09,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,638 INFO L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-05-01 07:22:09,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:22:09,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,696 INFO L147 QuantifierPusher]: treesize reduction 8, result has 82.6 percent of original size 38 [2021-05-01 07:22:09,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,730 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 44 [2021-05-01 07:22:09,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,771 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.5 percent of original size 46 [2021-05-01 07:22:09,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,812 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-01 07:22:09,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,853 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.6 percent of original size 56 [2021-05-01 07:22:09,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,903 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.9 percent of original size 62 [2021-05-01 07:22:09,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,953 INFO L147 QuantifierPusher]: treesize reduction 10, result has 86.1 percent of original size 62 [2021-05-01 07:22:10,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:10,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 07:22:10,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:10,073 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size 70 [2021-05-01 07:22:10,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:10,140 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.9 percent of original size 74 [2021-05-01 07:22:10,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:10,216 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.1 percent of original size 78 [2021-05-01 07:22:10,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:10,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:10,297 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:10,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623527101] [2021-05-01 07:22:10,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1623527101] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:10,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:10,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 07:22:10,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472714622] [2021-05-01 07:22:10,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 07:22:10,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:10,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 07:22:10,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2021-05-01 07:22:10,298 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 22 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) [2021-05-01 07:22:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:11,934 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-05-01 07:22:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-01 07:22:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 22 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 [2021-05-01 07:22:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:11,935 INFO L225 Difference]: With dead ends: 37 [2021-05-01 07:22:11,935 INFO L226 Difference]: Without dead ends: 31 [2021-05-01 07:22:11,936 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2042.3ms TimeCoverageRelationStatistics Valid=154, Invalid=2008, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 07:22:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-01 07:22:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-01 07:22:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2021-05-01 07:22:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-05-01 07:22:11,942 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2021-05-01 07:22:11,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:11,942 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-05-01 07:22:11,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 22 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) [2021-05-01 07:22:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-05-01 07:22:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-01 07:22:11,943 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:11,943 INFO L519 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:11,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-01 07:22:11,943 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:11,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1177217093, now seen corresponding path program 17 times [2021-05-01 07:22:11,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:11,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172668399] [2021-05-01 07:22:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:11,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:11,955 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_190 0)) InVars {main_~x~0=v_main_~x~0_190} OutVars{main_~x~0=v_main_~x~0_190} AuxVars[] AssignedVars[] [2021-05-01 07:22:11,957 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:11,961 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,963 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,966 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,969 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,972 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,975 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,976 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,979 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:11,980 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:11,981 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:11,984 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:11,987 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,003 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,006 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,007 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:12,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:12,022 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:12,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:12,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:12,047 INFO L142 QuantifierPusher]: treesize reduction 30, result has 18.9 percent of original size [2021-05-01 07:22:12,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:12,053 INFO L142 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size [2021-05-01 07:22:12,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:12,080 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-05-01 07:22:12,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:22:12,105 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:12,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:12,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:12,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:12,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:12,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:12,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:12,190 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:22:12,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:22:12,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:22:12,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,228 INFO L147 QuantifierPusher]: treesize reduction 6, result has 79.3 percent of original size 23 [2021-05-01 07:22:12,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,252 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-05-01 07:22:12,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,279 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.6 percent of original size 35 [2021-05-01 07:22:12,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,308 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.3 percent of original size 41 [2021-05-01 07:22:12,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,340 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.9 percent of original size 47 [2021-05-01 07:22:12,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,375 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size 53 [2021-05-01 07:22:12,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 07:22:12,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-05-01 07:22:12,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,515 INFO L147 QuantifierPusher]: treesize reduction 20, result has 73.3 percent of original size 55 [2021-05-01 07:22:12,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 07:22:12,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,626 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.3 percent of original size 63 [2021-05-01 07:22:12,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,684 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.8 percent of original size 67 [2021-05-01 07:22:12,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 07:22:12,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 07:22:12,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,888 INFO L147 QuantifierPusher]: treesize reduction 10, result has 88.8 percent of original size 79 [2021-05-01 07:22:12,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:12,962 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:12,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172668399] [2021-05-01 07:22:12,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [172668399] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:12,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:12,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 07:22:12,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052251691] [2021-05-01 07:22:12,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 07:22:12,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:12,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 07:22:12,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2021-05-01 07:22:12,964 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 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) [2021-05-01 07:22:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:14,621 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-05-01 07:22:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-01 07:22:14,622 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 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 30 [2021-05-01 07:22:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:14,622 INFO L225 Difference]: With dead ends: 38 [2021-05-01 07:22:14,622 INFO L226 Difference]: Without dead ends: 32 [2021-05-01 07:22:14,623 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2094.9ms TimeCoverageRelationStatistics Valid=194, Invalid=2158, Unknown=0, NotChecked=0, Total=2352 [2021-05-01 07:22:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-01 07:22:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-01 07:22:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 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) [2021-05-01 07:22:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-01 07:22:14,629 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2021-05-01 07:22:14,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:14,629 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-01 07:22:14,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 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) [2021-05-01 07:22:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-01 07:22:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-01 07:22:14,630 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:14,630 INFO L519 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:14,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-01 07:22:14,630 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:14,631 INFO L82 PathProgramCache]: Analyzing trace with hash -608933537, now seen corresponding path program 18 times [2021-05-01 07:22:14,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:14,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747088608] [2021-05-01 07:22:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:14,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:14,637 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_210 0)) InVars {main_~x~0=v_main_~x~0_210} OutVars{main_~x~0=v_main_~x~0_210} AuxVars[] AssignedVars[] [2021-05-01 07:22:14,639 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:14,642 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,645 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:14,647 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:14,647 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:14,650 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:14,654 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,657 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,661 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,663 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,666 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,668 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,671 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,673 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,675 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,676 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:14,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:14,691 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:14,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:14,710 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-05-01 07:22:14,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:14,716 INFO L142 QuantifierPusher]: treesize reduction 23, result has 72.6 percent of original size [2021-05-01 07:22:14,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 07:22:14,759 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.7 percent of original size [2021-05-01 07:22:14,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:14,781 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:14,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:14,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:14,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:14,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:14,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:14,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:14,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,875 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:22:14,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,901 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:22:14,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:14,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,942 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-05-01 07:22:14,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,967 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 44 [2021-05-01 07:22:14,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,995 INFO L147 QuantifierPusher]: treesize reduction 12, result has 76.0 percent of original size 38 [2021-05-01 07:22:15,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,027 INFO L147 QuantifierPusher]: treesize reduction 6, result has 87.5 percent of original size 42 [2021-05-01 07:22:15,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,062 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.5 percent of original size 46 [2021-05-01 07:22:15,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,101 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-01 07:22:15,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,144 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.0 percent of original size 54 [2021-05-01 07:22:15,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,190 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.5 percent of original size 58 [2021-05-01 07:22:15,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,242 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size 64 [2021-05-01 07:22:15,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 07:22:15,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,364 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size 70 [2021-05-01 07:22:15,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,434 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.9 percent of original size 74 [2021-05-01 07:22:15,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,507 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.9 percent of original size 78 [2021-05-01 07:22:15,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,583 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.2 percent of original size 82 [2021-05-01 07:22:15,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,681 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.5 percent of original size 86 [2021-05-01 07:22:15,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:15,772 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:15,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747088608] [2021-05-01 07:22:15,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [747088608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:15,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:15,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 07:22:15,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344396281] [2021-05-01 07:22:15,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 07:22:15,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:15,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 07:22:15,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-05-01 07:22:15,774 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 24 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) [2021-05-01 07:22:17,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:17,674 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-05-01 07:22:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-01 07:22:17,675 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 24 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 [2021-05-01 07:22:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:17,676 INFO L225 Difference]: With dead ends: 39 [2021-05-01 07:22:17,676 INFO L226 Difference]: Without dead ends: 33 [2021-05-01 07:22:17,677 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2434.3ms TimeCoverageRelationStatistics Valid=201, Invalid=2349, Unknown=0, NotChecked=0, Total=2550 [2021-05-01 07:22:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-01 07:22:17,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-01 07:22:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 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) [2021-05-01 07:22:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-05-01 07:22:17,682 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2021-05-01 07:22:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:17,682 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-05-01 07:22:17,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 24 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) [2021-05-01 07:22:17,682 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-05-01 07:22:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-01 07:22:17,683 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:17,683 INFO L519 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:17,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-01 07:22:17,683 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:17,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:17,684 INFO L82 PathProgramCache]: Analyzing trace with hash -172012485, now seen corresponding path program 19 times [2021-05-01 07:22:17,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:17,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217142171] [2021-05-01 07:22:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:17,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:17,691 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_231 0)) InVars {main_~x~0=v_main_~x~0_231} OutVars{main_~x~0=v_main_~x~0_231} AuxVars[] AssignedVars[] [2021-05-01 07:22:17,693 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:17,694 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,697 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:17,698 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:17,699 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:17,702 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,705 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,708 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,711 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:17,714 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,717 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,719 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,721 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,724 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,728 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:17,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:17,743 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:17,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:17,763 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 07:22:17,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:17,770 INFO L142 QuantifierPusher]: treesize reduction 17, result has 80.5 percent of original size [2021-05-01 07:22:17,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 07:22:17,814 INFO L142 QuantifierPusher]: treesize reduction 33, result has 38.9 percent of original size [2021-05-01 07:22:17,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:22:17,826 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:17,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:17,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:17,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:17,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:17,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:17,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:17,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:17,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,937 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:22:17,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,966 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:22:17,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,986 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:22:18,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,009 INFO L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-05-01 07:22:18,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,035 INFO L147 QuantifierPusher]: treesize reduction 4, result has 89.5 percent of original size 34 [2021-05-01 07:22:18,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,068 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:22:18,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,103 INFO L147 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size 42 [2021-05-01 07:22:18,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:22:18,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 07:22:18,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,226 INFO L147 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size 54 [2021-05-01 07:22:18,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,274 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-05-01 07:22:18,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 07:22:18,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,413 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.2 percent of original size 66 [2021-05-01 07:22:18,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,484 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.3 percent of original size 72 [2021-05-01 07:22:18,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,560 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.5 percent of original size 74 [2021-05-01 07:22:18,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,633 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.6 percent of original size 80 [2021-05-01 07:22:18,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 07:22:18,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,797 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size 86 [2021-05-01 07:22:18,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,889 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.8 percent of original size 90 [2021-05-01 07:22:18,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:18,985 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:18,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217142171] [2021-05-01 07:22:18,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [217142171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:18,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:18,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 07:22:18,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569307811] [2021-05-01 07:22:18,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 07:22:18,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:18,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 07:22:18,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2021-05-01 07:22:18,987 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:21,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:21,043 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-05-01 07:22:21,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-01 07:22:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 states have internal predecessors, (28), 2 states have call successors, (3), 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 32 [2021-05-01 07:22:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:21,044 INFO L225 Difference]: With dead ends: 40 [2021-05-01 07:22:21,044 INFO L226 Difference]: Without dead ends: 34 [2021-05-01 07:22:21,045 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2720.3ms TimeCoverageRelationStatistics Valid=210, Invalid=2546, Unknown=0, NotChecked=0, Total=2756 [2021-05-01 07:22:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-01 07:22:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-01 07:22:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 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) [2021-05-01 07:22:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-05-01 07:22:21,051 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2021-05-01 07:22:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:21,051 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-05-01 07:22:21,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-05-01 07:22:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 07:22:21,051 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:21,051 INFO L519 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:21,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-01 07:22:21,052 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:21,052 INFO L82 PathProgramCache]: Analyzing trace with hash 487638239, now seen corresponding path program 20 times [2021-05-01 07:22:21,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:21,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787424153] [2021-05-01 07:22:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:21,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:21,059 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_253 0)) InVars {main_~x~0=v_main_~x~0_253} OutVars{main_~x~0=v_main_~x~0_253} AuxVars[] AssignedVars[] [2021-05-01 07:22:21,062 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:21,065 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,068 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:21,070 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:21,070 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:21,074 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,077 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,080 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,083 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:21,086 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,089 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,091 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,094 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,100 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,101 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:21,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:21,116 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:21,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:21,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:21,135 INFO L142 QuantifierPusher]: treesize reduction 30, result has 18.9 percent of original size [2021-05-01 07:22:21,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:21,140 INFO L142 QuantifierPusher]: treesize reduction 24, result has 64.2 percent of original size [2021-05-01 07:22:21,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 07:22:21,176 INFO L142 QuantifierPusher]: treesize reduction 20, result has 59.2 percent of original size [2021-05-01 07:22:21,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:22:21,196 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:22:21,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:21,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:21,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:21,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:21,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:21,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:21,290 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:22:21,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:22:21,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,306 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:22:21,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,323 INFO L147 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size 23 [2021-05-01 07:22:21,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,343 INFO L147 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size 27 [2021-05-01 07:22:21,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,367 INFO L147 QuantifierPusher]: treesize reduction 6, result has 83.8 percent of original size 31 [2021-05-01 07:22:21,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,393 INFO L147 QuantifierPusher]: treesize reduction 6, result has 85.4 percent of original size 35 [2021-05-01 07:22:21,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 07:22:21,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:22:21,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,492 INFO L147 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size 47 [2021-05-01 07:22:21,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 07:22:21,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 07:22:21,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,632 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size 65 [2021-05-01 07:22:21,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-05-01 07:22:21,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,749 INFO L147 QuantifierPusher]: treesize reduction 12, result has 84.8 percent of original size 67 [2021-05-01 07:22:21,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-05-01 07:22:21,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,884 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.5 percent of original size 79 [2021-05-01 07:22:21,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:21,981 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.8 percent of original size 79 [2021-05-01 07:22:22,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:22,066 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.4 percent of original size 83 [2021-05-01 07:22:22,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:22,153 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.5 percent of original size 87 [2021-05-01 07:22:22,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:22,254 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.8 percent of original size 91 [2021-05-01 07:22:22,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:22,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:22,348 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:22,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787424153] [2021-05-01 07:22:22,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [787424153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:22,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:22,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 07:22:22,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992595926] [2021-05-01 07:22:22,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 07:22:22,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 07:22:22,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2021-05-01 07:22:22,350 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 26 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) [2021-05-01 07:22:24,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:24,548 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-05-01 07:22:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-01 07:22:24,549 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 26 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 [2021-05-01 07:22:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:24,549 INFO L225 Difference]: With dead ends: 41 [2021-05-01 07:22:24,549 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 07:22:24,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 2796.4ms TimeCoverageRelationStatistics Valid=217, Invalid=2753, Unknown=0, NotChecked=0, Total=2970 [2021-05-01 07:22:24,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 07:22:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-01 07:22:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 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) [2021-05-01 07:22:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-05-01 07:22:24,558 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2021-05-01 07:22:24,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:24,558 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-05-01 07:22:24,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 26 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) [2021-05-01 07:22:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-05-01 07:22:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-01 07:22:24,558 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:24,559 INFO L519 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:24,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-01 07:22:24,559 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash -538025797, now seen corresponding path program 21 times [2021-05-01 07:22:24,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:24,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714788024] [2021-05-01 07:22:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:24,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:24,565 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_276 0)) InVars {main_~x~0=v_main_~x~0_276} OutVars{main_~x~0=v_main_~x~0_276} AuxVars[] AssignedVars[] [2021-05-01 07:22:24,567 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:24,569 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,575 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:24,577 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:24,577 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:24,581 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:24,585 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,591 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,597 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,599 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,602 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,604 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,606 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,607 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:24,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:24,622 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:24,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:24,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:24,646 INFO L142 QuantifierPusher]: treesize reduction 23, result has 30.3 percent of original size [2021-05-01 07:22:24,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:24,652 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.1 percent of original size [2021-05-01 07:22:24,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:22:24,699 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.0 percent of original size [2021-05-01 07:22:24,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:24,722 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:24,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:24,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:24,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:24,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:24,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:24,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:24,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,824 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:22:24,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,852 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:22:24,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:22:24,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:22:24,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,928 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:22:24,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:24,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:25,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,002 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size 52 [2021-05-01 07:22:25,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,046 INFO L147 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size 46 [2021-05-01 07:22:25,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,092 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size 52 [2021-05-01 07:22:25,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,145 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size 58 [2021-05-01 07:22:25,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 07:22:25,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,258 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.2 percent of original size 70 [2021-05-01 07:22:25,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,323 INFO L147 QuantifierPusher]: treesize reduction 14, result has 82.5 percent of original size 66 [2021-05-01 07:22:25,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 07:22:25,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,470 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size 74 [2021-05-01 07:22:25,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 07:22:25,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 07:22:25,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,734 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 92 [2021-05-01 07:22:25,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 07:22:25,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:22:26,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:26,047 INFO L147 QuantifierPusher]: treesize reduction 16, result has 86.0 percent of original size 98 [2021-05-01 07:22:26,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:26,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:26,158 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:26,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714788024] [2021-05-01 07:22:26,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1714788024] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:26,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:26,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 07:22:26,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749623557] [2021-05-01 07:22:26,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 07:22:26,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:26,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 07:22:26,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2021-05-01 07:22:26,160 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 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) [2021-05-01 07:22:28,574 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 42 [2021-05-01 07:22:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:28,687 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-05-01 07:22:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-01 07:22:28,688 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 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 34 [2021-05-01 07:22:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:28,689 INFO L225 Difference]: With dead ends: 42 [2021-05-01 07:22:28,689 INFO L226 Difference]: Without dead ends: 36 [2021-05-01 07:22:28,690 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 3348.7ms TimeCoverageRelationStatistics Valid=225, Invalid=2967, Unknown=0, NotChecked=0, Total=3192 [2021-05-01 07:22:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-01 07:22:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-01 07:22:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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) [2021-05-01 07:22:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-05-01 07:22:28,696 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2021-05-01 07:22:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:28,696 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-05-01 07:22:28,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 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) [2021-05-01 07:22:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-05-01 07:22:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-01 07:22:28,697 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:28,697 INFO L519 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:28,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-01 07:22:28,697 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:28,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2026127455, now seen corresponding path program 22 times [2021-05-01 07:22:28,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:28,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155040851] [2021-05-01 07:22:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:28,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:28,706 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_300 0)) InVars {main_~x~0=v_main_~x~0_300} OutVars{main_~x~0=v_main_~x~0_300} AuxVars[] AssignedVars[] [2021-05-01 07:22:28,708 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:28,709 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,712 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:28,714 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:28,715 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:28,718 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,720 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,723 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,727 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:28,730 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,732 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,738 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,740 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,743 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,744 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:28,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:28,759 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:28,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:28,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:28,784 INFO L142 QuantifierPusher]: treesize reduction 27, result has 38.6 percent of original size [2021-05-01 07:22:28,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:22:28,800 INFO L142 QuantifierPusher]: treesize reduction 26, result has 59.4 percent of original size [2021-05-01 07:22:28,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:28,837 INFO L142 QuantifierPusher]: treesize reduction 20, result has 59.2 percent of original size [2021-05-01 07:22:28,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:22:28,863 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:22:28,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:28,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:28,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:28,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:28,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:28,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:28,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:28,975 INFO L142 QuantifierPusher]: treesize reduction 11, result has 72.5 percent of original size [2021-05-01 07:22:28,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:22:29,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,006 INFO L147 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-05-01 07:22:29,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,024 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:22:29,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,046 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:22:29,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:22:29,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,098 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:22:29,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,129 INFO L147 QuantifierPusher]: treesize reduction 12, result has 76.0 percent of original size 38 [2021-05-01 07:22:29,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,161 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 44 [2021-05-01 07:22:29,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,200 INFO L147 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-05-01 07:22:29,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,242 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size 52 [2021-05-01 07:22:29,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,289 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size 58 [2021-05-01 07:22:29,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,342 INFO L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-05-01 07:22:29,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,398 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.2 percent of original size 62 [2021-05-01 07:22:29,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 07:22:29,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 07:22:29,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,601 INFO L147 QuantifierPusher]: treesize reduction 10, result has 88.1 percent of original size 74 [2021-05-01 07:22:29,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,680 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.6 percent of original size 80 [2021-05-01 07:22:29,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,768 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.1 percent of original size 82 [2021-05-01 07:22:29,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,868 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.5 percent of original size 86 [2021-05-01 07:22:29,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,963 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.8 percent of original size 90 [2021-05-01 07:22:30,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:30,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 07:22:30,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:30,174 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 102 [2021-05-01 07:22:30,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:30,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:30,291 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:30,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155040851] [2021-05-01 07:22:30,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1155040851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:30,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:30,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 07:22:30,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252133683] [2021-05-01 07:22:30,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 07:22:30,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:30,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 07:22:30,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2021-05-01 07:22:30,293 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 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) [2021-05-01 07:22:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:32,732 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-05-01 07:22:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-01 07:22:32,732 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 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 [2021-05-01 07:22:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:32,733 INFO L225 Difference]: With dead ends: 43 [2021-05-01 07:22:32,733 INFO L226 Difference]: Without dead ends: 37 [2021-05-01 07:22:32,734 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3275.6ms TimeCoverageRelationStatistics Valid=190, Invalid=3232, Unknown=0, NotChecked=0, Total=3422 [2021-05-01 07:22:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-01 07:22:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-05-01 07:22:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.03125) internal successors, (33), 32 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) [2021-05-01 07:22:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-05-01 07:22:32,739 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2021-05-01 07:22:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:32,739 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-05-01 07:22:32,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 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) [2021-05-01 07:22:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-05-01 07:22:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-01 07:22:32,740 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:32,740 INFO L519 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:32,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-01 07:22:32,740 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:32,740 INFO L82 PathProgramCache]: Analyzing trace with hash -89500357, now seen corresponding path program 23 times [2021-05-01 07:22:32,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:32,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967223983] [2021-05-01 07:22:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:32,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:32,745 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_325 0)) InVars {main_~x~0=v_main_~x~0_325} OutVars{main_~x~0=v_main_~x~0_325} AuxVars[] AssignedVars[] [2021-05-01 07:22:32,749 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:32,750 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,752 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:32,753 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:32,753 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:32,755 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,757 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,759 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,761 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:32,763 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,764 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,766 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,768 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,771 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,771 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:32,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:32,784 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:32,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:32,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:32,803 INFO L142 QuantifierPusher]: treesize reduction 23, result has 30.3 percent of original size [2021-05-01 07:22:32,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:32,810 INFO L142 QuantifierPusher]: treesize reduction 44, result has 53.2 percent of original size [2021-05-01 07:22:32,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:22:32,842 INFO L142 QuantifierPusher]: treesize reduction 34, result has 58.0 percent of original size [2021-05-01 07:22:32,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:22:32,865 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:32,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:32,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:32,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:32,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:32,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:32,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:22:32,947 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:22:32,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:22:32,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,961 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:22:32,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,978 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.3 percent of original size 26 [2021-05-01 07:22:32,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:32,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:33,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,019 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-05-01 07:22:33,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,045 INFO L147 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size 38 [2021-05-01 07:22:33,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:33,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,109 INFO L147 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-05-01 07:22:33,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:22:33,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,184 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size 58 [2021-05-01 07:22:33,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,227 INFO L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-05-01 07:22:33,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,274 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size 64 [2021-05-01 07:22:33,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,326 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-05-01 07:22:33,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,393 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.3 percent of original size 72 [2021-05-01 07:22:33,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,461 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size 74 [2021-05-01 07:22:33,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,532 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.9 percent of original size 78 [2021-05-01 07:22:33,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,605 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.2 percent of original size 82 [2021-05-01 07:22:33,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,680 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.5 percent of original size 86 [2021-05-01 07:22:33,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,761 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size 90 [2021-05-01 07:22:33,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,849 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 96 [2021-05-01 07:22:33,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:33,942 INFO L147 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size 98 [2021-05-01 07:22:34,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:34,040 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.4 percent of original size 102 [2021-05-01 07:22:34,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:34,147 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 108 [2021-05-01 07:22:34,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:34,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:34,255 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:34,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967223983] [2021-05-01 07:22:34,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [967223983] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:34,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:34,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-01 07:22:34,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704866011] [2021-05-01 07:22:34,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-01 07:22:34,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:34,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-01 07:22:34,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=987, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:22:34,257 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 29 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) [2021-05-01 07:22:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:36,851 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-05-01 07:22:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-01 07:22:36,852 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 29 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 36 [2021-05-01 07:22:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:36,852 INFO L225 Difference]: With dead ends: 44 [2021-05-01 07:22:36,852 INFO L226 Difference]: Without dead ends: 38 [2021-05-01 07:22:36,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 3376.3ms TimeCoverageRelationStatistics Valid=196, Invalid=3464, Unknown=0, NotChecked=0, Total=3660 [2021-05-01 07:22:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-01 07:22:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-01 07:22:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 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) [2021-05-01 07:22:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-05-01 07:22:36,858 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2021-05-01 07:22:36,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:36,858 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-05-01 07:22:36,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 29 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) [2021-05-01 07:22:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-05-01 07:22:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-01 07:22:36,859 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:36,859 INFO L519 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:36,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-01 07:22:36,859 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:36,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1249453089, now seen corresponding path program 24 times [2021-05-01 07:22:36,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:36,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150655388] [2021-05-01 07:22:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:36,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:36,863 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_351 0)) InVars {main_~x~0=v_main_~x~0_351} OutVars{main_~x~0=v_main_~x~0_351} AuxVars[] AssignedVars[] [2021-05-01 07:22:36,865 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:36,865 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,867 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:36,868 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:36,869 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:36,871 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:36,874 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,876 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,880 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,882 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,883 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,885 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,887 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,888 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,890 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,890 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:36,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:36,905 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:36,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:36,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:36,922 INFO L142 QuantifierPusher]: treesize reduction 30, result has 18.9 percent of original size [2021-05-01 07:22:36,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:36,928 INFO L142 QuantifierPusher]: treesize reduction 24, result has 65.7 percent of original size [2021-05-01 07:22:36,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:36,955 INFO L142 QuantifierPusher]: treesize reduction 20, result has 59.2 percent of original size [2021-05-01 07:22:36,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:22:36,978 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:22:36,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:36,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:36,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:36,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:36,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:37,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:37,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:37,066 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:22:37,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:22:37,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,080 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-05-01 07:22:37,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,095 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size 25 [2021-05-01 07:22:37,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,113 INFO L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-05-01 07:22:37,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,134 INFO L147 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size 31 [2021-05-01 07:22:37,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,157 INFO L147 QuantifierPusher]: treesize reduction 4, result has 89.7 percent of original size 35 [2021-05-01 07:22:37,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 07:22:37,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,217 INFO L147 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-05-01 07:22:37,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,250 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-01 07:22:37,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,288 INFO L147 QuantifierPusher]: treesize reduction 6, result has 89.5 percent of original size 51 [2021-05-01 07:22:37,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,329 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.2 percent of original size 55 [2021-05-01 07:22:37,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 07:22:37,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,427 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.3 percent of original size 63 [2021-05-01 07:22:37,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,483 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.2 percent of original size 69 [2021-05-01 07:22:37,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,548 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.4 percent of original size 75 [2021-05-01 07:22:37,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,613 INFO L147 QuantifierPusher]: treesize reduction 10, result has 88.2 percent of original size 75 [2021-05-01 07:22:37,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,685 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.9 percent of original size 79 [2021-05-01 07:22:37,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,758 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.4 percent of original size 83 [2021-05-01 07:22:37,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,840 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.8 percent of original size 89 [2021-05-01 07:22:37,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,922 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.8 percent of original size 91 [2021-05-01 07:22:38,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 07:22:38,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,102 INFO L147 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size 99 [2021-05-01 07:22:38,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,214 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.5 percent of original size 103 [2021-05-01 07:22:38,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,319 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 109 [2021-05-01 07:22:38,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:38,430 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:38,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150655388] [2021-05-01 07:22:38,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [150655388] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:38,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:38,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-01 07:22:38,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523114034] [2021-05-01 07:22:38,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-01 07:22:38,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:38,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-01 07:22:38,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 07:22:38,432 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 30 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) [2021-05-01 07:22:40,884 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 38 [2021-05-01 07:22:41,068 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 42 [2021-05-01 07:22:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:41,177 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-05-01 07:22:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-01 07:22:41,178 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 30 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 [2021-05-01 07:22:41,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:41,179 INFO L225 Difference]: With dead ends: 45 [2021-05-01 07:22:41,179 INFO L226 Difference]: Without dead ends: 39 [2021-05-01 07:22:41,180 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 3552.1ms TimeCoverageRelationStatistics Valid=250, Invalid=3656, Unknown=0, NotChecked=0, Total=3906 [2021-05-01 07:22:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-01 07:22:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-01 07:22:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 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) [2021-05-01 07:22:41,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-05-01 07:22:41,188 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2021-05-01 07:22:41,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:41,188 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-05-01 07:22:41,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 30 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) [2021-05-01 07:22:41,188 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-05-01 07:22:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-01 07:22:41,188 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:41,189 INFO L519 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:41,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-01 07:22:41,189 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:41,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:41,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1446717883, now seen corresponding path program 25 times [2021-05-01 07:22:41,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:41,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546608573] [2021-05-01 07:22:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:41,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:41,194 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_378 0)) InVars {main_~x~0=v_main_~x~0_378} OutVars{main_~x~0=v_main_~x~0_378} AuxVars[] AssignedVars[] [2021-05-01 07:22:41,196 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:41,201 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,203 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,205 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,207 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,209 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,211 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,212 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,215 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:41,216 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:41,216 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:41,219 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,220 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,222 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,225 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:41,225 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:41,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:41,240 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:41,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:41,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:41,256 INFO L142 QuantifierPusher]: treesize reduction 24, result has 36.8 percent of original size [2021-05-01 07:22:41,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:41,268 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.1 percent of original size [2021-05-01 07:22:41,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:22:41,303 INFO L142 QuantifierPusher]: treesize reduction 26, result has 64.4 percent of original size [2021-05-01 07:22:41,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:22:41,331 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:41,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:41,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:41,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:41,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:41,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:41,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:22:41,426 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:22:41,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:22:41,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:22:41,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,460 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size 30 [2021-05-01 07:22:41,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:22:41,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:41,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,535 INFO L147 QuantifierPusher]: treesize reduction 12, result has 76.0 percent of original size 38 [2021-05-01 07:22:41,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,567 INFO L147 QuantifierPusher]: treesize reduction 4, result has 91.3 percent of original size 42 [2021-05-01 07:22:41,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:22:41,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,653 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size 54 [2021-05-01 07:22:41,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:22:41,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,748 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.1 percent of original size 66 [2021-05-01 07:22:41,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 07:22:41,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,861 INFO L147 QuantifierPusher]: treesize reduction 14, result has 82.5 percent of original size 66 [2021-05-01 07:22:41,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,924 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.6 percent of original size 70 [2021-05-01 07:22:41,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 07:22:42,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-05-01 07:22:42,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,155 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.8 percent of original size 88 [2021-05-01 07:22:42,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,243 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 94 [2021-05-01 07:22:42,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,338 INFO L147 QuantifierPusher]: treesize reduction 14, result has 86.5 percent of original size 90 [2021-05-01 07:22:42,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,440 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-05-01 07:22:42,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,548 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.1 percent of original size 98 [2021-05-01 07:22:42,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,658 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.4 percent of original size 102 [2021-05-01 07:22:42,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,778 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 108 [2021-05-01 07:22:42,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,902 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 114 [2021-05-01 07:22:43,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:43,037 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 120 [2021-05-01 07:22:43,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:43,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:43,175 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:43,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546608573] [2021-05-01 07:22:43,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1546608573] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:43,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:43,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 07:22:43,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658685578] [2021-05-01 07:22:43,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 07:22:43,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 07:22:43,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1117, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 07:22:43,177 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 31 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:45,901 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:22:46,063 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:22:46,229 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 36 [2021-05-01 07:22:46,425 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 40 [2021-05-01 07:22:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:46,584 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-05-01 07:22:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-01 07:22:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.0625) internal successors, (34), 31 states have internal predecessors, (34), 2 states have call successors, (3), 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 38 [2021-05-01 07:22:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:46,585 INFO L225 Difference]: With dead ends: 46 [2021-05-01 07:22:46,585 INFO L226 Difference]: Without dead ends: 40 [2021-05-01 07:22:46,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 4432.8ms TimeCoverageRelationStatistics Valid=208, Invalid=3952, Unknown=0, NotChecked=0, Total=4160 [2021-05-01 07:22:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-01 07:22:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-01 07:22:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 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) [2021-05-01 07:22:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-05-01 07:22:46,592 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2021-05-01 07:22:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:46,592 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-05-01 07:22:46,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 1.0625) internal successors, (34), 31 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:22:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-05-01 07:22:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 07:22:46,592 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:46,592 INFO L519 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:46,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-01 07:22:46,592 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:46,593 INFO L82 PathProgramCache]: Analyzing trace with hash -871327905, now seen corresponding path program 26 times [2021-05-01 07:22:46,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:46,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972220045] [2021-05-01 07:22:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:46,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:46,600 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_406 0)) InVars {main_~x~0=v_main_~x~0_406} OutVars{main_~x~0=v_main_~x~0_406} AuxVars[] AssignedVars[] [2021-05-01 07:22:46,601 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:46,604 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,606 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,608 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,610 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,612 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,616 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,617 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,619 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:46,620 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:46,621 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:46,623 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,625 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,627 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,630 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:46,630 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:46,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:46,646 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:46,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:46,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:46,666 INFO L142 QuantifierPusher]: treesize reduction 19, result has 50.0 percent of original size [2021-05-01 07:22:46,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:22:46,682 INFO L142 QuantifierPusher]: treesize reduction 30, result has 61.0 percent of original size [2021-05-01 07:22:46,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:22:46,733 INFO L142 QuantifierPusher]: treesize reduction 33, result has 50.7 percent of original size [2021-05-01 07:22:46,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:22:46,767 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:46,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:46,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:46,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:46,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:46,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:46,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:46,863 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:22:46,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:22:46,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,881 INFO L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-05-01 07:22:46,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:22:46,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,924 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size 27 [2021-05-01 07:22:46,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,949 INFO L147 QuantifierPusher]: treesize reduction 6, result has 83.8 percent of original size 31 [2021-05-01 07:22:46,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:22:47,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,011 INFO L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-05-01 07:22:47,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,048 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-05-01 07:22:47,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 07:22:47,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,134 INFO L147 QuantifierPusher]: treesize reduction 8, result has 86.4 percent of original size 51 [2021-05-01 07:22:47,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-05-01 07:22:47,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:22:47,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,301 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.2 percent of original size 69 [2021-05-01 07:22:47,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 07:22:47,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,440 INFO L147 QuantifierPusher]: treesize reduction 12, result has 85.5 percent of original size 71 [2021-05-01 07:22:47,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,518 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.9 percent of original size 75 [2021-05-01 07:22:47,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:22:47,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,688 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.8 percent of original size 87 [2021-05-01 07:22:47,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,780 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.6 percent of original size 87 [2021-05-01 07:22:47,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,878 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.8 percent of original size 91 [2021-05-01 07:22:47,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 07:22:48,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:48,096 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.3 percent of original size 99 [2021-05-01 07:22:48,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:48,213 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.5 percent of original size 103 [2021-05-01 07:22:48,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:48,336 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 109 [2021-05-01 07:22:48,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:48,470 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.9 percent of original size 111 [2021-05-01 07:22:48,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:48,609 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 117 [2021-05-01 07:22:48,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:48,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:48,741 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:48,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972220045] [2021-05-01 07:22:48,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [972220045] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:48,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:48,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 07:22:48,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465558445] [2021-05-01 07:22:48,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 07:22:48,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 07:22:48,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 07:22:48,743 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 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) [2021-05-01 07:22:51,759 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 38 [2021-05-01 07:22:51,959 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 42 [2021-05-01 07:22:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:52,063 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-05-01 07:22:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-01 07:22:52,064 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 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 39 [2021-05-01 07:22:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:52,064 INFO L225 Difference]: With dead ends: 47 [2021-05-01 07:22:52,064 INFO L226 Difference]: Without dead ends: 41 [2021-05-01 07:22:52,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 4511.5ms TimeCoverageRelationStatistics Valid=264, Invalid=4158, Unknown=0, NotChecked=0, Total=4422 [2021-05-01 07:22:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-01 07:22:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-01 07:22:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 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) [2021-05-01 07:22:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-05-01 07:22:52,070 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2021-05-01 07:22:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:52,070 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-05-01 07:22:52,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 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) [2021-05-01 07:22:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-05-01 07:22:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-01 07:22:52,071 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:52,071 INFO L519 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:52,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-01 07:22:52,071 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:52,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:52,071 INFO L82 PathProgramCache]: Analyzing trace with hash 283696699, now seen corresponding path program 27 times [2021-05-01 07:22:52,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:52,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605479515] [2021-05-01 07:22:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:52,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:52,075 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_435 0)) InVars {main_~x~0=v_main_~x~0_435} OutVars{main_~x~0=v_main_~x~0_435} AuxVars[] AssignedVars[] [2021-05-01 07:22:52,083 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:52,085 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,088 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,090 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,092 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,094 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,096 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,097 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,099 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:52,100 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:52,101 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:52,103 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,105 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,107 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,110 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:52,110 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:52,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:52,125 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:52,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:52,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:52,140 INFO L142 QuantifierPusher]: treesize reduction 33, result has 23.3 percent of original size [2021-05-01 07:22:52,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:52,146 INFO L142 QuantifierPusher]: treesize reduction 28, result has 62.7 percent of original size [2021-05-01 07:22:52,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:22:52,183 INFO L142 QuantifierPusher]: treesize reduction 26, result has 64.4 percent of original size [2021-05-01 07:22:52,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:22:52,207 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:22:52,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:52,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:52,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:52,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:52,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:52,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:52,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,304 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:22:52,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,332 INFO L147 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size 22 [2021-05-01 07:22:52,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,350 INFO L147 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size 26 [2021-05-01 07:22:52,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:52,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:22:52,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:22:52,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,457 INFO L147 QuantifierPusher]: treesize reduction 10, result has 80.8 percent of original size 42 [2021-05-01 07:22:52,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,494 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.0 percent of original size 46 [2021-05-01 07:22:52,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,536 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-01 07:22:52,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,578 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.0 percent of original size 54 [2021-05-01 07:22:52,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:22:52,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,673 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.2 percent of original size 62 [2021-05-01 07:22:52,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 07:22:52,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,789 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.1 percent of original size 70 [2021-05-01 07:22:52,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,853 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.5 percent of original size 74 [2021-05-01 07:22:52,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,925 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.1 percent of original size 78 [2021-05-01 07:22:53,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,001 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.2 percent of original size 82 [2021-05-01 07:22:53,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,080 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.6 percent of original size 86 [2021-05-01 07:22:53,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,166 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size 90 [2021-05-01 07:22:53,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,273 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-05-01 07:22:53,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,368 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.2 percent of original size 98 [2021-05-01 07:22:53,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:22:53,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,580 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 110 [2021-05-01 07:22:53,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,695 INFO L147 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size 110 [2021-05-01 07:22:53,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,818 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.6 percent of original size 114 [2021-05-01 07:22:53,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,949 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.2 percent of original size 118 [2021-05-01 07:22:54,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:54,090 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 124 [2021-05-01 07:22:54,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:54,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:54,230 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:54,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605479515] [2021-05-01 07:22:54,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1605479515] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:54,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:54,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-01 07:22:54,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573845639] [2021-05-01 07:22:54,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-01 07:22:54,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:54,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-01 07:22:54,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 07:22:54,231 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 33 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) [2021-05-01 07:22:56,796 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:22:56,993 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:22:57,216 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:22:57,451 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:22:57,679 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:22:57,924 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:22:58,151 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:22:58,399 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:22:58,637 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 36 [2021-05-01 07:22:58,936 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 41 [2021-05-01 07:22:59,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:59,108 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-05-01 07:22:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-01 07:22:59,109 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 33 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 40 [2021-05-01 07:22:59,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:59,110 INFO L225 Difference]: With dead ends: 48 [2021-05-01 07:22:59,110 INFO L226 Difference]: Without dead ends: 42 [2021-05-01 07:22:59,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 5790.4ms TimeCoverageRelationStatistics Valid=273, Invalid=4419, Unknown=0, NotChecked=0, Total=4692 [2021-05-01 07:22:59,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-01 07:22:59,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-01 07:22:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 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) [2021-05-01 07:22:59,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-05-01 07:22:59,117 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2021-05-01 07:22:59,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:59,117 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-05-01 07:22:59,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 33 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) [2021-05-01 07:22:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-05-01 07:22:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-01 07:22:59,117 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:59,117 INFO L519 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:59,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-01 07:22:59,118 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:59,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1729721055, now seen corresponding path program 28 times [2021-05-01 07:22:59,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:59,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529651650] [2021-05-01 07:22:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:59,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:59,127 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_465 0)) InVars {main_~x~0=v_main_~x~0_465} OutVars{main_~x~0=v_main_~x~0_465} AuxVars[] AssignedVars[] [2021-05-01 07:22:59,129 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:22:59,130 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,134 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:22:59,136 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:59,136 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:22:59,140 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,143 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,147 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,151 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:22:59,155 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,158 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,161 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,164 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,167 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,170 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,172 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:22:59,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:22:59,193 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:59,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:59,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:59,219 INFO L142 QuantifierPusher]: treesize reduction 34, result has 22.7 percent of original size [2021-05-01 07:22:59,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:59,232 INFO L142 QuantifierPusher]: treesize reduction 60, result has 48.3 percent of original size [2021-05-01 07:22:59,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:22:59,326 INFO L142 QuantifierPusher]: treesize reduction 50, result has 51.5 percent of original size [2021-05-01 07:22:59,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 07:22:59,373 INFO L142 QuantifierPusher]: treesize reduction 51, result has 15.0 percent of original size [2021-05-01 07:22:59,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:22:59,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:59,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:59,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:59,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:59,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:22:59,497 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:22:59,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:22:59,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,516 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:22:59,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,541 INFO L147 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size 26 [2021-05-01 07:22:59,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,569 INFO L147 QuantifierPusher]: treesize reduction 4, result has 88.2 percent of original size 30 [2021-05-01 07:22:59,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,603 INFO L147 QuantifierPusher]: treesize reduction 6, result has 85.0 percent of original size 34 [2021-05-01 07:22:59,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,644 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:22:59,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:59,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,765 INFO L147 QuantifierPusher]: treesize reduction 10, result has 82.1 percent of original size 46 [2021-05-01 07:22:59,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,833 INFO L147 QuantifierPusher]: treesize reduction 6, result has 89.3 percent of original size 50 [2021-05-01 07:22:59,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:22:59,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:59,973 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-05-01 07:23:00,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 07:23:00,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,119 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.2 percent of original size 70 [2021-05-01 07:23:00,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 07:23:00,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,314 INFO L147 QuantifierPusher]: treesize reduction 10, result has 88.1 percent of original size 74 [2021-05-01 07:23:00,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 07:23:00,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,535 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 86 [2021-05-01 07:23:00,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-05-01 07:23:00,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 07:23:00,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:00,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:23:01,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,069 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 110 [2021-05-01 07:23:01,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,237 INFO L147 QuantifierPusher]: treesize reduction 18, result has 85.0 percent of original size 102 [2021-05-01 07:23:01,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:23:01,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,592 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.2 percent of original size 110 [2021-05-01 07:23:01,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-05-01 07:23:01,996 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:23:01,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:02,001 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.2 percent of original size 118 [2021-05-01 07:23:02,210 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:23:02,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:02,216 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 122 [2021-05-01 07:23:02,459 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:23:02,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:02,474 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 128 [2021-05-01 07:23:02,703 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:23:02,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:02,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:02,705 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:23:02,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529651650] [2021-05-01 07:23:02,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [529651650] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:23:02,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:23:02,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-01 07:23:02,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286480894] [2021-05-01 07:23:02,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-01 07:23:02,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:23:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-01 07:23:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1327, Unknown=0, NotChecked=0, Total=1406 [2021-05-01 07:23:02,706 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 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) [2021-05-01 07:23:05,533 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:23:05,740 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:23:05,954 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:23:06,184 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:23:06,390 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:23:06,632 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:23:06,866 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:23:07,129 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:23:07,397 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:23:07,714 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:23:08,009 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:23:08,302 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:23:08,570 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 37 [2021-05-01 07:23:08,898 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 41 [2021-05-01 07:23:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:23:09,162 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-05-01 07:23:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-01 07:23:09,164 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 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 41 [2021-05-01 07:23:09,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:23:09,165 INFO L225 Difference]: With dead ends: 49 [2021-05-01 07:23:09,165 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 07:23:09,166 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 8231.7ms TimeCoverageRelationStatistics Valid=226, Invalid=4744, Unknown=0, NotChecked=0, Total=4970 [2021-05-01 07:23:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 07:23:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-01 07:23:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 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) [2021-05-01 07:23:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-05-01 07:23:09,172 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2021-05-01 07:23:09,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:23:09,172 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-05-01 07:23:09,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 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) [2021-05-01 07:23:09,172 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-05-01 07:23:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-01 07:23:09,172 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:09,172 INFO L519 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:09,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-01 07:23:09,173 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:09,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:09,173 INFO L82 PathProgramCache]: Analyzing trace with hash -688164165, now seen corresponding path program 29 times [2021-05-01 07:23:09,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:09,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698218837] [2021-05-01 07:23:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:09,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:09,182 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_496 0)) InVars {main_~x~0=v_main_~x~0_496} OutVars{main_~x~0=v_main_~x~0_496} AuxVars[] AssignedVars[] [2021-05-01 07:23:09,184 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:23:09,186 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,190 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:23:09,192 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:23:09,193 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:23:09,197 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,201 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,205 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,210 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:23:09,214 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,217 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,221 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,224 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,228 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,232 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,233 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:23:09,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:23:09,258 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:23:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:09,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:09,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:09,279 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-05-01 07:23:09,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:23:09,290 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-05-01 07:23:09,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:23:09,344 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-05-01 07:23:09,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:23:09,376 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:23:09,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:23:09,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:09,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:09,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:23:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:09,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:23:09,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:23:09,502 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-05-01 07:23:09,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:23:09,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:23:09,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,552 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.1 percent of original size 27 [2021-05-01 07:23:09,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,584 INFO L147 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size 27 [2021-05-01 07:23:09,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,624 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-05-01 07:23:09,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,669 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.1 percent of original size 39 [2021-05-01 07:23:09,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,721 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-05-01 07:23:09,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,778 INFO L147 QuantifierPusher]: treesize reduction 12, result has 78.2 percent of original size 43 [2021-05-01 07:23:09,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:23:09,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,903 INFO L147 QuantifierPusher]: treesize reduction 8, result has 86.4 percent of original size 51 [2021-05-01 07:23:09,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:09,969 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.6 percent of original size 57 [2021-05-01 07:23:10,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,044 INFO L147 QuantifierPusher]: treesize reduction 8, result has 88.1 percent of original size 59 [2021-05-01 07:23:10,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,133 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.0 percent of original size 63 [2021-05-01 07:23:10,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 07:23:10,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,344 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.9 percent of original size 71 [2021-05-01 07:23:10,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 07:23:10,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,561 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.8 percent of original size 79 [2021-05-01 07:23:10,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,694 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.4 percent of original size 83 [2021-05-01 07:23:10,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,848 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.5 percent of original size 87 [2021-05-01 07:23:10,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:10,990 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.8 percent of original size 91 [2021-05-01 07:23:11,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:11,137 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 97 [2021-05-01 07:23:11,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:11,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-05-01 07:23:11,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:11,500 INFO L147 QuantifierPusher]: treesize reduction 10, result has 91.2 percent of original size 103 [2021-05-01 07:23:11,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:11,673 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.4 percent of original size 107 [2021-05-01 07:23:11,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:11,884 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.9 percent of original size 111 [2021-05-01 07:23:12,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:12,088 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.6 percent of original size 115 [2021-05-01 07:23:12,321 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:23:12,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:12,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-05-01 07:23:12,565 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:23:12,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:12,569 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 123 [2021-05-01 07:23:12,805 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:23:12,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:12,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-05-01 07:23:13,084 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:23:13,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:13,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:13,086 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:23:13,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698218837] [2021-05-01 07:23:13,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1698218837] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:23:13,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:23:13,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-05-01 07:23:13,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505672455] [2021-05-01 07:23:13,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-01 07:23:13,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:23:13,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-01 07:23:13,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1401, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 07:23:13,088 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 35 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) [2021-05-01 07:23:16,181 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:23:16,652 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:23:16,904 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:23:17,138 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:23:17,422 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-05-01 07:23:17,663 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-05-01 07:23:17,949 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:23:18,210 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-05-01 07:23:18,518 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-05-01 07:23:18,843 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-05-01 07:23:19,186 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:23:19,518 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-01 07:23:19,820 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 37 [2021-05-01 07:23:20,234 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 41 [2021-05-01 07:23:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:23:20,602 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-05-01 07:23:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-01 07:23:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 35 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 42 [2021-05-01 07:23:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:23:20,605 INFO L225 Difference]: With dead ends: 50 [2021-05-01 07:23:20,605 INFO L226 Difference]: Without dead ends: 44 [2021-05-01 07:23:20,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 9301.3ms TimeCoverageRelationStatistics Valid=232, Invalid=5024, Unknown=0, NotChecked=0, Total=5256 [2021-05-01 07:23:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-01 07:23:20,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-01 07:23:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 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) [2021-05-01 07:23:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-05-01 07:23:20,612 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2021-05-01 07:23:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:23:20,612 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-05-01 07:23:20,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 35 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) [2021-05-01 07:23:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-05-01 07:23:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-01 07:23:20,612 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:20,612 INFO L519 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:20,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-01 07:23:20,613 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:20,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:20,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1666805343, now seen corresponding path program 30 times [2021-05-01 07:23:20,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:20,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370658230] [2021-05-01 07:23:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:20,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:20,622 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_528 0)) InVars {main_~x~0=v_main_~x~0_528} OutVars{main_~x~0=v_main_~x~0_528} AuxVars[] AssignedVars[] [2021-05-01 07:23:20,625 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:23:20,630 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,634 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,639 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,644 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,648 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,653 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,654 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,659 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:23:20,662 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:23:20,664 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:23:20,670 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:23:20,675 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,681 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,686 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,688 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:23:20,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:23:20,717 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:23:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:20,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:20,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:20,740 INFO L142 QuantifierPusher]: treesize reduction 36, result has 21.7 percent of original size [2021-05-01 07:23:20,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:20,752 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.4 percent of original size [2021-05-01 07:23:20,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:23:20,822 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.7 percent of original size [2021-05-01 07:23:20,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:23:20,861 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:23:20,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:23:20,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:20,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:20,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:23:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:20,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:23:20,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:23:21,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,029 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:23:21,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,088 INFO L147 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size 22 [2021-05-01 07:23:21,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:23:21,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,171 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.4 percent of original size 34 [2021-05-01 07:23:21,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,223 INFO L147 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size 34 [2021-05-01 07:23:21,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,281 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:23:21,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,336 INFO L147 QuantifierPusher]: treesize reduction 6, result has 87.5 percent of original size 42 [2021-05-01 07:23:21,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:23:21,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 07:23:21,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:23:21,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,648 INFO L147 QuantifierPusher]: treesize reduction 12, result has 82.9 percent of original size 58 [2021-05-01 07:23:21,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,753 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size 64 [2021-05-01 07:23:21,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,860 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.2 percent of original size 66 [2021-05-01 07:23:21,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,965 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.6 percent of original size 70 [2021-05-01 07:23:22,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,091 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.5 percent of original size 74 [2021-05-01 07:23:22,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,244 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.1 percent of original size 78 [2021-05-01 07:23:22,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,418 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 84 [2021-05-01 07:23:22,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-05-01 07:23:22,803 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:23:22,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 07:23:23,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:23,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-05-01 07:23:23,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:23,196 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 108 [2021-05-01 07:23:23,424 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:23:23,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:23,429 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 114 [2021-05-01 07:23:23,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:23,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-05-01 07:23:23,881 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:23:23,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:23,887 INFO L147 QuantifierPusher]: treesize reduction 18, result has 85.9 percent of original size 110 [2021-05-01 07:23:24,143 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:23:24,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:24,148 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 116 [2021-05-01 07:23:24,389 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:23:24,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:24,394 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 122 [2021-05-01 07:23:24,677 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:23:24,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:24,682 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 128 [2021-05-01 07:23:24,963 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:23:24,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:24,967 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 134 [2021-05-01 07:23:25,255 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:23:25,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:25,260 INFO L147 QuantifierPusher]: treesize reduction 12, result has 91.5 percent of original size 130 [2021-05-01 07:23:25,587 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:23:25,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:25,593 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 136 [2021-05-01 07:23:25,954 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:23:25,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:25,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:25,957 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:23:25,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370658230] [2021-05-01 07:23:25,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [370658230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:23:25,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:23:25,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-01 07:23:25,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081682094] [2021-05-01 07:23:25,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-01 07:23:25,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:23:25,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-01 07:23:25,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1448, Unknown=0, NotChecked=0, Total=1560 [2021-05-01 07:23:25,959 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 36 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) [2021-05-01 07:23:28,732 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:23:29,232 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:23:29,479 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:23:29,760 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:23:30,028 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:23:30,319 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:23:30,607 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:23:30,873 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:23:31,182 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:23:31,489 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:23:31,821 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:23:32,141 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:23:32,526 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:23:32,866 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:23:33,217 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:23:33,630 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:23:34,097 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:23:34,469 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 37 [2021-05-01 07:23:34,940 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 42 [2021-05-01 07:23:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:23:35,170 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-05-01 07:23:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-01 07:23:35,171 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 36 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 43 [2021-05-01 07:23:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:23:35,172 INFO L225 Difference]: With dead ends: 51 [2021-05-01 07:23:35,172 INFO L226 Difference]: Without dead ends: 45 [2021-05-01 07:23:35,173 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 11881.7ms TimeCoverageRelationStatistics Valid=297, Invalid=5253, Unknown=0, NotChecked=0, Total=5550 [2021-05-01 07:23:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-01 07:23:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-05-01 07:23:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.025) internal successors, (41), 40 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) [2021-05-01 07:23:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-05-01 07:23:35,179 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2021-05-01 07:23:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:23:35,179 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-05-01 07:23:35,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 36 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) [2021-05-01 07:23:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-05-01 07:23:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-01 07:23:35,179 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:35,179 INFO L519 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:35,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-01 07:23:35,180 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:35,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:35,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1656416059, now seen corresponding path program 31 times [2021-05-01 07:23:35,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:35,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467124653] [2021-05-01 07:23:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:35,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:35,201 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_561 0)) InVars {main_~x~0=v_main_~x~0_561} OutVars{main_~x~0=v_main_~x~0_561} AuxVars[] AssignedVars[] [2021-05-01 07:23:35,203 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:23:35,208 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,218 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,223 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,229 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,234 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,236 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,241 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:23:35,244 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:23:35,245 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:23:35,250 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,256 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,259 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,264 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:23:35,266 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:23:35,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:23:35,301 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:23:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:35,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:35,326 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-05-01 07:23:35,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:35,342 INFO L142 QuantifierPusher]: treesize reduction 17, result has 71.2 percent of original size [2021-05-01 07:23:35,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:23:35,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.0 percent of original size [2021-05-01 07:23:35,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:23:35,474 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:23:35,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:23:35,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:35,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:35,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:23:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:35,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:23:35,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:23:35,682 INFO L142 QuantifierPusher]: treesize reduction 13, result has 65.8 percent of original size [2021-05-01 07:23:35,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:23:35,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:23:35,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,756 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.1 percent of original size 32 [2021-05-01 07:23:35,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:23:35,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,852 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 44 [2021-05-01 07:23:35,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:35,927 INFO L147 QuantifierPusher]: treesize reduction 12, result has 76.0 percent of original size 38 [2021-05-01 07:23:36,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,007 INFO L147 QuantifierPusher]: treesize reduction 4, result has 91.3 percent of original size 42 [2021-05-01 07:23:36,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,090 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.5 percent of original size 46 [2021-05-01 07:23:36,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,188 INFO L147 QuantifierPusher]: treesize reduction 6, result has 89.3 percent of original size 50 [2021-05-01 07:23:36,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,293 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-05-01 07:23:36,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,398 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-05-01 07:23:36,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 07:23:36,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,626 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.2 percent of original size 70 [2021-05-01 07:23:36,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,769 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size 70 [2021-05-01 07:23:36,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:36,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 07:23:37,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:37,102 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.9 percent of original size 78 [2021-05-01 07:23:37,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:37,265 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.3 percent of original size 82 [2021-05-01 07:23:37,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:37,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 07:23:37,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:37,632 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.8 percent of original size 90 [2021-05-01 07:23:37,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:37,835 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.0 percent of original size 94 [2021-05-01 07:23:38,021 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:23:38,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:38,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:23:38,251 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:23:38,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:38,256 INFO L147 QuantifierPusher]: treesize reduction 8, result has 92.7 percent of original size 102 [2021-05-01 07:23:38,520 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:23:38,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:38,525 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.6 percent of original size 106 [2021-05-01 07:23:38,777 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:23:38,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:38,780 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 110 [2021-05-01 07:23:39,065 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:23:39,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:39,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-05-01 07:23:39,356 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:23:39,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:39,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-05-01 07:23:39,641 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:23:39,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:39,647 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 128 [2021-05-01 07:23:39,991 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:23:39,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:39,996 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 134 [2021-05-01 07:23:40,317 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:23:40,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:40,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-05-01 07:23:40,685 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:23:40,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:40,691 INFO L147 QuantifierPusher]: treesize reduction 14, result has 90.5 percent of original size 134 [2021-05-01 07:23:41,050 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:23:41,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:41,056 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 138 [2021-05-01 07:23:41,439 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:23:41,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:41,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:41,442 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:23:41,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467124653] [2021-05-01 07:23:41,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1467124653] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:23:41,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:23:41,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-01 07:23:41,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586084599] [2021-05-01 07:23:41,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-01 07:23:41,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:23:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-01 07:23:41,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1525, Unknown=0, NotChecked=0, Total=1640 [2021-05-01 07:23:41,444 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 37 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) [2021-05-01 07:23:44,610 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:23:44,798 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:23:45,368 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:23:45,560 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:23:45,770 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:23:45,997 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:23:46,182 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:23:46,395 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:23:46,639 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:23:46,871 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:23:47,082 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 36 [2021-05-01 07:23:47,367 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 40 [2021-05-01 07:23:47,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:23:47,521 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-05-01 07:23:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-01 07:23:47,522 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 37 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 44 [2021-05-01 07:23:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:23:47,522 INFO L225 Difference]: With dead ends: 52 [2021-05-01 07:23:47,522 INFO L226 Difference]: Without dead ends: 46 [2021-05-01 07:23:47,523 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 10437.6ms TimeCoverageRelationStatistics Valid=305, Invalid=5547, Unknown=0, NotChecked=0, Total=5852 [2021-05-01 07:23:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-01 07:23:47,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-01 07:23:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 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) [2021-05-01 07:23:47,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-05-01 07:23:47,528 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2021-05-01 07:23:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:23:47,528 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-05-01 07:23:47,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 37 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) [2021-05-01 07:23:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-05-01 07:23:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-01 07:23:47,529 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:47,529 INFO L519 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:47,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-01 07:23:47,529 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:47,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:47,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1334348255, now seen corresponding path program 32 times [2021-05-01 07:23:47,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:47,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804399544] [2021-05-01 07:23:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:47,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:47,535 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_595 0)) InVars {main_~x~0=v_main_~x~0_595} OutVars{main_~x~0=v_main_~x~0_595} AuxVars[] AssignedVars[] [2021-05-01 07:23:47,537 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:23:47,540 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,543 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,546 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,548 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,550 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,553 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,554 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,556 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:23:47,558 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:23:47,558 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:23:47,561 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,564 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,567 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,569 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:23:47,570 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:23:47,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:23:47,590 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:23:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:47,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:47,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:47,604 INFO L142 QuantifierPusher]: treesize reduction 30, result has 18.9 percent of original size [2021-05-01 07:23:47,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:23:47,612 INFO L142 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size [2021-05-01 07:23:47,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:23:47,649 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-05-01 07:23:47,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:23:47,676 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:23:47,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:23:47,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:47,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:47,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:47,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:23:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:47,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:23:47,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:23:47,790 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:23:47,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:23:47,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,812 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-05-01 07:23:47,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:23:47,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,870 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.6 percent of original size 35 [2021-05-01 07:23:47,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,902 INFO L147 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size 31 [2021-05-01 07:23:47,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:23:47,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:47,978 INFO L147 QuantifierPusher]: treesize reduction 6, result has 86.7 percent of original size 39 [2021-05-01 07:23:48,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,025 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-05-01 07:23:48,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-05-01 07:23:48,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,141 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.6 percent of original size 57 [2021-05-01 07:23:48,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:23:48,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,279 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.2 percent of original size 69 [2021-05-01 07:23:48,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,350 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.4 percent of original size 75 [2021-05-01 07:23:48,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,440 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.6 percent of original size 81 [2021-05-01 07:23:48,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,535 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.8 percent of original size 87 [2021-05-01 07:23:48,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,631 INFO L147 QuantifierPusher]: treesize reduction 20, result has 78.9 percent of original size 75 [2021-05-01 07:23:48,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,737 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.2 percent of original size 79 [2021-05-01 07:23:48,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,846 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 85 [2021-05-01 07:23:48,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:48,964 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.8 percent of original size 91 [2021-05-01 07:23:49,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:49,079 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.9 percent of original size 91 [2021-05-01 07:23:49,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:49,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 07:23:49,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:49,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-05-01 07:23:49,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:49,524 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 109 [2021-05-01 07:23:49,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:49,673 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 115 [2021-05-01 07:23:49,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:49,806 INFO L147 QuantifierPusher]: treesize reduction 12, result has 90.2 percent of original size 111 [2021-05-01 07:23:49,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:49,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:23:50,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:50,117 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.7 percent of original size 119 [2021-05-01 07:23:50,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:50,297 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 123 [2021-05-01 07:23:50,494 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:23:50,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:50,498 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.5 percent of original size 127 [2021-05-01 07:23:50,700 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:23:50,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:50,703 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.6 percent of original size 131 [2021-05-01 07:23:50,907 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-05-01 07:23:50,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:50,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-05-01 07:23:51,119 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-05-01 07:23:51,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:51,123 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.6 percent of original size 139 [2021-05-01 07:23:51,359 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:23:51,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:51,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:51,361 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:23:51,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804399544] [2021-05-01 07:23:51,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [804399544] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:23:51,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:23:51,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-01 07:23:51,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531437889] [2021-05-01 07:23:51,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-01 07:23:51,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:23:51,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-01 07:23:51,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2021-05-01 07:23:51,363 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 38 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) [2021-05-01 07:23:55,070 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:23:55,286 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-05-01 07:23:55,499 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-05-01 07:23:55,703 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-05-01 07:23:55,914 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:23:56,148 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-01 07:23:56,386 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-01 07:23:56,615 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-01 07:23:56,863 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-01 07:23:57,100 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 36 [2021-05-01 07:23:57,402 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 40 [2021-05-01 07:23:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:23:57,563 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-05-01 07:23:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-01 07:23:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 38 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 45 [2021-05-01 07:23:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:23:57,564 INFO L225 Difference]: With dead ends: 53 [2021-05-01 07:23:57,565 INFO L226 Difference]: Without dead ends: 47 [2021-05-01 07:23:57,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 8316.6ms TimeCoverageRelationStatistics Valid=314, Invalid=5848, Unknown=0, NotChecked=0, Total=6162 [2021-05-01 07:23:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-01 07:23:57,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-01 07:23:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 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) [2021-05-01 07:23:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-05-01 07:23:57,571 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2021-05-01 07:23:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:23:57,571 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-05-01 07:23:57,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 38 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) [2021-05-01 07:23:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-05-01 07:23:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-01 07:23:57,571 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:57,571 INFO L519 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:57,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-01 07:23:57,572 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:57,572 INFO L82 PathProgramCache]: Analyzing trace with hash -59819077, now seen corresponding path program 33 times [2021-05-01 07:23:57,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:57,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634154936] [2021-05-01 07:23:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:57,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:57,578 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_630 0)) InVars {main_~x~0=v_main_~x~0_630} OutVars{main_~x~0=v_main_~x~0_630} AuxVars[] AssignedVars[] [2021-05-01 07:23:57,579 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:23:57,582 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,585 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,591 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,593 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,595 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,596 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,599 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:23:57,601 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:23:57,601 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:23:57,604 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,607 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,609 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,612 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:23:57,613 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:23:57,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:23:57,633 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:23:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:57,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:57,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:57,647 INFO L142 QuantifierPusher]: treesize reduction 38, result has 20.8 percent of original size [2021-05-01 07:23:57,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:57,657 INFO L142 QuantifierPusher]: treesize reduction 59, result has 48.7 percent of original size [2021-05-01 07:23:57,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:23:57,717 INFO L142 QuantifierPusher]: treesize reduction 49, result has 50.0 percent of original size [2021-05-01 07:23:57,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:23:57,764 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:23:57,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:23:57,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:57,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:57,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:57,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:23:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:57,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:23:57,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:23:57,880 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:23:57,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:23:57,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,900 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:23:57,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,925 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.3 percent of original size 26 [2021-05-01 07:23:57,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:57,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:23:58,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,002 INFO L147 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size 34 [2021-05-01 07:23:58,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,050 INFO L147 QuantifierPusher]: treesize reduction 6, result has 86.4 percent of original size 38 [2021-05-01 07:23:58,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,098 INFO L147 QuantifierPusher]: treesize reduction 4, result has 91.3 percent of original size 42 [2021-05-01 07:23:58,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,154 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.5 percent of original size 46 [2021-05-01 07:23:58,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,214 INFO L147 QuantifierPusher]: treesize reduction 6, result has 89.3 percent of original size 50 [2021-05-01 07:23:58,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,269 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.6 percent of original size 56 [2021-05-01 07:23:58,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,332 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-05-01 07:23:58,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,398 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size 64 [2021-05-01 07:23:58,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,468 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.2 percent of original size 66 [2021-05-01 07:23:58,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,542 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.1 percent of original size 70 [2021-05-01 07:23:58,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,624 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.4 percent of original size 76 [2021-05-01 07:23:58,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,720 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.7 percent of original size 78 [2021-05-01 07:23:58,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,813 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.3 percent of original size 82 [2021-05-01 07:23:58,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:58,918 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.5 percent of original size 86 [2021-05-01 07:23:59,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:59,029 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 92 [2021-05-01 07:23:59,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:59,154 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 98 [2021-05-01 07:23:59,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:59,283 INFO L147 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size 98 [2021-05-01 07:23:59,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:59,417 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.2 percent of original size 102 [2021-05-01 07:23:59,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:59,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:23:59,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:59,715 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 114 [2021-05-01 07:23:59,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:59,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-05-01 07:24:00,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:00,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-05-01 07:24:00,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:00,223 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 132 [2021-05-01 07:24:00,419 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:24:00,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:00,422 INFO L147 QuantifierPusher]: treesize reduction 16, result has 88.7 percent of original size 126 [2021-05-01 07:24:00,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:00,619 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.0 percent of original size 130 [2021-05-01 07:24:00,845 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:24:00,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:00,849 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.7 percent of original size 134 [2021-05-01 07:24:01,083 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:24:01,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:01,087 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 138 [2021-05-01 07:24:01,327 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:24:01,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:01,331 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size 142 [2021-05-01 07:24:01,603 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:24:01,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:01,607 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.1 percent of original size 146 [2021-05-01 07:24:01,876 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:24:01,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:01,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:01,878 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:24:01,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634154936] [2021-05-01 07:24:01,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1634154936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:24:01,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:24:01,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-01 07:24:01,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464132586] [2021-05-01 07:24:01,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-01 07:24:01,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:24:01,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-01 07:24:01,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1717, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 07:24:01,880 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 39 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) [2021-05-01 07:24:05,396 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:24:05,624 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:24:05,856 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:24:06,099 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:24:06,341 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:24:06,582 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:24:06,834 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:24:07,081 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:24:07,344 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:24:07,644 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:24:07,945 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:24:08,281 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:24:08,575 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:24:08,879 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:24:09,160 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 37 [2021-05-01 07:24:09,487 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 41 [2021-05-01 07:24:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:24:09,777 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-05-01 07:24:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-01 07:24:09,779 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.05) internal successors, (42), 39 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 46 [2021-05-01 07:24:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:24:09,779 INFO L225 Difference]: With dead ends: 54 [2021-05-01 07:24:09,779 INFO L226 Difference]: Without dead ends: 48 [2021-05-01 07:24:09,780 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 10095.9ms TimeCoverageRelationStatistics Valid=256, Invalid=6224, Unknown=0, NotChecked=0, Total=6480 [2021-05-01 07:24:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-01 07:24:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-01 07:24:09,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 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) [2021-05-01 07:24:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-05-01 07:24:09,786 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2021-05-01 07:24:09,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:24:09,786 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-05-01 07:24:09,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 40 states have (on average 1.05) internal successors, (42), 39 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) [2021-05-01 07:24:09,786 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-05-01 07:24:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 07:24:09,786 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:24:09,786 INFO L519 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:24:09,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-01 07:24:09,786 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:24:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:24:09,787 INFO L82 PathProgramCache]: Analyzing trace with hash -329333409, now seen corresponding path program 34 times [2021-05-01 07:24:09,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:24:09,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895543177] [2021-05-01 07:24:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:24:09,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:09,794 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_666 0)) InVars {main_~x~0=v_main_~x~0_666} OutVars{main_~x~0=v_main_~x~0_666} AuxVars[] AssignedVars[] [2021-05-01 07:24:09,796 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:24:09,800 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,804 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,807 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,810 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,813 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,817 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,818 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,822 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:24:09,823 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:24:09,824 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:24:09,829 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:24:09,833 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,836 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,840 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,841 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:24:09,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:24:09,867 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:24:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:24:09,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:09,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:09,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:09,889 INFO L142 QuantifierPusher]: treesize reduction 23, result has 30.3 percent of original size [2021-05-01 07:24:09,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:24:09,902 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.1 percent of original size [2021-05-01 07:24:09,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:24:10,002 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.0 percent of original size [2021-05-01 07:24:10,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:24:10,054 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:24:10,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:24:10,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:10,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:10,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:10,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:24:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:24:10,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:24:10,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:24:10,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,258 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:24:10,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,309 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:24:10,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:24:10,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,378 INFO L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-05-01 07:24:10,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:24:10,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,478 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-05-01 07:24:10,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,531 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:24:10,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,595 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size 54 [2021-05-01 07:24:10,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:24:10,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,747 INFO L147 QuantifierPusher]: treesize reduction 16, result has 77.1 percent of original size 54 [2021-05-01 07:24:10,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:24:10,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:10,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-05-01 07:24:11,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:11,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 07:24:11,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:11,119 INFO L147 QuantifierPusher]: treesize reduction 10, result has 87.5 percent of original size 70 [2021-05-01 07:24:11,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:11,235 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.4 percent of original size 76 [2021-05-01 07:24:11,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:11,355 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.6 percent of original size 82 [2021-05-01 07:24:11,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:11,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 07:24:11,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:11,625 INFO L147 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size 86 [2021-05-01 07:24:11,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:11,789 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 92 [2021-05-01 07:24:11,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:11,948 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 98 [2021-05-01 07:24:12,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:12,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:24:12,317 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:24:12,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:12,321 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 110 [2021-05-01 07:24:12,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:12,507 INFO L147 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size 106 [2021-05-01 07:24:12,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:12,692 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 110 [2021-05-01 07:24:12,899 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:24:12,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:12,902 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 116 [2021-05-01 07:24:13,106 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:24:13,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:13,110 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.2 percent of original size 118 [2021-05-01 07:24:13,329 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:24:13,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:13,332 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 122 [2021-05-01 07:24:13,558 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:24:13,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:13,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-05-01 07:24:13,852 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:24:13,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:13,856 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.2 percent of original size 130 [2021-05-01 07:24:14,128 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:24:14,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:14,132 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 136 [2021-05-01 07:24:14,382 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:24:14,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:14,386 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 138 [2021-05-01 07:24:14,660 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:24:14,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:14,664 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 144 [2021-05-01 07:24:14,997 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:24:15,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:15,003 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.1 percent of original size 146 [2021-05-01 07:24:15,328 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:24:15,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:15,333 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size 150 [2021-05-01 07:24:15,701 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:24:15,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:15,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:15,704 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:24:15,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895543177] [2021-05-01 07:24:15,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [895543177] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:24:15,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:24:15,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-01 07:24:15,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486366094] [2021-05-01 07:24:15,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-01 07:24:15,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:24:15,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-01 07:24:15,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1768, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 07:24:15,705 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 40 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:24:18,544 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:24:18,811 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:24:19,102 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:24:19,405 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:24:19,692 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:24:19,955 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:24:20,214 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:24:20,489 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:24:20,759 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:24:21,033 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:24:21,331 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:24:21,624 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:24:21,945 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:24:22,250 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:24:22,554 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:24:22,874 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:24:23,216 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:24:23,515 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:24:23,816 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:24:24,141 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:24:24,464 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:24:24,749 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 36 [2021-05-01 07:24:25,052 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 41 [2021-05-01 07:24:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:24:25,263 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-05-01 07:24:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-01 07:24:25,264 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 40 states have internal predecessors, (43), 2 states have call successors, (3), 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 47 [2021-05-01 07:24:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:24:25,265 INFO L225 Difference]: With dead ends: 55 [2021-05-01 07:24:25,265 INFO L226 Difference]: Without dead ends: 49 [2021-05-01 07:24:25,265 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 12737.6ms TimeCoverageRelationStatistics Valid=329, Invalid=6477, Unknown=0, NotChecked=0, Total=6806 [2021-05-01 07:24:25,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-01 07:24:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-05-01 07:24:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 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) [2021-05-01 07:24:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-05-01 07:24:25,271 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2021-05-01 07:24:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:24:25,271 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-05-01 07:24:25,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 40 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:24:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-05-01 07:24:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-01 07:24:25,271 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:24:25,271 INFO L519 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:24:25,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-01 07:24:25,271 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:24:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:24:25,272 INFO L82 PathProgramCache]: Analyzing trace with hash -94343109, now seen corresponding path program 35 times [2021-05-01 07:24:25,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:24:25,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543264022] [2021-05-01 07:24:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:24:25,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:25,279 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_703 0)) InVars {main_~x~0=v_main_~x~0_703} OutVars{main_~x~0=v_main_~x~0_703} AuxVars[] AssignedVars[] [2021-05-01 07:24:25,281 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:24:25,284 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,287 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,289 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,292 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,294 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,298 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,298 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,301 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:24:25,303 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:24:25,304 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:24:25,307 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,309 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,312 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,315 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:24:25,316 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:24:25,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:24:25,342 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:24:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:24:25,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:25,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:25,355 INFO L142 QuantifierPusher]: treesize reduction 38, result has 20.8 percent of original size [2021-05-01 07:24:25,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:24:25,366 INFO L142 QuantifierPusher]: treesize reduction 59, result has 48.7 percent of original size [2021-05-01 07:24:25,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:24:25,428 INFO L142 QuantifierPusher]: treesize reduction 49, result has 50.0 percent of original size [2021-05-01 07:24:25,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:24:25,470 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:24:25,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:24:25,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:25,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:25,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:24:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:24:25,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:24:25,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:24:25,602 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:24:25,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:24:25,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,625 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:24:25,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,652 INFO L147 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size 26 [2021-05-01 07:24:25,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,683 INFO L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-05-01 07:24:25,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,718 INFO L147 QuantifierPusher]: treesize reduction 6, result has 85.0 percent of original size 34 [2021-05-01 07:24:25,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,760 INFO L147 QuantifierPusher]: treesize reduction 4, result has 90.5 percent of original size 38 [2021-05-01 07:24:25,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:24:25,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,858 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.2 percent of original size 50 [2021-05-01 07:24:25,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,917 INFO L147 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size 50 [2021-05-01 07:24:25,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:25,990 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.6 percent of original size 56 [2021-05-01 07:24:26,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,063 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-05-01 07:24:26,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,138 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.2 percent of original size 62 [2021-05-01 07:24:26,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,218 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.3 percent of original size 66 [2021-05-01 07:24:26,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,307 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.6 percent of original size 70 [2021-05-01 07:24:26,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,406 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.9 percent of original size 74 [2021-05-01 07:24:26,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,514 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.1 percent of original size 78 [2021-05-01 07:24:26,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,631 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 84 [2021-05-01 07:24:26,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,750 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.5 percent of original size 86 [2021-05-01 07:24:26,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:26,884 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.8 percent of original size 90 [2021-05-01 07:24:27,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:27,029 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-05-01 07:24:27,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:27,170 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.1 percent of original size 98 [2021-05-01 07:24:27,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:27,332 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.2 percent of original size 102 [2021-05-01 07:24:27,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:27,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:24:27,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:27,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-05-01 07:24:27,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:27,843 INFO L147 QuantifierPusher]: treesize reduction 10, result has 91.9 percent of original size 114 [2021-05-01 07:24:28,042 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:24:28,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:28,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-05-01 07:24:28,248 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:24:28,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:28,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-05-01 07:24:28,468 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:24:28,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:28,472 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 132 [2021-05-01 07:24:28,681 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:24:28,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:28,685 INFO L147 QuantifierPusher]: treesize reduction 12, result has 91.5 percent of original size 130 [2021-05-01 07:24:28,916 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:24:28,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:28,920 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 136 [2021-05-01 07:24:29,183 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:24:29,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:29,187 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 138 [2021-05-01 07:24:29,459 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:24:29,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:29,463 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 144 [2021-05-01 07:24:29,769 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:24:29,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:29,773 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.8 percent of original size 146 [2021-05-01 07:24:30,062 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:24:30,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:30,066 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 152 [2021-05-01 07:24:30,404 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:24:30,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:30,408 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 158 [2021-05-01 07:24:30,729 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:24:30,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:30,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:30,731 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:24:30,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543264022] [2021-05-01 07:24:30,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1543264022] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:24:30,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:24:30,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-05-01 07:24:30,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303164108] [2021-05-01 07:24:30,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-01 07:24:30,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:24:30,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-01 07:24:30,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1887, Unknown=0, NotChecked=0, Total=1980 [2021-05-01 07:24:30,732 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 41 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) [2021-05-01 07:24:33,650 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:24:34,106 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:24:34,346 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:24:34,599 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:24:34,842 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:24:35,111 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:24:35,370 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:24:35,648 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:24:35,940 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:24:36,242 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:24:36,545 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:24:36,836 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:24:37,155 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:24:37,498 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:24:37,842 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:24:38,207 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:24:38,559 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:24:38,912 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:24:39,295 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:24:39,708 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-05-01 07:24:40,073 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 37 [2021-05-01 07:24:40,497 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 41 [2021-05-01 07:24:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:24:40,856 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-05-01 07:24:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-01 07:24:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 41 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 48 [2021-05-01 07:24:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:24:40,859 INFO L225 Difference]: With dead ends: 56 [2021-05-01 07:24:40,859 INFO L226 Difference]: Without dead ends: 50 [2021-05-01 07:24:40,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 12877.2ms TimeCoverageRelationStatistics Valid=268, Invalid=6872, Unknown=0, NotChecked=0, Total=7140 [2021-05-01 07:24:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-01 07:24:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-01 07:24:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 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) [2021-05-01 07:24:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-05-01 07:24:40,865 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2021-05-01 07:24:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:24:40,865 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-05-01 07:24:40,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 41 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) [2021-05-01 07:24:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-05-01 07:24:40,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-01 07:24:40,866 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:24:40,866 INFO L519 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:24:40,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-01 07:24:40,866 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:24:40,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:24:40,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1399578401, now seen corresponding path program 36 times [2021-05-01 07:24:40,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:24:40,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922275211] [2021-05-01 07:24:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:24:40,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:40,879 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_741 0)) InVars {main_~x~0=v_main_~x~0_741} OutVars{main_~x~0=v_main_~x~0_741} AuxVars[] AssignedVars[] [2021-05-01 07:24:40,881 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:24:40,882 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,886 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:24:40,889 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:24:40,890 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:24:40,894 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,900 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,904 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,910 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:24:40,914 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,918 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,922 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,925 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,928 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,932 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,933 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:24:40,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:24:40,966 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:24:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:24:40,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:40,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:40,979 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 07:24:40,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:24:40,996 INFO L142 QuantifierPusher]: treesize reduction 17, result has 81.3 percent of original size [2021-05-01 07:24:40,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 07:24:41,080 INFO L142 QuantifierPusher]: treesize reduction 33, result has 38.9 percent of original size [2021-05-01 07:24:41,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:24:41,109 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:24:41,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:24:41,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:41,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:24:41,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:41,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:24:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:24:41,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:24:41,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:24:41,335 INFO L142 QuantifierPusher]: treesize reduction 13, result has 65.8 percent of original size [2021-05-01 07:24:41,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:24:41,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,371 INFO L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-05-01 07:24:41,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:24:41,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:24:41,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,499 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:24:41,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:24:41,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,620 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size 52 [2021-05-01 07:24:41,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 07:24:41,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,774 INFO L147 QuantifierPusher]: treesize reduction 18, result has 73.5 percent of original size 50 [2021-05-01 07:24:41,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,856 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.0 percent of original size 54 [2021-05-01 07:24:41,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:41,946 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.8 percent of original size 60 [2021-05-01 07:24:42,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:42,044 INFO L147 QuantifierPusher]: treesize reduction 8, result has 88.6 percent of original size 62 [2021-05-01 07:24:42,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:42,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 07:24:42,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:42,268 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.1 percent of original size 70 [2021-05-01 07:24:42,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:42,400 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.9 percent of original size 74 [2021-05-01 07:24:42,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:42,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 07:24:42,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:42,704 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 86 [2021-05-01 07:24:42,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:42,854 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 92 [2021-05-01 07:24:43,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:43,025 INFO L147 QuantifierPusher]: treesize reduction 12, result has 88.2 percent of original size 90 [2021-05-01 07:24:43,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:43,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 07:24:43,400 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:24:43,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:43,404 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.2 percent of original size 98 [2021-05-01 07:24:43,600 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:24:43,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:43,603 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.4 percent of original size 102 [2021-05-01 07:24:43,806 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:24:43,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:43,809 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.4 percent of original size 106 [2021-05-01 07:24:44,025 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:24:44,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:44,029 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 112 [2021-05-01 07:24:44,270 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:24:44,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:44,279 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 118 [2021-05-01 07:24:44,521 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:24:44,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:44,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-05-01 07:24:44,802 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:24:44,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:44,806 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 130 [2021-05-01 07:24:45,079 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:24:45,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:45,083 INFO L147 QuantifierPusher]: treesize reduction 12, result has 91.3 percent of original size 126 [2021-05-01 07:24:45,367 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:24:45,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:45,371 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 132 [2021-05-01 07:24:45,678 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:24:45,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:45,682 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.7 percent of original size 134 [2021-05-01 07:24:45,991 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:24:45,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:45,996 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 140 [2021-05-01 07:24:46,293 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:24:46,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:46,297 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 146 [2021-05-01 07:24:46,656 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:24:46,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:46,660 INFO L147 QuantifierPusher]: treesize reduction 10, result has 93.6 percent of original size 146 [2021-05-01 07:24:47,014 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:24:47,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:47,018 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 152 [2021-05-01 07:24:47,416 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:24:47,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:47,420 INFO L147 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size 154 [2021-05-01 07:24:47,776 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:24:47,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:47,780 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 160 [2021-05-01 07:24:48,190 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:24:48,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:24:48,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:24:48,193 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:24:48,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922275211] [2021-05-01 07:24:48,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [922275211] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:24:48,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:24:48,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-01 07:24:48,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777993081] [2021-05-01 07:24:48,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-01 07:24:48,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:24:48,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-01 07:24:48,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2021-05-01 07:24:48,194 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 42 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) [2021-05-01 07:24:51,396 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:24:51,662 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:24:51,938 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:24:52,246 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:24:52,535 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:24:52,828 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:24:53,111 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:24:53,415 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:24:53,717 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:24:54,022 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:24:54,340 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:24:54,669 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:24:55,028 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:24:55,377 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:24:55,734 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:24:56,125 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:24:56,520 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:24:56,872 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:24:57,294 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:24:57,681 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:24:58,169 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:24:58,632 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-05-01 07:24:59,135 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-05-01 07:24:59,531 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 36 [2021-05-01 07:25:00,034 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 40 [2021-05-01 07:25:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:25:00,389 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-05-01 07:25:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-01 07:25:00,395 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 42 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 49 [2021-05-01 07:25:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:25:00,396 INFO L225 Difference]: With dead ends: 57 [2021-05-01 07:25:00,396 INFO L226 Difference]: Without dead ends: 51 [2021-05-01 07:25:00,396 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 16073.8ms TimeCoverageRelationStatistics Valid=346, Invalid=7136, Unknown=0, NotChecked=0, Total=7482 [2021-05-01 07:25:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-01 07:25:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-05-01 07:25:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 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) [2021-05-01 07:25:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-05-01 07:25:00,402 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2021-05-01 07:25:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:25:00,402 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-05-01 07:25:00,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 42 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) [2021-05-01 07:25:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-05-01 07:25:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-01 07:25:00,403 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:25:00,403 INFO L519 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:25:00,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-01 07:25:00,403 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:25:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:25:00,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1087800507, now seen corresponding path program 37 times [2021-05-01 07:25:00,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:25:00,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932502164] [2021-05-01 07:25:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:25:00,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:00,414 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_780 0)) InVars {main_~x~0=v_main_~x~0_780} OutVars{main_~x~0=v_main_~x~0_780} AuxVars[] AssignedVars[] [2021-05-01 07:25:00,417 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:25:00,424 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,429 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,434 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,440 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,449 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,454 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,456 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,461 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:25:00,465 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:25:00,466 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:25:00,472 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,481 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,487 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:25:00,489 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:25:00,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:25:00,544 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:25:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:25:00,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:00,559 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 07:25:00,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:25:00,579 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.3 percent of original size [2021-05-01 07:25:00,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-05-01 07:25:00,662 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:25:00,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:25:00,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-05-01 07:25:00,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:25:00,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:00,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:00,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:25:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:25:00,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:25:00,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:25:00,933 INFO L142 QuantifierPusher]: treesize reduction 13, result has 65.8 percent of original size [2021-05-01 07:25:00,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:25:00,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:00,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:25:01,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,017 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.3 percent of original size 26 [2021-05-01 07:25:01,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,074 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.1 percent of original size 32 [2021-05-01 07:25:01,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:25:01,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,212 INFO L147 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size 38 [2021-05-01 07:25:01,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:25:01,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,386 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.2 percent of original size 50 [2021-05-01 07:25:01,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,491 INFO L147 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size 50 [2021-05-01 07:25:01,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,592 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-05-01 07:25:01,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,699 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-05-01 07:25:01,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 07:25:01,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:01,932 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.2 percent of original size 70 [2021-05-01 07:25:02,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:02,067 INFO L147 QuantifierPusher]: treesize reduction 10, result has 87.5 percent of original size 70 [2021-05-01 07:25:02,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:02,221 INFO L147 QuantifierPusher]: treesize reduction 4, result has 94.9 percent of original size 74 [2021-05-01 07:25:02,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:02,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 07:25:02,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:02,566 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.1 percent of original size 82 [2021-05-01 07:25:02,743 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:25:02,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:02,747 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.8 percent of original size 88 [2021-05-01 07:25:02,947 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:25:02,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:02,951 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 94 [2021-05-01 07:25:03,173 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:25:03,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:03,177 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 100 [2021-05-01 07:25:03,395 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:25:03,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:03,399 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 106 [2021-05-01 07:25:03,666 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:25:03,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:03,670 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 112 [2021-05-01 07:25:03,920 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:25:03,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:03,924 INFO L147 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size 106 [2021-05-01 07:25:04,167 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:25:04,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:04,172 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 112 [2021-05-01 07:25:04,431 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:25:04,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:04,435 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.4 percent of original size 114 [2021-05-01 07:25:04,728 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:25:04,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:04,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-05-01 07:25:05,020 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:25:05,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:05,024 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.8 percent of original size 122 [2021-05-01 07:25:05,328 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:25:05,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:05,332 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.5 percent of original size 126 [2021-05-01 07:25:05,631 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:25:05,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:05,638 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.6 percent of original size 130 [2021-05-01 07:25:05,982 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:25:05,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:05,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-05-01 07:25:06,346 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:25:06,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:06,351 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 138 [2021-05-01 07:25:06,724 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:25:06,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:06,728 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.9 percent of original size 142 [2021-05-01 07:25:07,065 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:25:07,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:07,069 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size 146 [2021-05-01 07:25:07,441 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:25:07,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:07,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-05-01 07:25:07,903 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:25:07,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:07,908 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 158 [2021-05-01 07:25:08,339 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:25:08,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:08,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-05-01 07:25:08,771 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:25:08,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:08,775 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.2 percent of original size 162 [2021-05-01 07:25:09,192 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:25:09,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:09,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:09,195 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:25:09,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932502164] [2021-05-01 07:25:09,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [932502164] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:25:09,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:25:09,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-05-01 07:25:09,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848215473] [2021-05-01 07:25:09,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-01 07:25:09,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:25:09,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-01 07:25:09,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 07:25:09,196 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 43 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) [2021-05-01 07:25:12,261 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:25:12,522 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:25:12,796 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:25:13,089 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:25:13,415 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:25:13,734 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:25:14,068 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:25:14,387 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:25:14,728 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:25:15,076 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:25:15,448 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:25:15,832 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:25:16,247 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:25:16,715 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:25:17,187 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:25:17,618 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:25:18,053 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:25:18,623 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:25:19,145 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:25:19,683 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:25:20,154 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:25:20,646 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:25:21,168 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:25:21,711 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-05-01 07:25:22,229 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-05-01 07:25:22,782 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-05-01 07:25:23,233 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 38 [2021-05-01 07:25:23,777 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 42 [2021-05-01 07:25:24,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:25:24,152 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-05-01 07:25:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-01 07:25:24,154 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 43 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 50 [2021-05-01 07:25:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:25:24,155 INFO L225 Difference]: With dead ends: 58 [2021-05-01 07:25:24,155 INFO L226 Difference]: Without dead ends: 52 [2021-05-01 07:25:24,155 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 19574.7ms TimeCoverageRelationStatistics Valid=354, Invalid=7478, Unknown=0, NotChecked=0, Total=7832 [2021-05-01 07:25:24,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-01 07:25:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-01 07:25:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 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) [2021-05-01 07:25:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-05-01 07:25:24,161 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2021-05-01 07:25:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:25:24,162 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-05-01 07:25:24,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 43 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) [2021-05-01 07:25:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-05-01 07:25:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-01 07:25:24,162 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:25:24,162 INFO L519 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:25:24,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-01 07:25:24,162 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:25:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:25:24,162 INFO L82 PathProgramCache]: Analyzing trace with hash 887135327, now seen corresponding path program 38 times [2021-05-01 07:25:24,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:25:24,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370140571] [2021-05-01 07:25:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:25:24,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:24,173 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_820 0)) InVars {main_~x~0=v_main_~x~0_820} OutVars{main_~x~0=v_main_~x~0_820} AuxVars[] AssignedVars[] [2021-05-01 07:25:24,175 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:25:24,181 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,186 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,191 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,195 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,201 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,205 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,206 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,211 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:25:24,214 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:25:24,215 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:25:24,222 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:25:24,228 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,233 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,240 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,241 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:25:24,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:25:24,290 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:25:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:25:24,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:24,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:24,305 INFO L142 QuantifierPusher]: treesize reduction 26, result has 21.2 percent of original size [2021-05-01 07:25:24,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:25:24,322 INFO L142 QuantifierPusher]: treesize reduction 23, result has 62.3 percent of original size [2021-05-01 07:25:24,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:25:24,447 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2021-05-01 07:25:24,449 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-05-01 07:25:24,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:25:24,528 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:25:24,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:25:24,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:24,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:24,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:25:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:25:24,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:25:24,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:25:24,798 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-05-01 07:25:24,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:25:24,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,844 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-05-01 07:25:24,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,894 INFO L147 QuantifierPusher]: treesize reduction 6, result has 79.3 percent of original size 23 [2021-05-01 07:25:24,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:24,953 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size 27 [2021-05-01 07:25:25,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,020 INFO L147 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size 31 [2021-05-01 07:25:25,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:25:25,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 07:25:25,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,285 INFO L147 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size 43 [2021-05-01 07:25:25,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,391 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-01 07:25:25,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 07:25:25,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,645 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.2 percent of original size 55 [2021-05-01 07:25:25,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 07:25:25,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:25,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 07:25:26,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:26,131 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.3 percent of original size 73 [2021-05-01 07:25:26,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:26,305 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.5 percent of original size 79 [2021-05-01 07:25:26,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:26,475 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 85 [2021-05-01 07:25:26,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:26,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 07:25:26,870 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-05-01 07:25:26,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:26,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-05-01 07:25:27,081 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-05-01 07:25:27,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:27,085 INFO L147 QuantifierPusher]: treesize reduction 20, result has 81.3 percent of original size 87 [2021-05-01 07:25:27,298 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-05-01 07:25:27,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:27,302 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.8 percent of original size 91 [2021-05-01 07:25:27,547 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-01 07:25:27,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:27,551 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 97 [2021-05-01 07:25:27,787 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-01 07:25:27,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:27,791 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.3 percent of original size 99 [2021-05-01 07:25:28,031 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 07:25:28,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:28,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-05-01 07:25:28,278 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-05-01 07:25:28,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:28,282 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.0 percent of original size 107 [2021-05-01 07:25:28,588 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-05-01 07:25:28,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:28,593 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.9 percent of original size 111 [2021-05-01 07:25:28,915 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:25:28,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:28,919 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.0 percent of original size 115 [2021-05-01 07:25:29,229 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:25:29,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:29,233 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.2 percent of original size 119 [2021-05-01 07:25:29,549 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:25:29,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:29,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-05-01 07:25:29,876 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:25:29,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:29,880 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.5 percent of original size 127 [2021-05-01 07:25:30,206 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:25:30,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:30,211 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 133 [2021-05-01 07:25:30,568 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-05-01 07:25:30,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:30,573 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 139 [2021-05-01 07:25:30,913 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-05-01 07:25:30,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:30,918 INFO L147 QuantifierPusher]: treesize reduction 10, result has 93.3 percent of original size 139 [2021-05-01 07:25:31,295 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:25:31,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:31,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-05-01 07:25:31,681 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-05-01 07:25:31,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:31,686 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 151 [2021-05-01 07:25:32,205 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-05-01 07:25:32,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:32,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-05-01 07:25:32,712 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-05-01 07:25:32,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:32,717 INFO L147 QuantifierPusher]: treesize reduction 12, result has 92.8 percent of original size 155 [2021-05-01 07:25:33,280 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:25:33,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:33,287 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size 159 [2021-05-01 07:25:33,826 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-01 07:25:33,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:33,832 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size 163 [2021-05-01 07:25:34,330 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-01 07:25:34,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:34,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:34,334 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:25:34,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370140571] [2021-05-01 07:25:34,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [370140571] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:25:34,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:25:34,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-01 07:25:34,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914832138] [2021-05-01 07:25:34,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-01 07:25:34,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:25:34,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-01 07:25:34,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2157, Unknown=0, NotChecked=0, Total=2256 [2021-05-01 07:25:34,335 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:25:37,219 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-05-01 07:25:37,542 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-05-01 07:25:37,882 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-05-01 07:25:38,223 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-01 07:25:38,526 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-01 07:25:38,845 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 07:25:39,154 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-05-01 07:25:39,474 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-05-01 07:25:39,816 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:25:40,178 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:25:40,575 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:25:40,954 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:25:41,332 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:25:41,731 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-05-01 07:25:42,107 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-05-01 07:25:42,566 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:25:43,006 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-05-01 07:25:43,453 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-05-01 07:25:43,893 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-05-01 07:25:44,315 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:25:44,799 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-01 07:25:45,287 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-01 07:25:45,739 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-01 07:25:46,309 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-01 07:25:46,808 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-05-01 07:25:47,355 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-01 07:25:47,886 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-05-01 07:25:48,484 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-05-01 07:25:48,978 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-05-01 07:25:49,532 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-05-01 07:25:50,034 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 37 [2021-05-01 07:25:50,596 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 41 [2021-05-01 07:25:51,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:25:51,162 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-05-01 07:25:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-01 07:25:51,165 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 2 states have call successors, (3), 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 [2021-05-01 07:25:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:25:51,165 INFO L225 Difference]: With dead ends: 59 [2021-05-01 07:25:51,166 INFO L226 Difference]: Without dead ends: 53 [2021-05-01 07:25:51,166 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 22352.5ms TimeCoverageRelationStatistics Valid=286, Invalid=7904, Unknown=0, NotChecked=0, Total=8190 [2021-05-01 07:25:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-01 07:25:51,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-05-01 07:25:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 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) [2021-05-01 07:25:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-05-01 07:25:51,172 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2021-05-01 07:25:51,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:25:51,173 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-05-01 07:25:51,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:25:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-05-01 07:25:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-01 07:25:51,173 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:25:51,173 INFO L519 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:25:51,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-01 07:25:51,173 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:25:51,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:25:51,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1038517957, now seen corresponding path program 39 times [2021-05-01 07:25:51,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:25:51,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522636883] [2021-05-01 07:25:51,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:25:51,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:51,185 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_861 0)) InVars {main_~x~0=v_main_~x~0_861} OutVars{main_~x~0=v_main_~x~0_861} AuxVars[] AssignedVars[] [2021-05-01 07:25:51,187 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:25:51,188 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,194 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:25:51,199 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:25:51,200 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:25:51,207 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:25:51,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,218 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,224 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,229 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,234 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,238 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,244 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,248 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,253 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,254 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:25:51,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:25:51,304 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:25:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:25:51,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:51,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:51,320 INFO L142 QuantifierPusher]: treesize reduction 23, result has 30.3 percent of original size [2021-05-01 07:25:51,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:25:51,343 INFO L142 QuantifierPusher]: treesize reduction 44, result has 53.2 percent of original size [2021-05-01 07:25:51,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:25:51,492 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2021-05-01 07:25:51,495 INFO L142 QuantifierPusher]: treesize reduction 34, result has 58.0 percent of original size [2021-05-01 07:25:51,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:25:51,583 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:25:51,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:25:51,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:51,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:25:51,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:25:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:25:51,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:25:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:25:51,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:25:51,872 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:25:51,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:25:51,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,917 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size 24 [2021-05-01 07:25:51,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:51,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:25:52,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,033 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:25:52,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:25:52,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,174 INFO L147 QuantifierPusher]: treesize reduction 14, result has 73.1 percent of original size 38 [2021-05-01 07:25:52,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,264 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 44 [2021-05-01 07:25:52,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:25:52,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,496 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.6 percent of original size 56 [2021-05-01 07:25:52,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,610 INFO L147 QuantifierPusher]: treesize reduction 12, result has 81.8 percent of original size 54 [2021-05-01 07:25:52,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,747 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.5 percent of original size 58 [2021-05-01 07:25:52,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:52,893 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size 64 [2021-05-01 07:25:53,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:53,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 07:25:53,218 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 07:25:53,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:53,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 07:25:53,419 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-01 07:25:53,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:53,423 INFO L147 QuantifierPusher]: treesize reduction 10, result has 88.1 percent of original size 74 [2021-05-01 07:25:53,630 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:25:53,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:53,634 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.1 percent of original size 78 [2021-05-01 07:25:53,864 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-05-01 07:25:53,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:53,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-05-01 07:25:54,085 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:25:54,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:54,089 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size 86 [2021-05-01 07:25:54,329 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:25:54,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:54,334 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 92 [2021-05-01 07:25:54,610 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:25:54,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:54,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 07:25:54,896 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:25:54,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:54,901 INFO L147 QuantifierPusher]: treesize reduction 10, result has 90.7 percent of original size 98 [2021-05-01 07:25:55,199 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:25:55,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:55,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:25:55,518 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:25:55,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:55,530 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.6 percent of original size 106 [2021-05-01 07:25:55,834 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:25:55,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:55,838 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 110 [2021-05-01 07:25:56,237 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:25:56,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:56,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-05-01 07:25:56,613 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:25:56,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:56,618 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.2 percent of original size 118 [2021-05-01 07:25:57,052 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:25:57,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:57,057 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 122 [2021-05-01 07:25:57,444 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:25:57,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:57,449 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 128 [2021-05-01 07:25:57,841 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:25:57,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:57,846 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.6 percent of original size 130 [2021-05-01 07:25:58,254 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:25:58,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:58,259 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.7 percent of original size 134 [2021-05-01 07:25:58,718 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:25:58,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:58,723 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 140 [2021-05-01 07:25:59,141 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:25:59,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:59,146 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.9 percent of original size 142 [2021-05-01 07:25:59,572 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:25:59,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:25:59,577 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 148 [2021-05-01 07:26:00,078 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:26:00,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:00,084 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size 150 [2021-05-01 07:26:00,671 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:26:00,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:00,677 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 156 [2021-05-01 07:26:01,243 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:26:01,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:01,248 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.3 percent of original size 158 [2021-05-01 07:26:01,900 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:26:01,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:01,905 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.6 percent of original size 162 [2021-05-01 07:26:02,509 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:26:02,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:02,515 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.6 percent of original size 166 [2021-05-01 07:26:03,133 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:26:03,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:03,139 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.6 percent of original size 170 [2021-05-01 07:26:03,861 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:26:03,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:03,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:26:03,866 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:26:03,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522636883] [2021-05-01 07:26:03,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1522636883] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:26:03,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:26:03,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-05-01 07:26:03,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415582334] [2021-05-01 07:26:03,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-01 07:26:03,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:26:03,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-01 07:26:03,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2251, Unknown=0, NotChecked=0, Total=2352 [2021-05-01 07:26:03,867 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 45 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) [2021-05-01 07:26:06,454 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:26:06,764 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-05-01 07:26:07,124 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:26:07,485 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:26:07,885 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:26:08,286 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:26:08,659 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:26:09,096 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:26:09,538 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:26:09,993 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:26:10,459 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:26:10,960 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:26:11,402 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:26:11,884 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:26:12,446 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:26:12,990 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:26:13,493 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:26:14,163 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:26:14,714 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:26:15,305 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:26:15,908 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:26:16,562 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:26:17,233 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:26:17,871 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:26:18,427 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:26:19,049 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:26:19,745 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:26:20,589 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:26:21,307 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-05-01 07:26:22,173 WARN L205 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-05-01 07:26:23,009 WARN L205 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-05-01 07:26:23,851 WARN L205 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-05-01 07:26:24,767 WARN L205 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-05-01 07:26:25,412 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 37 [2021-05-01 07:26:26,153 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 41 [2021-05-01 07:26:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:26:26,921 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-05-01 07:26:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-01 07:26:26,925 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 45 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 52 [2021-05-01 07:26:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:26:26,926 INFO L225 Difference]: With dead ends: 60 [2021-05-01 07:26:26,926 INFO L226 Difference]: Without dead ends: 54 [2021-05-01 07:26:26,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 29322.1ms TimeCoverageRelationStatistics Valid=292, Invalid=8264, Unknown=0, NotChecked=0, Total=8556 [2021-05-01 07:26:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-01 07:26:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-01 07:26:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 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) [2021-05-01 07:26:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-05-01 07:26:26,933 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2021-05-01 07:26:26,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:26:26,933 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-05-01 07:26:26,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 45 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) [2021-05-01 07:26:26,933 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-05-01 07:26:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-01 07:26:26,933 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:26:26,933 INFO L519 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:26:26,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-01 07:26:26,933 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:26:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:26:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash -604227617, now seen corresponding path program 40 times [2021-05-01 07:26:26,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:26:26,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964983533] [2021-05-01 07:26:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:26:26,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:26,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:26:26,944 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_903 0)) InVars {main_~x~0=v_main_~x~0_903} OutVars{main_~x~0=v_main_~x~0_903} AuxVars[] AssignedVars[] [2021-05-01 07:26:26,946 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:26:26,948 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:26,954 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:26:26,959 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:26:26,960 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:26:26,967 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:26,974 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:26,979 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:26,987 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:26:26,993 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,000 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,005 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,011 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,016 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,022 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,023 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:26:27,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:26:27,093 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:26:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:26:27,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:26:27,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:26:27,112 INFO L142 QuantifierPusher]: treesize reduction 30, result has 43.4 percent of original size [2021-05-01 07:26:27,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:26:27,177 INFO L142 QuantifierPusher]: treesize reduction 32, result has 53.6 percent of original size [2021-05-01 07:26:27,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:26:27,355 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-05-01 07:26:27,360 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-05-01 07:26:27,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:26:27,490 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2021-05-01 07:26:27,494 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:26:27,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:26:27,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:26:27,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:26:27,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:26:27,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:26:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:26:27,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:26:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:26:27,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:26:27,779 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-05-01 07:26:27,866 INFO L142 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-05-01 07:26:27,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:26:27,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:26:27,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:27,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:26:28,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 07:26:28,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,117 INFO L147 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size 36 [2021-05-01 07:26:28,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,204 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-05-01 07:26:28,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,297 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.0 percent of original size 44 [2021-05-01 07:26:28,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:26:28,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,539 INFO L147 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size 52 [2021-05-01 07:26:28,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,667 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.3 percent of original size 56 [2021-05-01 07:26:28,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,819 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.9 percent of original size 62 [2021-05-01 07:26:28,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:28,987 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.4 percent of original size 64 [2021-05-01 07:26:29,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:29,157 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.2 percent of original size 70 [2021-05-01 07:26:29,344 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-01 07:26:29,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:29,349 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.3 percent of original size 72 [2021-05-01 07:26:29,561 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-05-01 07:26:29,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:29,569 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.7 percent of original size 76 [2021-05-01 07:26:29,781 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-05-01 07:26:29,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:29,786 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.2 percent of original size 80 [2021-05-01 07:26:30,012 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-05-01 07:26:30,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:30,018 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size 84 [2021-05-01 07:26:30,274 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-05-01 07:26:30,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:30,279 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size 88 [2021-05-01 07:26:30,521 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:26:30,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:30,526 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.9 percent of original size 92 [2021-05-01 07:26:30,785 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-01 07:26:30,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:30,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 07:26:31,069 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-05-01 07:26:31,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:31,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:26:31,363 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-05-01 07:26:31,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:31,369 INFO L147 QuantifierPusher]: treesize reduction 8, result has 92.9 percent of original size 104 [2021-05-01 07:26:31,657 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-05-01 07:26:31,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:31,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-05-01 07:26:31,971 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-05-01 07:26:31,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:31,976 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 116 [2021-05-01 07:26:32,388 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-01 07:26:32,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:32,393 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 122 [2021-05-01 07:26:32,809 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-05-01 07:26:32,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:32,816 INFO L147 QuantifierPusher]: treesize reduction 12, result has 90.9 percent of original size 120 [2021-05-01 07:26:33,283 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-05-01 07:26:33,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:33,290 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.4 percent of original size 124 [2021-05-01 07:26:33,727 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-05-01 07:26:33,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:33,733 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 130 [2021-05-01 07:26:34,150 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-05-01 07:26:34,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:34,156 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.3 percent of original size 132 [2021-05-01 07:26:34,706 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-05-01 07:26:34,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:34,712 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.1 percent of original size 136 [2021-05-01 07:26:35,239 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-05-01 07:26:35,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:35,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-05-01 07:26:35,742 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-05-01 07:26:35,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:35,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-05-01 07:26:36,374 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-05-01 07:26:36,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:36,380 INFO L147 QuantifierPusher]: treesize reduction 10, result has 93.7 percent of original size 148 [2021-05-01 07:26:36,892 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-05-01 07:26:36,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:36,899 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 154 [2021-05-01 07:26:37,588 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-05-01 07:26:37,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:37,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-05-01 07:26:38,304 WARN L205 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-05-01 07:26:38,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:38,311 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.1 percent of original size 160 [2021-05-01 07:26:39,029 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-05-01 07:26:39,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:39,036 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 166 [2021-05-01 07:26:39,641 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-05-01 07:26:39,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:39,649 INFO L147 QuantifierPusher]: treesize reduction 8, result has 95.5 percent of original size 168 [2021-05-01 07:26:40,348 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-05-01 07:26:40,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:40,355 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 174 [2021-05-01 07:26:41,042 WARN L205 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-05-01 07:26:41,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:41,049 INFO L147 QuantifierPusher]: treesize reduction 8, result has 95.7 percent of original size 176 [2021-05-01 07:26:42,047 WARN L205 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-05-01 07:26:42,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:26:42,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:26:42,052 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:26:42,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964983533] [2021-05-01 07:26:42,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [964983533] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:26:42,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:26:42,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-01 07:26:42,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79834272] [2021-05-01 07:26:42,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-01 07:26:42,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:26:42,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-01 07:26:42,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2347, Unknown=0, NotChecked=0, Total=2450 [2021-05-01 07:26:42,053 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 46 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) [2021-05-01 07:26:42,674 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-01 07:26:44,583 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-05-01 07:26:44,950 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-05-01 07:26:45,317 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-05-01 07:26:45,706 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-05-01 07:26:46,092 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:26:46,495 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-01 07:26:46,912 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-05-01 07:26:47,417 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-05-01 07:26:47,841 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-05-01 07:26:48,312 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-05-01 07:26:48,809 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-01 07:26:49,287 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-05-01 07:26:49,740 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-05-01 07:26:50,257 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-05-01 07:26:50,742 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-05-01 07:26:51,252 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-05-01 07:26:51,798 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-05-01 07:26:52,339 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-05-01 07:26:53,041 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-05-01 07:26:53,663 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-05-01 07:26:54,363 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-05-01 07:26:55,029 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-05-01 07:26:55,621 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-05-01 07:26:56,368 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-05-01 07:26:57,124 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-05-01 07:26:57,769 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-05-01 07:26:58,506 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-05-01 07:26:59,181 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-05-01 07:27:00,060 WARN L205 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-05-01 07:27:00,916 WARN L205 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-05-01 07:27:01,798 WARN L205 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-05-01 07:27:02,552 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-05-01 07:27:03,537 WARN L205 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-05-01 07:27:04,608 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-05-01 07:27:05,616 WARN L205 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-05-01 07:27:06,410 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 37 [2021-05-01 07:27:07,305 WARN L205 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 41 [2021-05-01 07:27:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:27:08,172 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-05-01 07:27:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-01 07:27:08,177 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 46 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 53 [2021-05-01 07:27:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:27:08,177 INFO L225 Difference]: With dead ends: 61 [2021-05-01 07:27:08,178 INFO L226 Difference]: Without dead ends: 55 [2021-05-01 07:27:08,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 33483.3ms TimeCoverageRelationStatistics Valid=298, Invalid=8632, Unknown=0, NotChecked=0, Total=8930 [2021-05-01 07:27:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-01 07:27:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-05-01 07:27:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.02) internal successors, (51), 50 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) [2021-05-01 07:27:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-05-01 07:27:08,185 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2021-05-01 07:27:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:27:08,186 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-05-01 07:27:08,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 46 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) [2021-05-01 07:27:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-05-01 07:27:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-01 07:27:08,186 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:27:08,186 INFO L519 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:27:08,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-01 07:27:08,186 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:27:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:27:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash -26128965, now seen corresponding path program 41 times [2021-05-01 07:27:08,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:27:08,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000465470] [2021-05-01 07:27:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:27:08,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:27:08,199 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_946 0)) InVars {main_~x~0=v_main_~x~0_946} OutVars{main_~x~0=v_main_~x~0_946} AuxVars[] AssignedVars[] [2021-05-01 07:27:08,203 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:27:08,211 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,219 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,226 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,233 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,240 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,246 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,248 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,254 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:27:08,260 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:27:08,261 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:27:08,270 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,278 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,286 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,295 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:27:08,297 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:27:08,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:27:08,370 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:27:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:27:08,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:27:08,385 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-05-01 07:27:08,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:27:08,413 INFO L142 QuantifierPusher]: treesize reduction 38, result has 54.2 percent of original size [2021-05-01 07:27:08,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-05-01 07:27:08,574 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-05-01 07:27:08,578 INFO L142 QuantifierPusher]: treesize reduction 33, result has 38.9 percent of original size [2021-05-01 07:27:08,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:27:08,631 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:27:08,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:27:08,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:27:08,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:27:08,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:27:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:27:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:27:08,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:27:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:27:08,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:08,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:27:08,950 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2021-05-01 07:27:09,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:09,068 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:27:09,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:09,218 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:27:09,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:09,297 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.3 percent of original size 26 [2021-05-01 07:27:09,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:09,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:27:09,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:09,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:27:09,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:09,622 INFO L147 QuantifierPusher]: treesize reduction 8, result has 82.6 percent of original size 38 [2021-05-01 07:27:09,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:09,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:27:09,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:09,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:27:10,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:10,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:27:10,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:10,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-05-01 07:27:10,512 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-01 07:27:10,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:10,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 07:27:10,717 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 07:27:10,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:10,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 07:27:10,942 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-01 07:27:10,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:10,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 07:27:11,186 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-05-01 07:27:11,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:11,191 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 86 [2021-05-01 07:27:11,485 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:27:11,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:11,490 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 92 [2021-05-01 07:27:11,768 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-05-01 07:27:11,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:11,774 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 98 [2021-05-01 07:27:12,089 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-05-01 07:27:12,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:12,095 INFO L147 QuantifierPusher]: treesize reduction 24, result has 77.4 percent of original size 82 [2021-05-01 07:27:12,423 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:27:12,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:12,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-05-01 07:27:12,796 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:27:12,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:12,802 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 94 [2021-05-01 07:27:13,179 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:27:13,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:13,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:27:13,586 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:27:13,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:13,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:27:14,033 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:27:14,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:14,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-05-01 07:27:14,482 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:27:14,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:14,488 INFO L147 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size 106 [2021-05-01 07:27:14,915 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:27:14,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:14,921 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 112 [2021-05-01 07:27:15,432 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:27:15,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:15,438 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.4 percent of original size 114 [2021-05-01 07:27:15,992 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:27:15,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:15,998 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.2 percent of original size 118 [2021-05-01 07:27:16,594 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:27:16,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:16,599 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 122 [2021-05-01 07:27:17,113 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:27:17,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:17,119 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.9 percent of original size 126 [2021-05-01 07:27:17,686 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:27:17,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:17,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-05-01 07:27:18,313 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:27:18,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:18,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-05-01 07:27:19,004 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:27:19,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:19,010 INFO L147 QuantifierPusher]: treesize reduction 10, result has 93.2 percent of original size 138 [2021-05-01 07:27:19,587 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:27:19,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:19,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-05-01 07:27:20,392 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:27:20,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:20,399 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.8 percent of original size 146 [2021-05-01 07:27:21,107 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:27:21,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:21,114 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size 150 [2021-05-01 07:27:21,859 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:27:21,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:21,866 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size 154 [2021-05-01 07:27:22,696 WARN L205 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:27:22,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:22,704 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 160 [2021-05-01 07:27:23,443 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:27:23,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:23,451 INFO L147 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size 162 [2021-05-01 07:27:24,290 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:27:24,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:24,297 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.5 percent of original size 166 [2021-05-01 07:27:25,087 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:27:25,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:25,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-05-01 07:27:26,011 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:27:26,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:26,018 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 178 [2021-05-01 07:27:27,222 WARN L205 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:27:27,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:27,230 INFO L147 QuantifierPusher]: treesize reduction 8, result has 95.7 percent of original size 178 [2021-05-01 07:27:28,187 WARN L205 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:27:28,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:27:28,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:27:28,192 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:27:28,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000465470] [2021-05-01 07:27:28,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1000465470] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:27:28,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:27:28,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-05-01 07:27:28,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663470735] [2021-05-01 07:27:28,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-01 07:27:28,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:27:28,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-01 07:27:28,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2021-05-01 07:27:28,193 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 47 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) [2021-05-01 07:27:28,882 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:27:29,583 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-01 07:27:30,420 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-01 07:27:30,799 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 07:27:31,198 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-01 07:27:31,722 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:27:32,137 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-05-01 07:27:32,689 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:27:33,201 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:27:33,748 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:27:34,341 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-05-01 07:27:34,900 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 07:27:35,504 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:27:36,082 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-01 07:27:36,814 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:27:37,423 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:27:38,072 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:27:38,687 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:27:39,360 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:27:40,101 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:27:40,891 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:27:41,707 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:27:42,680 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:27:43,681 WARN L205 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:27:44,694 WARN L205 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:27:45,599 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:27:46,585 WARN L205 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:27:47,597 WARN L205 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:27:48,807 WARN L205 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:27:49,987 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:27:50,985 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:27:51,848 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:27:53,064 WARN L205 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:27:54,152 WARN L205 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-05-01 07:27:55,361 WARN L205 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-05-01 07:27:56,568 WARN L205 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-05-01 07:27:57,719 WARN L205 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-05-01 07:27:58,818 WARN L205 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-05-01 07:27:59,882 WARN L205 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-05-01 07:28:01,268 WARN L205 SmtUtils]: Spent 962.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-05-01 07:28:02,150 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 37 [2021-05-01 07:28:03,230 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 42 [2021-05-01 07:28:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:28:03,980 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-05-01 07:28:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-01 07:28:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 47 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 54 [2021-05-01 07:28:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:28:03,987 INFO L225 Difference]: With dead ends: 62 [2021-05-01 07:28:03,987 INFO L226 Difference]: Without dead ends: 56 [2021-05-01 07:28:03,987 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 45871.8ms TimeCoverageRelationStatistics Valid=386, Invalid=8926, Unknown=0, NotChecked=0, Total=9312 [2021-05-01 07:28:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-01 07:28:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-01 07:28:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 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) [2021-05-01 07:28:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-05-01 07:28:03,994 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2021-05-01 07:28:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:28:03,994 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-05-01 07:28:03,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 47 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) [2021-05-01 07:28:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-05-01 07:28:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 07:28:03,995 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:28:03,995 INFO L519 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:28:03,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-01 07:28:03,995 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:28:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:28:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 715060063, now seen corresponding path program 42 times [2021-05-01 07:28:03,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:28:03,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209899116] [2021-05-01 07:28:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:28:04,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:28:04,018 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_990 0)) InVars {main_~x~0=v_main_~x~0_990} OutVars{main_~x~0=v_main_~x~0_990} AuxVars[] AssignedVars[] [2021-05-01 07:28:04,021 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:28:04,029 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,038 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,047 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,056 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,065 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,073 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,075 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,084 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:28:04,092 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:28:04,094 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:28:04,106 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:28:04,117 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,129 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,139 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,141 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:28:04,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:28:04,234 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:28:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:28:04,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:04,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:04,259 INFO L142 QuantifierPusher]: treesize reduction 31, result has 18.4 percent of original size [2021-05-01 07:28:04,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:28:04,289 INFO L142 QuantifierPusher]: treesize reduction 31, result has 56.9 percent of original size [2021-05-01 07:28:04,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 07:28:04,460 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-05-01 07:28:04,464 INFO L142 QuantifierPusher]: treesize reduction 22, result has 56.9 percent of original size [2021-05-01 07:28:04,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:28:04,601 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2021-05-01 07:28:04,605 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:28:04,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:28:04,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:28:04,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:28:04,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:28:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:28:04,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:28:04,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:04,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:28:04,991 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2021-05-01 07:28:05,119 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-05-01 07:28:05,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:28:05,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:05,203 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-05-01 07:28:05,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:05,301 INFO L147 QuantifierPusher]: treesize reduction 6, result has 79.3 percent of original size 23 [2021-05-01 07:28:05,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:05,433 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-05-01 07:28:05,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:05,584 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:28:05,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:05,744 INFO L147 QuantifierPusher]: treesize reduction 6, result has 85.4 percent of original size 35 [2021-05-01 07:28:05,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:05,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 07:28:06,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,119 INFO L147 QuantifierPusher]: treesize reduction 8, result has 84.3 percent of original size 43 [2021-05-01 07:28:06,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:28:06,552 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 07:28:06,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,560 INFO L147 QuantifierPusher]: treesize reduction 8, result has 86.4 percent of original size 51 [2021-05-01 07:28:06,812 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:28:06,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,820 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-01 07:28:07,116 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-01 07:28:07,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:07,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-05-01 07:28:07,418 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:28:07,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:07,425 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.1 percent of original size 67 [2021-05-01 07:28:07,739 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-01 07:28:07,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:07,745 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.3 percent of original size 73 [2021-05-01 07:28:08,081 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-05-01 07:28:08,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:08,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 07:28:08,416 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-01 07:28:08,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:08,430 INFO L147 QuantifierPusher]: treesize reduction 14, result has 84.3 percent of original size 75 [2021-05-01 07:28:08,811 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-05-01 07:28:08,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:08,818 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.2 percent of original size 79 [2021-05-01 07:28:09,261 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-05-01 07:28:09,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:09,269 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size 83 [2021-05-01 07:28:09,701 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-05-01 07:28:09,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:09,708 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.8 percent of original size 89 [2021-05-01 07:28:10,167 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-05-01 07:28:10,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:10,174 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.9 percent of original size 91 [2021-05-01 07:28:10,647 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-01 07:28:10,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:10,654 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 97 [2021-05-01 07:28:11,119 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-01 07:28:11,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:11,126 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 103 [2021-05-01 07:28:11,630 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 07:28:11,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:11,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-05-01 07:28:12,137 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-05-01 07:28:12,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:12,145 INFO L147 QuantifierPusher]: treesize reduction 12, result has 89.9 percent of original size 107 [2021-05-01 07:28:12,755 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-05-01 07:28:12,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:12,762 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.5 percent of original size 111 [2021-05-01 07:28:13,284 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:28:13,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:13,291 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.0 percent of original size 115 [2021-05-01 07:28:13,877 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:28:13,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:13,885 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.7 percent of original size 119 [2021-05-01 07:28:14,448 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:28:14,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:14,454 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 125 [2021-05-01 07:28:15,010 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:28:15,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:15,018 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.1 percent of original size 127 [2021-05-01 07:28:15,723 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:28:15,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:15,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-05-01 07:28:16,477 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-05-01 07:28:16,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:16,486 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.7 percent of original size 135 [2021-05-01 07:28:17,292 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-05-01 07:28:17,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:17,300 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.9 percent of original size 139 [2021-05-01 07:28:17,979 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:28:17,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:17,987 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size 143 [2021-05-01 07:28:18,735 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-05-01 07:28:18,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:18,743 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 149 [2021-05-01 07:28:19,625 WARN L205 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-05-01 07:28:19,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:19,646 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 155 [2021-05-01 07:28:20,525 WARN L205 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-05-01 07:28:20,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:20,533 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 161 [2021-05-01 07:28:21,437 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:28:21,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:21,444 INFO L147 QuantifierPusher]: treesize reduction 12, result has 93.0 percent of original size 159 [2021-05-01 07:28:22,185 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-01 07:28:22,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:22,193 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.6 percent of original size 163 [2021-05-01 07:28:23,067 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-01 07:28:23,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:23,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-05-01 07:28:23,978 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-01 07:28:23,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:23,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-05-01 07:28:25,169 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-01 07:28:25,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:25,179 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 181 [2021-05-01 07:28:26,074 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-05-01 07:28:26,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:26,083 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.7 percent of original size 179 [2021-05-01 07:28:27,256 WARN L205 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-01 07:28:27,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:27,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:27,263 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:28:27,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209899116] [2021-05-01 07:28:27,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1209899116] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:28:27,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:28:27,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-01 07:28:27,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359356508] [2021-05-01 07:28:27,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-01 07:28:27,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:28:27,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-01 07:28:27,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2021-05-01 07:28:27,264 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 48 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) [2021-05-01 07:28:28,282 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:28:28,789 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 07:28:29,302 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:28:29,838 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-01 07:28:30,406 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:28:30,954 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-01 07:28:31,544 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-05-01 07:28:32,143 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-01 07:28:32,769 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-05-01 07:28:33,413 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-05-01 07:28:34,062 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-05-01 07:28:34,758 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-05-01 07:28:35,422 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-01 07:28:36,124 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-01 07:28:36,808 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 07:28:37,474 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-05-01 07:28:38,209 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-05-01 07:28:38,941 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:28:39,692 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:28:40,460 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:28:41,280 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:28:42,059 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:28:42,880 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-05-01 07:28:43,676 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-05-01 07:28:44,589 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:28:45,470 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-05-01 07:28:46,370 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-05-01 07:28:47,295 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-05-01 07:28:48,164 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:28:49,171 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-01 07:28:50,288 WARN L205 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-01 07:28:51,417 WARN L205 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-01 07:28:52,376 WARN L205 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-01 07:28:53,426 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-05-01 07:28:54,701 WARN L205 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-01 07:28:55,888 WARN L205 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-05-01 07:28:57,013 WARN L205 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-05-01 07:28:58,035 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-05-01 07:28:59,128 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-05-01 07:29:00,383 WARN L205 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2021-05-01 07:29:01,725 WARN L205 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-05-01 07:29:02,921 WARN L205 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-05-01 07:29:04,124 WARN L205 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-05-01 07:29:05,398 WARN L205 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 38 [2021-05-01 07:29:06,811 WARN L205 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 42 [2021-05-01 07:29:07,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:29:07,742 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-05-01 07:29:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-01 07:29:07,749 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 48 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 55 [2021-05-01 07:29:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:29:07,750 INFO L225 Difference]: With dead ends: 63 [2021-05-01 07:29:07,750 INFO L226 Difference]: Without dead ends: 57 [2021-05-01 07:29:07,750 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 52649.4ms TimeCoverageRelationStatistics Valid=394, Invalid=9308, Unknown=0, NotChecked=0, Total=9702 [2021-05-01 07:29:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-01 07:29:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-05-01 07:29:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 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) [2021-05-01 07:29:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-05-01 07:29:07,759 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2021-05-01 07:29:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:29:07,760 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-05-01 07:29:07,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 48 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) [2021-05-01 07:29:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-05-01 07:29:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-01 07:29:07,761 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:29:07,761 INFO L519 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:29:07,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-01 07:29:07,761 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:29:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:29:07,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2077883845, now seen corresponding path program 43 times [2021-05-01 07:29:07,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:29:07,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765483684] [2021-05-01 07:29:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:29:07,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:29:07,779 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_1035 0)) InVars {main_~x~0=v_main_~x~0_1035} OutVars{main_~x~0=v_main_~x~0_1035} AuxVars[] AssignedVars[] [2021-05-01 07:29:07,782 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:29:07,793 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,802 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,812 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,821 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,830 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,839 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,842 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,851 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:29:07,859 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:29:07,861 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:29:07,875 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:29:07,889 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,916 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:07,918 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:29:08,019 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-05-01 07:29:08,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:08,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:29:08,026 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:29:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:29:08,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:08,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:29:08,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:08,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:29:08,061 INFO L142 QuantifierPusher]: treesize reduction 33, result has 23.3 percent of original size [2021-05-01 07:29:08,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:29:08,103 INFO L142 QuantifierPusher]: treesize reduction 28, result has 62.7 percent of original size [2021-05-01 07:29:08,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:29:08,388 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-05-01 07:29:08,392 INFO L142 QuantifierPusher]: treesize reduction 26, result has 64.4 percent of original size [2021-05-01 07:29:08,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:29:08,548 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2021-05-01 07:29:08,553 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:29:08,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:29:08,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:08,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:29:08,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:08,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:29:08,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:08,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:29:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:29:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:29:08,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:08,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:29:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:29:08,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:08,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:29:09,003 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2021-05-01 07:29:09,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:09,174 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-05-01 07:29:09,381 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2021-05-01 07:29:09,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:09,388 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:29:09,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:09,498 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.1 percent of original size 32 [2021-05-01 07:29:09,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:09,624 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-05-01 07:29:09,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:09,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:29:09,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:09,952 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.2 percent of original size 50 [2021-05-01 07:29:10,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:10,141 INFO L147 QuantifierPusher]: treesize reduction 14, result has 75.0 percent of original size 42 [2021-05-01 07:29:10,362 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-01 07:29:10,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:10,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:29:10,607 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:29:10,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:10,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 07:29:10,840 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-01 07:29:10,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:10,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:29:11,114 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-01 07:29:11,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:11,121 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.1 percent of original size 66 [2021-05-01 07:29:11,418 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 07:29:11,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:11,425 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.3 percent of original size 72 [2021-05-01 07:29:11,747 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-01 07:29:11,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:11,754 INFO L147 QuantifierPusher]: treesize reduction 14, result has 82.5 percent of original size 66 [2021-05-01 07:29:12,054 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 07:29:12,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:12,062 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.3 percent of original size 72 [2021-05-01 07:29:12,471 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-01 07:29:12,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:12,478 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.5 percent of original size 74 [2021-05-01 07:29:12,918 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:29:12,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:12,925 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.6 percent of original size 80 [2021-05-01 07:29:13,410 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-05-01 07:29:13,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:13,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 07:29:13,919 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:29:13,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:13,928 INFO L147 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size 86 [2021-05-01 07:29:14,498 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:29:14,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:14,507 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.8 percent of original size 90 [2021-05-01 07:29:15,082 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:29:15,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:15,091 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-05-01 07:29:15,666 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:29:15,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:15,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:29:16,382 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:29:16,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:16,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:29:17,053 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:29:17,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:17,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-05-01 07:29:17,741 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:29:17,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:17,751 INFO L147 QuantifierPusher]: treesize reduction 12, result has 90.2 percent of original size 110 [2021-05-01 07:29:18,469 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:29:18,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:18,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-05-01 07:29:19,236 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:29:19,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:19,245 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.7 percent of original size 118 [2021-05-01 07:29:20,165 WARN L205 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:29:20,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:20,175 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 124 [2021-05-01 07:29:21,104 WARN L205 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:29:21,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:21,114 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.0 percent of original size 126 [2021-05-01 07:29:21,986 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:29:21,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:21,996 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.0 percent of original size 130 [2021-05-01 07:29:22,994 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:29:22,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:23,002 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.1 percent of original size 134 [2021-05-01 07:29:23,787 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:29:23,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:23,796 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 138 [2021-05-01 07:29:24,922 WARN L205 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:29:24,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:24,930 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size 142 [2021-05-01 07:29:25,978 WARN L205 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:29:25,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:25,987 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 148 [2021-05-01 07:29:26,973 WARN L205 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:29:26,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:26,983 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.9 percent of original size 150 [2021-05-01 07:29:28,147 WARN L205 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:29:28,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:28,156 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.3 percent of original size 154 [2021-05-01 07:29:29,289 WARN L205 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:29:29,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:29,297 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size 158 [2021-05-01 07:29:30,488 WARN L205 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:29:30,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:30,497 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.6 percent of original size 162 [2021-05-01 07:29:31,671 WARN L205 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:29:31,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:31,680 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.5 percent of original size 166 [2021-05-01 07:29:32,918 WARN L205 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:29:32,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:32,927 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 172 [2021-05-01 07:29:34,304 WARN L205 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:29:34,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:34,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-05-01 07:29:36,222 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:29:36,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:36,233 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.7 percent of original size 178 [2021-05-01 07:29:37,578 WARN L205 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:29:37,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:37,593 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 184 [2021-05-01 07:29:38,915 WARN L205 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:29:38,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:38,925 INFO L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 186 [2021-05-01 07:29:40,910 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 140 [2021-05-01 07:29:40,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:29:40,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:29:40,918 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:29:40,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765483684] [2021-05-01 07:29:40,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [765483684] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:29:40,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:29:40,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-01 07:29:40,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942189927] [2021-05-01 07:29:40,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-01 07:29:40,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:29:40,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-01 07:29:40,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2605, Unknown=0, NotChecked=0, Total=2756 [2021-05-01 07:29:40,919 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 49 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) [2021-05-01 07:29:42,168 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:29:42,712 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-01 07:29:43,264 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-01 07:29:43,832 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:29:44,427 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 07:29:45,074 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-05-01 07:29:45,646 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-05-01 07:29:46,377 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:29:47,106 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-05-01 07:29:47,946 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:29:48,654 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:29:49,316 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:29:49,992 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:29:50,795 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:29:51,685 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:29:52,587 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:29:53,537 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:29:54,403 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:29:55,373 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:29:56,417 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:29:57,556 WARN L205 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:29:58,574 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:29:59,595 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:30:00,643 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:30:01,944 WARN L205 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:30:03,150 WARN L205 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:30:04,597 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:30:05,799 WARN L205 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:30:07,067 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:30:08,600 WARN L205 SmtUtils]: Spent 870.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:30:10,049 WARN L205 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:30:11,562 WARN L205 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:30:12,931 WARN L205 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:30:14,367 WARN L205 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:30:15,910 WARN L205 SmtUtils]: Spent 991.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:30:17,467 WARN L205 SmtUtils]: Spent 918.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-05-01 07:30:18,958 WARN L205 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-05-01 07:30:20,476 WARN L205 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-05-01 07:30:21,984 WARN L205 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-05-01 07:30:23,792 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 152 [2021-05-01 07:30:25,850 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 155 [2021-05-01 07:30:28,198 WARN L205 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 158 [2021-05-01 07:30:30,091 WARN L205 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 161 [2021-05-01 07:30:32,146 WARN L205 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 164 [2021-05-01 07:30:33,437 WARN L205 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 36 [2021-05-01 07:30:34,813 WARN L205 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 41 [2021-05-01 07:30:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:30:35,884 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-05-01 07:30:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-01 07:30:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.04) internal successors, (52), 49 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 56 [2021-05-01 07:30:35,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:30:35,894 INFO L225 Difference]: With dead ends: 64 [2021-05-01 07:30:35,894 INFO L226 Difference]: Without dead ends: 58 [2021-05-01 07:30:35,895 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 73104.4ms TimeCoverageRelationStatistics Valid=401, Invalid=9699, Unknown=0, NotChecked=0, Total=10100 [2021-05-01 07:30:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-01 07:30:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-01 07:30:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 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) [2021-05-01 07:30:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-05-01 07:30:35,905 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2021-05-01 07:30:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:30:35,905 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-05-01 07:30:35,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 50 states have (on average 1.04) internal successors, (52), 49 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) [2021-05-01 07:30:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-05-01 07:30:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-01 07:30:35,906 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:30:35,906 INFO L519 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:30:35,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-01 07:30:35,906 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:30:35,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:30:35,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1535168223, now seen corresponding path program 44 times [2021-05-01 07:30:35,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:30:35,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29525846] [2021-05-01 07:30:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:30:35,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:35,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:30:35,925 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_1081 0)) InVars {main_~x~0=v_main_~x~0_1081} OutVars{main_~x~0=v_main_~x~0_1081} AuxVars[] AssignedVars[] [2021-05-01 07:30:35,929 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:30:35,933 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:35,946 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:30:35,955 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:30:35,958 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:30:35,973 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:30:35,984 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:35,997 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,011 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,025 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,036 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,048 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,058 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,069 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,080 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,083 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:30:36,205 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-05-01 07:30:36,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:30:36,214 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:30:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:30:36,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:30:36,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:36,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:30:36,242 INFO L142 QuantifierPusher]: treesize reduction 16, result has 59.0 percent of original size [2021-05-01 07:30:36,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:30:36,520 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2021-05-01 07:30:36,526 INFO L142 QuantifierPusher]: treesize reduction 47, result has 44.0 percent of original size [2021-05-01 07:30:36,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:30:36,874 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 22 [2021-05-01 07:30:36,880 INFO L142 QuantifierPusher]: treesize reduction 42, result has 44.7 percent of original size [2021-05-01 07:30:36,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:30:37,208 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-05-01 07:30:37,214 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:30:37,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:30:37,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:37,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:30:37,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:37,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:30:37,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:37,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:30:37,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:30:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:30:37,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:37,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:30:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:30:37,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:37,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:30:37,866 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2021-05-01 07:30:38,094 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-05-01 07:30:38,100 INFO L142 QuantifierPusher]: treesize reduction 11, result has 72.5 percent of original size [2021-05-01 07:30:38,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:30:38,336 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2021-05-01 07:30:38,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:38,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:30:38,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:38,489 INFO L147 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size 22 [2021-05-01 07:30:38,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:38,645 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:30:38,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:38,819 INFO L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-05-01 07:30:39,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:39,003 INFO L147 QuantifierPusher]: treesize reduction 4, result has 89.5 percent of original size 34 [2021-05-01 07:30:39,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:39,200 INFO L147 QuantifierPusher]: treesize reduction 4, result has 90.5 percent of original size 38 [2021-05-01 07:30:39,409 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-01 07:30:39,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:39,417 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 44 [2021-05-01 07:30:39,659 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-01 07:30:39,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:39,667 INFO L147 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-05-01 07:30:39,929 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 07:30:39,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:39,936 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-01 07:30:40,225 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-01 07:30:40,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:40,234 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-05-01 07:30:40,559 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-01 07:30:40,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:40,566 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.8 percent of original size 60 [2021-05-01 07:30:40,893 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 07:30:40,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:40,902 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.2 percent of original size 62 [2021-05-01 07:30:41,264 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-01 07:30:41,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:41,273 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-05-01 07:30:41,660 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-01 07:30:41,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:41,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 07:30:42,060 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-05-01 07:30:42,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:42,068 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size 74 [2021-05-01 07:30:42,526 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-05-01 07:30:42,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:42,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 07:30:43,039 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-05-01 07:30:43,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:43,047 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 86 [2021-05-01 07:30:43,552 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-05-01 07:30:43,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:43,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-05-01 07:30:44,110 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:30:44,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:44,119 INFO L147 QuantifierPusher]: treesize reduction 10, result has 90.0 percent of original size 90 [2021-05-01 07:30:44,815 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-01 07:30:44,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:44,824 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 96 [2021-05-01 07:30:45,371 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-05-01 07:30:45,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:45,380 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 102 [2021-05-01 07:30:45,907 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-05-01 07:30:45,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:45,917 INFO L147 QuantifierPusher]: treesize reduction 10, result has 91.1 percent of original size 102 [2021-05-01 07:30:46,600 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-05-01 07:30:46,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:46,610 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.6 percent of original size 106 [2021-05-01 07:30:47,450 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-05-01 07:30:47,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:47,461 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 112 [2021-05-01 07:30:48,202 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-01 07:30:48,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:48,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-05-01 07:30:49,034 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-05-01 07:30:49,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:49,044 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 124 [2021-05-01 07:30:49,942 WARN L205 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-05-01 07:30:49,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:49,952 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 130 [2021-05-01 07:30:50,812 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-05-01 07:30:50,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:50,823 INFO L147 QuantifierPusher]: treesize reduction 14, result has 90.0 percent of original size 126 [2021-05-01 07:30:51,820 WARN L205 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-05-01 07:30:51,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:51,830 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 132 [2021-05-01 07:30:52,795 WARN L205 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-05-01 07:30:52,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:52,804 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 138 [2021-05-01 07:30:53,877 WARN L205 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-05-01 07:30:53,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:53,887 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 138 [2021-05-01 07:30:54,983 WARN L205 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-05-01 07:30:54,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:54,993 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size 142 [2021-05-01 07:30:56,182 WARN L205 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-05-01 07:30:56,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:56,191 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.1 percent of original size 146 [2021-05-01 07:30:57,481 WARN L205 SmtUtils]: Spent 966.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-05-01 07:30:57,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:57,492 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size 150 [2021-05-01 07:30:58,659 WARN L205 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-05-01 07:30:58,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:58,670 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 156 [2021-05-01 07:30:59,579 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-05-01 07:30:59,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:30:59,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-05-01 07:31:00,743 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-05-01 07:31:00,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:31:00,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-05-01 07:31:02,138 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 123 [2021-05-01 07:31:02,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:31:02,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-05-01 07:31:03,668 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 126 [2021-05-01 07:31:03,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:31:03,679 INFO L147 QuantifierPusher]: treesize reduction 12, result has 93.4 percent of original size 170 [2021-05-01 07:31:05,329 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 129 [2021-05-01 07:31:05,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:31:05,343 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 174 [2021-05-01 07:31:07,055 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 132 [2021-05-01 07:31:07,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:31:07,066 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 178 [2021-05-01 07:31:09,067 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 135 [2021-05-01 07:31:09,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:31:09,079 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 184 [2021-05-01 07:31:11,036 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 138 [2021-05-01 07:31:11,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:31:11,055 INFO L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 186 [2021-05-01 07:31:13,021 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 141 [2021-05-01 07:31:13,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:31:13,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:31:13,031 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:31:13,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29525846] [2021-05-01 07:31:13,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [29525846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:31:13,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:31:13,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-01 07:31:13,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610137278] [2021-05-01 07:31:13,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-01 07:31:13,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:31:13,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-01 07:31:13,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2753, Unknown=0, NotChecked=0, Total=2862 [2021-05-01 07:31:13,032 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 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) [2021-05-01 07:31:14,575 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-01 07:31:15,146 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 07:31:15,828 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:31:16,506 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-01 07:31:17,178 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 07:31:17,865 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-01 07:31:18,697 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-01 07:31:19,535 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-05-01 07:31:20,366 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-05-01 07:31:21,123 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-05-01 07:31:21,842 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-05-01 07:31:22,770 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:31:23,703 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-01 07:31:24,663 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-05-01 07:31:25,551 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-05-01 07:31:26,501 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-05-01 07:31:27,527 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-05-01 07:31:28,478 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-01 07:31:29,453 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-05-01 07:31:30,545 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-05-01 07:31:31,622 WARN L205 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-05-01 07:31:32,704 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-05-01 07:31:33,948 WARN L205 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-05-01 07:31:35,046 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-05-01 07:31:36,420 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-05-01 07:31:37,651 WARN L205 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-05-01 07:31:39,057 WARN L205 SmtUtils]: Spent 870.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-05-01 07:31:40,474 WARN L205 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-05-01 07:31:41,924 WARN L205 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-05-01 07:31:43,715 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 120 [2021-05-01 07:31:45,204 WARN L205 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-05-01 07:31:46,629 WARN L205 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-05-01 07:31:48,273 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 129 [2021-05-01 07:31:49,865 WARN L205 SmtUtils]: Spent 989.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-05-01 07:31:51,644 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 135 [2021-05-01 07:31:53,118 WARN L205 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-05-01 07:31:54,849 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 141 [2021-05-01 07:31:56,527 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 144 [2021-05-01 07:31:58,067 WARN L205 SmtUtils]: Spent 945.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-05-01 07:32:00,005 WARN L205 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 150 [2021-05-01 07:32:02,225 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 153 [2021-05-01 07:32:03,884 WARN L205 SmtUtils]: Spent 979.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-05-01 07:32:05,535 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 159 [2021-05-01 07:32:07,722 WARN L205 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 162 [2021-05-01 07:32:09,441 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 165 [2021-05-01 07:32:11,028 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 184 DAG size of output: 37 [2021-05-01 07:32:12,884 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 184 DAG size of output: 41 [2021-05-01 07:32:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:32:14,703 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-05-01 07:32:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-01 07:32:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 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 57 [2021-05-01 07:32:14,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:32:14,715 INFO L225 Difference]: With dead ends: 65 [2021-05-01 07:32:14,715 INFO L226 Difference]: Without dead ends: 59 [2021-05-01 07:32:14,716 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 80301.7ms TimeCoverageRelationStatistics Valid=320, Invalid=10186, Unknown=0, NotChecked=0, Total=10506 [2021-05-01 07:32:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-01 07:32:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-05-01 07:32:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 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) [2021-05-01 07:32:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-05-01 07:32:14,724 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2021-05-01 07:32:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:32:14,724 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-05-01 07:32:14,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 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) [2021-05-01 07:32:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-05-01 07:32:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 07:32:14,724 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:32:14,724 INFO L519 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:32:14,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-01 07:32:14,724 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:32:14,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:32:14,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1870632635, now seen corresponding path program 45 times [2021-05-01 07:32:14,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:32:14,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228378233] [2021-05-01 07:32:14,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:32:14,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:32:14,745 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_1128 0)) InVars {main_~x~0=v_main_~x~0_1128} OutVars{main_~x~0=v_main_~x~0_1128} AuxVars[] AssignedVars[] [2021-05-01 07:32:14,749 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:32:14,764 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,776 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,789 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,801 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,815 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,827 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,831 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,842 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:32:14,853 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:32:14,856 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:32:14,879 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:32:14,896 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,913 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,930 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:14,933 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:32:15,083 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-05-01 07:32:15,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:15,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:32:15,105 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:32:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:32:15,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:15,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:32:15,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:15,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:32:15,132 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-05-01 07:32:15,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:32:15,181 INFO L142 QuantifierPusher]: treesize reduction 32, result has 50.8 percent of original size [2021-05-01 07:32:15,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:32:15,537 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2021-05-01 07:32:15,543 INFO L142 QuantifierPusher]: treesize reduction 23, result has 55.8 percent of original size [2021-05-01 07:32:15,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:32:15,759 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2021-05-01 07:32:15,765 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 07:32:15,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:32:15,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:15,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:32:15,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:15,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:32:15,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:15,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:32:16,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:32:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:32:16,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:16,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:32:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:32:16,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:16,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:32:16,354 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2021-05-01 07:32:16,569 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-05-01 07:32:16,576 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-05-01 07:32:16,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:32:16,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:16,715 INFO L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-05-01 07:32:16,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:16,871 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size 25 [2021-05-01 07:32:17,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:17,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:32:17,271 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-05-01 07:32:17,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:17,282 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size 37 [2021-05-01 07:32:17,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:17,518 INFO L147 QuantifierPusher]: treesize reduction 12, result has 74.5 percent of original size 35 [2021-05-01 07:32:17,766 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-01 07:32:17,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:17,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 07:32:18,055 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-01 07:32:18,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:18,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-05-01 07:32:18,393 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-01 07:32:18,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:18,405 INFO L147 QuantifierPusher]: treesize reduction 8, result has 85.5 percent of original size 47 [2021-05-01 07:32:18,749 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 07:32:18,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:18,758 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size 53 [2021-05-01 07:32:19,112 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:32:19,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:19,121 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.2 percent of original size 55 [2021-05-01 07:32:19,509 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-01 07:32:19,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:19,519 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.8 percent of original size 61 [2021-05-01 07:32:19,938 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:32:19,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:19,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 07:32:20,385 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-01 07:32:20,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:20,395 INFO L147 QuantifierPusher]: treesize reduction 8, result has 89.3 percent of original size 67 [2021-05-01 07:32:20,881 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-05-01 07:32:20,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:20,891 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.2 percent of original size 71 [2021-05-01 07:32:21,385 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-01 07:32:21,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:21,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-05-01 07:32:21,932 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-05-01 07:32:21,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:21,941 INFO L147 QuantifierPusher]: treesize reduction 8, result has 90.8 percent of original size 79 [2021-05-01 07:32:22,564 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-05-01 07:32:22,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:22,574 INFO L147 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size 83 [2021-05-01 07:32:23,204 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-05-01 07:32:23,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:23,214 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.6 percent of original size 87 [2021-05-01 07:32:23,844 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-05-01 07:32:23,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:23,855 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.9 percent of original size 93 [2021-05-01 07:32:24,500 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-01 07:32:24,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:24,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-05-01 07:32:25,210 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-01 07:32:25,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:25,221 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 105 [2021-05-01 07:32:25,945 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 07:32:25,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:25,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:32:26,690 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-05-01 07:32:26,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:26,701 INFO L147 QuantifierPusher]: treesize reduction 12, result has 89.9 percent of original size 107 [2021-05-01 07:32:27,643 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-05-01 07:32:27,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:27,654 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 113 [2021-05-01 07:32:28,516 WARN L205 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:32:28,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:28,527 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.0 percent of original size 115 [2021-05-01 07:32:29,441 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:32:29,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:29,451 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.7 percent of original size 119 [2021-05-01 07:32:30,312 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:32:30,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:30,323 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 125 [2021-05-01 07:32:31,187 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:32:31,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:31,198 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.1 percent of original size 127 [2021-05-01 07:32:32,320 WARN L205 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:32:32,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:32,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-05-01 07:32:33,446 WARN L205 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-05-01 07:32:33,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:33,458 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 139 [2021-05-01 07:32:34,363 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-05-01 07:32:34,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:34,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-05-01 07:32:35,389 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:32:35,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:35,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-05-01 07:32:36,401 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-05-01 07:32:36,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:36,412 INFO L147 QuantifierPusher]: treesize reduction 14, result has 91.3 percent of original size 147 [2021-05-01 07:32:37,494 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-05-01 07:32:37,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:37,505 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 153 [2021-05-01 07:32:38,744 WARN L205 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-05-01 07:32:38,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:38,755 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 159 [2021-05-01 07:32:40,150 WARN L205 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:32:40,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:40,161 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.1 percent of original size 159 [2021-05-01 07:32:41,280 WARN L205 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-01 07:32:41,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:41,291 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size 163 [2021-05-01 07:32:42,590 WARN L205 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-01 07:32:42,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:42,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-05-01 07:32:43,911 WARN L205 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-01 07:32:43,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:43,923 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 175 [2021-05-01 07:32:45,455 WARN L205 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-01 07:32:45,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:45,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-05-01 07:32:46,941 WARN L205 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-05-01 07:32:46,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:46,956 INFO L147 QuantifierPusher]: treesize reduction 12, result has 93.7 percent of original size 179 [2021-05-01 07:32:48,908 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 136 [2021-05-01 07:32:48,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:48,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-05-01 07:32:50,938 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 139 [2021-05-01 07:32:50,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:50,951 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.9 percent of original size 187 [2021-05-01 07:32:52,774 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 142 [2021-05-01 07:32:52,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:52,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-05-01 07:32:54,855 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 145 [2021-05-01 07:32:54,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:32:54,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:32:54,865 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:32:54,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228378233] [2021-05-01 07:32:54,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [228378233] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:32:54,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:32:54,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-01 07:32:54,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143581044] [2021-05-01 07:32:54,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-01 07:32:54,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:32:54,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-01 07:32:54,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2857, Unknown=0, NotChecked=0, Total=2970 [2021-05-01 07:32:54,867 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 51 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:32:56,519 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-01 07:32:57,374 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 07:32:58,257 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:32:59,122 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-01 07:32:59,993 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-01 07:33:00,880 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-01 07:33:01,790 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-05-01 07:33:02,742 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-01 07:33:03,726 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-05-01 07:33:04,671 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-05-01 07:33:05,695 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-05-01 07:33:06,748 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-05-01 07:33:07,805 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-01 07:33:08,847 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-01 07:33:09,904 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 07:33:11,041 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-05-01 07:33:12,149 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-05-01 07:33:13,366 WARN L205 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:33:14,569 WARN L205 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:33:15,845 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-05-01 07:33:17,025 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-01 07:33:18,280 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-01 07:33:19,682 WARN L205 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-05-01 07:33:20,951 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-05-01 07:33:22,429 WARN L205 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-05-01 07:33:23,775 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-05-01 07:33:25,267 WARN L205 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-05-01 07:33:26,650 WARN L205 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-05-01 07:33:27,996 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:33:29,546 WARN L205 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-01 07:33:31,322 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 124 [2021-05-01 07:33:32,633 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-01 07:33:34,250 WARN L205 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-01 07:33:35,691 WARN L205 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-05-01 07:33:37,542 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 136 [2021-05-01 07:33:39,161 WARN L205 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-05-01 07:33:41,123 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 142 [2021-05-01 07:33:42,707 WARN L205 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-05-01 07:33:44,465 WARN L205 SmtUtils]: Spent 991.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-05-01 07:33:46,534 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 151 [2021-05-01 07:33:48,447 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 154 [2021-05-01 07:33:50,217 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 157 [2021-05-01 07:33:52,050 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 160 [2021-05-01 07:33:54,504 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 163 [2021-05-01 07:33:56,624 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 166 [2021-05-01 07:33:59,183 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 169 [2021-05-01 07:34:00,866 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 185 DAG size of output: 37 [2021-05-01 07:34:02,833 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 181 DAG size of output: 41 [2021-05-01 07:34:03,361 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 07:34:04,222 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-01 07:34:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:34:04,932 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-05-01 07:34:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-01 07:34:04,943 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 51 states have internal predecessors, (54), 2 states have call successors, (3), 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 58 [2021-05-01 07:34:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:34:04,944 INFO L225 Difference]: With dead ends: 66 [2021-05-01 07:34:04,944 INFO L226 Difference]: Without dead ends: 60 [2021-05-01 07:34:04,945 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 91305.0ms TimeCoverageRelationStatistics Valid=328, Invalid=10592, Unknown=0, NotChecked=0, Total=10920 [2021-05-01 07:34:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-01 07:34:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-01 07:34:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 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) [2021-05-01 07:34:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-05-01 07:34:04,953 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2021-05-01 07:34:04,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:34:04,953 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-05-01 07:34:04,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 51 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:34:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-05-01 07:34:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-01 07:34:04,953 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:34:04,953 INFO L519 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:34:04,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-01 07:34:04,954 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:34:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:34:04,954 INFO L82 PathProgramCache]: Analyzing trace with hash -614872481, now seen corresponding path program 46 times [2021-05-01 07:34:04,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:34:04,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337435127] [2021-05-01 07:34:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:34:04,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:04,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:34:04,975 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_1176 0)) InVars {main_~x~0=v_main_~x~0_1176} OutVars{main_~x~0=v_main_~x~0_1176} AuxVars[] AssignedVars[] [2021-05-01 07:34:04,980 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size [2021-05-01 07:34:04,994 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,008 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,022 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,035 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,048 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,061 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,065 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,079 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 07:34:05,090 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:34:05,093 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:34:05,106 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,119 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,134 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,153 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:34:05,156 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 80.0 percent of original size 56 [2021-05-01 07:34:05,322 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-05-01 07:34:05,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-05-01 07:34:05,334 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:34:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:34:05,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:34:05,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:05,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:34:05,366 INFO L142 QuantifierPusher]: treesize reduction 38, result has 20.8 percent of original size [2021-05-01 07:34:05,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:34:05,434 INFO L142 QuantifierPusher]: treesize reduction 59, result has 48.7 percent of original size [2021-05-01 07:34:05,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:34:05,969 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2021-05-01 07:34:05,978 INFO L142 QuantifierPusher]: treesize reduction 49, result has 50.0 percent of original size [2021-05-01 07:34:05,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:34:06,318 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2021-05-01 07:34:06,325 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-05-01 07:34:06,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 07:34:06,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:06,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:34:06,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:06,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:34:06,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:06,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:34:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:34:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:34:06,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:06,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:34:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:34:06,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:06,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:34:07,093 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2021-05-01 07:34:07,359 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-05-01 07:34:07,367 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-05-01 07:34:07,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 07:34:07,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:07,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:34:07,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:07,718 INFO L147 QuantifierPusher]: treesize reduction 6, result has 81.3 percent of original size 26 [2021-05-01 07:34:07,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:07,936 INFO L147 QuantifierPusher]: treesize reduction 4, result has 88.2 percent of original size 30 [2021-05-01 07:34:08,161 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-05-01 07:34:08,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:08,174 INFO L147 QuantifierPusher]: treesize reduction 4, result has 89.5 percent of original size 34 [2021-05-01 07:34:08,455 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-05-01 07:34:08,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:08,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 07:34:08,734 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 07:34:08,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:08,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:34:09,086 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-01 07:34:09,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:09,097 INFO L147 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-05-01 07:34:09,468 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:34:09,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:09,478 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-01 07:34:09,867 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-01 07:34:09,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:09,880 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-05-01 07:34:10,321 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-01 07:34:10,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:10,332 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-05-01 07:34:10,776 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 07:34:10,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:10,788 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size 64 [2021-05-01 07:34:11,270 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-01 07:34:11,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:11,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-05-01 07:34:11,806 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 07:34:11,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:11,817 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.4 percent of original size 76 [2021-05-01 07:34:12,490 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-01 07:34:12,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:12,503 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.6 percent of original size 82 [2021-05-01 07:34:13,151 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:34:13,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:13,162 INFO L147 QuantifierPusher]: treesize reduction 14, result has 84.8 percent of original size 78 [2021-05-01 07:34:13,932 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-05-01 07:34:13,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:13,944 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size 84 [2021-05-01 07:34:14,672 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:34:14,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:14,684 INFO L147 QuantifierPusher]: treesize reduction 2, result has 97.8 percent of original size 90 [2021-05-01 07:34:15,549 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:34:15,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:15,564 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.0 percent of original size 96 [2021-05-01 07:34:16,489 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:34:16,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:16,502 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 102 [2021-05-01 07:34:17,425 WARN L205 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:34:17,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:17,437 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 108 [2021-05-01 07:34:18,485 WARN L205 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:34:18,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:18,498 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 114 [2021-05-01 07:34:19,417 WARN L205 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:34:19,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:19,429 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 120 [2021-05-01 07:34:20,404 WARN L205 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:34:20,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:20,417 INFO L147 QuantifierPusher]: treesize reduction 18, result has 85.9 percent of original size 110 [2021-05-01 07:34:21,704 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:34:21,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:21,716 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.0 percent of original size 114 [2021-05-01 07:34:22,912 WARN L205 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:34:22,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:22,925 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.4 percent of original size 120 [2021-05-01 07:34:24,221 WARN L205 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:34:24,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:24,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-05-01 07:34:25,439 WARN L205 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:34:25,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:25,451 INFO L147 QuantifierPusher]: treesize reduction 8, result has 94.0 percent of original size 126 [2021-05-01 07:34:26,789 WARN L205 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:34:26,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:26,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-05-01 07:34:28,263 WARN L205 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:34:28,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:28,277 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.7 percent of original size 134 [2021-05-01 07:34:29,732 WARN L205 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:34:29,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:29,745 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 138 [2021-05-01 07:34:31,443 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:34:31,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:31,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-05-01 07:34:33,132 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:34:33,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:33,145 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 150 [2021-05-01 07:34:34,780 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:34:34,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:34,793 INFO L147 QuantifierPusher]: treesize reduction 10, result has 93.8 percent of original size 150 [2021-05-01 07:34:36,812 WARN L205 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:34:36,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:36,824 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.7 percent of original size 156 [2021-05-01 07:34:38,526 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:34:38,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:38,539 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 162 [2021-05-01 07:34:40,272 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:34:40,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:40,285 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.8 percent of original size 168 [2021-05-01 07:34:42,019 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:34:42,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:42,032 INFO L147 QuantifierPusher]: treesize reduction 10, result has 94.3 percent of original size 166 [2021-05-01 07:34:43,881 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:34:43,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:43,895 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.7 percent of original size 170 [2021-05-01 07:34:46,007 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 128 [2021-05-01 07:34:46,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:46,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-05-01 07:34:48,993 WARN L205 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 131 [2021-05-01 07:34:49,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:49,008 INFO L147 QuantifierPusher]: treesize reduction 8, result has 95.7 percent of original size 178 [2021-05-01 07:34:51,012 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 134 [2021-05-01 07:34:51,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:51,026 INFO L147 QuantifierPusher]: treesize reduction 6, result has 96.8 percent of original size 182 [2021-05-01 07:34:53,792 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 137 [2021-05-01 07:34:53,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:53,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-05-01 07:34:56,379 WARN L205 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 140 [2021-05-01 07:34:56,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:56,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-05-01 07:34:58,471 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 143 [2021-05-01 07:34:58,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:34:58,484 INFO L147 QuantifierPusher]: treesize reduction 2, result has 99.0 percent of original size 200 [2021-05-01 07:35:00,472 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 146 [2021-05-01 07:35:00,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:35:00,486 INFO L147 QuantifierPusher]: treesize reduction 10, result has 95.2 percent of original size 198 [2021-05-01 07:35:03,183 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 149 [2021-05-01 07:35:03,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:35:03,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:35:03,196 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:35:03,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337435127] [2021-05-01 07:35:03,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1337435127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:35:03,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:35:03,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-01 07:35:03,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295691117] [2021-05-01 07:35:03,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-01 07:35:03,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:35:03,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-01 07:35:03,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2965, Unknown=0, NotChecked=0, Total=3080 [2021-05-01 07:35:03,197 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 52 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) [2021-05-01 07:35:05,391 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-01 07:35:06,227 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-01 07:35:07,107 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-01 07:35:07,950 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 07:35:08,896 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-01 07:35:10,055 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 07:35:11,077 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-01 07:35:12,167 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:35:13,064 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-05-01 07:35:14,298 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 07:35:15,479 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-01 07:35:16,592 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-01 07:35:17,656 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:35:18,907 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 07:35:20,308 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:35:21,662 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-05-01 07:35:23,223 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:35:24,644 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-01 07:35:26,101 WARN L205 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:35:27,694 WARN L205 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-01 07:35:29,305 WARN L205 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-05-01 07:35:31,024 WARN L205 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-01 07:35:32,866 WARN L205 SmtUtils]: Spent 972.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:35:34,659 WARN L205 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:35:36,816 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:35:38,849 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 110 [2021-05-01 07:35:40,553 WARN L205 SmtUtils]: Spent 979.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-05-01 07:35:42,133 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-01 07:35:43,738 WARN L205 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-01 07:35:45,563 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 122 [2021-05-01 07:35:47,319 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:35:49,224 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 128