/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:30:37,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:30:37,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:30:37,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:30:37,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:30:37,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:30:37,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:30:37,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:30:37,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:30:37,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:30:37,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:30:37,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:30:37,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:30:37,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:30:37,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:30:37,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:30:37,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:30:38,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:30:38,032 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:30:38,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:30:38,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:30:38,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:30:38,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:30:38,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:30:38,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:30:38,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:30:38,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:30:38,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:30:38,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:30:38,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:30:38,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:30:38,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:30:38,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:30:38,044 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:30:38,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:30:38,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:30:38,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:30:38,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:30:38,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:30:38,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:30:38,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:30:38,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:30:38,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:30:38,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:30:38,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:30:38,496 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:30:38,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2021-02-24 00:30:38,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e911960ca/f3a310a304c04d74b224b0033962c55b/FLAGa33e230a5 [2021-02-24 00:30:39,192 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:30:39,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2021-02-24 00:30:39,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e911960ca/f3a310a304c04d74b224b0033962c55b/FLAGa33e230a5 [2021-02-24 00:30:39,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e911960ca/f3a310a304c04d74b224b0033962c55b [2021-02-24 00:30:39,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:30:39,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:30:39,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:39,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:30:39,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:30:39,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d328bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39, skipping insertion in model container [2021-02-24 00:30:39,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:30:39,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:30:39,767 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c[403,416] [2021-02-24 00:30:39,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:39,795 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:30:39,810 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c[403,416] [2021-02-24 00:30:39,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:39,835 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:30:39,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39 WrapperNode [2021-02-24 00:30:39,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:39,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:30:39,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:30:39,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:30:39,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (1/1) ... [2021-02-24 00:30:39,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:30:39,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:30:39,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:30:39,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:30:39,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (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 [2021-02-24 00:30:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:30:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:30:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:30:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:30:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:30:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:30:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:30:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:30:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:30:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:30:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:30:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:30:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:30:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:30:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:30:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:30:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:30:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:30:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:30:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:30:40,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:30:40,501 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:30:40,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:40 BoogieIcfgContainer [2021-02-24 00:30:40,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:30:40,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:30:40,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:30:40,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:30:40,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:30:39" (1/3) ... [2021-02-24 00:30:40,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1c717d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:40, skipping insertion in model container [2021-02-24 00:30:40,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:39" (2/3) ... [2021-02-24 00:30:40,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1c717d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:40, skipping insertion in model container [2021-02-24 00:30:40,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:40" (3/3) ... [2021-02-24 00:30:40,512 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt5.c [2021-02-24 00:30:40,520 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:30:40,526 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:30:40,550 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:30:40,577 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:30:40,578 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:30:40,578 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:30:40,578 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:30:40,578 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:30:40,578 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:30:40,578 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:30:40,579 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:30:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2021-02-24 00:30:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-24 00:30:40,607 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:40,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:40,608 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:40,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:40,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1150784678, now seen corresponding path program 1 times [2021-02-24 00:30:40,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:40,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119259816] [2021-02-24 00:30:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:41,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:41,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:41,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:41,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:30:41,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:30:41,248 WARN L141 QuantifierPusher]: treesize reduction 26, result has 71.1 percent of original size [2021-02-24 00:30:41,251 WARN L147 QuantifierPusher]: treesize reduction 26, result has 71.1 percent of original size 64 [2021-02-24 00:30:41,298 WARN L141 QuantifierPusher]: treesize reduction 27, result has 80.9 percent of original size [2021-02-24 00:30:41,304 WARN L147 QuantifierPusher]: treesize reduction 27, result has 80.9 percent of original size 114 [2021-02-24 00:30:41,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:41,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:41,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:41,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:41,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119259816] [2021-02-24 00:30:41,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:30:41,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 00:30:41,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299584189] [2021-02-24 00:30:41,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:30:41,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:41,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:30:41,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:30:41,535 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 11 states. [2021-02-24 00:30:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:43,007 INFO L93 Difference]: Finished difference Result 129 states and 172 transitions. [2021-02-24 00:30:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:30:43,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2021-02-24 00:30:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:43,020 INFO L225 Difference]: With dead ends: 129 [2021-02-24 00:30:43,021 INFO L226 Difference]: Without dead ends: 80 [2021-02-24 00:30:43,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:30:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-24 00:30:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 42. [2021-02-24 00:30:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-24 00:30:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-02-24 00:30:43,082 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 29 [2021-02-24 00:30:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:43,083 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-02-24 00:30:43,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:30:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-02-24 00:30:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-24 00:30:43,084 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:43,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:43,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:30:43,085 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:43,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1302396788, now seen corresponding path program 1 times [2021-02-24 00:30:43,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:43,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104019928] [2021-02-24 00:30:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:43,240 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:30:43,242 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:30:43,274 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:30:43,275 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:30:43,316 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:30:43,318 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:30:43,366 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:30:43,368 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:30:43,423 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:30:43,425 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:30:43,492 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:30:43,493 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:30:43,571 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:30:43,573 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:30:43,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:30:43,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:30:43,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:30:43,838 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.1 percent of original size [2021-02-24 00:30:43,842 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.1 percent of original size 160 [2021-02-24 00:30:44,023 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-02-24 00:30:44,031 WARN L141 QuantifierPusher]: treesize reduction 28, result has 83.9 percent of original size [2021-02-24 00:30:44,037 WARN L147 QuantifierPusher]: treesize reduction 28, result has 83.9 percent of original size 146 [2021-02-24 00:30:44,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:44,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:44,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:44,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:44,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:44,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104019928] [2021-02-24 00:30:44,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:44,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:30:44,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34641665] [2021-02-24 00:30:44,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:30:44,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:44,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:30:44,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:30:44,392 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 18 states. [2021-02-24 00:30:44,653 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:30:44,813 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:30:44,974 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:30:45,164 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:30:45,405 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:30:45,622 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:30:45,914 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-02-24 00:30:46,217 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-02-24 00:30:46,492 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-02-24 00:30:47,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:47,203 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2021-02-24 00:30:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:30:47,205 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2021-02-24 00:30:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:47,207 INFO L225 Difference]: With dead ends: 95 [2021-02-24 00:30:47,207 INFO L226 Difference]: Without dead ends: 90 [2021-02-24 00:30:47,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:30:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-02-24 00:30:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 45. [2021-02-24 00:30:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-24 00:30:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-02-24 00:30:47,232 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 33 [2021-02-24 00:30:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:47,232 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-02-24 00:30:47,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:30:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-02-24 00:30:47,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-24 00:30:47,234 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:47,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:47,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:30:47,235 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:47,236 INFO L82 PathProgramCache]: Analyzing trace with hash -719189646, now seen corresponding path program 2 times [2021-02-24 00:30:47,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:47,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463976155] [2021-02-24 00:30:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:47,377 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:47,379 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:47,409 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:30:47,411 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:30:47,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:47,471 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:30:47,473 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:30:47,541 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:30:47,543 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 95 [2021-02-24 00:30:47,567 WARN L141 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size [2021-02-24 00:30:47,569 WARN L147 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size 1 [2021-02-24 00:30:47,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:47,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:47,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:47,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:47,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463976155] [2021-02-24 00:30:47,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:47,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:30:47,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25921483] [2021-02-24 00:30:47,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:30:47,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:47,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:30:47,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:30:47,693 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2021-02-24 00:30:47,948 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-02-24 00:30:48,108 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-02-24 00:30:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:48,430 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-02-24 00:30:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:30:48,430 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2021-02-24 00:30:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:48,432 INFO L225 Difference]: With dead ends: 70 [2021-02-24 00:30:48,432 INFO L226 Difference]: Without dead ends: 54 [2021-02-24 00:30:48,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:30:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-24 00:30:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2021-02-24 00:30:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-24 00:30:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-02-24 00:30:48,463 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 37 [2021-02-24 00:30:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:48,463 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-02-24 00:30:48,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:30:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-02-24 00:30:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:30:48,465 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:48,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:48,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:30:48,466 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:48,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1043250282, now seen corresponding path program 1 times [2021-02-24 00:30:48,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:48,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757376817] [2021-02-24 00:30:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:48,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:48,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:48,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:48,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:48,516 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:48,522 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:48,554 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:48,555 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:48,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:48,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:48,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:48,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:48,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:48,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757376817] [2021-02-24 00:30:48,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:48,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:48,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680359159] [2021-02-24 00:30:48,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:48,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:48,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:48,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:48,617 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2021-02-24 00:30:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:48,958 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2021-02-24 00:30:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:48,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 00:30:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:48,960 INFO L225 Difference]: With dead ends: 69 [2021-02-24 00:30:48,961 INFO L226 Difference]: Without dead ends: 53 [2021-02-24 00:30:48,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-24 00:30:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2021-02-24 00:30:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-02-24 00:30:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-02-24 00:30:48,984 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 38 [2021-02-24 00:30:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:48,984 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-02-24 00:30:48,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-02-24 00:30:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-24 00:30:48,986 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:48,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:48,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:30:48,987 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:48,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:48,987 INFO L82 PathProgramCache]: Analyzing trace with hash 874367992, now seen corresponding path program 1 times [2021-02-24 00:30:48,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:48,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610135040] [2021-02-24 00:30:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:49,157 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:30:49,158 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:30:49,185 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:30:49,187 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:30:49,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:49,234 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:30:49,238 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 110 [2021-02-24 00:30:49,322 WARN L141 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size [2021-02-24 00:30:49,323 WARN L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 109 [2021-02-24 00:30:49,420 WARN L141 QuantifierPusher]: treesize reduction 12, result has 67.6 percent of original size [2021-02-24 00:30:49,421 WARN L147 QuantifierPusher]: treesize reduction 12, result has 67.6 percent of original size 25 [2021-02-24 00:30:49,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:30:49,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:49,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:49,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:49,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:49,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610135040] [2021-02-24 00:30:49,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:49,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:30:49,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376502084] [2021-02-24 00:30:49,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:30:49,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:49,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:30:49,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:30:49,643 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2021-02-24 00:30:49,929 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:30:50,294 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-02-24 00:30:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:50,761 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-02-24 00:30:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:30:50,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2021-02-24 00:30:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:50,763 INFO L225 Difference]: With dead ends: 68 [2021-02-24 00:30:50,763 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 00:30:50,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:30:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 00:30:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-02-24 00:30:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-24 00:30:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-02-24 00:30:50,789 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 39 [2021-02-24 00:30:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:50,789 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-02-24 00:30:50,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:30:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-02-24 00:30:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 00:30:50,791 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:50,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:50,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:30:50,791 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:50,792 INFO L82 PathProgramCache]: Analyzing trace with hash 964039088, now seen corresponding path program 1 times [2021-02-24 00:30:50,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:50,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440816220] [2021-02-24 00:30:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:50,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:50,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:50,850 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:50,851 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:50,881 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:50,882 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:50,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:50,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:50,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:50,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440816220] [2021-02-24 00:30:50,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:50,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:50,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383637579] [2021-02-24 00:30:50,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:50,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:50,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:50,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:50,952 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2021-02-24 00:30:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:51,264 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-02-24 00:30:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:51,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2021-02-24 00:30:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:51,271 INFO L225 Difference]: With dead ends: 67 [2021-02-24 00:30:51,271 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 00:30:51,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:51,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 00:30:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-02-24 00:30:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-24 00:30:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-02-24 00:30:51,302 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 40 [2021-02-24 00:30:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:51,303 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-02-24 00:30:51,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-02-24 00:30:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 00:30:51,304 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:51,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:51,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:30:51,304 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:51,305 INFO L82 PathProgramCache]: Analyzing trace with hash 265046544, now seen corresponding path program 1 times [2021-02-24 00:30:51,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:51,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394297636] [2021-02-24 00:30:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:51,423 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:30:51,425 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:30:51,458 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:30:51,462 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:30:51,498 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:30:51,500 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:30:51,550 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:30:51,551 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:30:51,632 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:30:51,634 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:30:51,716 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:30:51,717 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:30:51,815 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:30:51,818 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:30:51,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:51,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:30:51,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:51,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:30:52,036 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size [2021-02-24 00:30:52,039 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size 48 [2021-02-24 00:30:52,142 WARN L141 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size [2021-02-24 00:30:52,145 WARN L147 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size 52 [2021-02-24 00:30:52,256 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.4 percent of original size [2021-02-24 00:30:52,257 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.4 percent of original size 59 [2021-02-24 00:30:52,349 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.3 percent of original size [2021-02-24 00:30:52,352 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.3 percent of original size 162 [2021-02-24 00:30:52,533 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-02-24 00:30:52,539 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.4 percent of original size [2021-02-24 00:30:52,543 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.4 percent of original size 151 [2021-02-24 00:30:52,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:52,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:52,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:52,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:52,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:52,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:52,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:52,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:52,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:52,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:52,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394297636] [2021-02-24 00:30:52,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:52,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-24 00:30:52,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562900404] [2021-02-24 00:30:52,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-24 00:30:52,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:52,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-24 00:30:52,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:30:52,916 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 20 states. [2021-02-24 00:30:53,215 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:30:53,398 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:30:53,585 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:30:53,793 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:30:54,019 WARN L202 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:30:54,240 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:30:54,523 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:30:54,823 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-02-24 00:30:55,117 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-02-24 00:30:55,462 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-02-24 00:30:55,746 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-02-24 00:30:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:56,353 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2021-02-24 00:30:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:30:56,354 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2021-02-24 00:30:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:56,358 INFO L225 Difference]: With dead ends: 78 [2021-02-24 00:30:56,358 INFO L226 Difference]: Without dead ends: 73 [2021-02-24 00:30:56,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:30:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-24 00:30:56,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2021-02-24 00:30:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 00:30:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-02-24 00:30:56,397 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 40 [2021-02-24 00:30:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:56,398 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-02-24 00:30:56,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-24 00:30:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-02-24 00:30:56,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-24 00:30:56,399 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:56,400 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:56,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:30:56,401 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:56,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1073286922, now seen corresponding path program 2 times [2021-02-24 00:30:56,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:56,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932124588] [2021-02-24 00:30:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:56,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:56,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:56,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:56,500 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size [2021-02-24 00:30:56,501 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 103 [2021-02-24 00:30:56,596 WARN L141 QuantifierPusher]: treesize reduction 16, result has 87.1 percent of original size [2021-02-24 00:30:56,598 WARN L147 QuantifierPusher]: treesize reduction 16, result has 87.1 percent of original size 108 [2021-02-24 00:30:56,619 WARN L141 QuantifierPusher]: treesize reduction 24, result has 88.0 percent of original size [2021-02-24 00:30:56,623 WARN L147 QuantifierPusher]: treesize reduction 24, result has 88.0 percent of original size 176 [2021-02-24 00:30:56,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:56,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:56,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932124588] [2021-02-24 00:30:56,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:56,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:30:56,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977173221] [2021-02-24 00:30:56,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:30:56,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:56,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:30:56,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:30:56,709 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2021-02-24 00:30:57,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:57,216 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2021-02-24 00:30:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:30:57,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2021-02-24 00:30:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:57,218 INFO L225 Difference]: With dead ends: 77 [2021-02-24 00:30:57,219 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 00:30:57,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:30:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 00:30:57,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2021-02-24 00:30:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-24 00:30:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-02-24 00:30:57,245 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 44 [2021-02-24 00:30:57,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:57,246 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-02-24 00:30:57,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:30:57,246 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-02-24 00:30:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 00:30:57,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:57,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:57,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:30:57,248 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1343830682, now seen corresponding path program 1 times [2021-02-24 00:30:57,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:57,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382074642] [2021-02-24 00:30:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:57,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:57,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:57,307 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:57,308 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:57,340 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:57,340 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:57,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:57,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:57,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382074642] [2021-02-24 00:30:57,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:57,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:30:57,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503278444] [2021-02-24 00:30:57,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:30:57,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:57,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:30:57,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:30:57,406 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 6 states. [2021-02-24 00:30:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:57,871 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2021-02-24 00:30:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:30:57,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2021-02-24 00:30:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:57,873 INFO L225 Difference]: With dead ends: 76 [2021-02-24 00:30:57,873 INFO L226 Difference]: Without dead ends: 60 [2021-02-24 00:30:57,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:30:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-24 00:30:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-02-24 00:30:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-24 00:30:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-02-24 00:30:57,912 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 45 [2021-02-24 00:30:57,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:57,915 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-02-24 00:30:57,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:30:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-02-24 00:30:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-24 00:30:57,918 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:57,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:57,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:30:57,918 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:57,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:57,919 INFO L82 PathProgramCache]: Analyzing trace with hash -110697860, now seen corresponding path program 1 times [2021-02-24 00:30:57,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:57,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699719876] [2021-02-24 00:30:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:58,061 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:30:58,062 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:30:58,090 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:30:58,091 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:30:58,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:58,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:30:58,161 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:30:58,163 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 110 [2021-02-24 00:30:58,248 WARN L141 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size [2021-02-24 00:30:58,250 WARN L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 109 [2021-02-24 00:30:58,332 WARN L141 QuantifierPusher]: treesize reduction 12, result has 67.6 percent of original size [2021-02-24 00:30:58,333 WARN L147 QuantifierPusher]: treesize reduction 12, result has 67.6 percent of original size 25 [2021-02-24 00:30:58,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:30:58,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:58,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:58,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:58,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:58,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699719876] [2021-02-24 00:30:58,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:58,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:30:58,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496480717] [2021-02-24 00:30:58,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:30:58,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:58,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:30:58,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:30:58,467 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 10 states. [2021-02-24 00:30:58,764 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:30:59,330 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-02-24 00:30:59,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:59,638 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2021-02-24 00:30:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:30:59,639 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2021-02-24 00:30:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:59,640 INFO L225 Difference]: With dead ends: 75 [2021-02-24 00:30:59,640 INFO L226 Difference]: Without dead ends: 59 [2021-02-24 00:30:59,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:30:59,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-02-24 00:30:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2021-02-24 00:30:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-24 00:30:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-02-24 00:30:59,661 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 46 [2021-02-24 00:30:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:59,662 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-02-24 00:30:59,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:30:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-02-24 00:30:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 00:30:59,663 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:59,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:59,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:30:59,664 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:59,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:59,664 INFO L82 PathProgramCache]: Analyzing trace with hash 491768748, now seen corresponding path program 1 times [2021-02-24 00:30:59,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:59,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850173246] [2021-02-24 00:30:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:59,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:59,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:59,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:59,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:30:59,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:30:59,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:30:59,907 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-24 00:30:59,909 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 37 [2021-02-24 00:31:00,003 WARN L141 QuantifierPusher]: treesize reduction 7, result has 85.4 percent of original size [2021-02-24 00:31:00,005 WARN L147 QuantifierPusher]: treesize reduction 7, result has 85.4 percent of original size 41 [2021-02-24 00:31:00,066 WARN L141 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size [2021-02-24 00:31:00,067 WARN L147 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size 47 [2021-02-24 00:31:00,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:00,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-24 00:31:00,227 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.7 percent of original size [2021-02-24 00:31:00,230 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.7 percent of original size 172 [2021-02-24 00:31:00,400 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-02-24 00:31:00,404 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-02-24 00:31:00,406 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 176 [2021-02-24 00:31:00,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:00,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:00,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:00,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:00,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850173246] [2021-02-24 00:31:00,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:00,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-24 00:31:00,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29669353] [2021-02-24 00:31:00,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 00:31:00,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:00,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 00:31:00,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:31:00,702 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2021-02-24 00:31:01,759 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-24 00:31:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:02,705 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2021-02-24 00:31:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:31:02,706 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2021-02-24 00:31:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:02,708 INFO L225 Difference]: With dead ends: 86 [2021-02-24 00:31:02,708 INFO L226 Difference]: Without dead ends: 81 [2021-02-24 00:31:02,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:31:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-24 00:31:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2021-02-24 00:31:02,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 00:31:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-02-24 00:31:02,748 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 47 [2021-02-24 00:31:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:02,749 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-02-24 00:31:02,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 00:31:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-02-24 00:31:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-24 00:31:02,754 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:02,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:02,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 00:31:02,755 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:02,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:02,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1987593362, now seen corresponding path program 2 times [2021-02-24 00:31:02,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:02,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385872482] [2021-02-24 00:31:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:02,867 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:31:02,868 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:31:02,896 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:31:02,897 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:31:02,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:02,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:02,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:02,986 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size [2021-02-24 00:31:02,987 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 113 [2021-02-24 00:31:03,121 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-02-24 00:31:03,124 WARN L141 QuantifierPusher]: treesize reduction 9, result has 92.7 percent of original size [2021-02-24 00:31:03,129 WARN L147 QuantifierPusher]: treesize reduction 9, result has 92.7 percent of original size 115 [2021-02-24 00:31:03,252 WARN L141 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-02-24 00:31:03,253 WARN L147 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size 184 [2021-02-24 00:31:03,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:31:03,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:03,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:03,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:03,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385872482] [2021-02-24 00:31:03,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:03,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:31:03,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945256814] [2021-02-24 00:31:03,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:31:03,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:03,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:31:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:31:03,591 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 13 states. [2021-02-24 00:31:03,869 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:31:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:05,252 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2021-02-24 00:31:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:31:05,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2021-02-24 00:31:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:05,254 INFO L225 Difference]: With dead ends: 87 [2021-02-24 00:31:05,254 INFO L226 Difference]: Without dead ends: 68 [2021-02-24 00:31:05,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:31:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-24 00:31:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2021-02-24 00:31:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 00:31:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-02-24 00:31:05,287 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 51 [2021-02-24 00:31:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:05,287 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-02-24 00:31:05,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:31:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-02-24 00:31:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 00:31:05,288 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:05,288 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:05,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 00:31:05,289 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:05,289 INFO L82 PathProgramCache]: Analyzing trace with hash -945822390, now seen corresponding path program 1 times [2021-02-24 00:31:05,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:05,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983160006] [2021-02-24 00:31:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:05,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:05,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:05,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:05,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:05,354 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:05,355 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:05,386 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:05,387 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:05,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:05,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:05,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983160006] [2021-02-24 00:31:05,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:05,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:05,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872272714] [2021-02-24 00:31:05,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:05,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:05,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:05,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:05,448 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 7 states. [2021-02-24 00:31:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:06,051 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-02-24 00:31:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:31:06,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2021-02-24 00:31:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:06,054 INFO L225 Difference]: With dead ends: 80 [2021-02-24 00:31:06,054 INFO L226 Difference]: Without dead ends: 64 [2021-02-24 00:31:06,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-24 00:31:06,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-02-24 00:31:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-24 00:31:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-02-24 00:31:06,084 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 52 [2021-02-24 00:31:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:06,085 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-02-24 00:31:06,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:06,085 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-02-24 00:31:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 00:31:06,086 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:06,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:06,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 00:31:06,086 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:06,087 INFO L82 PathProgramCache]: Analyzing trace with hash -657342696, now seen corresponding path program 1 times [2021-02-24 00:31:06,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:06,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214355328] [2021-02-24 00:31:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:06,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:06,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:06,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:06,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:06,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:06,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:06,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:06,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:06,405 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-24 00:31:06,407 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 37 [2021-02-24 00:31:06,505 WARN L141 QuantifierPusher]: treesize reduction 7, result has 85.4 percent of original size [2021-02-24 00:31:06,506 WARN L147 QuantifierPusher]: treesize reduction 7, result has 85.4 percent of original size 41 [2021-02-24 00:31:06,572 WARN L141 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size [2021-02-24 00:31:06,574 WARN L147 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size 47 [2021-02-24 00:31:06,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:06,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-24 00:31:06,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:06,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-24 00:31:06,825 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.2 percent of original size [2021-02-24 00:31:06,827 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.2 percent of original size 149 [2021-02-24 00:31:06,967 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.5 percent of original size [2021-02-24 00:31:06,969 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.5 percent of original size 153 [2021-02-24 00:31:07,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:07,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:07,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:07,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:07,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:07,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:07,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:07,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:07,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214355328] [2021-02-24 00:31:07,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:07,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-24 00:31:07,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562008128] [2021-02-24 00:31:07,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-24 00:31:07,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:07,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-24 00:31:07,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:31:07,199 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 21 states. [2021-02-24 00:31:08,344 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-24 00:31:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:09,467 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2021-02-24 00:31:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 00:31:09,468 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 53 [2021-02-24 00:31:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:09,469 INFO L225 Difference]: With dead ends: 79 [2021-02-24 00:31:09,470 INFO L226 Difference]: Without dead ends: 74 [2021-02-24 00:31:09,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=243, Invalid=1163, Unknown=0, NotChecked=0, Total=1406 [2021-02-24 00:31:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-02-24 00:31:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2021-02-24 00:31:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-24 00:31:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-02-24 00:31:09,504 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 53 [2021-02-24 00:31:09,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:09,504 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-02-24 00:31:09,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-24 00:31:09,504 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-02-24 00:31:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 00:31:09,505 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:09,505 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:09,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 00:31:09,506 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:09,506 INFO L82 PathProgramCache]: Analyzing trace with hash -272981506, now seen corresponding path program 2 times [2021-02-24 00:31:09,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:09,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091737518] [2021-02-24 00:31:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:09,614 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:31:09,615 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:31:09,649 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:31:09,650 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:31:09,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:09,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:09,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:09,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:09,772 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size [2021-02-24 00:31:09,774 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 113 [2021-02-24 00:31:09,894 WARN L141 QuantifierPusher]: treesize reduction 9, result has 92.7 percent of original size [2021-02-24 00:31:09,895 WARN L147 QuantifierPusher]: treesize reduction 9, result has 92.7 percent of original size 115 [2021-02-24 00:31:10,033 WARN L141 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-02-24 00:31:10,034 WARN L147 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size 184 [2021-02-24 00:31:10,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:31:10,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:10,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:10,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091737518] [2021-02-24 00:31:10,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:10,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:31:10,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373744033] [2021-02-24 00:31:10,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:31:10,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:10,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:31:10,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:31:10,235 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 13 states. [2021-02-24 00:31:10,534 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:31:11,454 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:31:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:11,766 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2021-02-24 00:31:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:31:11,767 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2021-02-24 00:31:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:11,768 INFO L225 Difference]: With dead ends: 85 [2021-02-24 00:31:11,768 INFO L226 Difference]: Without dead ends: 69 [2021-02-24 00:31:11,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:31:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-02-24 00:31:11,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-02-24 00:31:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-24 00:31:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-02-24 00:31:11,806 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 57 [2021-02-24 00:31:11,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:11,806 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-02-24 00:31:11,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:31:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-02-24 00:31:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 00:31:11,807 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:11,807 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:11,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-24 00:31:11,807 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1990800734, now seen corresponding path program 1 times [2021-02-24 00:31:11,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:11,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035247502] [2021-02-24 00:31:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:11,912 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:31:11,913 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:31:11,944 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:31:11,945 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:31:11,985 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:31:11,986 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:31:12,033 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:31:12,033 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:31:12,096 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:31:12,097 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:31:12,190 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:31:12,192 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:31:12,275 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:31:12,276 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:31:12,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:12,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:12,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:31:12,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:31:12,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:31:12,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:31:12,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:31:12,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:31:13,022 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:31:13,024 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 54 [2021-02-24 00:31:13,145 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.1 percent of original size [2021-02-24 00:31:13,148 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.1 percent of original size 57 [2021-02-24 00:31:13,266 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:31:13,267 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:31:13,389 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size [2021-02-24 00:31:13,391 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size 190 [2021-02-24 00:31:13,588 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-02-24 00:31:13,592 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-02-24 00:31:13,595 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 178 [2021-02-24 00:31:13,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:13,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:13,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:14,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035247502] [2021-02-24 00:31:14,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:14,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-24 00:31:14,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600156873] [2021-02-24 00:31:14,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-24 00:31:14,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-24 00:31:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2021-02-24 00:31:14,062 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 26 states. [2021-02-24 00:31:14,397 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:31:14,607 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:31:14,829 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:31:15,064 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:31:15,314 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:31:15,562 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:31:15,936 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:31:16,219 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:31:16,593 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:31:16,861 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:31:17,230 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:31:17,489 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:31:17,902 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-24 00:31:18,075 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-24 00:31:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:18,934 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-02-24 00:31:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-24 00:31:18,935 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 58 [2021-02-24 00:31:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:18,937 INFO L225 Difference]: With dead ends: 84 [2021-02-24 00:31:18,937 INFO L226 Difference]: Without dead ends: 79 [2021-02-24 00:31:18,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=302, Invalid=1768, Unknown=0, NotChecked=0, Total=2070 [2021-02-24 00:31:18,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-24 00:31:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2021-02-24 00:31:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-24 00:31:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-02-24 00:31:18,979 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 58 [2021-02-24 00:31:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:18,980 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-02-24 00:31:18,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-24 00:31:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-02-24 00:31:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 00:31:18,981 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:18,981 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:18,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-24 00:31:18,982 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:18,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1287750980, now seen corresponding path program 2 times [2021-02-24 00:31:18,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:18,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952674781] [2021-02-24 00:31:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:19,094 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:31:19,095 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:31:19,124 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:31:19,126 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:31:19,164 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:31:19,165 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:31:19,213 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:31:19,214 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:31:19,274 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:31:19,275 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:31:19,349 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:31:19,351 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:31:19,442 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:31:19,446 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:31:19,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:19,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:19,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:31:19,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:31:19,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:31:19,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:31:19,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:31:20,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:20,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:31:20,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:20,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:31:20,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:20,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:31:20,349 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:31:20,350 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:31:20,475 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:31:20,476 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:31:20,590 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:31:20,591 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:31:20,713 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.6 percent of original size [2021-02-24 00:31:20,715 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.6 percent of original size 166 [2021-02-24 00:31:20,895 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:31:20,899 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:31:21,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:21,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:21,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:21,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:21,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:21,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952674781] [2021-02-24 00:31:21,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:21,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-02-24 00:31:21,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997144585] [2021-02-24 00:31:21,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-24 00:31:21,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:21,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-24 00:31:21,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2021-02-24 00:31:21,384 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 28 states. [2021-02-24 00:31:21,734 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:31:21,934 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:31:22,165 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:31:22,406 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:31:22,661 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:31:22,922 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:31:23,305 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:31:23,595 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:31:23,992 WARN L202 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:31:24,265 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:31:24,645 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:31:24,915 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:31:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:26,743 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2021-02-24 00:31:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 00:31:26,744 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 62 [2021-02-24 00:31:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:26,745 INFO L225 Difference]: With dead ends: 102 [2021-02-24 00:31:26,745 INFO L226 Difference]: Without dead ends: 83 [2021-02-24 00:31:26,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=325, Invalid=2125, Unknown=0, NotChecked=0, Total=2450 [2021-02-24 00:31:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-24 00:31:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2021-02-24 00:31:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-24 00:31:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-02-24 00:31:26,777 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 62 [2021-02-24 00:31:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:26,778 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-02-24 00:31:26,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-24 00:31:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-02-24 00:31:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-24 00:31:26,778 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:26,779 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:26,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 00:31:26,779 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:26,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:26,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1128041942, now seen corresponding path program 3 times [2021-02-24 00:31:26,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:26,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625131708] [2021-02-24 00:31:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:26,865 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:31:26,866 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:31:26,900 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:31:26,901 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:31:26,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:26,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:26,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:26,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:26,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:26,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:26,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:27,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:27,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:27,109 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:27,110 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:31:27,235 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:31:27,236 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:31:27,463 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:31:27,465 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:31:27,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:31:27,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:27,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:27,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:27,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625131708] [2021-02-24 00:31:27,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:27,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-24 00:31:27,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778204689] [2021-02-24 00:31:27,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 00:31:27,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:27,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 00:31:27,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:31:27,941 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 16 states. [2021-02-24 00:31:28,277 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:31:29,894 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:31:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:30,662 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2021-02-24 00:31:30,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:31:30,663 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2021-02-24 00:31:30,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:30,664 INFO L225 Difference]: With dead ends: 99 [2021-02-24 00:31:30,664 INFO L226 Difference]: Without dead ends: 83 [2021-02-24 00:31:30,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:31:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-24 00:31:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2021-02-24 00:31:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-24 00:31:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-02-24 00:31:30,700 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 66 [2021-02-24 00:31:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:30,701 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-02-24 00:31:30,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 00:31:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-02-24 00:31:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-24 00:31:30,702 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:30,702 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:30,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-24 00:31:30,702 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:30,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:30,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1253730994, now seen corresponding path program 4 times [2021-02-24 00:31:30,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:30,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356959732] [2021-02-24 00:31:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:30,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:30,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:30,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:30,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:30,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:30,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:30,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:30,853 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:30,854 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:30,904 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:30,905 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:30,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:30,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:30,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:30,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356959732] [2021-02-24 00:31:30,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:30,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:31:30,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344351571] [2021-02-24 00:31:30,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:31:30,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:30,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:31:31,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:31:31,000 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2021-02-24 00:31:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:32,145 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2021-02-24 00:31:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:31:32,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2021-02-24 00:31:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:32,147 INFO L225 Difference]: With dead ends: 98 [2021-02-24 00:31:32,147 INFO L226 Difference]: Without dead ends: 82 [2021-02-24 00:31:32,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:31:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-24 00:31:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-02-24 00:31:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-24 00:31:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-24 00:31:32,188 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 67 [2021-02-24 00:31:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:32,189 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-24 00:31:32,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:31:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-24 00:31:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-24 00:31:32,190 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:32,190 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:32,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-24 00:31:32,190 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:32,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1190664528, now seen corresponding path program 5 times [2021-02-24 00:31:32,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:32,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255379555] [2021-02-24 00:31:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:32,313 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:31:32,314 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:31:32,342 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:31:32,343 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:31:32,376 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:31:32,379 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:31:32,434 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:31:32,436 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:31:32,503 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:31:32,505 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:31:32,581 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:31:32,583 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:31:32,676 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:31:32,677 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:31:32,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:32,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:32,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:32,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:32,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:32,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:31:32,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:32,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:31:33,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:31:33,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:31:33,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:31:33,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:31:33,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:31:33,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:31:33,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:31:33,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:31:33,808 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:31:33,810 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:31:33,947 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:31:33,948 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:31:34,078 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:31:34,079 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:31:34,217 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.6 percent of original size [2021-02-24 00:31:34,219 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.6 percent of original size 166 [2021-02-24 00:31:34,423 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:31:34,425 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:31:34,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:34,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:34,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:34,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:34,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:34,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:34,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255379555] [2021-02-24 00:31:34,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:34,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-02-24 00:31:34,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749760869] [2021-02-24 00:31:34,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-24 00:31:34,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:34,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-24 00:31:34,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:31:34,985 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2021-02-24 00:31:35,358 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:31:35,580 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:31:35,814 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:31:36,065 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:31:36,354 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:31:36,634 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:31:37,062 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:31:37,372 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:31:37,802 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:31:38,083 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:31:38,500 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:31:38,785 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:31:40,527 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:31:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:41,222 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2021-02-24 00:31:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-24 00:31:41,223 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 68 [2021-02-24 00:31:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:41,224 INFO L225 Difference]: With dead ends: 108 [2021-02-24 00:31:41,224 INFO L226 Difference]: Without dead ends: 89 [2021-02-24 00:31:41,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=348, Invalid=2514, Unknown=0, NotChecked=0, Total=2862 [2021-02-24 00:31:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-24 00:31:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2021-02-24 00:31:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-24 00:31:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-02-24 00:31:41,262 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 68 [2021-02-24 00:31:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:41,262 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-02-24 00:31:41,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-24 00:31:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-02-24 00:31:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-24 00:31:41,263 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:41,264 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:41,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-24 00:31:41,264 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:41,265 INFO L82 PathProgramCache]: Analyzing trace with hash -219988586, now seen corresponding path program 6 times [2021-02-24 00:31:41,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:41,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756993635] [2021-02-24 00:31:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:41,360 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:31:41,362 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:31:41,393 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:31:41,394 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:31:41,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:41,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:41,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:41,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:41,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:41,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:41,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:41,653 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:41,655 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:31:41,784 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:31:41,785 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:31:42,027 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:31:42,028 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:31:42,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:31:42,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:42,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:42,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:42,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:42,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756993635] [2021-02-24 00:31:42,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:42,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-24 00:31:42,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661702184] [2021-02-24 00:31:42,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 00:31:42,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:42,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 00:31:42,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:31:42,561 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 17 states. [2021-02-24 00:31:42,931 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:31:44,802 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:31:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:45,851 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2021-02-24 00:31:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 00:31:45,852 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2021-02-24 00:31:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:45,853 INFO L225 Difference]: With dead ends: 105 [2021-02-24 00:31:45,853 INFO L226 Difference]: Without dead ends: 89 [2021-02-24 00:31:45,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2021-02-24 00:31:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-24 00:31:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2021-02-24 00:31:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-24 00:31:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-02-24 00:31:45,891 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 72 [2021-02-24 00:31:45,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:45,892 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-02-24 00:31:45,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 00:31:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-02-24 00:31:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-02-24 00:31:45,893 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:45,893 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:45,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-24 00:31:45,893 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:45,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:45,894 INFO L82 PathProgramCache]: Analyzing trace with hash -661386042, now seen corresponding path program 7 times [2021-02-24 00:31:45,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:45,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810109140] [2021-02-24 00:31:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:45,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:45,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:45,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:45,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:45,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:45,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:46,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:46,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:46,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:46,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:46,083 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:46,084 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:46,150 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:46,152 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:46,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:46,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:46,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:46,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:46,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810109140] [2021-02-24 00:31:46,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:46,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:31:46,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385910945] [2021-02-24 00:31:46,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:31:46,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:46,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:31:46,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:46,277 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2021-02-24 00:31:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:47,633 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2021-02-24 00:31:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:31:47,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2021-02-24 00:31:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:47,638 INFO L225 Difference]: With dead ends: 102 [2021-02-24 00:31:47,638 INFO L226 Difference]: Without dead ends: 86 [2021-02-24 00:31:47,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:31:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-24 00:31:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-02-24 00:31:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-02-24 00:31:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-02-24 00:31:47,678 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 73 [2021-02-24 00:31:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:47,679 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-02-24 00:31:47,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:31:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-02-24 00:31:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-24 00:31:47,679 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:47,679 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:47,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-24 00:31:47,680 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:47,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1507921044, now seen corresponding path program 8 times [2021-02-24 00:31:47,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:47,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538042894] [2021-02-24 00:31:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:47,791 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:31:47,792 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:31:47,824 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:31:47,825 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:31:47,863 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:31:47,864 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:31:47,912 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:31:47,913 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:31:47,976 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:31:47,977 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:31:48,056 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:31:48,058 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:31:48,143 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:31:48,145 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:31:48,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:48,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:48,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:31:48,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:31:48,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:31:48,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:31:48,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:31:48,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:31:48,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:31:48,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:31:49,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:31:49,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:31:49,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:31:49,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:31:49,453 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:31:49,454 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:31:49,591 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:31:49,592 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:31:49,733 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:31:49,734 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:31:49,880 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size [2021-02-24 00:31:49,883 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size 165 [2021-02-24 00:31:50,091 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:31:50,093 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:31:50,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:50,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:50,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:50,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538042894] [2021-02-24 00:31:50,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:50,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-02-24 00:31:50,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340153368] [2021-02-24 00:31:50,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-24 00:31:50,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:50,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-24 00:31:50,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2021-02-24 00:31:50,671 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 32 states. [2021-02-24 00:31:51,051 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:31:51,281 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:31:51,530 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:31:51,794 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:31:52,070 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:31:52,355 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:31:52,812 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:31:53,142 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:31:53,619 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:31:53,920 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:31:54,369 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:31:54,667 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:31:56,723 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:31:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:57,774 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2021-02-24 00:31:57,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-24 00:31:57,776 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 75 [2021-02-24 00:31:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:57,777 INFO L225 Difference]: With dead ends: 101 [2021-02-24 00:31:57,777 INFO L226 Difference]: Without dead ends: 96 [2021-02-24 00:31:57,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=371, Invalid=2935, Unknown=0, NotChecked=0, Total=3306 [2021-02-24 00:31:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-24 00:31:57,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2021-02-24 00:31:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-24 00:31:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-02-24 00:31:57,821 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 75 [2021-02-24 00:31:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:57,821 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-02-24 00:31:57,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-02-24 00:31:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-02-24 00:31:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-02-24 00:31:57,822 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:57,822 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:57,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-24 00:31:57,823 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:57,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:57,823 INFO L82 PathProgramCache]: Analyzing trace with hash 804097106, now seen corresponding path program 9 times [2021-02-24 00:31:57,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:57,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688736948] [2021-02-24 00:31:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:57,925 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:31:57,927 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:31:57,963 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:31:57,964 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:31:58,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:58,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:58,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:58,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:58,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:58,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:58,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:58,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:58,286 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:58,288 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:31:58,421 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:31:58,422 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:31:58,625 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:31:58,627 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:31:58,898 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-02-24 00:31:58,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:31:58,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:59,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688736948] [2021-02-24 00:31:59,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:59,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:31:59,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530179596] [2021-02-24 00:31:59,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:31:59,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:59,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:31:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:31:59,218 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 18 states. [2021-02-24 00:31:59,606 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:32:01,580 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:32:01,874 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:32:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:02,859 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-02-24 00:32:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 00:32:02,861 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2021-02-24 00:32:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:02,862 INFO L225 Difference]: With dead ends: 112 [2021-02-24 00:32:02,862 INFO L226 Difference]: Without dead ends: 96 [2021-02-24 00:32:02,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-02-24 00:32:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-24 00:32:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-02-24 00:32:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-02-24 00:32:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2021-02-24 00:32:02,928 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 79 [2021-02-24 00:32:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:02,929 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2021-02-24 00:32:02,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:32:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2021-02-24 00:32:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-24 00:32:02,930 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:02,930 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:02,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-24 00:32:02,930 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1020499338, now seen corresponding path program 10 times [2021-02-24 00:32:02,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:02,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941583101] [2021-02-24 00:32:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:03,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:03,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:03,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:03,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:32:03,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:32:03,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:32:03,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:03,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:32:03,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:32:03,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:03,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:03,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:03,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:03,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:03,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:03,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:03,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:03,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:03,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:03,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:03,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:04,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:04,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:04,241 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-02-24 00:32:04,242 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size 40 [2021-02-24 00:32:04,355 WARN L141 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size [2021-02-24 00:32:04,356 WARN L147 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size 43 [2021-02-24 00:32:04,454 WARN L141 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size [2021-02-24 00:32:04,455 WARN L147 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size 47 [2021-02-24 00:32:04,556 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.3 percent of original size [2021-02-24 00:32:04,559 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.3 percent of original size 150 [2021-02-24 00:32:04,787 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-02-24 00:32:04,791 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:32:04,793 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:32:04,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:05,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:05,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:32:05,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941583101] [2021-02-24 00:32:05,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:05,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-02-24 00:32:05,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794047825] [2021-02-24 00:32:05,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-24 00:32:05,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:05,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-24 00:32:05,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2021-02-24 00:32:05,299 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 31 states. [2021-02-24 00:32:10,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:10,837 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-02-24 00:32:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-24 00:32:10,838 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 80 [2021-02-24 00:32:10,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:10,840 INFO L225 Difference]: With dead ends: 111 [2021-02-24 00:32:10,840 INFO L226 Difference]: Without dead ends: 106 [2021-02-24 00:32:10,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-02-24 00:32:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-24 00:32:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2021-02-24 00:32:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-24 00:32:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2021-02-24 00:32:10,901 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 80 [2021-02-24 00:32:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:10,902 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2021-02-24 00:32:10,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-24 00:32:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2021-02-24 00:32:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-24 00:32:10,902 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:10,903 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:10,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-24 00:32:10,903 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash 958918512, now seen corresponding path program 11 times [2021-02-24 00:32:10,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:10,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33325128] [2021-02-24 00:32:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:11,016 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:32:11,018 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:32:11,058 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:32:11,059 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:32:11,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:11,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:11,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:11,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:11,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:11,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:11,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:11,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:11,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:11,433 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:11,434 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:32:11,578 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:32:11,579 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:32:11,831 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:32:11,833 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:32:11,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:32:11,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:11,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:12,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:12,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:12,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:12,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:12,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 11 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:32:12,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33325128] [2021-02-24 00:32:12,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:12,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:32:12,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46339427] [2021-02-24 00:32:12,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:32:12,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:12,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:32:12,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:32:12,110 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand 18 states. [2021-02-24 00:32:12,523 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:32:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:15,382 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2021-02-24 00:32:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:32:15,383 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2021-02-24 00:32:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:15,385 INFO L225 Difference]: With dead ends: 120 [2021-02-24 00:32:15,385 INFO L226 Difference]: Without dead ends: 97 [2021-02-24 00:32:15,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:32:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-02-24 00:32:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2021-02-24 00:32:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-02-24 00:32:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2021-02-24 00:32:15,438 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 84 [2021-02-24 00:32:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:15,438 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2021-02-24 00:32:15,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:32:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2021-02-24 00:32:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-24 00:32:15,439 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:15,439 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:15,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-24 00:32:15,440 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:15,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:15,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1371395466, now seen corresponding path program 12 times [2021-02-24 00:32:15,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:15,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734695657] [2021-02-24 00:32:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:15,580 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:32:15,581 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:32:15,617 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:32:15,618 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:32:15,666 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:32:15,667 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:32:15,727 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:32:15,729 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:32:15,792 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:32:15,793 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:32:15,881 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:32:15,882 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:32:15,974 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:32:15,975 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:32:16,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:16,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:16,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:32:16,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:32:16,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:32:16,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:32:16,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:32:16,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:32:16,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:32:16,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:16,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:16,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:17,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:17,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:17,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:17,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:17,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:17,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:17,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:17,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:17,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:17,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:17,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:17,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:17,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:17,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:17,916 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:32:17,918 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:32:18,098 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:32:18,099 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:32:18,277 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:32:18,278 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:32:18,462 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size [2021-02-24 00:32:18,464 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size 190 [2021-02-24 00:32:18,766 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-02-24 00:32:18,770 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-02-24 00:32:18,773 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 178 [2021-02-24 00:32:19,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:19,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:19,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:19,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:19,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:19,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:19,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:19,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:19,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:19,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:32:19,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734695657] [2021-02-24 00:32:19,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:19,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-02-24 00:32:19,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391401155] [2021-02-24 00:32:19,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-24 00:32:19,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:19,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-24 00:32:19,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2021-02-24 00:32:19,563 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 36 states. [2021-02-24 00:32:20,008 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:32:20,267 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:32:20,548 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:32:20,844 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:32:21,158 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:32:21,466 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:32:21,996 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:32:22,352 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:32:22,894 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:32:23,226 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:32:23,752 WARN L202 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:32:24,075 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:32:27,465 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:32:27,690 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:32:28,083 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:32:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:28,924 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-02-24 00:32:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-24 00:32:28,926 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 86 [2021-02-24 00:32:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:28,927 INFO L225 Difference]: With dead ends: 112 [2021-02-24 00:32:28,927 INFO L226 Difference]: Without dead ends: 107 [2021-02-24 00:32:28,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=417, Invalid=3873, Unknown=0, NotChecked=0, Total=4290 [2021-02-24 00:32:28,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-24 00:32:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2021-02-24 00:32:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-02-24 00:32:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2021-02-24 00:32:28,984 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 86 [2021-02-24 00:32:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:28,984 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2021-02-24 00:32:28,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-02-24 00:32:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2021-02-24 00:32:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-24 00:32:28,985 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:28,985 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:28,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-02-24 00:32:28,985 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:28,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:28,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1982475868, now seen corresponding path program 13 times [2021-02-24 00:32:28,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:28,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880495905] [2021-02-24 00:32:28,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:29,125 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:32:29,127 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:32:29,162 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:32:29,163 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:32:29,208 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:32:29,209 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:32:29,263 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:32:29,264 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:32:29,340 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:32:29,340 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:32:29,428 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:32:29,432 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:32:29,544 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:32:29,545 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:32:29,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:29,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:29,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:29,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:29,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:29,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:32:29,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:29,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:32:29,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:29,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:32:30,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:32:30,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:32:30,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:32:30,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:32:30,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:30,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:30,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:30,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:30,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:31,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:31,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:31,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:31,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:31,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:31,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:31,869 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:32:31,871 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:32:32,080 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:32:32,082 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:32:32,272 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:32:32,273 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:32:32,465 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size [2021-02-24 00:32:32,467 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size 190 [2021-02-24 00:32:32,786 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-02-24 00:32:32,790 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-02-24 00:32:32,791 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 178 [2021-02-24 00:32:33,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:33,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:33,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:33,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:33,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:32:33,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880495905] [2021-02-24 00:32:33,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:33,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-02-24 00:32:33,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232212319] [2021-02-24 00:32:33,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-02-24 00:32:33,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:33,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-02-24 00:32:33,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1282, Unknown=0, NotChecked=0, Total=1406 [2021-02-24 00:32:33,611 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 38 states. [2021-02-24 00:32:34,101 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:32:34,387 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:32:34,684 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:32:34,995 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:32:35,315 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:32:35,631 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:32:36,200 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:32:36,580 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:32:37,163 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:32:37,510 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:32:38,103 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:32:38,461 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:32:42,942 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:32:43,250 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:32:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:44,183 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2021-02-24 00:32:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-24 00:32:44,184 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 90 [2021-02-24 00:32:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:44,186 INFO L225 Difference]: With dead ends: 130 [2021-02-24 00:32:44,186 INFO L226 Difference]: Without dead ends: 111 [2021-02-24 00:32:44,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=440, Invalid=4390, Unknown=0, NotChecked=0, Total=4830 [2021-02-24 00:32:44,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-24 00:32:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2021-02-24 00:32:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-24 00:32:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2021-02-24 00:32:44,251 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 90 [2021-02-24 00:32:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:44,251 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2021-02-24 00:32:44,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-02-24 00:32:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2021-02-24 00:32:44,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-02-24 00:32:44,251 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:44,252 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 8, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:44,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-02-24 00:32:44,252 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1090637634, now seen corresponding path program 14 times [2021-02-24 00:32:44,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:44,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127158648] [2021-02-24 00:32:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:44,382 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:32:44,384 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:32:44,427 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:32:44,429 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:32:44,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:44,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:44,981 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:44,983 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:32:45,177 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:32:45,179 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:32:45,448 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:32:45,450 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:32:45,881 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-02-24 00:32:45,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:45,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:32:45,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:45,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:46,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:46,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:46,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:46,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:46,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:32:46,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127158648] [2021-02-24 00:32:46,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:46,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-24 00:32:46,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983971992] [2021-02-24 00:32:46,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-24 00:32:46,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:46,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-24 00:32:46,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:32:46,292 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 21 states. [2021-02-24 00:32:46,743 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:32:50,073 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:32:50,476 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:32:51,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:51,761 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2021-02-24 00:32:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:32:51,763 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 94 [2021-02-24 00:32:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:51,764 INFO L225 Difference]: With dead ends: 127 [2021-02-24 00:32:51,764 INFO L226 Difference]: Without dead ends: 111 [2021-02-24 00:32:51,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2021-02-24 00:32:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-24 00:32:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2021-02-24 00:32:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-02-24 00:32:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2021-02-24 00:32:51,846 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 94 [2021-02-24 00:32:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:51,846 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2021-02-24 00:32:51,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-24 00:32:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2021-02-24 00:32:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-24 00:32:51,847 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:51,848 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:51,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-02-24 00:32:51,848 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1313321114, now seen corresponding path program 15 times [2021-02-24 00:32:51,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:51,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100945070] [2021-02-24 00:32:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:51,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:51,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:51,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:51,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:51,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:51,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:52,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:52,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:52,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:52,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:52,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:52,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:52,213 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:32:52,214 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:32:52,296 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:32:52,297 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:32:52,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 25 proven. 249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:32:52,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100945070] [2021-02-24 00:32:52,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:52,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-24 00:32:52,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613813280] [2021-02-24 00:32:52,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 00:32:52,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:52,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 00:32:52,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:32:52,433 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 15 states. [2021-02-24 00:32:55,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:55,289 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2021-02-24 00:32:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 00:32:55,291 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 95 [2021-02-24 00:32:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:55,293 INFO L225 Difference]: With dead ends: 124 [2021-02-24 00:32:55,293 INFO L226 Difference]: Without dead ends: 108 [2021-02-24 00:32:55,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-02-24 00:32:55,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-02-24 00:32:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2021-02-24 00:32:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-24 00:32:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-02-24 00:32:55,366 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 95 [2021-02-24 00:32:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:55,366 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-02-24 00:32:55,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 00:32:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-02-24 00:32:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-02-24 00:32:55,367 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:55,367 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 7, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:55,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-02-24 00:32:55,367 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:55,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2105078336, now seen corresponding path program 16 times [2021-02-24 00:32:55,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:55,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112783800] [2021-02-24 00:32:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:55,515 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:32:55,516 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:32:55,559 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:32:55,561 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:32:55,608 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:32:55,610 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:32:55,671 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:32:55,672 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:32:55,752 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:32:55,753 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:32:55,846 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:32:55,848 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:32:55,954 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:32:55,958 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:32:56,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:56,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:56,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:32:56,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:32:56,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:32:56,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:32:56,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:32:56,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:32:56,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:32:56,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:57,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:57,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:57,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:57,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:57,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:57,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:57,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:57,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:58,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:58,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:58,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:58,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:58,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:58,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:32:58,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:58,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:32:58,751 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:32:58,752 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:32:58,958 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:32:58,959 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:32:59,168 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:32:59,179 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:32:59,389 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size [2021-02-24 00:32:59,391 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size 165 [2021-02-24 00:32:59,687 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:32:59,689 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:32:59,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:59,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:00,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:00,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:33:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:00,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:00,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:33:00,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112783800] [2021-02-24 00:33:00,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:33:00,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-02-24 00:33:00,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062539478] [2021-02-24 00:33:00,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-02-24 00:33:00,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:33:00,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-02-24 00:33:00,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1430, Unknown=0, NotChecked=0, Total=1560 [2021-02-24 00:33:00,575 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 40 states. [2021-02-24 00:33:01,113 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:33:01,419 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:33:01,745 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:33:02,085 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:33:02,434 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:33:02,776 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:33:03,380 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:33:03,782 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:33:04,446 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:33:04,833 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:33:05,477 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:33:05,850 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:33:11,066 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:33:11,331 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:33:11,857 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:33:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:33:12,848 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2021-02-24 00:33:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-24 00:33:12,850 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 97 [2021-02-24 00:33:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:33:12,851 INFO L225 Difference]: With dead ends: 123 [2021-02-24 00:33:12,851 INFO L226 Difference]: Without dead ends: 118 [2021-02-24 00:33:12,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=463, Invalid=4939, Unknown=0, NotChecked=0, Total=5402 [2021-02-24 00:33:12,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-02-24 00:33:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2021-02-24 00:33:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-24 00:33:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2021-02-24 00:33:12,919 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 97 [2021-02-24 00:33:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:33:12,920 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2021-02-24 00:33:12,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-02-24 00:33:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2021-02-24 00:33:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-02-24 00:33:12,921 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:33:12,921 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 7, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:33:12,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-02-24 00:33:12,921 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:33:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:33:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1178336986, now seen corresponding path program 17 times [2021-02-24 00:33:12,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:33:12,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235880289] [2021-02-24 00:33:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:33:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:13,058 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:33:13,060 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:33:13,108 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:33:13,110 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:33:13,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:33:13,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:13,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:13,729 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size [2021-02-24 00:33:13,730 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 113 [2021-02-24 00:33:13,934 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-02-24 00:33:13,937 WARN L141 QuantifierPusher]: treesize reduction 9, result has 92.7 percent of original size [2021-02-24 00:33:13,938 WARN L147 QuantifierPusher]: treesize reduction 9, result has 92.7 percent of original size 115 [2021-02-24 00:33:14,193 WARN L141 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-02-24 00:33:14,194 WARN L147 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size 184 [2021-02-24 00:33:14,492 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2021-02-24 00:33:14,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:14,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:33:14,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:14,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:14,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:33:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:14,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:14,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:14,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:14,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:33:14,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235880289] [2021-02-24 00:33:14,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:33:14,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-24 00:33:14,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782793538] [2021-02-24 00:33:14,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-24 00:33:14,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:33:14,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-24 00:33:14,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2021-02-24 00:33:14,909 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 22 states. [2021-02-24 00:33:15,411 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:33:19,633 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:33:20,090 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:33:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:33:21,580 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2021-02-24 00:33:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:33:21,582 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 101 [2021-02-24 00:33:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:33:21,583 INFO L225 Difference]: With dead ends: 134 [2021-02-24 00:33:21,583 INFO L226 Difference]: Without dead ends: 118 [2021-02-24 00:33:21,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2021-02-24 00:33:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-02-24 00:33:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2021-02-24 00:33:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-02-24 00:33:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2021-02-24 00:33:21,662 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 101 [2021-02-24 00:33:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:33:21,662 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2021-02-24 00:33:21,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-24 00:33:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2021-02-24 00:33:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-02-24 00:33:21,663 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:33:21,663 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:33:21,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-02-24 00:33:21,664 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:33:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:33:21,664 INFO L82 PathProgramCache]: Analyzing trace with hash -305415370, now seen corresponding path program 18 times [2021-02-24 00:33:21,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:33:21,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314848458] [2021-02-24 00:33:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:33:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:21,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:21,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:21,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:21,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:33:21,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:21,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:21,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:21,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:33:21,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:21,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:33:21,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:21,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:33:21,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:21,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:33:22,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:33:22,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:33:22,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:22,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:22,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:22,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:22,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:22,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:22,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:22,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:22,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:22,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:22,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:23,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:23,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:23,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:23,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:23,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:23,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:23,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:23,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:23,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:23,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:24,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:24,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:24,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:24,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:24,267 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-02-24 00:33:24,268 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size 40 [2021-02-24 00:33:24,434 WARN L141 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size [2021-02-24 00:33:24,435 WARN L147 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size 43 [2021-02-24 00:33:24,588 WARN L141 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size [2021-02-24 00:33:24,589 WARN L147 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size 47 [2021-02-24 00:33:24,749 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.3 percent of original size [2021-02-24 00:33:24,751 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.3 percent of original size 150 [2021-02-24 00:33:25,061 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-02-24 00:33:25,066 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:33:25,071 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:33:25,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:25,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:25,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:25,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:25,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:25,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:33:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:25,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:25,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:33:25,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314848458] [2021-02-24 00:33:25,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:33:25,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2021-02-24 00:33:25,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327938482] [2021-02-24 00:33:25,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-02-24 00:33:25,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:33:25,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-02-24 00:33:25,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2021-02-24 00:33:25,796 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 39 states. [2021-02-24 00:33:27,580 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:33:27,821 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:33:28,292 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:33:35,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:33:35,708 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-02-24 00:33:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-24 00:33:35,710 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 102 [2021-02-24 00:33:35,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:33:35,711 INFO L225 Difference]: With dead ends: 133 [2021-02-24 00:33:35,711 INFO L226 Difference]: Without dead ends: 128 [2021-02-24 00:33:35,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=369, Invalid=5033, Unknown=0, NotChecked=0, Total=5402 [2021-02-24 00:33:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-02-24 00:33:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 119. [2021-02-24 00:33:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-02-24 00:33:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-02-24 00:33:35,801 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 102 [2021-02-24 00:33:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:33:35,802 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-02-24 00:33:35,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-02-24 00:33:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-02-24 00:33:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-02-24 00:33:35,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:33:35,803 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 10, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:33:35,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-02-24 00:33:35,803 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:33:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:33:35,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1057136868, now seen corresponding path program 19 times [2021-02-24 00:33:35,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:33:35,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256184780] [2021-02-24 00:33:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:33:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:35,932 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:33:35,934 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:33:35,975 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:33:35,976 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:33:36,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:33:36,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:36,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:33:36,678 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:33:36,680 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:33:36,892 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:33:36,894 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:33:37,271 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-02-24 00:33:37,276 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:33:37,278 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:33:37,721 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-02-24 00:33:37,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:37,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:33:37,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:37,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:33:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:38,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:38,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:38,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:38,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:33:38,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256184780] [2021-02-24 00:33:38,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:33:38,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-02-24 00:33:38,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036040769] [2021-02-24 00:33:38,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-24 00:33:38,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:33:38,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-24 00:33:38,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2021-02-24 00:33:38,174 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 23 states. [2021-02-24 00:33:38,692 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:33:43,555 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:33:44,022 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:33:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:33:45,105 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-02-24 00:33:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 00:33:45,107 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2021-02-24 00:33:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:33:45,109 INFO L225 Difference]: With dead ends: 144 [2021-02-24 00:33:45,109 INFO L226 Difference]: Without dead ends: 121 [2021-02-24 00:33:45,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2021-02-24 00:33:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-24 00:33:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-02-24 00:33:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-02-24 00:33:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2021-02-24 00:33:45,177 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 106 [2021-02-24 00:33:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:33:45,177 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2021-02-24 00:33:45,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-24 00:33:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2021-02-24 00:33:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-02-24 00:33:45,178 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:33:45,178 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 11, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:33:45,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-02-24 00:33:45,178 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:33:45,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:33:45,179 INFO L82 PathProgramCache]: Analyzing trace with hash 581690310, now seen corresponding path program 20 times [2021-02-24 00:33:45,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:33:45,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824249441] [2021-02-24 00:33:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:33:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:45,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:45,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:33:45,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:45,714 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:33:45,715 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:33:45,811 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:33:45,812 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:33:45,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:33:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:45,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:45,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 28 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:33:45,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824249441] [2021-02-24 00:33:45,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:33:45,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-24 00:33:45,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556383364] [2021-02-24 00:33:45,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 00:33:45,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:33:45,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 00:33:45,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:33:45,962 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand 17 states. [2021-02-24 00:33:49,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:33:49,848 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2021-02-24 00:33:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 00:33:49,851 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2021-02-24 00:33:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:33:49,852 INFO L225 Difference]: With dead ends: 136 [2021-02-24 00:33:49,852 INFO L226 Difference]: Without dead ends: 120 [2021-02-24 00:33:49,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2021-02-24 00:33:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-24 00:33:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-02-24 00:33:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-24 00:33:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2021-02-24 00:33:49,922 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 109 [2021-02-24 00:33:49,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:33:49,923 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2021-02-24 00:33:49,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 00:33:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2021-02-24 00:33:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-02-24 00:33:49,924 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:33:49,924 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 11, 8, 5, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:33:49,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-02-24 00:33:49,924 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:33:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:33:49,925 INFO L82 PathProgramCache]: Analyzing trace with hash -117302234, now seen corresponding path program 21 times [2021-02-24 00:33:49,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:33:49,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308987640] [2021-02-24 00:33:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:33:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:50,094 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:33:50,095 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:33:50,137 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:33:50,138 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:33:50,189 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:33:50,191 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:33:50,262 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:33:50,264 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:33:50,353 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:33:50,354 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:33:50,456 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:33:50,457 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:33:50,572 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:33:50,574 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:33:50,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:50,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:33:50,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:50,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:33:50,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:50,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:33:50,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:50,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:33:51,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:51,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:33:51,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:51,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:33:51,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:51,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:33:51,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:51,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:33:51,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:51,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:33:51,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:51,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:51,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:51,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:33:51,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:51,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:52,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:52,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:33:52,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:52,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:52,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:52,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:33:52,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:52,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:52,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:52,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:33:52,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:52,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:52,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:52,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:33:53,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:53,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:53,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:53,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:33:53,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:53,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:53,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:53,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:33:53,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:53,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:53,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:53,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:33:54,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:54,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:33:54,366 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:33:54,368 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:33:54,641 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:33:54,643 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:33:54,895 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:33:54,897 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:33:55,142 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.6 percent of original size [2021-02-24 00:33:55,147 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.6 percent of original size 166 [2021-02-24 00:33:55,498 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2021-02-24 00:33:55,502 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:33:55,504 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:33:55,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:55,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:55,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:55,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:56,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:56,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:33:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:56,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:56,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:56,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:56,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:33:56,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308987640] [2021-02-24 00:33:56,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:33:56,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-02-24 00:33:56,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519986935] [2021-02-24 00:33:56,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-02-24 00:33:56,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:33:56,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-02-24 00:33:56,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2021-02-24 00:33:56,670 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand 44 states. [2021-02-24 00:33:57,309 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:33:57,675 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:33:58,057 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:33:58,446 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:33:58,842 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:33:59,226 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:33:59,945 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:34:00,389 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:34:01,146 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:34:01,553 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:34:02,262 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:34:02,668 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:34:03,205 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:34:03,469 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:34:07,136 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:34:09,227 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:34:09,502 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:34:10,270 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:34:10,579 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:34:11,256 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:34:12,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:34:12,385 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2021-02-24 00:34:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-24 00:34:12,386 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 109 [2021-02-24 00:34:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:34:12,387 INFO L225 Difference]: With dead ends: 135 [2021-02-24 00:34:12,387 INFO L226 Difference]: Without dead ends: 130 [2021-02-24 00:34:12,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=509, Invalid=6133, Unknown=0, NotChecked=0, Total=6642 [2021-02-24 00:34:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-02-24 00:34:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2021-02-24 00:34:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-02-24 00:34:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2021-02-24 00:34:12,506 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 109 [2021-02-24 00:34:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:34:12,507 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2021-02-24 00:34:12,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-02-24 00:34:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2021-02-24 00:34:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-24 00:34:12,508 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:34:12,508 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 11, 8, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:34:12,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-02-24 00:34:12,509 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:34:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:34:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1757820916, now seen corresponding path program 22 times [2021-02-24 00:34:12,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:34:12,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385226768] [2021-02-24 00:34:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:34:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:12,665 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:34:12,666 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:34:12,712 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:34:12,714 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:34:12,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:12,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:34:12,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:12,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:12,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:12,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:12,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:12,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:12,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:12,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:12,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:12,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:12,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:12,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:13,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:13,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:13,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:13,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:13,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:13,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:13,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:13,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:13,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:13,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:13,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:13,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:13,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:13,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:34:13,543 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:34:13,545 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:34:13,742 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:34:13,744 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:34:14,095 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:34:14,100 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:34:14,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:14,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:34:14,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:14,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:34:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:14,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:14,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:14,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:14,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:34:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 17 proven. 424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:34:14,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385226768] [2021-02-24 00:34:14,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:34:14,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-02-24 00:34:14,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934555299] [2021-02-24 00:34:14,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-24 00:34:14,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:34:14,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-24 00:34:14,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2021-02-24 00:34:14,541 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand 23 states. [2021-02-24 00:34:15,113 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:34:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:34:21,518 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2021-02-24 00:34:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-24 00:34:21,521 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 113 [2021-02-24 00:34:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:34:21,522 INFO L225 Difference]: With dead ends: 143 [2021-02-24 00:34:21,522 INFO L226 Difference]: Without dead ends: 127 [2021-02-24 00:34:21,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2021-02-24 00:34:21,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-02-24 00:34:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-02-24 00:34:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-02-24 00:34:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-02-24 00:34:21,593 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 113 [2021-02-24 00:34:21,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:34:21,593 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-02-24 00:34:21,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-24 00:34:21,593 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-02-24 00:34:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-24 00:34:21,594 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:34:21,594 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 9, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:34:21,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-02-24 00:34:21,594 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:34:21,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:34:21,595 INFO L82 PathProgramCache]: Analyzing trace with hash 44274902, now seen corresponding path program 23 times [2021-02-24 00:34:21,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:34:21,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176514125] [2021-02-24 00:34:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:34:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:21,797 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:34:21,799 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:34:21,853 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:34:21,854 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:34:21,913 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:34:21,915 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:34:21,992 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:34:21,994 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:34:22,090 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:34:22,092 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:34:22,214 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:34:22,216 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:34:22,359 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-02-24 00:34:22,361 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:34:22,363 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:34:22,514 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:34:22,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:22,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:34:22,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:22,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:34:22,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:22,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:34:22,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:22,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:34:22,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:22,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:34:23,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:23,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:34:23,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:23,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:34:23,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:23,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:34:23,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:23,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:34:23,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:23,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:23,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:23,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:23,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:23,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:23,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:23,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:24,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:24,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:24,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:24,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:24,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:24,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:24,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:24,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:24,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:24,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:24,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:24,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:25,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:25,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:25,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:25,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:25,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:25,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:25,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:25,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:25,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:25,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:25,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:25,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:26,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:26,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:26,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:26,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:26,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:26,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:26,788 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:34:26,790 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:34:27,070 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:34:27,072 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:34:27,350 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:34:27,352 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:34:27,645 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size [2021-02-24 00:34:27,647 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size 190 [2021-02-24 00:34:28,106 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-02-24 00:34:28,111 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-02-24 00:34:28,113 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 178 [2021-02-24 00:34:28,499 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2021-02-24 00:34:28,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:28,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:34:28,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:28,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:34:28,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:28,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:34:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:29,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:29,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:29,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:29,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:34:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 463 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:34:29,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176514125] [2021-02-24 00:34:29,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:34:29,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-02-24 00:34:29,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835151198] [2021-02-24 00:34:29,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-02-24 00:34:29,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:34:29,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-02-24 00:34:29,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1922, Unknown=0, NotChecked=0, Total=2070 [2021-02-24 00:34:29,372 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 46 states. [2021-02-24 00:34:30,045 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:34:30,424 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:34:30,806 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:34:31,215 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:34:31,636 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:34:32,046 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:34:32,841 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:34:33,323 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:34:34,194 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:34:34,651 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:34:35,473 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:34:35,932 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:34:36,578 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:34:36,879 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:34:37,422 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:34:37,730 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:34:38,248 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:34:38,560 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:34:39,180 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:34:39,474 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:34:40,430 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:34:40,993 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:34:41,322 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:34:41,966 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:34:42,271 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:34:42,744 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:34:43,064 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:34:43,812 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:34:44,113 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:34:44,669 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:34:44,983 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:34:45,727 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:34:46,076 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:34:46,450 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:34:47,211 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:34:47,643 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:34:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:34:48,521 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-02-24 00:34:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-24 00:34:48,523 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 116 [2021-02-24 00:34:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:34:48,525 INFO L225 Difference]: With dead ends: 142 [2021-02-24 00:34:48,525 INFO L226 Difference]: Without dead ends: 137 [2021-02-24 00:34:48,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=532, Invalid=6778, Unknown=0, NotChecked=0, Total=7310 [2021-02-24 00:34:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-02-24 00:34:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 128. [2021-02-24 00:34:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-02-24 00:34:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2021-02-24 00:34:48,611 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 116 [2021-02-24 00:34:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:34:48,611 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2021-02-24 00:34:48,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-02-24 00:34:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2021-02-24 00:34:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-02-24 00:34:48,612 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:34:48,612 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 12, 9, 6, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:34:48,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-02-24 00:34:48,612 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:34:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:34:48,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1928369988, now seen corresponding path program 24 times [2021-02-24 00:34:48,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:34:48,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114167624] [2021-02-24 00:34:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:34:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:48,818 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:34:48,819 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:34:48,866 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:34:48,868 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:34:48,931 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:34:48,932 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:34:49,007 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:34:49,009 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:34:49,105 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:34:49,106 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:34:49,220 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:34:49,221 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:34:49,352 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-02-24 00:34:49,355 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:34:49,357 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:34:49,509 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:34:49,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:49,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:34:49,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:49,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:34:49,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:49,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:34:49,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:49,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:34:49,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:49,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:34:50,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:34:50,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:34:50,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:34:50,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:34:50,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:50,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:50,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:50,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:51,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:51,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:51,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:51,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:51,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:51,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:51,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:51,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:51,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:51,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:51,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:51,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:52,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:52,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:52,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:52,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:52,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:52,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:52,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:52,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:52,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:52,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:53,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:53,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:53,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:53,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:53,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:53,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:53,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:53,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:53,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:53,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:34:54,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:54,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:34:54,397 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:34:54,399 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:34:54,719 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2021-02-24 00:34:54,722 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:34:54,724 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:34:55,029 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:34:55,031 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:34:55,338 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size [2021-02-24 00:34:55,340 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size 190 [2021-02-24 00:34:55,872 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-02-24 00:34:55,877 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-02-24 00:34:55,879 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 178 [2021-02-24 00:34:56,296 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2021-02-24 00:34:56,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:56,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:34:56,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:56,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:34:56,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:56,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:34:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:56,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:56,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:56,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:56,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:34:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:34:57,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114167624] [2021-02-24 00:34:57,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:34:57,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-02-24 00:34:57,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787213858] [2021-02-24 00:34:57,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-02-24 00:34:57,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:34:57,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-02-24 00:34:57,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2102, Unknown=0, NotChecked=0, Total=2256 [2021-02-24 00:34:57,358 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand 48 states. [2021-02-24 00:34:58,093 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:34:58,488 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:34:58,899 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:34:59,330 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:34:59,769 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:35:00,216 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:35:01,089 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:35:01,617 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:35:02,580 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:35:03,075 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:35:03,986 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:35:04,473 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:35:05,157 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:35:05,485 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:06,046 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:06,361 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:06,868 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:35:07,190 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:07,890 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:08,208 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:35:09,277 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:10,178 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:10,845 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:11,143 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:35:11,600 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:35:11,905 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:12,692 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:35:13,015 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:35:13,614 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:13,948 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:14,744 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:15,059 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:15,816 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:16,140 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:16,534 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:35:17,034 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:35:17,464 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:35:18,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:35:18,362 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2021-02-24 00:35:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-24 00:35:18,364 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 120 [2021-02-24 00:35:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:35:18,366 INFO L225 Difference]: With dead ends: 160 [2021-02-24 00:35:18,366 INFO L226 Difference]: Without dead ends: 141 [2021-02-24 00:35:18,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=555, Invalid=7455, Unknown=0, NotChecked=0, Total=8010 [2021-02-24 00:35:18,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-24 00:35:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2021-02-24 00:35:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-02-24 00:35:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2021-02-24 00:35:18,456 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 120 [2021-02-24 00:35:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:35:18,457 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2021-02-24 00:35:18,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2021-02-24 00:35:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2021-02-24 00:35:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-02-24 00:35:18,457 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:35:18,458 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 12, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:35:18,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-02-24 00:35:18,458 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:35:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:35:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1811752542, now seen corresponding path program 25 times [2021-02-24 00:35:18,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:35:18,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096557316] [2021-02-24 00:35:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:35:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:18,611 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:35:18,612 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:35:18,665 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:35:18,667 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:35:18,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:18,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:35:18,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:18,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:18,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:18,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:18,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:18,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:18,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:18,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:18,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:18,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:18,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:18,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:19,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:35:19,831 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:35:19,833 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:35:20,119 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:35:20,121 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:35:20,591 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-02-24 00:35:20,596 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:35:20,597 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:35:21,222 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-02-24 00:35:21,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:21,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:35:21,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:21,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:35:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:21,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:21,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:21,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:21,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:35:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:35:21,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096557316] [2021-02-24 00:35:21,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:35:21,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-24 00:35:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433362105] [2021-02-24 00:35:21,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-24 00:35:21,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:35:21,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-24 00:35:21,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2021-02-24 00:35:21,828 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand 26 states. [2021-02-24 00:35:22,470 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:35:23,444 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:24,874 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:25,764 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:26,789 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:27,309 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:28,669 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:29,224 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:29,787 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:30,288 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:35:30,889 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:35:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:35:33,110 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2021-02-24 00:35:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-24 00:35:33,112 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 124 [2021-02-24 00:35:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:35:33,113 INFO L225 Difference]: With dead ends: 157 [2021-02-24 00:35:33,114 INFO L226 Difference]: Without dead ends: 141 [2021-02-24 00:35:33,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2021-02-24 00:35:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-24 00:35:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2021-02-24 00:35:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-24 00:35:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2021-02-24 00:35:33,192 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 124 [2021-02-24 00:35:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:35:33,192 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2021-02-24 00:35:33,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-24 00:35:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2021-02-24 00:35:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-24 00:35:33,193 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:35:33,193 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 9, 6, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:35:33,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-02-24 00:35:33,193 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:35:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:35:33,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1533538874, now seen corresponding path program 26 times [2021-02-24 00:35:33,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:35:33,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236264904] [2021-02-24 00:35:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:35:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:33,400 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:35:33,401 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:35:33,456 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:35:33,457 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:35:33,530 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:35:33,532 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:35:33,618 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:35:33,619 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:35:33,720 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:35:33,721 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:35:33,831 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:35:33,833 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:35:33,976 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-02-24 00:35:33,979 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:35:33,981 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:35:34,148 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:35:34,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:34,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:35:34,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:34,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:35:34,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:34,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:35:34,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:34,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:35:34,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:34,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:35:34,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:34,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:35:34,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:34,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:35:34,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:34,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:35:35,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:35,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:35:35,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:35,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:35,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:35,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:35,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:35,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:35,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:35,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:35,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:35,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:35,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:35,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:36,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:36,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:36,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:36,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:36,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:36,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:36,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:36,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:36,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:36,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:36,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:37,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:37,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:37,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:37,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:38,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:38,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:38,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:38,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:38,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:38,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:38,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:38,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:38,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:38,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:39,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:39,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:35:39,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:39,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:35:39,682 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:35:39,684 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:35:40,012 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:35:40,014 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:35:40,345 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:35:40,347 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:35:40,681 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size [2021-02-24 00:35:40,683 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size 190 [2021-02-24 00:35:41,221 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-02-24 00:35:41,225 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-02-24 00:35:41,228 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 178 [2021-02-24 00:35:41,729 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2021-02-24 00:35:41,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:41,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:35:41,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:41,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:35:42,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:42,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:42,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:35:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:42,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:42,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:42,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:42,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:35:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:35:42,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236264904] [2021-02-24 00:35:42,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:35:42,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-02-24 00:35:42,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198692882] [2021-02-24 00:35:42,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-02-24 00:35:42,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:35:42,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-02-24 00:35:42,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2290, Unknown=0, NotChecked=0, Total=2450 [2021-02-24 00:35:42,756 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 50 states. [2021-02-24 00:35:43,502 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:35:43,924 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:35:44,361 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:35:44,822 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:35:45,280 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:35:45,753 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:35:46,676 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:35:47,241 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:35:48,299 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:35:48,817 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:35:49,830 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:35:50,395 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:35:51,223 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:35:51,604 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:35:52,272 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:52,667 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:53,236 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:35:53,615 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:54,377 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:54,740 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:35:55,586 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:35:55,968 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:56,619 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:57,009 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:35:57,788 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:35:58,167 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:35:58,721 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:35:59,132 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:36:00,032 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:00,397 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:36:01,035 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:36:01,423 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:36:02,314 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:36:02,686 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:36:03,579 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:36:03,975 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:36:04,523 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:36:04,951 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:36:05,404 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:36:06,105 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:36:06,663 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:36:07,314 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:36:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:36:07,643 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2021-02-24 00:36:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-02-24 00:36:07,646 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 125 [2021-02-24 00:36:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:36:07,648 INFO L225 Difference]: With dead ends: 165 [2021-02-24 00:36:07,648 INFO L226 Difference]: Without dead ends: 146 [2021-02-24 00:36:07,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=578, Invalid=8164, Unknown=0, NotChecked=0, Total=8742 [2021-02-24 00:36:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-02-24 00:36:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 137. [2021-02-24 00:36:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-02-24 00:36:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-02-24 00:36:07,738 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 125 [2021-02-24 00:36:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:36:07,739 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-02-24 00:36:07,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2021-02-24 00:36:07,739 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-02-24 00:36:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-02-24 00:36:07,739 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:36:07,740 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 13, 9, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:36:07,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-02-24 00:36:07,740 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:36:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:36:07,740 INFO L82 PathProgramCache]: Analyzing trace with hash 132019232, now seen corresponding path program 27 times [2021-02-24 00:36:07,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:36:07,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557649719] [2021-02-24 00:36:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:36:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:07,907 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:36:07,909 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:36:07,976 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:36:07,978 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:36:08,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:36:08,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:08,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:08,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:09,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:09,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:09,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:09,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:09,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:09,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:09,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:09,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:36:09,508 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:36:09,509 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:36:09,845 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-02-24 00:36:09,849 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:36:09,851 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:36:10,440 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-02-24 00:36:10,444 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:36:10,446 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:36:11,131 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-02-24 00:36:11,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:11,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:36:11,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:11,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:36:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:11,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:11,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:11,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:11,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:36:11,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557649719] [2021-02-24 00:36:11,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:36:11,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-02-24 00:36:11,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529965176] [2021-02-24 00:36:11,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-24 00:36:11,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:36:11,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-24 00:36:11,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2021-02-24 00:36:11,814 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand 27 states. [2021-02-24 00:36:12,548 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:36:13,120 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:36:13,668 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:14,269 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:14,824 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:36:15,309 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:15,732 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:16,293 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:16,908 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:17,425 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:17,985 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:18,414 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:19,037 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:19,541 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:20,198 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:20,857 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:21,298 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:36:22,004 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:36:22,720 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:36:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:36:24,726 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-02-24 00:36:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-24 00:36:24,728 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 129 [2021-02-24 00:36:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:36:24,730 INFO L225 Difference]: With dead ends: 161 [2021-02-24 00:36:24,730 INFO L226 Difference]: Without dead ends: 145 [2021-02-24 00:36:24,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=199, Invalid=1963, Unknown=0, NotChecked=0, Total=2162 [2021-02-24 00:36:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-02-24 00:36:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2021-02-24 00:36:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-02-24 00:36:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2021-02-24 00:36:24,813 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 129 [2021-02-24 00:36:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:36:24,813 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2021-02-24 00:36:24,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-24 00:36:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2021-02-24 00:36:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-02-24 00:36:24,814 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:36:24,814 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 14, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:36:24,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-02-24 00:36:24,814 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:36:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:36:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1452653786, now seen corresponding path program 28 times [2021-02-24 00:36:24,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:36:24,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080435710] [2021-02-24 00:36:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:36:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:25,008 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:36:25,010 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:36:25,078 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:36:25,080 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:36:25,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:36:25,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:25,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:36:25,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:25,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:25,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:25,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:25,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:25,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:25,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:25,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:25,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:26,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:26,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:26,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:26,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:26,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:26,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:26,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:26,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:26,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:26,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:26,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:26,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:36:26,925 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:36:26,928 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 110 [2021-02-24 00:36:27,313 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2021-02-24 00:36:27,318 WARN L141 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size [2021-02-24 00:36:27,319 WARN L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 109 [2021-02-24 00:36:27,817 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2021-02-24 00:36:27,820 WARN L141 QuantifierPusher]: treesize reduction 12, result has 67.6 percent of original size [2021-02-24 00:36:27,822 WARN L147 QuantifierPusher]: treesize reduction 12, result has 67.6 percent of original size 25 [2021-02-24 00:36:27,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:27,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:36:27,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:27,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:28,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:36:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:28,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:28,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:28,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:28,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 38 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:36:28,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080435710] [2021-02-24 00:36:28,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:36:28,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-24 00:36:28,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057397152] [2021-02-24 00:36:28,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-24 00:36:28,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:36:28,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-24 00:36:28,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:36:28,382 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand 25 states. [2021-02-24 00:36:29,181 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:36:29,812 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:36:30,635 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:36:31,462 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:36:32,189 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:32,860 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:33,393 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:34,067 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:34,871 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:35,479 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:36,199 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:36,826 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:37,703 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:38,366 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:39,276 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:40,107 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:40,711 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:36:41,530 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:36:42,093 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-02-24 00:36:43,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:36:43,195 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2021-02-24 00:36:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-24 00:36:43,198 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 131 [2021-02-24 00:36:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:36:43,200 INFO L225 Difference]: With dead ends: 160 [2021-02-24 00:36:43,200 INFO L226 Difference]: Without dead ends: 144 [2021-02-24 00:36:43,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2021-02-24 00:36:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-02-24 00:36:43,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2021-02-24 00:36:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-02-24 00:36:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 144 transitions. [2021-02-24 00:36:43,308 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 144 transitions. Word has length 131 [2021-02-24 00:36:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:36:43,309 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 144 transitions. [2021-02-24 00:36:43,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-24 00:36:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2021-02-24 00:36:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-02-24 00:36:43,310 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:36:43,310 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 14, 10, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:36:43,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-02-24 00:36:43,310 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:36:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:36:43,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1840808002, now seen corresponding path program 29 times [2021-02-24 00:36:43,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:36:43,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634114602] [2021-02-24 00:36:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:36:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:43,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:43,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:36:43,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:43,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:43,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:44,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:44,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:44,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:44,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:44,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:44,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:44,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:44,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:44,404 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:36:44,406 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:36:44,552 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:36:44,553 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:36:44,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:44,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:44,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:36:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:44,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:44,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 37 proven. 621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:36:44,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634114602] [2021-02-24 00:36:44,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:36:44,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-24 00:36:44,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386308706] [2021-02-24 00:36:44,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-24 00:36:44,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:36:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-24 00:36:44,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:36:44,779 INFO L87 Difference]: Start difference. First operand 140 states and 144 transitions. Second operand 21 states. [2021-02-24 00:36:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:36:52,771 INFO L93 Difference]: Finished difference Result 159 states and 168 transitions. [2021-02-24 00:36:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-24 00:36:52,774 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 132 [2021-02-24 00:36:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:36:52,775 INFO L225 Difference]: With dead ends: 159 [2021-02-24 00:36:52,775 INFO L226 Difference]: Without dead ends: 143 [2021-02-24 00:36:52,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2021-02-24 00:36:52,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-02-24 00:36:52,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-02-24 00:36:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-24 00:36:52,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2021-02-24 00:36:52,880 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 132 [2021-02-24 00:36:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:36:52,880 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2021-02-24 00:36:52,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-24 00:36:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2021-02-24 00:36:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-02-24 00:36:52,881 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:36:52,881 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 14, 10, 7, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:36:52,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-02-24 00:36:52,881 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:36:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:36:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1141815458, now seen corresponding path program 30 times [2021-02-24 00:36:52,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:36:52,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194267660] [2021-02-24 00:36:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:36:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:53,107 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:36:53,109 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:36:53,184 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:36:53,187 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:36:53,289 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:36:53,291 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:36:53,419 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-02-24 00:36:53,423 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:36:53,425 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:36:53,551 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:36:53,553 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:36:53,691 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-02-24 00:36:53,695 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:36:53,696 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:36:53,856 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-02-24 00:36:53,860 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:36:53,861 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:36:54,027 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:36:54,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:54,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:36:54,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:54,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:36:54,239 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-02-24 00:36:54,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:54,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:36:54,399 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-02-24 00:36:54,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:54,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:36:54,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:54,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:36:54,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:54,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:36:54,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:54,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:36:54,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:54,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:36:55,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:55,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:36:55,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:55,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:55,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:55,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:55,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:55,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:55,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:55,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:55,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:55,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:56,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:56,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:56,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:56,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:56,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:56,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:56,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:56,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:56,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:56,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:56,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:56,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:57,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:57,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:57,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:57,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:57,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:57,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:57,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:57,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:58,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:58,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:58,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:58,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:58,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:58,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:58,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:58,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:59,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:59,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:59,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:59,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:36:59,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:59,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:36:59,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:00,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:37:00,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:00,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:37:00,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:00,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:37:00,886 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:37:00,888 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:37:01,300 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2021-02-24 00:37:01,304 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:37:01,306 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:37:01,712 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:37:01,714 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:37:02,128 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size [2021-02-24 00:37:02,131 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size 190 [2021-02-24 00:37:02,763 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-02-24 00:37:02,768 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-02-24 00:37:02,771 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 178 [2021-02-24 00:37:03,491 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2021-02-24 00:37:03,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:03,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:37:03,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:03,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:37:03,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:03,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:37:04,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:37:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:37:04,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:04,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:37:04,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:04,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:37:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:37:04,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194267660] [2021-02-24 00:37:04,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:37:04,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-02-24 00:37:04,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526399566] [2021-02-24 00:37:04,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-02-24 00:37:04,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:37:04,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-02-24 00:37:04,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2486, Unknown=0, NotChecked=0, Total=2652 [2021-02-24 00:37:04,674 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 52 states. [2021-02-24 00:37:05,578 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:37:06,073 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:37:06,576 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:37:07,139 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:37:07,726 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:37:08,269 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:37:09,281 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:37:09,930 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:37:11,206 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:37:11,806 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:37:12,986 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:37:13,583 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:37:14,552 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:37:14,974 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:15,704 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:16,116 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:16,772 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:37:17,182 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:18,064 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:18,453 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:37:19,446 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:37:19,855 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:20,613 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:21,039 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:21,921 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:22,329 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:37:22,965 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:37:23,391 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:24,434 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:37:24,832 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:37:25,572 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:25,992 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:27,065 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:27,493 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:28,532 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:28,943 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:29,587 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:30,009 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:30,788 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:37:31,220 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:37:31,714 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:37:32,918 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:37:33,531 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:37:33,916 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:37:34,291 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:37:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:37:34,721 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2021-02-24 00:37:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-24 00:37:34,725 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 132 [2021-02-24 00:37:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:37:34,727 INFO L225 Difference]: With dead ends: 158 [2021-02-24 00:37:34,727 INFO L226 Difference]: Without dead ends: 153 [2021-02-24 00:37:34,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=601, Invalid=8905, Unknown=0, NotChecked=0, Total=9506 [2021-02-24 00:37:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-02-24 00:37:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 144. [2021-02-24 00:37:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-02-24 00:37:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2021-02-24 00:37:34,817 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 132 [2021-02-24 00:37:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:37:34,818 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2021-02-24 00:37:34,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-02-24 00:37:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2021-02-24 00:37:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-02-24 00:37:34,819 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:37:34,819 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 14, 10, 7, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:37:34,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-02-24 00:37:34,819 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:37:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:37:34,820 INFO L82 PathProgramCache]: Analyzing trace with hash 426493576, now seen corresponding path program 31 times [2021-02-24 00:37:34,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:37:34,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27836882] [2021-02-24 00:37:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:37:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:37:35,007 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:37:35,010 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:37:35,082 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:37:35,084 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:37:35,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:37:35,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:35,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:35,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:36,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:36,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:36,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:36,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:36,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:36,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:36,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:36,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:36,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:36,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:37:36,716 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:37:36,720 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 97 [2021-02-24 00:37:37,154 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-02-24 00:37:37,159 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:37:37,161 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:37:37,782 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-02-24 00:37:37,786 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:37:37,788 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:37:38,594 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2021-02-24 00:37:38,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:38,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:37:38,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:38,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:37:39,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:37:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:37:39,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:39,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:37:39,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:39,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:37:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 719 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:37:39,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27836882] [2021-02-24 00:37:39,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:37:39,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-02-24 00:37:39,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912168894] [2021-02-24 00:37:39,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-24 00:37:39,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:37:39,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-24 00:37:39,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2021-02-24 00:37:39,318 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand 28 states. [2021-02-24 00:37:40,138 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:37:40,782 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:37:41,435 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:42,136 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:42,791 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:37:43,355 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:43,846 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:44,505 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:45,279 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:45,857 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:46,529 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:47,076 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:47,928 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:48,552 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:49,337 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:50,073 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:50,538 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:51,144 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:37:52,226 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:37:52,902 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 00:37:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:37:55,306 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2021-02-24 00:37:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 00:37:55,310 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 136 [2021-02-24 00:37:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:37:55,311 INFO L225 Difference]: With dead ends: 168 [2021-02-24 00:37:55,311 INFO L226 Difference]: Without dead ends: 152 [2021-02-24 00:37:55,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2021-02-24 00:37:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-02-24 00:37:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2021-02-24 00:37:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-02-24 00:37:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2021-02-24 00:37:55,444 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 136 [2021-02-24 00:37:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:37:55,445 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2021-02-24 00:37:55,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-24 00:37:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2021-02-24 00:37:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-02-24 00:37:55,446 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:37:55,446 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 11, 7, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:37:55,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-02-24 00:37:55,446 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:37:55,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:37:55,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1930650738, now seen corresponding path program 32 times [2021-02-24 00:37:55,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:37:55,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987799641] [2021-02-24 00:37:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:37:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:37:55,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:55,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:37:55,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:55,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:37:55,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:55,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:37:55,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:55,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:37:55,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:55,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:37:55,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:55,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:37:55,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:55,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:37:55,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:55,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:37:56,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:56,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:37:56,171 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2021-02-24 00:37:56,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:56,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:56,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:56,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:56,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:56,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:56,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:56,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:56,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:56,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:56,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:56,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:56,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:56,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:57,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:57,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:57,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:57,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:57,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:57,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:57,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:57,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:57,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:57,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:57,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:57,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:57,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:57,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:57,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:57,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:58,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:58,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:58,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:58,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:58,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:58,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:58,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:58,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:58,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:58,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:58,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:58,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:59,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:59,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:59,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:59,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:59,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:59,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:37:59,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:59,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:37:59,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:59,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:38:00,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:00,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:38:00,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:00,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:38:00,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:00,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:38:00,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:00,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:38:00,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:00,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:38:01,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:01,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:38:01,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:01,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:38:01,617 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-02-24 00:38:01,619 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size 40 [2021-02-24 00:38:01,960 WARN L141 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size [2021-02-24 00:38:01,961 WARN L147 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size 43 [2021-02-24 00:38:02,252 WARN L141 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size [2021-02-24 00:38:02,254 WARN L147 QuantifierPusher]: treesize reduction 7, result has 87.0 percent of original size 47 [2021-02-24 00:38:02,557 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.3 percent of original size [2021-02-24 00:38:02,560 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.3 percent of original size 150 [2021-02-24 00:38:03,161 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-02-24 00:38:03,165 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:38:03,168 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:38:03,720 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2021-02-24 00:38:03,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:03,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:38:03,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:03,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:38:04,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:04,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:38:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:38:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:38:04,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:04,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:38:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:38:04,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987799641] [2021-02-24 00:38:04,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:38:04,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-02-24 00:38:04,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890526844] [2021-02-24 00:38:04,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-02-24 00:38:04,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:38:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-02-24 00:38:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2384, Unknown=0, NotChecked=0, Total=2550 [2021-02-24 00:38:04,587 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand 51 states. [2021-02-24 00:38:05,824 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:38:06,212 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-24 00:38:06,584 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:06,921 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-02-24 00:38:07,841 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:38:08,231 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:38:09,095 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:38:09,481 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:38:10,375 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:38:10,762 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:11,515 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:11,862 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-02-24 00:38:12,447 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:12,792 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:13,294 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:13,637 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:14,320 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:14,668 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:15,450 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:15,786 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:16,393 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:16,721 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:17,414 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:17,744 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:18,268 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:18,606 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:19,381 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:19,719 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:20,320 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:20,668 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:21,487 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:21,832 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:22,633 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:23,005 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:23,591 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:23,927 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:24,535 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:24,875 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 00:38:25,705 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:38:26,049 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:38:26,385 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:38:27,100 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:38:27,808 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:38:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:38:29,123 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2021-02-24 00:38:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-24 00:38:29,128 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 138 [2021-02-24 00:38:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:38:29,130 INFO L225 Difference]: With dead ends: 167 [2021-02-24 00:38:29,130 INFO L226 Difference]: Without dead ends: 162 [2021-02-24 00:38:29,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=471, Invalid=9035, Unknown=0, NotChecked=0, Total=9506 [2021-02-24 00:38:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-02-24 00:38:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2021-02-24 00:38:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-02-24 00:38:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2021-02-24 00:38:29,245 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 138 [2021-02-24 00:38:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:38:29,245 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 159 transitions. [2021-02-24 00:38:29,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-02-24 00:38:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 159 transitions. [2021-02-24 00:38:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-24 00:38:29,245 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:38:29,246 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 15, 11, 7, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:38:29,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-02-24 00:38:29,246 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:38:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:38:29,246 INFO L82 PathProgramCache]: Analyzing trace with hash 696669044, now seen corresponding path program 33 times [2021-02-24 00:38:29,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:38:29,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693201420] [2021-02-24 00:38:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:38:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:38:29,428 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:38:29,430 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:38:29,525 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:38:29,527 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:38:29,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:29,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:38:29,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:29,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:29,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:29,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:29,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:29,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:29,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:29,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:29,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:29,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:29,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:29,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:30,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:30,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:31,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:31,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:31,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:31,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:31,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:31,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:38:31,474 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size [2021-02-24 00:38:31,476 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 113 [2021-02-24 00:38:31,863 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 14 [2021-02-24 00:38:31,867 WARN L141 QuantifierPusher]: treesize reduction 9, result has 92.7 percent of original size [2021-02-24 00:38:31,869 WARN L147 QuantifierPusher]: treesize reduction 9, result has 92.7 percent of original size 115 [2021-02-24 00:38:32,556 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2021-02-24 00:38:32,560 WARN L141 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-02-24 00:38:32,562 WARN L147 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size 184 [2021-02-24 00:38:32,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:32,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:38:32,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:32,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:38:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:38:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:38:33,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:33,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:38:33,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:33,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:38:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 23 proven. 781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:38:33,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693201420] [2021-02-24 00:38:33,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:38:33,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-02-24 00:38:33,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780763351] [2021-02-24 00:38:33,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-24 00:38:33,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:38:33,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-24 00:38:33,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2021-02-24 00:38:33,310 INFO L87 Difference]: Start difference. First operand 153 states and 159 transitions. Second operand 28 states. [2021-02-24 00:38:33,595 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-24 00:38:34,227 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:38:34,923 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:38:35,570 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:36,284 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:37,004 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-24 00:38:37,602 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:38,106 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:38,766 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:39,570 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:40,230 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:40,902 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:41,411 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:42,195 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:42,829 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:43,590 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:44,367 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:44,889 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:45,490 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:46,255 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:46,941 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:38:47,356 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:38:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:38:48,348 INFO L93 Difference]: Finished difference Result 177 states and 191 transitions. [2021-02-24 00:38:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 00:38:48,352 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 142 [2021-02-24 00:38:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:38:48,353 INFO L225 Difference]: With dead ends: 177 [2021-02-24 00:38:48,353 INFO L226 Difference]: Without dead ends: 156 [2021-02-24 00:38:48,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=212, Invalid=2238, Unknown=0, NotChecked=0, Total=2450 [2021-02-24 00:38:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-02-24 00:38:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2021-02-24 00:38:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-02-24 00:38:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2021-02-24 00:38:48,460 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 142 [2021-02-24 00:38:48,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:38:48,460 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2021-02-24 00:38:48,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-24 00:38:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2021-02-24 00:38:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-02-24 00:38:48,461 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:38:48,461 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 16, 12, 8, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:38:48,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-02-24 00:38:48,462 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:38:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:38:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash -762533682, now seen corresponding path program 34 times [2021-02-24 00:38:48,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:38:48,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46003571] [2021-02-24 00:38:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:38:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:38:48,710 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:38:48,712 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:38:48,788 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:38:48,791 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:38:48,889 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:38:48,891 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:38:49,015 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-02-24 00:38:49,019 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:38:49,021 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:38:49,168 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2021-02-24 00:38:49,173 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:38:49,175 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:38:49,365 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-02-24 00:38:49,369 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:38:49,371 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:38:49,563 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-02-24 00:38:49,567 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:38:49,569 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:38:49,771 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:38:49,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:49,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:38:49,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:49,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:38:49,989 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-02-24 00:38:49,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:49,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:38:50,150 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-02-24 00:38:50,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:50,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:38:50,311 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-02-24 00:38:50,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:50,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:38:50,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:50,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:38:50,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:50,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:38:50,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:50,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:38:50,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:50,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:38:51,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:51,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:51,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:51,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:51,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:51,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:51,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:51,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:51,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:51,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:52,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:52,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:52,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:52,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:52,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:52,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:52,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:52,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:52,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:52,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:53,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:53,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:53,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:53,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:53,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:53,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:53,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:53,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:54,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:54,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:54,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:54,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:54,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:54,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:54,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:54,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:55,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:55,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:55,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:55,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:55,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:55,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:56,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:56,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:56,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:56,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:56,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:56,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:57,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:57,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:57,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:57,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:57,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:57,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:58,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:58,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:38:58,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:38:58,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:38:59,124 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:38:59,127 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:38:59,687 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2021-02-24 00:38:59,692 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:38:59,694 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:39:00,234 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:39:00,235 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:39:00,764 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.6 percent of original size [2021-02-24 00:39:00,767 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.6 percent of original size 166 [2021-02-24 00:39:01,539 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2021-02-24 00:39:01,544 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:39:01,547 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:39:02,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:02,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:39:02,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:02,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:39:02,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:02,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:39:03,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:39:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:39:03,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:03,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:39:03,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:03,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:39:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 0 proven. 838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:39:03,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46003571] [2021-02-24 00:39:03,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:39:03,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2021-02-24 00:39:03,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483479200] [2021-02-24 00:39:03,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-02-24 00:39:03,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:39:03,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-02-24 00:39:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2902, Unknown=0, NotChecked=0, Total=3080 [2021-02-24 00:39:03,612 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand 56 states. [2021-02-24 00:39:04,679 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:39:05,261 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:39:05,860 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:39:06,482 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:39:07,093 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:39:07,649 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:39:08,884 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:39:09,613 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:39:11,058 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:39:11,726 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:39:13,057 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:39:13,730 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:39:14,898 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:39:15,396 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:39:16,300 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:16,821 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:17,678 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:39:18,166 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:19,285 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:19,805 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:39:21,091 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:39:21,589 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:22,565 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:23,071 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:24,174 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:24,646 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:39:25,423 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:39:25,939 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:27,236 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:39:27,709 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:39:28,611 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:29,137 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:30,438 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:30,966 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:32,303 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:32,835 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:33,640 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:34,150 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:35,139 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:35,688 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:37,179 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:39:37,660 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:39:38,718 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:39:39,254 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:39:39,860 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:39:41,363 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:39:42,112 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:39:42,569 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:39:43,003 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:39:43,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:39:43,544 INFO L93 Difference]: Finished difference Result 171 states and 179 transitions. [2021-02-24 00:39:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-02-24 00:39:43,549 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 145 [2021-02-24 00:39:43,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:39:43,551 INFO L225 Difference]: With dead ends: 171 [2021-02-24 00:39:43,551 INFO L226 Difference]: Without dead ends: 166 [2021-02-24 00:39:43,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1790 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=647, Invalid=10483, Unknown=0, NotChecked=0, Total=11130 [2021-02-24 00:39:43,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-02-24 00:39:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 157. [2021-02-24 00:39:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-02-24 00:39:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2021-02-24 00:39:43,665 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 145 [2021-02-24 00:39:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:39:43,666 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2021-02-24 00:39:43,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2021-02-24 00:39:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2021-02-24 00:39:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-02-24 00:39:43,667 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:39:43,667 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 16, 12, 8, 6, 6, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:39:43,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-02-24 00:39:43,667 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:39:43,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:39:43,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1507705012, now seen corresponding path program 35 times [2021-02-24 00:39:43,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:39:43,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029029843] [2021-02-24 00:39:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:39:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:39:43,920 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:39:43,922 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:39:44,005 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:39:44,007 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:39:44,105 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:39:44,107 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:39:44,225 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:39:44,227 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:39:44,373 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2021-02-24 00:39:44,378 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:39:44,379 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:39:44,545 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-02-24 00:39:44,550 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:39:44,552 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:39:44,734 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-02-24 00:39:44,738 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:39:44,741 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:39:44,948 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:39:44,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:44,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:39:45,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:45,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:39:45,175 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-02-24 00:39:45,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:45,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:39:45,343 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-02-24 00:39:45,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:45,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:39:45,515 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-02-24 00:39:45,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:45,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:39:45,692 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-02-24 00:39:45,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:45,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:39:45,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:45,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:39:46,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:46,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:39:46,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:46,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:39:46,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:46,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:46,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:46,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:46,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:46,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:46,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:46,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:47,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:47,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:47,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:47,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:47,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:47,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:47,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:47,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:48,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:48,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:48,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:48,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:48,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:48,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:48,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:48,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:49,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:49,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:49,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:49,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:49,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:49,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:49,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:49,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:50,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:50,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:50,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:50,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:50,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:50,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:51,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:51,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:51,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:51,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:51,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:51,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:52,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:52,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:52,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:52,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:52,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:52,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:53,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:53,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:53,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:53,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:54,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:54,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:54,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:54,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:54,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:54,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:39:55,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:55,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:39:55,674 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:39:55,676 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:39:56,319 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2021-02-24 00:39:56,324 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:39:56,326 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:39:56,906 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:39:56,908 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:39:57,523 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-02-24 00:39:57,530 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size [2021-02-24 00:39:57,533 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size 165 [2021-02-24 00:39:58,219 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2021-02-24 00:39:58,225 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:39:58,228 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:39:58,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:58,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:39:59,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:59,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:39:59,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:59,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:39:59,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:39:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:39:59,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:59,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:39:59,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:39:59,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:40:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:40:00,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029029843] [2021-02-24 00:40:00,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:40:00,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2021-02-24 00:40:00,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173956330] [2021-02-24 00:40:00,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-02-24 00:40:00,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:40:00,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-02-24 00:40:00,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3122, Unknown=0, NotChecked=0, Total=3306 [2021-02-24 00:40:00,486 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 58 states. [2021-02-24 00:40:00,871 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-24 00:40:01,607 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:40:02,211 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:40:02,837 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:40:03,492 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:40:04,154 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:40:04,763 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:40:06,096 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:40:06,877 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:40:08,514 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:40:09,228 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:40:10,755 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:40:11,510 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:40:12,735 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:40:13,261 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:40:14,239 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:14,786 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:15,670 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:40:16,295 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:17,538 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:18,048 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:40:19,345 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:40:19,898 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:20,909 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:21,459 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:22,655 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:23,167 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:40:24,012 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:40:24,574 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:25,975 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:40:26,501 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:40:27,468 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:28,020 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:29,406 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:29,959 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:31,373 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:31,953 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:32,783 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:33,332 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:34,350 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:34,919 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:36,412 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:40:36,926 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:40:38,091 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:40:38,666 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:40,123 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:40:40,713 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:40:41,397 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:40:42,358 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:40:43,217 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:40:43,722 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:40:44,202 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:40:44,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:40:44,714 INFO L93 Difference]: Finished difference Result 189 states and 203 transitions. [2021-02-24 00:40:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-02-24 00:40:44,719 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 149 [2021-02-24 00:40:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:40:44,721 INFO L225 Difference]: With dead ends: 189 [2021-02-24 00:40:44,721 INFO L226 Difference]: Without dead ends: 170 [2021-02-24 00:40:44,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=670, Invalid=11320, Unknown=0, NotChecked=0, Total=11990 [2021-02-24 00:40:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-02-24 00:40:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2021-02-24 00:40:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2021-02-24 00:40:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2021-02-24 00:40:44,839 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 149 [2021-02-24 00:40:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:40:44,840 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2021-02-24 00:40:44,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2021-02-24 00:40:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2021-02-24 00:40:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-24 00:40:44,841 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:40:44,841 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 16, 12, 8, 6, 6, 6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:40:44,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-02-24 00:40:44,841 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:40:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:40:44,842 INFO L82 PathProgramCache]: Analyzing trace with hash 561280410, now seen corresponding path program 36 times [2021-02-24 00:40:44,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:40:44,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718692124] [2021-02-24 00:40:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:40:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:40:45,079 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:40:45,081 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:40:45,173 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:40:45,175 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:40:45,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:40:45,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:45,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:45,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:45,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:45,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:45,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:45,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:45,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:45,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:46,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:46,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:47,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:47,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:47,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:47,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:47,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:47,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:40:47,601 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size [2021-02-24 00:40:47,603 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 105 [2021-02-24 00:40:48,047 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2021-02-24 00:40:48,052 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:40:48,055 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:40:48,447 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:40:48,449 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:40:48,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:48,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:40:48,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:48,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:40:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:40:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:40:48,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:48,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:40:48,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:40:48,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:40:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 48 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:40:49,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718692124] [2021-02-24 00:40:49,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:40:49,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-02-24 00:40:49,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988900584] [2021-02-24 00:40:49,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-24 00:40:49,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:40:49,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-24 00:40:49,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2021-02-24 00:40:49,037 INFO L87 Difference]: Start difference. First operand 161 states and 165 transitions. Second operand 28 states. [2021-02-24 00:40:49,340 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-24 00:40:50,041 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:40:50,794 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-24 00:40:51,588 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:40:52,386 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:40:53,100 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:40:53,729 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:40:54,287 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:40:55,023 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:40:55,794 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:40:56,390 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:40:57,075 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:40:57,666 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:40:58,564 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:40:59,196 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:40:59,929 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:41:00,674 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:41:01,203 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:41:01,763 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:41:02,448 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:41:03,125 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:41:03,872 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:41:04,573 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:41:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:41:05,931 INFO L93 Difference]: Finished difference Result 186 states and 198 transitions. [2021-02-24 00:41:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-24 00:41:05,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 153 [2021-02-24 00:41:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:41:05,938 INFO L225 Difference]: With dead ends: 186 [2021-02-24 00:41:05,939 INFO L226 Difference]: Without dead ends: 170 [2021-02-24 00:41:05,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2021-02-24 00:41:05,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-02-24 00:41:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 162. [2021-02-24 00:41:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-02-24 00:41:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 166 transitions. [2021-02-24 00:41:06,080 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 166 transitions. Word has length 153 [2021-02-24 00:41:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:41:06,081 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 166 transitions. [2021-02-24 00:41:06,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-24 00:41:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 166 transitions. [2021-02-24 00:41:06,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-24 00:41:06,082 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:41:06,082 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 17, 12, 8, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:41:06,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-02-24 00:41:06,082 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:41:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:41:06,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2083116354, now seen corresponding path program 37 times [2021-02-24 00:41:06,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:41:06,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622101246] [2021-02-24 00:41:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:41:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:41:06,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:41:06,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:41:06,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:06,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:06,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:07,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:07,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:07,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:07,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:07,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:07,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:07,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:07,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:07,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:07,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:07,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:07,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:07,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:07,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:07,879 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:41:07,881 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:41:08,108 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:41:08,110 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:41:08,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:08,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:41:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:41:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:41:08,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:08,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:41:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 47 proven. 940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:41:08,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622101246] [2021-02-24 00:41:08,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:41:08,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-24 00:41:08,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471742475] [2021-02-24 00:41:08,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-24 00:41:08,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:41:08,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-24 00:41:08,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:41:08,423 INFO L87 Difference]: Start difference. First operand 162 states and 166 transitions. Second operand 25 states. [2021-02-24 00:41:09,709 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:10,470 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:11,207 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:11,851 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:12,414 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:12,897 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:13,526 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:14,219 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:14,760 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:15,388 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:15,854 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:16,546 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:17,072 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:17,761 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:18,434 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:18,882 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:19,388 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:20,023 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:20,598 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:21,223 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:41:21,666 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:41:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:41:22,670 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2021-02-24 00:41:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 00:41:22,677 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 154 [2021-02-24 00:41:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:41:22,678 INFO L225 Difference]: With dead ends: 185 [2021-02-24 00:41:22,678 INFO L226 Difference]: Without dead ends: 169 [2021-02-24 00:41:22,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2021-02-24 00:41:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-24 00:41:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2021-02-24 00:41:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-24 00:41:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2021-02-24 00:41:22,881 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 154 [2021-02-24 00:41:22,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:41:22,882 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2021-02-24 00:41:22,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-24 00:41:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2021-02-24 00:41:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-02-24 00:41:22,883 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:41:22,883 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 17, 13, 8, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:41:22,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-02-24 00:41:22,883 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:41:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:41:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1249522144, now seen corresponding path program 38 times [2021-02-24 00:41:22,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:41:22,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906888760] [2021-02-24 00:41:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:41:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:41:23,202 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:41:23,205 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:41:23,293 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:41:23,295 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:41:23,408 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:41:23,410 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:41:23,542 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-02-24 00:41:23,546 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:41:23,548 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:41:23,697 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2021-02-24 00:41:23,702 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:41:23,704 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:41:23,871 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-02-24 00:41:23,876 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:41:23,878 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:41:24,079 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-02-24 00:41:24,084 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:41:24,086 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:41:24,320 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:41:24,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:24,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:41:24,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:24,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:41:24,574 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-02-24 00:41:24,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:24,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:41:24,758 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-02-24 00:41:24,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:24,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:41:24,940 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-02-24 00:41:24,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:24,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:41:25,118 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-02-24 00:41:25,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:25,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:41:25,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:25,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:41:25,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:25,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:41:25,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:25,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:41:25,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:25,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:26,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:26,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:26,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:26,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:26,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:26,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:26,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:26,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:26,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:26,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:27,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:27,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:27,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:27,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:27,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:27,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:27,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:27,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:28,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:28,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:28,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:28,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:28,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:28,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:29,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:29,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:29,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:29,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:29,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:29,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:29,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:29,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:30,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:30,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:30,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:30,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:30,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:30,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:31,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:31,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:31,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:31,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:32,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:32,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:32,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:32,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:32,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:32,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:33,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:33,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:33,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:33,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:34,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:34,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:34,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:34,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:34,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:34,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:35,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:35,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:35,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:35,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:41:36,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:36,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:41:36,789 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:41:36,791 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:41:37,450 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2021-02-24 00:41:37,455 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:41:37,457 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:41:38,135 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-02-24 00:41:38,140 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:41:38,143 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:41:38,819 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-02-24 00:41:38,824 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size [2021-02-24 00:41:38,827 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size 165 [2021-02-24 00:41:39,614 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2021-02-24 00:41:39,619 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:41:39,622 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:41:40,408 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 19 [2021-02-24 00:41:40,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:40,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:41:40,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:40,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:41:41,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:41,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:41:41,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:41:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:41:41,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:41,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:41:41,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:41:41,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:41:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 0 proven. 999 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:41:42,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906888760] [2021-02-24 00:41:42,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:41:42,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2021-02-24 00:41:42,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037660907] [2021-02-24 00:41:42,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-02-24 00:41:42,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:41:42,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-02-24 00:41:42,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3350, Unknown=0, NotChecked=0, Total=3540 [2021-02-24 00:41:42,270 INFO L87 Difference]: Start difference. First operand 163 states and 167 transitions. Second operand 60 states. [2021-02-24 00:41:42,699 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-24 00:41:43,527 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:41:44,189 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:41:44,866 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:41:45,586 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:41:46,289 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:41:46,906 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:41:48,345 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:41:49,299 WARN L202 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:41:51,019 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:41:51,799 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:41:53,375 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:41:54,180 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:41:55,542 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:41:56,130 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:41:57,174 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:41:57,782 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:41:58,745 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:41:59,353 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:00,670 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:01,254 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:42:02,711 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:42:03,323 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:04,538 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:05,160 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:06,538 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:07,162 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:42:08,062 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:42:08,673 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:10,196 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:42:10,759 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:42:11,810 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:12,417 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:13,961 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:14,581 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:16,101 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:16,721 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:17,634 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:18,249 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:19,392 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:19,998 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:21,598 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:42:22,163 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:42:23,470 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:42:24,103 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:25,778 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:42:26,419 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:27,413 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:42:28,060 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:42:28,805 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 00:42:30,431 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 00:42:31,370 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:42:31,965 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:32,476 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:42:33,054 INFO L93 Difference]: Finished difference Result 195 states and 209 transitions. [2021-02-24 00:42:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-02-24 00:42:33,060 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 155 [2021-02-24 00:42:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:42:33,062 INFO L225 Difference]: With dead ends: 195 [2021-02-24 00:42:33,062 INFO L226 Difference]: Without dead ends: 176 [2021-02-24 00:42:33,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=693, Invalid=12189, Unknown=0, NotChecked=0, Total=12882 [2021-02-24 00:42:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-02-24 00:42:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2021-02-24 00:42:33,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2021-02-24 00:42:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2021-02-24 00:42:33,198 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 155 [2021-02-24 00:42:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:42:33,198 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2021-02-24 00:42:33,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2021-02-24 00:42:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2021-02-24 00:42:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 00:42:33,200 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:42:33,200 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 17, 13, 8, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:42:33,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-02-24 00:42:33,200 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:42:33,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:42:33,201 INFO L82 PathProgramCache]: Analyzing trace with hash 641723654, now seen corresponding path program 39 times [2021-02-24 00:42:33,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:42:33,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986572124] [2021-02-24 00:42:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:42:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:42:33,389 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:42:33,391 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:42:33,490 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:42:33,493 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:42:33,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:33,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:42:33,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:33,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:33,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:33,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:33,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:33,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:33,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:33,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:33,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:33,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:34,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:34,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:35,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:35,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:35,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:35,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:35,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:35,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:35,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:35,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:35,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:35,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:35,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:35,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:36,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:36,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:42:36,263 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size [2021-02-24 00:42:36,266 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size 105 [2021-02-24 00:42:36,750 WARN L202 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2021-02-24 00:42:36,755 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:42:36,758 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 116 [2021-02-24 00:42:37,248 WARN L141 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size [2021-02-24 00:42:37,251 WARN L147 QuantifierPusher]: treesize reduction 8, result has 95.9 percent of original size 185 [2021-02-24 00:42:37,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:37,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:42:37,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:37,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:42:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:42:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:42:37,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:37,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:42:37,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:37,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 50 proven. 1021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:42:37,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986572124] [2021-02-24 00:42:37,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:42:37,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-02-24 00:42:37,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760794875] [2021-02-24 00:42:37,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-24 00:42:37,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:42:37,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-24 00:42:37,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2021-02-24 00:42:37,903 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand 29 states. [2021-02-24 00:42:38,249 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-24 00:42:39,030 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:42:39,845 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-24 00:42:40,739 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:41,619 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:42,392 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:43,117 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:43,703 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:44,432 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:45,259 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:45,901 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:46,603 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:47,150 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:47,930 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:48,543 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:49,325 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:50,081 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:50,622 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:51,227 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:51,997 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:52,667 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:53,409 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-24 00:42:53,937 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:42:54,804 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 00:42:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:42:56,290 INFO L93 Difference]: Finished difference Result 192 states and 204 transitions. [2021-02-24 00:42:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-24 00:42:56,296 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 159 [2021-02-24 00:42:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:42:56,299 INFO L225 Difference]: With dead ends: 192 [2021-02-24 00:42:56,299 INFO L226 Difference]: Without dead ends: 176 [2021-02-24 00:42:56,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=225, Invalid=2531, Unknown=0, NotChecked=0, Total=2756 [2021-02-24 00:42:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-02-24 00:42:56,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 168. [2021-02-24 00:42:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-24 00:42:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2021-02-24 00:42:56,481 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 159 [2021-02-24 00:42:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:42:56,482 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2021-02-24 00:42:56,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-02-24 00:42:56,482 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2021-02-24 00:42:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-24 00:42:56,483 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:42:56,483 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 18, 13, 8, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:42:56,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-02-24 00:42:56,483 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:42:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:42:56,484 INFO L82 PathProgramCache]: Analyzing trace with hash 281889622, now seen corresponding path program 40 times [2021-02-24 00:42:56,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:42:56,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597755501] [2021-02-24 00:42:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:42:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:42:56,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:42:56,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:42:56,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:56,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:56,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:56,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:56,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:56,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:56,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:56,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:56,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:57,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:57,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:58,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:58,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:58,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:58,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:58,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:58,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:42:58,550 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:42:58,552 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:42:58,825 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:42:58,827 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:42:58,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:58,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:42:59,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:42:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:42:59,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:42:59,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:42:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 49 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:42:59,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597755501] [2021-02-24 00:42:59,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:42:59,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-24 00:42:59,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993973541] [2021-02-24 00:42:59,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-24 00:42:59,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:42:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-24 00:42:59,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2021-02-24 00:42:59,170 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand 26 states. [2021-02-24 00:42:59,863 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-24 00:43:00,670 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:01,530 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:02,379 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:03,123 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:03,830 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:04,355 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:05,083 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:05,958 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:06,577 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:07,260 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:07,785 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:08,564 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:09,150 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:09,878 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:10,648 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:11,178 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:11,727 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:12,437 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:13,039 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:13,700 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:14,159 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-02-24 00:43:14,778 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-24 00:43:15,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:43:15,799 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2021-02-24 00:43:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 00:43:15,804 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 160 [2021-02-24 00:43:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:43:15,805 INFO L225 Difference]: With dead ends: 190 [2021-02-24 00:43:15,805 INFO L226 Difference]: Without dead ends: 174 [2021-02-24 00:43:15,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2021-02-24 00:43:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-02-24 00:43:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2021-02-24 00:43:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2021-02-24 00:43:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2021-02-24 00:43:15,957 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 160 [2021-02-24 00:43:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:43:15,957 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2021-02-24 00:43:15,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-24 00:43:15,957 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2021-02-24 00:43:15,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-02-24 00:43:15,958 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:43:15,958 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 18, 14, 9, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:43:15,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-02-24 00:43:15,959 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:43:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:43:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash -559114852, now seen corresponding path program 41 times [2021-02-24 00:43:15,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:43:15,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785505816] [2021-02-24 00:43:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:43:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:43:16,223 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:43:16,225 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:43:16,320 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-24 00:43:16,323 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-24 00:43:16,432 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-02-24 00:43:16,435 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-02-24 00:43:16,565 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-02-24 00:43:16,570 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 00:43:16,573 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 00:43:16,730 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2021-02-24 00:43:16,735 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-24 00:43:16,737 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-24 00:43:16,919 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-02-24 00:43:16,923 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-02-24 00:43:16,925 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size 36 [2021-02-24 00:43:17,136 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-02-24 00:43:17,141 WARN L141 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-02-24 00:43:17,144 WARN L147 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size 39 [2021-02-24 00:43:17,378 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:43:17,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:17,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:43:17,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:17,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:43:17,634 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-02-24 00:43:17,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:17,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:43:17,828 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-02-24 00:43:17,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:17,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:43:18,029 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-02-24 00:43:18,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:18,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:43:18,221 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-02-24 00:43:18,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:18,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 00:43:18,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:18,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 00:43:18,606 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-02-24 00:43:18,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:18,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-24 00:43:18,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:18,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 00:43:19,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:19,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:19,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:19,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:19,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:19,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:19,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:19,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:19,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:19,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:20,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:20,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:20,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:20,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:20,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:20,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:20,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:20,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:21,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:21,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:21,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:21,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:21,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:21,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:22,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:22,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:22,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:22,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:22,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:22,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:23,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:23,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:23,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:23,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:23,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:23,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:24,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:24,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:24,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:24,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:24,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:24,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:25,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:25,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:25,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:25,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:26,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:26,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:26,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:26,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:27,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:27,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:27,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:27,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:27,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:27,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:28,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:28,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:28,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:28,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:29,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:29,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:29,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:29,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:30,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:30,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:30,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:30,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 00:43:31,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:31,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 00:43:31,690 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-02-24 00:43:31,692 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size 55 [2021-02-24 00:43:32,401 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-02-24 00:43:32,405 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size [2021-02-24 00:43:32,408 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-02-24 00:43:33,144 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-02-24 00:43:33,149 WARN L141 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size [2021-02-24 00:43:33,151 WARN L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-02-24 00:43:33,926 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-02-24 00:43:33,933 WARN L141 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size [2021-02-24 00:43:33,936 WARN L147 QuantifierPusher]: treesize reduction 28, result has 85.5 percent of original size 165 [2021-02-24 00:43:34,798 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2021-02-24 00:43:34,804 WARN L141 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size [2021-02-24 00:43:34,806 WARN L147 QuantifierPusher]: treesize reduction 28, result has 84.6 percent of original size 154 [2021-02-24 00:43:35,673 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 19 [2021-02-24 00:43:35,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:35,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:43:36,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:36,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:43:36,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:36,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:43:37,029 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-24 00:43:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:43:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:43:37,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:37,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:43:37,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:43:37,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:43:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:43:37,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785505816] [2021-02-24 00:43:37,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:43:37,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2021-02-24 00:43:37,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257361474] [2021-02-24 00:43:37,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-02-24 00:43:37,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:43:37,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-02-24 00:43:37,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=3586, Unknown=0, NotChecked=0, Total=3782 [2021-02-24 00:43:37,677 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand 62 states. [2021-02-24 00:43:38,144 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-24 00:43:39,081 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-02-24 00:43:39,818 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-02-24 00:43:40,572 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-02-24 00:43:41,370 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-02-24 00:43:42,145 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-02-24 00:43:42,814 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-02-24 00:43:44,381 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:43:45,299 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-02-24 00:43:47,353 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-24 00:43:48,220 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-02-24 00:43:50,108 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:43:50,994 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-02-24 00:43:52,600 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 00:43:53,313 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-24 00:43:54,577 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:43:55,268 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:43:56,415 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-24 00:43:57,081 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 00:43:58,590 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 00:43:59,213 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-24 00:44:00,890 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 55