/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/loop-invgen/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:25:49,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:25:49,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:25:49,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:25:49,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:25:49,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:25:49,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:25:49,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:25:49,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:25:49,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:25:49,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:25:49,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:25:49,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:25:49,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:25:49,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:25:49,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:25:49,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:25:49,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:25:49,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:25:49,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:25:49,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:25:49,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:25:49,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:25:49,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:25:49,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:25:49,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:25:49,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:25:49,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:25:49,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:25:49,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:25:49,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:25:49,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:25:49,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:25:49,788 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:25:49,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:25:49,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:25:49,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:25:49,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:25:49,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:25:49,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:25:49,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:25:50,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:25:50,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:25:50,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:25:50,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:25:50,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:25:50,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-10-24 02:25:50,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66df53ac/065994c3646743698980f99d6e2a3839/FLAG16023503c [2020-10-24 02:25:51,062 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:25:51,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-10-24 02:25:51,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66df53ac/065994c3646743698980f99d6e2a3839/FLAG16023503c [2020-10-24 02:25:51,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66df53ac/065994c3646743698980f99d6e2a3839 [2020-10-24 02:25:51,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:25:51,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:25:51,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:25:51,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:25:51,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:25:51,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fa393c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51, skipping insertion in model container [2020-10-24 02:25:51,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:25:51,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:25:51,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:25:51,710 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:25:51,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:25:51,779 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:25:51,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51 WrapperNode [2020-10-24 02:25:51,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:25:51,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:25:51,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:25:51,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:25:51,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (1/1) ... [2020-10-24 02:25:51,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:25:51,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:25:51,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:25:51,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:25:51,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (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 [2020-10-24 02:25:51,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:25:51,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:25:51,938 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:25:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:25:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:25:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:25:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:25:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:25:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:25:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:25:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:25:51,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:25:51,941 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:25:51,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:25:51,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:25:51,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:25:51,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:25:51,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:25:51,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:25:51,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:25:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:25:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:25:52,353 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:25:52,354 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-24 02:25:52,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:52 BoogieIcfgContainer [2020-10-24 02:25:52,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:25:52,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:25:52,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:25:52,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:25:52,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:25:51" (1/3) ... [2020-10-24 02:25:52,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6268aa28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:52, skipping insertion in model container [2020-10-24 02:25:52,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:51" (2/3) ... [2020-10-24 02:25:52,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6268aa28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:52, skipping insertion in model container [2020-10-24 02:25:52,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:52" (3/3) ... [2020-10-24 02:25:52,365 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2020-10-24 02:25:52,379 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:25:52,384 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:25:52,399 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:25:52,437 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:25:52,437 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:25:52,437 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:25:52,438 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:25:52,438 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:25:52,438 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:25:52,438 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:25:52,438 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:25:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-24 02:25:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-24 02:25:52,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:52,469 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, 1] [2020-10-24 02:25:52,469 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:52,483 INFO L82 PathProgramCache]: Analyzing trace with hash -29193420, now seen corresponding path program 1 times [2020-10-24 02:25:52,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:52,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198464465] [2020-10-24 02:25:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:25:52,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198464465] [2020-10-24 02:25:52,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:52,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:25:52,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720318291] [2020-10-24 02:25:52,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:25:52,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:52,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:25:52,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:25:52,877 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 6 states. [2020-10-24 02:25:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:53,749 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2020-10-24 02:25:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:25:53,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-24 02:25:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:53,761 INFO L225 Difference]: With dead ends: 158 [2020-10-24 02:25:53,761 INFO L226 Difference]: Without dead ends: 90 [2020-10-24 02:25:53,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:25:53,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-24 02:25:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-10-24 02:25:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-24 02:25:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2020-10-24 02:25:53,836 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 34 [2020-10-24 02:25:53,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:53,836 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2020-10-24 02:25:53,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:25:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2020-10-24 02:25:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-24 02:25:53,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:53,839 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, 1] [2020-10-24 02:25:53,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:25:53,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:53,841 INFO L82 PathProgramCache]: Analyzing trace with hash -864195967, now seen corresponding path program 1 times [2020-10-24 02:25:53,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:53,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782621893] [2020-10-24 02:25:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:25:54,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782621893] [2020-10-24 02:25:54,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:54,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:25:54,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981463793] [2020-10-24 02:25:54,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:25:54,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:54,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:25:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:25:54,007 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand 6 states. [2020-10-24 02:25:54,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:54,515 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2020-10-24 02:25:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:25:54,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-24 02:25:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:54,520 INFO L225 Difference]: With dead ends: 96 [2020-10-24 02:25:54,520 INFO L226 Difference]: Without dead ends: 92 [2020-10-24 02:25:54,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:25:54,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-24 02:25:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-24 02:25:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-24 02:25:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2020-10-24 02:25:54,569 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 34 [2020-10-24 02:25:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:54,570 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2020-10-24 02:25:54,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:25:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2020-10-24 02:25:54,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-24 02:25:54,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:54,574 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-24 02:25:54,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:25:54,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash 908649375, now seen corresponding path program 1 times [2020-10-24 02:25:54,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:54,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383472699] [2020-10-24 02:25:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:54,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:54,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:25:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:25:54,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383472699] [2020-10-24 02:25:54,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:54,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:25:54,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779565076] [2020-10-24 02:25:54,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:25:54,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:54,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:25:54,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:25:54,773 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand 6 states. [2020-10-24 02:25:55,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:55,427 INFO L93 Difference]: Finished difference Result 127 states and 156 transitions. [2020-10-24 02:25:55,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:25:55,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-24 02:25:55,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:55,430 INFO L225 Difference]: With dead ends: 127 [2020-10-24 02:25:55,430 INFO L226 Difference]: Without dead ends: 123 [2020-10-24 02:25:55,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:25:55,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-24 02:25:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2020-10-24 02:25:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-24 02:25:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2020-10-24 02:25:55,460 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 39 [2020-10-24 02:25:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:55,460 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2020-10-24 02:25:55,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:25:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2020-10-24 02:25:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-24 02:25:55,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:55,463 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-24 02:25:55,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:25:55,463 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:55,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:55,464 INFO L82 PathProgramCache]: Analyzing trace with hash -417185567, now seen corresponding path program 1 times [2020-10-24 02:25:55,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:55,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967330669] [2020-10-24 02:25:55,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:25:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:25:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-24 02:25:55,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967330669] [2020-10-24 02:25:55,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:55,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 02:25:55,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210627465] [2020-10-24 02:25:55,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:25:55,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:55,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:25:55,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:25:55,579 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand 7 states. [2020-10-24 02:25:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:56,122 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-10-24 02:25:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 02:25:56,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-24 02:25:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:56,125 INFO L225 Difference]: With dead ends: 117 [2020-10-24 02:25:56,125 INFO L226 Difference]: Without dead ends: 113 [2020-10-24 02:25:56,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:25:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-24 02:25:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-24 02:25:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-24 02:25:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2020-10-24 02:25:56,154 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 44 [2020-10-24 02:25:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:56,154 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2020-10-24 02:25:56,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:25:56,155 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2020-10-24 02:25:56,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-24 02:25:56,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:56,157 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:56,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:25:56,157 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:56,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:56,158 INFO L82 PathProgramCache]: Analyzing trace with hash -33628526, now seen corresponding path program 1 times [2020-10-24 02:25:56,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:56,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518735100] [2020-10-24 02:25:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:56,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:25:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:25:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 02:25:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-24 02:25:56,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518735100] [2020-10-24 02:25:56,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:56,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:25:56,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841790021] [2020-10-24 02:25:56,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:25:56,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:56,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:25:56,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:25:56,267 INFO L87 Difference]: Start difference. First operand 113 states and 137 transitions. Second operand 6 states. [2020-10-24 02:25:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:56,863 INFO L93 Difference]: Finished difference Result 146 states and 183 transitions. [2020-10-24 02:25:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:25:56,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-24 02:25:56,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:56,868 INFO L225 Difference]: With dead ends: 146 [2020-10-24 02:25:56,869 INFO L226 Difference]: Without dead ends: 142 [2020-10-24 02:25:56,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:25:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-24 02:25:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-10-24 02:25:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-24 02:25:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 171 transitions. [2020-10-24 02:25:56,910 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 171 transitions. Word has length 49 [2020-10-24 02:25:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:56,910 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 171 transitions. [2020-10-24 02:25:56,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:25:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 171 transitions. [2020-10-24 02:25:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-24 02:25:56,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:56,914 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:56,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:25:56,915 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:56,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:56,915 INFO L82 PathProgramCache]: Analyzing trace with hash -478395316, now seen corresponding path program 1 times [2020-10-24 02:25:56,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:56,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494662066] [2020-10-24 02:25:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:57,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:57,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:25:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:57,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:25:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:57,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 02:25:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-24 02:25:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:25:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-24 02:25:57,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494662066] [2020-10-24 02:25:57,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:57,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 02:25:57,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975084357] [2020-10-24 02:25:57,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:25:57,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:57,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:25:57,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:25:57,139 INFO L87 Difference]: Start difference. First operand 134 states and 171 transitions. Second operand 8 states. [2020-10-24 02:25:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:58,113 INFO L93 Difference]: Finished difference Result 203 states and 271 transitions. [2020-10-24 02:25:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:25:58,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-24 02:25:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:58,119 INFO L225 Difference]: With dead ends: 203 [2020-10-24 02:25:58,120 INFO L226 Difference]: Without dead ends: 199 [2020-10-24 02:25:58,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:25:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-24 02:25:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 174. [2020-10-24 02:25:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-24 02:25:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2020-10-24 02:25:58,183 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 67 [2020-10-24 02:25:58,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:58,184 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2020-10-24 02:25:58,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:25:58,185 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2020-10-24 02:25:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-24 02:25:58,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:58,193 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:58,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 02:25:58,194 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:58,196 INFO L82 PathProgramCache]: Analyzing trace with hash -150378842, now seen corresponding path program 1 times [2020-10-24 02:25:58,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:58,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416387209] [2020-10-24 02:25:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:25:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:25:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:58,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:25:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:25:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:25:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:25:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-24 02:25:58,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416387209] [2020-10-24 02:25:58,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:58,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-24 02:25:58,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430912084] [2020-10-24 02:25:58,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:25:58,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:58,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:25:58,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:25:58,372 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 9 states. [2020-10-24 02:25:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:59,411 INFO L93 Difference]: Finished difference Result 214 states and 279 transitions. [2020-10-24 02:25:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:25:59,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-24 02:25:59,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:59,415 INFO L225 Difference]: With dead ends: 214 [2020-10-24 02:25:59,415 INFO L226 Difference]: Without dead ends: 210 [2020-10-24 02:25:59,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-24 02:25:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-24 02:25:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 191. [2020-10-24 02:25:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-24 02:25:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 250 transitions. [2020-10-24 02:25:59,458 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 250 transitions. Word has length 73 [2020-10-24 02:25:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:59,458 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 250 transitions. [2020-10-24 02:25:59,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:25:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 250 transitions. [2020-10-24 02:25:59,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-24 02:25:59,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:59,460 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 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, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:59,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 02:25:59,461 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:59,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:59,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1054405889, now seen corresponding path program 1 times [2020-10-24 02:25:59,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:59,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130172780] [2020-10-24 02:25:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:25:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:25:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 02:25:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-24 02:25:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:25:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-24 02:25:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-24 02:25:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-24 02:25:59,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130172780] [2020-10-24 02:25:59,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:59,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 02:25:59,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25056084] [2020-10-24 02:25:59,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:25:59,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:59,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:25:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:25:59,655 INFO L87 Difference]: Start difference. First operand 191 states and 250 transitions. Second operand 8 states. [2020-10-24 02:26:00,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:00,636 INFO L93 Difference]: Finished difference Result 236 states and 308 transitions. [2020-10-24 02:26:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:26:00,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-24 02:26:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:00,643 INFO L225 Difference]: With dead ends: 236 [2020-10-24 02:26:00,643 INFO L226 Difference]: Without dead ends: 232 [2020-10-24 02:26:00,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:26:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-24 02:26:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 218. [2020-10-24 02:26:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-24 02:26:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2020-10-24 02:26:00,705 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 77 [2020-10-24 02:26:00,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:00,705 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2020-10-24 02:26:00,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:26:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2020-10-24 02:26:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-24 02:26:00,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:00,707 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:00,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 02:26:00,707 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:00,708 INFO L82 PathProgramCache]: Analyzing trace with hash -801092115, now seen corresponding path program 1 times [2020-10-24 02:26:00,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:00,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231225281] [2020-10-24 02:26:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-24 02:26:00,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231225281] [2020-10-24 02:26:00,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:26:00,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 02:26:00,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221264972] [2020-10-24 02:26:00,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:26:00,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:00,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:26:00,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:26:00,822 INFO L87 Difference]: Start difference. First operand 218 states and 290 transitions. Second operand 8 states. [2020-10-24 02:26:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:01,664 INFO L93 Difference]: Finished difference Result 234 states and 308 transitions. [2020-10-24 02:26:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:26:01,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-24 02:26:01,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:01,668 INFO L225 Difference]: With dead ends: 234 [2020-10-24 02:26:01,668 INFO L226 Difference]: Without dead ends: 230 [2020-10-24 02:26:01,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:26:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-24 02:26:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 223. [2020-10-24 02:26:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-24 02:26:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 295 transitions. [2020-10-24 02:26:01,710 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 295 transitions. Word has length 78 [2020-10-24 02:26:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:01,711 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 295 transitions. [2020-10-24 02:26:01,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:26:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 295 transitions. [2020-10-24 02:26:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-24 02:26:01,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:01,713 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:01,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 02:26:01,713 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1587544774, now seen corresponding path program 1 times [2020-10-24 02:26:01,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:01,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031773115] [2020-10-24 02:26:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-24 02:26:01,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031773115] [2020-10-24 02:26:01,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:26:01,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-24 02:26:01,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926600689] [2020-10-24 02:26:01,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:26:01,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:01,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:26:01,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:01,908 INFO L87 Difference]: Start difference. First operand 223 states and 295 transitions. Second operand 10 states. [2020-10-24 02:26:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:03,032 INFO L93 Difference]: Finished difference Result 249 states and 324 transitions. [2020-10-24 02:26:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:26:03,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-24 02:26:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:03,036 INFO L225 Difference]: With dead ends: 249 [2020-10-24 02:26:03,036 INFO L226 Difference]: Without dead ends: 245 [2020-10-24 02:26:03,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-24 02:26:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-24 02:26:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 236. [2020-10-24 02:26:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-24 02:26:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 310 transitions. [2020-10-24 02:26:03,093 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 310 transitions. Word has length 83 [2020-10-24 02:26:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:03,095 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 310 transitions. [2020-10-24 02:26:03,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:26:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 310 transitions. [2020-10-24 02:26:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-24 02:26:03,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:03,096 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:03,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 02:26:03,097 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash -76376755, now seen corresponding path program 1 times [2020-10-24 02:26:03,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:03,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871516446] [2020-10-24 02:26:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-24 02:26:03,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871516446] [2020-10-24 02:26:03,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:26:03,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 02:26:03,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691932704] [2020-10-24 02:26:03,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:26:03,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:03,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:26:03,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:26:03,258 INFO L87 Difference]: Start difference. First operand 236 states and 310 transitions. Second operand 8 states. [2020-10-24 02:26:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:04,154 INFO L93 Difference]: Finished difference Result 253 states and 327 transitions. [2020-10-24 02:26:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:26:04,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-24 02:26:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:04,157 INFO L225 Difference]: With dead ends: 253 [2020-10-24 02:26:04,157 INFO L226 Difference]: Without dead ends: 249 [2020-10-24 02:26:04,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:26:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-24 02:26:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 241. [2020-10-24 02:26:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-24 02:26:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 315 transitions. [2020-10-24 02:26:04,199 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 315 transitions. Word has length 88 [2020-10-24 02:26:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:04,199 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 315 transitions. [2020-10-24 02:26:04,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:26:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 315 transitions. [2020-10-24 02:26:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-24 02:26:04,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:04,201 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2020-10-24 02:26:04,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 02:26:04,202 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 117247865, now seen corresponding path program 2 times [2020-10-24 02:26:04,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:04,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421319287] [2020-10-24 02:26:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 02:26:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-24 02:26:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-24 02:26:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-24 02:26:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-24 02:26:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 02:26:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-24 02:26:04,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421319287] [2020-10-24 02:26:04,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:04,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:26:04,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076540098] [2020-10-24 02:26:04,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:26:04,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:04,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:26:04,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:26:04,324 INFO L87 Difference]: Start difference. First operand 241 states and 315 transitions. Second operand 7 states. [2020-10-24 02:26:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:05,075 INFO L93 Difference]: Finished difference Result 419 states and 558 transitions. [2020-10-24 02:26:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 02:26:05,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-24 02:26:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:05,079 INFO L225 Difference]: With dead ends: 419 [2020-10-24 02:26:05,079 INFO L226 Difference]: Without dead ends: 240 [2020-10-24 02:26:05,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-24 02:26:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-10-24 02:26:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-24 02:26:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 312 transitions. [2020-10-24 02:26:05,122 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 312 transitions. Word has length 95 [2020-10-24 02:26:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:05,122 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 312 transitions. [2020-10-24 02:26:05,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:26:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 312 transitions. [2020-10-24 02:26:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-24 02:26:05,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:05,124 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:05,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 02:26:05,124 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:05,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1057017687, now seen corresponding path program 1 times [2020-10-24 02:26:05,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:05,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515062692] [2020-10-24 02:26:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-24 02:26:05,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515062692] [2020-10-24 02:26:05,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:26:05,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-24 02:26:05,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748592386] [2020-10-24 02:26:05,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:26:05,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:05,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:26:05,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:05,337 INFO L87 Difference]: Start difference. First operand 240 states and 312 transitions. Second operand 12 states. [2020-10-24 02:26:06,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:06,708 INFO L93 Difference]: Finished difference Result 264 states and 337 transitions. [2020-10-24 02:26:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 02:26:06,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-10-24 02:26:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:06,711 INFO L225 Difference]: With dead ends: 264 [2020-10-24 02:26:06,712 INFO L226 Difference]: Without dead ends: 260 [2020-10-24 02:26:06,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-10-24 02:26:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-24 02:26:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 251. [2020-10-24 02:26:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-24 02:26:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 323 transitions. [2020-10-24 02:26:06,756 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 323 transitions. Word has length 99 [2020-10-24 02:26:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:06,756 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 323 transitions. [2020-10-24 02:26:06,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:26:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 323 transitions. [2020-10-24 02:26:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-24 02:26:06,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:06,763 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:06,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 02:26:06,764 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:06,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1682959562, now seen corresponding path program 1 times [2020-10-24 02:26:06,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:06,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589603374] [2020-10-24 02:26:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-24 02:26:06,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589603374] [2020-10-24 02:26:06,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:26:06,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-24 02:26:06,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403155517] [2020-10-24 02:26:06,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:26:06,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:06,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:26:06,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:06,971 INFO L87 Difference]: Start difference. First operand 251 states and 323 transitions. Second operand 10 states. [2020-10-24 02:26:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:08,007 INFO L93 Difference]: Finished difference Result 268 states and 340 transitions. [2020-10-24 02:26:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:26:08,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-24 02:26:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:08,010 INFO L225 Difference]: With dead ends: 268 [2020-10-24 02:26:08,010 INFO L226 Difference]: Without dead ends: 264 [2020-10-24 02:26:08,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:26:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-24 02:26:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2020-10-24 02:26:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-24 02:26:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 328 transitions. [2020-10-24 02:26:08,071 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 328 transitions. Word has length 104 [2020-10-24 02:26:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:08,071 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 328 transitions. [2020-10-24 02:26:08,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:26:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 328 transitions. [2020-10-24 02:26:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-24 02:26:08,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:08,075 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-10-24 02:26:08,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 02:26:08,075 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:08,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:08,076 INFO L82 PathProgramCache]: Analyzing trace with hash -304830453, now seen corresponding path program 1 times [2020-10-24 02:26:08,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:08,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387703788] [2020-10-24 02:26:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-24 02:26:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 02:26:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-24 02:26:08,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387703788] [2020-10-24 02:26:08,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:08,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:26:08,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254608955] [2020-10-24 02:26:08,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:26:08,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:08,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:26:08,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:08,259 INFO L87 Difference]: Start difference. First operand 256 states and 328 transitions. Second operand 10 states. [2020-10-24 02:26:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:09,643 INFO L93 Difference]: Finished difference Result 368 states and 490 transitions. [2020-10-24 02:26:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:26:09,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-10-24 02:26:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:09,647 INFO L225 Difference]: With dead ends: 368 [2020-10-24 02:26:09,647 INFO L226 Difference]: Without dead ends: 364 [2020-10-24 02:26:09,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:26:09,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-24 02:26:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 326. [2020-10-24 02:26:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-24 02:26:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 430 transitions. [2020-10-24 02:26:09,705 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 430 transitions. Word has length 108 [2020-10-24 02:26:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:09,706 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 430 transitions. [2020-10-24 02:26:09,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:26:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 430 transitions. [2020-10-24 02:26:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-24 02:26:09,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:09,710 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:09,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 02:26:09,711 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:09,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1611775781, now seen corresponding path program 1 times [2020-10-24 02:26:09,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:09,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533836628] [2020-10-24 02:26:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-24 02:26:09,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533836628] [2020-10-24 02:26:09,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:26:09,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 02:26:09,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344537132] [2020-10-24 02:26:09,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:26:09,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:09,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:26:09,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:26:09,863 INFO L87 Difference]: Start difference. First operand 326 states and 430 transitions. Second operand 8 states. [2020-10-24 02:26:10,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:10,614 INFO L93 Difference]: Finished difference Result 357 states and 469 transitions. [2020-10-24 02:26:10,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:26:10,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 114 [2020-10-24 02:26:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:10,617 INFO L225 Difference]: With dead ends: 357 [2020-10-24 02:26:10,617 INFO L226 Difference]: Without dead ends: 353 [2020-10-24 02:26:10,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:26:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-24 02:26:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 330. [2020-10-24 02:26:10,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-24 02:26:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 433 transitions. [2020-10-24 02:26:10,688 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 433 transitions. Word has length 114 [2020-10-24 02:26:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:10,689 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 433 transitions. [2020-10-24 02:26:10,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:26:10,689 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 433 transitions. [2020-10-24 02:26:10,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-24 02:26:10,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:10,692 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:10,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 02:26:10,692 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:10,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1161890814, now seen corresponding path program 2 times [2020-10-24 02:26:10,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:10,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024154167] [2020-10-24 02:26:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-24 02:26:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 02:26:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-24 02:26:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-24 02:26:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-10-24 02:26:10,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024154167] [2020-10-24 02:26:10,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:26:10,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:26:10,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386138173] [2020-10-24 02:26:10,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:26:10,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:10,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:26:10,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:26:10,789 INFO L87 Difference]: Start difference. First operand 330 states and 433 transitions. Second operand 6 states. [2020-10-24 02:26:11,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:11,217 INFO L93 Difference]: Finished difference Result 514 states and 669 transitions. [2020-10-24 02:26:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:26:11,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-24 02:26:11,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:11,220 INFO L225 Difference]: With dead ends: 514 [2020-10-24 02:26:11,220 INFO L226 Difference]: Without dead ends: 267 [2020-10-24 02:26:11,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-24 02:26:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2020-10-24 02:26:11,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-24 02:26:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 330 transitions. [2020-10-24 02:26:11,264 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 330 transitions. Word has length 118 [2020-10-24 02:26:11,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:11,265 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 330 transitions. [2020-10-24 02:26:11,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:26:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 330 transitions. [2020-10-24 02:26:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-24 02:26:11,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:11,267 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:11,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-24 02:26:11,267 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:11,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1028663308, now seen corresponding path program 1 times [2020-10-24 02:26:11,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:11,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67906604] [2020-10-24 02:26:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:26:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-24 02:26:11,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67906604] [2020-10-24 02:26:11,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:11,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:26:11,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722792955] [2020-10-24 02:26:11,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:26:11,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:26:11,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:11,441 INFO L87 Difference]: Start difference. First operand 267 states and 330 transitions. Second operand 10 states. [2020-10-24 02:26:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:12,766 INFO L93 Difference]: Finished difference Result 350 states and 443 transitions. [2020-10-24 02:26:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:26:12,766 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-10-24 02:26:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:12,770 INFO L225 Difference]: With dead ends: 350 [2020-10-24 02:26:12,770 INFO L226 Difference]: Without dead ends: 346 [2020-10-24 02:26:12,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:26:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-24 02:26:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 310. [2020-10-24 02:26:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-24 02:26:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 393 transitions. [2020-10-24 02:26:12,820 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 393 transitions. Word has length 119 [2020-10-24 02:26:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:12,821 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 393 transitions. [2020-10-24 02:26:12,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:26:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 393 transitions. [2020-10-24 02:26:12,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-24 02:26:12,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:12,823 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:12,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-24 02:26:12,823 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:12,824 INFO L82 PathProgramCache]: Analyzing trace with hash -815371058, now seen corresponding path program 1 times [2020-10-24 02:26:12,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:12,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314284617] [2020-10-24 02:26:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-24 02:26:13,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314284617] [2020-10-24 02:26:13,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:13,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:26:13,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112581007] [2020-10-24 02:26:13,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:26:13,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:26:13,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:13,004 INFO L87 Difference]: Start difference. First operand 310 states and 393 transitions. Second operand 10 states. [2020-10-24 02:26:14,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:14,206 INFO L93 Difference]: Finished difference Result 366 states and 464 transitions. [2020-10-24 02:26:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:26:14,206 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-10-24 02:26:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:14,209 INFO L225 Difference]: With dead ends: 366 [2020-10-24 02:26:14,209 INFO L226 Difference]: Without dead ends: 362 [2020-10-24 02:26:14,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:26:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-24 02:26:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 334. [2020-10-24 02:26:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-24 02:26:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 424 transitions. [2020-10-24 02:26:14,276 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 424 transitions. Word has length 119 [2020-10-24 02:26:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:14,276 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 424 transitions. [2020-10-24 02:26:14,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:26:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 424 transitions. [2020-10-24 02:26:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-24 02:26:14,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:14,279 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:26:14,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-24 02:26:14,279 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:14,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1631717761, now seen corresponding path program 1 times [2020-10-24 02:26:14,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:14,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170568416] [2020-10-24 02:26:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 02:26:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 31 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-24 02:26:14,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170568416] [2020-10-24 02:26:14,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:14,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:26:14,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789643939] [2020-10-24 02:26:14,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:26:14,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:14,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:26:14,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:14,447 INFO L87 Difference]: Start difference. First operand 334 states and 424 transitions. Second operand 10 states. [2020-10-24 02:26:15,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:15,866 INFO L93 Difference]: Finished difference Result 436 states and 568 transitions. [2020-10-24 02:26:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:26:15,866 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2020-10-24 02:26:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:15,870 INFO L225 Difference]: With dead ends: 436 [2020-10-24 02:26:15,870 INFO L226 Difference]: Without dead ends: 432 [2020-10-24 02:26:15,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:26:15,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-24 02:26:15,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 394. [2020-10-24 02:26:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-24 02:26:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 514 transitions. [2020-10-24 02:26:15,937 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 514 transitions. Word has length 121 [2020-10-24 02:26:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:15,937 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 514 transitions. [2020-10-24 02:26:15,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:26:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 514 transitions. [2020-10-24 02:26:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-24 02:26:15,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:15,940 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:15,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-24 02:26:15,940 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:15,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1735456635, now seen corresponding path program 1 times [2020-10-24 02:26:15,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:15,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775470367] [2020-10-24 02:26:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-10-24 02:26:16,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775470367] [2020-10-24 02:26:16,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:16,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 02:26:16,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193829842] [2020-10-24 02:26:16,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:26:16,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:16,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:26:16,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:26:16,091 INFO L87 Difference]: Start difference. First operand 394 states and 514 transitions. Second operand 9 states. [2020-10-24 02:26:16,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:16,828 INFO L93 Difference]: Finished difference Result 402 states and 521 transitions. [2020-10-24 02:26:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:26:16,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-24 02:26:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:16,832 INFO L225 Difference]: With dead ends: 402 [2020-10-24 02:26:16,832 INFO L226 Difference]: Without dead ends: 398 [2020-10-24 02:26:16,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-24 02:26:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-24 02:26:16,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2020-10-24 02:26:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-24 02:26:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 517 transitions. [2020-10-24 02:26:16,896 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 517 transitions. Word has length 124 [2020-10-24 02:26:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:16,897 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 517 transitions. [2020-10-24 02:26:16,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:26:16,897 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 517 transitions. [2020-10-24 02:26:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-24 02:26:16,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:16,900 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:16,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-24 02:26:16,900 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:16,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2058081113, now seen corresponding path program 1 times [2020-10-24 02:26:16,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:16,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042828978] [2020-10-24 02:26:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:26:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:26:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-24 02:26:17,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042828978] [2020-10-24 02:26:17,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:17,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:26:17,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125738992] [2020-10-24 02:26:17,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:26:17,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:17,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:26:17,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:17,087 INFO L87 Difference]: Start difference. First operand 398 states and 517 transitions. Second operand 12 states. [2020-10-24 02:26:18,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:18,623 INFO L93 Difference]: Finished difference Result 445 states and 579 transitions. [2020-10-24 02:26:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:26:18,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 129 [2020-10-24 02:26:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:18,629 INFO L225 Difference]: With dead ends: 445 [2020-10-24 02:26:18,629 INFO L226 Difference]: Without dead ends: 437 [2020-10-24 02:26:18,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:26:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-24 02:26:18,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 421. [2020-10-24 02:26:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-24 02:26:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 550 transitions. [2020-10-24 02:26:18,699 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 550 transitions. Word has length 129 [2020-10-24 02:26:18,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:18,699 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 550 transitions. [2020-10-24 02:26:18,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:26:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 550 transitions. [2020-10-24 02:26:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-24 02:26:18,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:18,702 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:18,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-24 02:26:18,702 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:18,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:18,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1829523182, now seen corresponding path program 1 times [2020-10-24 02:26:18,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:18,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489762797] [2020-10-24 02:26:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:26:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-24 02:26:18,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489762797] [2020-10-24 02:26:18,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:18,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:26:18,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131120310] [2020-10-24 02:26:18,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:26:18,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:18,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:26:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:18,875 INFO L87 Difference]: Start difference. First operand 421 states and 550 transitions. Second operand 10 states. [2020-10-24 02:26:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:20,114 INFO L93 Difference]: Finished difference Result 459 states and 591 transitions. [2020-10-24 02:26:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:26:20,114 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-10-24 02:26:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:20,118 INFO L225 Difference]: With dead ends: 459 [2020-10-24 02:26:20,118 INFO L226 Difference]: Without dead ends: 455 [2020-10-24 02:26:20,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:26:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-24 02:26:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 435. [2020-10-24 02:26:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-24 02:26:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 567 transitions. [2020-10-24 02:26:20,192 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 567 transitions. Word has length 129 [2020-10-24 02:26:20,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:20,192 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 567 transitions. [2020-10-24 02:26:20,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:26:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 567 transitions. [2020-10-24 02:26:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-24 02:26:20,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:20,195 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:26:20,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-24 02:26:20,195 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:20,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:20,196 INFO L82 PathProgramCache]: Analyzing trace with hash -855516814, now seen corresponding path program 3 times [2020-10-24 02:26:20,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:20,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034706287] [2020-10-24 02:26:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 02:26:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:26:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-24 02:26:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 40 proven. 19 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-24 02:26:20,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034706287] [2020-10-24 02:26:20,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:20,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:26:20,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765930927] [2020-10-24 02:26:20,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:26:20,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:20,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:26:20,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:26:20,378 INFO L87 Difference]: Start difference. First operand 435 states and 567 transitions. Second operand 10 states. [2020-10-24 02:26:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:21,808 INFO L93 Difference]: Finished difference Result 491 states and 638 transitions. [2020-10-24 02:26:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:26:21,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 131 [2020-10-24 02:26:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:21,814 INFO L225 Difference]: With dead ends: 491 [2020-10-24 02:26:21,814 INFO L226 Difference]: Without dead ends: 483 [2020-10-24 02:26:21,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:26:21,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-24 02:26:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 461. [2020-10-24 02:26:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-24 02:26:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 603 transitions. [2020-10-24 02:26:21,909 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 603 transitions. Word has length 131 [2020-10-24 02:26:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:21,910 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 603 transitions. [2020-10-24 02:26:21,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:26:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 603 transitions. [2020-10-24 02:26:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-24 02:26:21,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:21,913 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:21,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-24 02:26:21,913 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:21,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1124018072, now seen corresponding path program 1 times [2020-10-24 02:26:21,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:21,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726834657] [2020-10-24 02:26:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:26:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-10-24 02:26:22,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726834657] [2020-10-24 02:26:22,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:22,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 02:26:22,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163729176] [2020-10-24 02:26:22,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 02:26:22,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:22,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 02:26:22,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:26:22,086 INFO L87 Difference]: Start difference. First operand 461 states and 603 transitions. Second operand 11 states. [2020-10-24 02:26:23,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:23,024 INFO L93 Difference]: Finished difference Result 469 states and 610 transitions. [2020-10-24 02:26:23,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 02:26:23,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2020-10-24 02:26:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:23,028 INFO L225 Difference]: With dead ends: 469 [2020-10-24 02:26:23,028 INFO L226 Difference]: Without dead ends: 465 [2020-10-24 02:26:23,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-24 02:26:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-24 02:26:23,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-10-24 02:26:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-24 02:26:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 606 transitions. [2020-10-24 02:26:23,114 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 606 transitions. Word has length 140 [2020-10-24 02:26:23,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:23,115 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 606 transitions. [2020-10-24 02:26:23,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 02:26:23,115 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 606 transitions. [2020-10-24 02:26:23,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-24 02:26:23,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:23,118 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:23,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-24 02:26:23,118 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:23,118 INFO L82 PathProgramCache]: Analyzing trace with hash 2901099, now seen corresponding path program 1 times [2020-10-24 02:26:23,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:23,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437501227] [2020-10-24 02:26:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:26:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 02:26:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-24 02:26:23,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437501227] [2020-10-24 02:26:23,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:23,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:26:23,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69695922] [2020-10-24 02:26:23,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:26:23,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:23,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:26:23,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:23,321 INFO L87 Difference]: Start difference. First operand 465 states and 606 transitions. Second operand 12 states. [2020-10-24 02:26:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:24,890 INFO L93 Difference]: Finished difference Result 501 states and 643 transitions. [2020-10-24 02:26:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:26:24,891 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-10-24 02:26:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:24,895 INFO L225 Difference]: With dead ends: 501 [2020-10-24 02:26:24,895 INFO L226 Difference]: Without dead ends: 497 [2020-10-24 02:26:24,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:26:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-24 02:26:24,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 477. [2020-10-24 02:26:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-24 02:26:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 619 transitions. [2020-10-24 02:26:24,973 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 619 transitions. Word has length 145 [2020-10-24 02:26:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:24,973 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 619 transitions. [2020-10-24 02:26:24,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:26:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 619 transitions. [2020-10-24 02:26:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-24 02:26:24,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:24,976 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:24,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-24 02:26:24,976 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:24,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1333777400, now seen corresponding path program 2 times [2020-10-24 02:26:24,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:24,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775672511] [2020-10-24 02:26:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:26:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:26:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:26:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:26:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:26:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 02:26:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 41 proven. 16 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-24 02:26:25,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775672511] [2020-10-24 02:26:25,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:25,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:26:25,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606037984] [2020-10-24 02:26:25,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:26:25,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:25,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:26:25,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:25,174 INFO L87 Difference]: Start difference. First operand 477 states and 619 transitions. Second operand 12 states. [2020-10-24 02:26:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:26,862 INFO L93 Difference]: Finished difference Result 595 states and 787 transitions. [2020-10-24 02:26:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 02:26:26,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 158 [2020-10-24 02:26:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:26,871 INFO L225 Difference]: With dead ends: 595 [2020-10-24 02:26:26,872 INFO L226 Difference]: Without dead ends: 591 [2020-10-24 02:26:26,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2020-10-24 02:26:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-24 02:26:26,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 567. [2020-10-24 02:26:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-24 02:26:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 751 transitions. [2020-10-24 02:26:26,970 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 751 transitions. Word has length 158 [2020-10-24 02:26:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:26,971 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 751 transitions. [2020-10-24 02:26:26,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:26:26,971 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 751 transitions. [2020-10-24 02:26:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-24 02:26:26,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:26,973 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:26,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-24 02:26:26,974 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:26,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:26,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2115648297, now seen corresponding path program 1 times [2020-10-24 02:26:26,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:26,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845739641] [2020-10-24 02:26:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:26:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:26:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:26:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:26:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:26:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 42 proven. 10 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-24 02:26:27,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845739641] [2020-10-24 02:26:27,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:27,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:26:27,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109102494] [2020-10-24 02:26:27,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:26:27,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:27,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:26:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:27,183 INFO L87 Difference]: Start difference. First operand 567 states and 751 transitions. Second operand 12 states. [2020-10-24 02:26:29,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:29,014 INFO L93 Difference]: Finished difference Result 710 states and 952 transitions. [2020-10-24 02:26:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:26:29,014 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 160 [2020-10-24 02:26:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:29,020 INFO L225 Difference]: With dead ends: 710 [2020-10-24 02:26:29,020 INFO L226 Difference]: Without dead ends: 706 [2020-10-24 02:26:29,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:26:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-24 02:26:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 649. [2020-10-24 02:26:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-10-24 02:26:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 875 transitions. [2020-10-24 02:26:29,150 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 875 transitions. Word has length 160 [2020-10-24 02:26:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:29,151 INFO L481 AbstractCegarLoop]: Abstraction has 649 states and 875 transitions. [2020-10-24 02:26:29,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:26:29,151 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 875 transitions. [2020-10-24 02:26:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-24 02:26:29,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:29,154 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:29,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-24 02:26:29,154 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:29,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:29,155 INFO L82 PathProgramCache]: Analyzing trace with hash -495506893, now seen corresponding path program 2 times [2020-10-24 02:26:29,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:29,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559862344] [2020-10-24 02:26:29,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:26:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 02:26:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:26:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 42 proven. 10 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-24 02:26:29,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559862344] [2020-10-24 02:26:29,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:29,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:26:29,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612120992] [2020-10-24 02:26:29,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:26:29,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:29,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:26:29,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:29,376 INFO L87 Difference]: Start difference. First operand 649 states and 875 transitions. Second operand 12 states. [2020-10-24 02:26:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:31,184 INFO L93 Difference]: Finished difference Result 791 states and 1075 transitions. [2020-10-24 02:26:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 02:26:31,185 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 160 [2020-10-24 02:26:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:31,191 INFO L225 Difference]: With dead ends: 791 [2020-10-24 02:26:31,191 INFO L226 Difference]: Without dead ends: 787 [2020-10-24 02:26:31,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2020-10-24 02:26:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-24 02:26:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 659. [2020-10-24 02:26:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-24 02:26:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 889 transitions. [2020-10-24 02:26:31,316 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 889 transitions. Word has length 160 [2020-10-24 02:26:31,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:31,317 INFO L481 AbstractCegarLoop]: Abstraction has 659 states and 889 transitions. [2020-10-24 02:26:31,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:26:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 889 transitions. [2020-10-24 02:26:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-24 02:26:31,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:31,320 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:31,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-24 02:26:31,320 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:31,321 INFO L82 PathProgramCache]: Analyzing trace with hash -282214643, now seen corresponding path program 2 times [2020-10-24 02:26:31,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:31,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471239406] [2020-10-24 02:26:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 02:26:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:26:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-24 02:26:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:26:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-24 02:26:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 45 proven. 22 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-24 02:26:31,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471239406] [2020-10-24 02:26:31,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:31,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:26:31,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977382184] [2020-10-24 02:26:31,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:26:31,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:31,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:26:31,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:31,519 INFO L87 Difference]: Start difference. First operand 659 states and 889 transitions. Second operand 12 states. [2020-10-24 02:26:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:33,309 INFO L93 Difference]: Finished difference Result 732 states and 983 transitions. [2020-10-24 02:26:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:26:33,310 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 160 [2020-10-24 02:26:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:33,314 INFO L225 Difference]: With dead ends: 732 [2020-10-24 02:26:33,315 INFO L226 Difference]: Without dead ends: 728 [2020-10-24 02:26:33,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:26:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-24 02:26:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 693. [2020-10-24 02:26:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-24 02:26:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 934 transitions. [2020-10-24 02:26:33,447 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 934 transitions. Word has length 160 [2020-10-24 02:26:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:33,447 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 934 transitions. [2020-10-24 02:26:33,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:26:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 934 transitions. [2020-10-24 02:26:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-24 02:26:33,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:33,452 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:33,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-24 02:26:33,452 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:33,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:33,452 INFO L82 PathProgramCache]: Analyzing trace with hash -749319784, now seen corresponding path program 3 times [2020-10-24 02:26:33,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:33,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464816749] [2020-10-24 02:26:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:26:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:26:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:26:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:26:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:26:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 02:26:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-24 02:26:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:26:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 50 proven. 13 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-24 02:26:33,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464816749] [2020-10-24 02:26:33,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:33,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:26:33,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743373043] [2020-10-24 02:26:33,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:26:33,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:33,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:26:33,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:26:33,691 INFO L87 Difference]: Start difference. First operand 693 states and 934 transitions. Second operand 14 states. [2020-10-24 02:26:35,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:35,608 INFO L93 Difference]: Finished difference Result 799 states and 1078 transitions. [2020-10-24 02:26:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-24 02:26:35,608 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 168 [2020-10-24 02:26:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:35,614 INFO L225 Difference]: With dead ends: 799 [2020-10-24 02:26:35,614 INFO L226 Difference]: Without dead ends: 791 [2020-10-24 02:26:35,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2020-10-24 02:26:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-10-24 02:26:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 769. [2020-10-24 02:26:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-24 02:26:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1043 transitions. [2020-10-24 02:26:35,763 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1043 transitions. Word has length 168 [2020-10-24 02:26:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:35,763 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1043 transitions. [2020-10-24 02:26:35,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:26:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1043 transitions. [2020-10-24 02:26:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-24 02:26:35,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:35,767 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:35,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-24 02:26:35,767 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:35,768 INFO L82 PathProgramCache]: Analyzing trace with hash -927477348, now seen corresponding path program 1 times [2020-10-24 02:26:35,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:35,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439384761] [2020-10-24 02:26:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:26:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:26:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:26:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:26:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:26:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:26:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-24 02:26:35,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439384761] [2020-10-24 02:26:35,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:35,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:26:35,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044622957] [2020-10-24 02:26:35,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:26:35,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:35,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:26:35,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:26:35,999 INFO L87 Difference]: Start difference. First operand 769 states and 1043 transitions. Second operand 14 states. [2020-10-24 02:26:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:38,035 INFO L93 Difference]: Finished difference Result 835 states and 1124 transitions. [2020-10-24 02:26:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:26:38,035 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 170 [2020-10-24 02:26:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:38,041 INFO L225 Difference]: With dead ends: 835 [2020-10-24 02:26:38,041 INFO L226 Difference]: Without dead ends: 827 [2020-10-24 02:26:38,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:26:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2020-10-24 02:26:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 795. [2020-10-24 02:26:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-24 02:26:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1079 transitions. [2020-10-24 02:26:38,194 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1079 transitions. Word has length 170 [2020-10-24 02:26:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:38,194 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 1079 transitions. [2020-10-24 02:26:38,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:26:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1079 transitions. [2020-10-24 02:26:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-24 02:26:38,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:38,197 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:38,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-24 02:26:38,197 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:38,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1109066714, now seen corresponding path program 2 times [2020-10-24 02:26:38,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:38,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521970905] [2020-10-24 02:26:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:26:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 02:26:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:26:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:26:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 44 proven. 12 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-24 02:26:38,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521970905] [2020-10-24 02:26:38,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:38,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:26:38,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052127810] [2020-10-24 02:26:38,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:26:38,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:38,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:26:38,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:26:38,444 INFO L87 Difference]: Start difference. First operand 795 states and 1079 transitions. Second operand 14 states. [2020-10-24 02:26:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:40,757 INFO L93 Difference]: Finished difference Result 876 states and 1181 transitions. [2020-10-24 02:26:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-24 02:26:40,758 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 170 [2020-10-24 02:26:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:40,764 INFO L225 Difference]: With dead ends: 876 [2020-10-24 02:26:40,765 INFO L226 Difference]: Without dead ends: 868 [2020-10-24 02:26:40,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2020-10-24 02:26:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-10-24 02:26:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 760. [2020-10-24 02:26:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-10-24 02:26:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1027 transitions. [2020-10-24 02:26:40,931 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1027 transitions. Word has length 170 [2020-10-24 02:26:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:40,932 INFO L481 AbstractCegarLoop]: Abstraction has 760 states and 1027 transitions. [2020-10-24 02:26:40,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:26:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1027 transitions. [2020-10-24 02:26:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-24 02:26:40,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:40,935 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:40,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-24 02:26:40,936 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:40,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:40,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1516429715, now seen corresponding path program 2 times [2020-10-24 02:26:40,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:40,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54517366] [2020-10-24 02:26:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 02:26:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:26:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-24 02:26:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:26:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-24 02:26:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:26:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 52 proven. 19 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-24 02:26:41,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54517366] [2020-10-24 02:26:41,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:41,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:26:41,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544525219] [2020-10-24 02:26:41,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:26:41,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:41,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:26:41,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:26:41,140 INFO L87 Difference]: Start difference. First operand 760 states and 1027 transitions. Second operand 12 states. [2020-10-24 02:26:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:42,857 INFO L93 Difference]: Finished difference Result 810 states and 1080 transitions. [2020-10-24 02:26:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:26:42,857 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-24 02:26:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:42,862 INFO L225 Difference]: With dead ends: 810 [2020-10-24 02:26:42,862 INFO L226 Difference]: Without dead ends: 806 [2020-10-24 02:26:42,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:26:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-10-24 02:26:43,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 774. [2020-10-24 02:26:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-10-24 02:26:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1044 transitions. [2020-10-24 02:26:43,014 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1044 transitions. Word has length 170 [2020-10-24 02:26:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:43,015 INFO L481 AbstractCegarLoop]: Abstraction has 774 states and 1044 transitions. [2020-10-24 02:26:43,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:26:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1044 transitions. [2020-10-24 02:26:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-24 02:26:43,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:43,018 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:43,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-24 02:26:43,018 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2005153258, now seen corresponding path program 2 times [2020-10-24 02:26:43,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:43,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682588093] [2020-10-24 02:26:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 02:26:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:26:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-24 02:26:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:26:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-24 02:26:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:26:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-24 02:26:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:26:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 56 proven. 19 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-24 02:26:43,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682588093] [2020-10-24 02:26:43,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:43,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:26:43,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693027509] [2020-10-24 02:26:43,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:26:43,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:43,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:26:43,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:26:43,273 INFO L87 Difference]: Start difference. First operand 774 states and 1044 transitions. Second operand 14 states. [2020-10-24 02:26:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:45,443 INFO L93 Difference]: Finished difference Result 822 states and 1093 transitions. [2020-10-24 02:26:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:26:45,444 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2020-10-24 02:26:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:45,450 INFO L225 Difference]: With dead ends: 822 [2020-10-24 02:26:45,451 INFO L226 Difference]: Without dead ends: 818 [2020-10-24 02:26:45,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:26:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-24 02:26:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 786. [2020-10-24 02:26:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2020-10-24 02:26:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1057 transitions. [2020-10-24 02:26:45,616 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1057 transitions. Word has length 186 [2020-10-24 02:26:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:45,616 INFO L481 AbstractCegarLoop]: Abstraction has 786 states and 1057 transitions. [2020-10-24 02:26:45,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:26:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1057 transitions. [2020-10-24 02:26:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-24 02:26:45,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:45,621 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:45,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-24 02:26:45,621 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:45,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1909526749, now seen corresponding path program 3 times [2020-10-24 02:26:45,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:45,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080356525] [2020-10-24 02:26:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:26:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:26:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:26:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:26:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:26:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-24 02:26:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:26:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-24 02:26:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:26:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-24 02:26:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 59 proven. 22 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-24 02:26:45,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080356525] [2020-10-24 02:26:45,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:45,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:26:45,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131797973] [2020-10-24 02:26:45,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:26:45,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:45,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:26:45,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:26:45,869 INFO L87 Difference]: Start difference. First operand 786 states and 1057 transitions. Second operand 14 states. [2020-10-24 02:26:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:48,196 INFO L93 Difference]: Finished difference Result 1115 states and 1530 transitions. [2020-10-24 02:26:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-24 02:26:48,197 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2020-10-24 02:26:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:48,205 INFO L225 Difference]: With dead ends: 1115 [2020-10-24 02:26:48,206 INFO L226 Difference]: Without dead ends: 1111 [2020-10-24 02:26:48,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2020-10-24 02:26:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2020-10-24 02:26:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1025. [2020-10-24 02:26:48,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-10-24 02:26:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1413 transitions. [2020-10-24 02:26:48,436 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1413 transitions. Word has length 199 [2020-10-24 02:26:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:48,437 INFO L481 AbstractCegarLoop]: Abstraction has 1025 states and 1413 transitions. [2020-10-24 02:26:48,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:26:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1413 transitions. [2020-10-24 02:26:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-24 02:26:48,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:48,441 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:48,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-24 02:26:48,441 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash -954254390, now seen corresponding path program 4 times [2020-10-24 02:26:48,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:48,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797060197] [2020-10-24 02:26:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:26:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 02:26:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:26:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-24 02:26:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:26:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-24 02:26:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:26:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-24 02:26:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 65 proven. 26 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-24 02:26:48,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797060197] [2020-10-24 02:26:48,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:48,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:26:48,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175720195] [2020-10-24 02:26:48,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:26:48,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:48,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:26:48,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:26:48,693 INFO L87 Difference]: Start difference. First operand 1025 states and 1413 transitions. Second operand 14 states. [2020-10-24 02:26:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:51,337 INFO L93 Difference]: Finished difference Result 1445 states and 2022 transitions. [2020-10-24 02:26:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-24 02:26:51,338 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 201 [2020-10-24 02:26:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:51,349 INFO L225 Difference]: With dead ends: 1445 [2020-10-24 02:26:51,349 INFO L226 Difference]: Without dead ends: 1441 [2020-10-24 02:26:51,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-10-24 02:26:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2020-10-24 02:26:51,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1356. [2020-10-24 02:26:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-10-24 02:26:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1899 transitions. [2020-10-24 02:26:51,575 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1899 transitions. Word has length 201 [2020-10-24 02:26:51,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:51,576 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 1899 transitions. [2020-10-24 02:26:51,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:26:51,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1899 transitions. [2020-10-24 02:26:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-24 02:26:51,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:51,580 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:51,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-24 02:26:51,580 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:51,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:51,581 INFO L82 PathProgramCache]: Analyzing trace with hash 729557716, now seen corresponding path program 5 times [2020-10-24 02:26:51,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:51,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622706383] [2020-10-24 02:26:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 02:26:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:26:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-24 02:26:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:26:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-24 02:26:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:26:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-24 02:26:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:26:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-24 02:26:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-24 02:26:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 65 proven. 26 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-24 02:26:51,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622706383] [2020-10-24 02:26:51,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:51,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:26:51,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858792603] [2020-10-24 02:26:51,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:26:51,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:51,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:26:51,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:26:51,856 INFO L87 Difference]: Start difference. First operand 1356 states and 1899 transitions. Second operand 14 states. [2020-10-24 02:26:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:54,543 INFO L93 Difference]: Finished difference Result 1686 states and 2377 transitions. [2020-10-24 02:26:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-24 02:26:54,544 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 201 [2020-10-24 02:26:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:54,557 INFO L225 Difference]: With dead ends: 1686 [2020-10-24 02:26:54,557 INFO L226 Difference]: Without dead ends: 1682 [2020-10-24 02:26:54,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2020-10-24 02:26:54,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2020-10-24 02:26:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1356. [2020-10-24 02:26:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-10-24 02:26:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1899 transitions. [2020-10-24 02:26:54,861 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1899 transitions. Word has length 201 [2020-10-24 02:26:54,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:54,862 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 1899 transitions. [2020-10-24 02:26:54,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:26:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1899 transitions. [2020-10-24 02:26:54,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-24 02:26:54,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:54,866 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:54,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-24 02:26:54,866 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:54,866 INFO L82 PathProgramCache]: Analyzing trace with hash -460739837, now seen corresponding path program 6 times [2020-10-24 02:26:54,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:54,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856842030] [2020-10-24 02:26:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:26:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:26:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:26:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:26:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:26:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:26:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:26:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:26:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:26:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-24 02:26:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:26:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-24 02:26:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:26:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-24 02:26:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:26:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-24 02:26:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 68 proven. 19 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-24 02:26:55,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856842030] [2020-10-24 02:26:55,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:55,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:26:55,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893197710] [2020-10-24 02:26:55,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:26:55,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:55,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:26:55,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:26:55,157 INFO L87 Difference]: Start difference. First operand 1356 states and 1899 transitions. Second operand 16 states. [2020-10-24 02:26:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:26:57,890 INFO L93 Difference]: Finished difference Result 1613 states and 2255 transitions. [2020-10-24 02:26:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-24 02:26:57,890 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 209 [2020-10-24 02:26:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:26:57,901 INFO L225 Difference]: With dead ends: 1613 [2020-10-24 02:26:57,901 INFO L226 Difference]: Without dead ends: 1601 [2020-10-24 02:26:57,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2020-10-24 02:26:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2020-10-24 02:26:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1520. [2020-10-24 02:26:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1520 states. [2020-10-24 02:26:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2138 transitions. [2020-10-24 02:26:58,139 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2138 transitions. Word has length 209 [2020-10-24 02:26:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:26:58,140 INFO L481 AbstractCegarLoop]: Abstraction has 1520 states and 2138 transitions. [2020-10-24 02:26:58,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:26:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2138 transitions. [2020-10-24 02:26:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-24 02:26:58,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:26:58,144 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:26:58,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-24 02:26:58,144 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:26:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:26:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash -212779779, now seen corresponding path program 3 times [2020-10-24 02:26:58,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:26:58,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434577032] [2020-10-24 02:26:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:26:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:26:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:26:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:26:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:26:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:26:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:26:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:26:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:26:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:26:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:26:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:26:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:26:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:26:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:26:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:26:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:26:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:26:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 02:26:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:26:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:26:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:26:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-24 02:26:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:26:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-24 02:26:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:26:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-24 02:26:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-24 02:26:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-24 02:26:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:26:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1501 backedges. 72 proven. 25 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-24 02:26:58,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434577032] [2020-10-24 02:26:58,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:26:58,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:26:58,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744106184] [2020-10-24 02:26:58,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:26:58,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:26:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:26:58,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:26:58,440 INFO L87 Difference]: Start difference. First operand 1520 states and 2138 transitions. Second operand 16 states. [2020-10-24 02:27:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:01,445 INFO L93 Difference]: Finished difference Result 1890 states and 2658 transitions. [2020-10-24 02:27:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-24 02:27:01,445 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 211 [2020-10-24 02:27:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:01,457 INFO L225 Difference]: With dead ends: 1890 [2020-10-24 02:27:01,457 INFO L226 Difference]: Without dead ends: 1878 [2020-10-24 02:27:01,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=1107, Unknown=0, NotChecked=0, Total=1332 [2020-10-24 02:27:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-10-24 02:27:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1775. [2020-10-24 02:27:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1775 states. [2020-10-24 02:27:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2503 transitions. [2020-10-24 02:27:01,897 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2503 transitions. Word has length 211 [2020-10-24 02:27:01,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:01,897 INFO L481 AbstractCegarLoop]: Abstraction has 1775 states and 2503 transitions. [2020-10-24 02:27:01,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:27:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2503 transitions. [2020-10-24 02:27:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-24 02:27:01,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:01,903 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:27:01,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-24 02:27:01,903 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash -394369145, now seen corresponding path program 4 times [2020-10-24 02:27:01,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:01,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086909880] [2020-10-24 02:27:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:27:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:27:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:27:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:27:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:27:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:27:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:27:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-24 02:27:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:27:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:27:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 02:27:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:27:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 02:27:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:27:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:27:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-24 02:27:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:27:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-24 02:27:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:27:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:27:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:27:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-24 02:27:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:27:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-24 02:27:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-24 02:27:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-24 02:27:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-24 02:27:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1501 backedges. 72 proven. 25 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-24 02:27:02,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086909880] [2020-10-24 02:27:02,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:02,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:27:02,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774543601] [2020-10-24 02:27:02,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:27:02,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:02,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:27:02,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:27:02,216 INFO L87 Difference]: Start difference. First operand 1775 states and 2503 transitions. Second operand 16 states. [2020-10-24 02:27:05,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:05,321 INFO L93 Difference]: Finished difference Result 1980 states and 2781 transitions. [2020-10-24 02:27:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-24 02:27:05,322 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 211 [2020-10-24 02:27:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:05,335 INFO L225 Difference]: With dead ends: 1980 [2020-10-24 02:27:05,335 INFO L226 Difference]: Without dead ends: 1968 [2020-10-24 02:27:05,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2020-10-24 02:27:05,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2020-10-24 02:27:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1723. [2020-10-24 02:27:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1723 states. [2020-10-24 02:27:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2425 transitions. [2020-10-24 02:27:05,624 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2425 transitions. Word has length 211 [2020-10-24 02:27:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:05,625 INFO L481 AbstractCegarLoop]: Abstraction has 1723 states and 2425 transitions. [2020-10-24 02:27:05,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:27:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2425 transitions. [2020-10-24 02:27:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-24 02:27:05,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:05,630 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:27:05,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-24 02:27:05,630 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:05,631 INFO L82 PathProgramCache]: Analyzing trace with hash -639198092, now seen corresponding path program 7 times [2020-10-24 02:27:05,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:05,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884267571] [2020-10-24 02:27:05,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:27:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:27:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:27:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:27:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:27:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:27:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:27:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:27:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:27:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:27:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:27:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:27:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:27:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:27:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:27:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:27:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:27:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:27:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 02:27:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-24 02:27:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:27:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-24 02:27:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:27:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-24 02:27:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-24 02:27:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:27:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:27:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-24 02:27:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:27:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-24 02:27:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:27:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 92 proven. 26 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-24 02:27:05,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884267571] [2020-10-24 02:27:05,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:05,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:27:05,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484927794] [2020-10-24 02:27:05,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:27:05,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:05,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:27:05,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:27:05,940 INFO L87 Difference]: Start difference. First operand 1723 states and 2425 transitions. Second operand 16 states. [2020-10-24 02:27:09,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:09,041 INFO L93 Difference]: Finished difference Result 2235 states and 3165 transitions. [2020-10-24 02:27:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-24 02:27:09,041 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 240 [2020-10-24 02:27:09,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:09,058 INFO L225 Difference]: With dead ends: 2235 [2020-10-24 02:27:09,058 INFO L226 Difference]: Without dead ends: 2231 [2020-10-24 02:27:09,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2020-10-24 02:27:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-10-24 02:27:09,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1723. [2020-10-24 02:27:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1723 states. [2020-10-24 02:27:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2425 transitions. [2020-10-24 02:27:09,337 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2425 transitions. Word has length 240 [2020-10-24 02:27:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:09,338 INFO L481 AbstractCegarLoop]: Abstraction has 1723 states and 2425 transitions. [2020-10-24 02:27:09,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:27:09,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2425 transitions. [2020-10-24 02:27:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-24 02:27:09,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:09,343 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:27:09,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-24 02:27:09,343 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:09,344 INFO L82 PathProgramCache]: Analyzing trace with hash 473911591, now seen corresponding path program 5 times [2020-10-24 02:27:09,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:09,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181695621] [2020-10-24 02:27:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:27:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:27:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:27:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:27:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:27:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:27:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:27:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:27:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:27:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:27:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:27:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:27:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:27:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:27:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:27:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:27:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:27:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:27:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 02:27:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-24 02:27:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:27:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-24 02:27:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:27:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-24 02:27:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-24 02:27:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:27:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:27:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-24 02:27:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:27:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-24 02:27:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:27:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-24 02:27:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:27:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 99 proven. 21 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-24 02:27:09,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181695621] [2020-10-24 02:27:09,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:09,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-24 02:27:09,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262410426] [2020-10-24 02:27:09,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-24 02:27:09,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:09,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-24 02:27:09,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:27:09,765 INFO L87 Difference]: Start difference. First operand 1723 states and 2425 transitions. Second operand 20 states. [2020-10-24 02:27:13,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:13,361 INFO L93 Difference]: Finished difference Result 1923 states and 2694 transitions. [2020-10-24 02:27:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-24 02:27:13,361 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 250 [2020-10-24 02:27:13,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:13,375 INFO L225 Difference]: With dead ends: 1923 [2020-10-24 02:27:13,376 INFO L226 Difference]: Without dead ends: 1911 [2020-10-24 02:27:13,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2020-10-24 02:27:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-10-24 02:27:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1813. [2020-10-24 02:27:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-10-24 02:27:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2550 transitions. [2020-10-24 02:27:13,831 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2550 transitions. Word has length 250 [2020-10-24 02:27:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:13,832 INFO L481 AbstractCegarLoop]: Abstraction has 1813 states and 2550 transitions. [2020-10-24 02:27:13,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-24 02:27:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2550 transitions. [2020-10-24 02:27:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-24 02:27:13,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:13,839 INFO L422 BasicCegarLoop]: trace histogram [38, 37, 37, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:27:13,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-24 02:27:13,840 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:13,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:13,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1440966354, now seen corresponding path program 8 times [2020-10-24 02:27:13,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:13,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824617023] [2020-10-24 02:27:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:27:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:27:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:27:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:27:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:27:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:27:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:27:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:27:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:27:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:27:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:27:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:27:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:27:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:27:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:27:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:27:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:27:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:27:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:27:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:27:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-24 02:27:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:27:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-24 02:27:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:27:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-24 02:27:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:27:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-24 02:27:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:27:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-24 02:27:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:27:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:27:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-24 02:27:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-24 02:27:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:27:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-24 02:27:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:27:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-24 02:27:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2826 backedges. 124 proven. 38 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-24 02:27:14,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824617023] [2020-10-24 02:27:14,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:14,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-24 02:27:14,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421226393] [2020-10-24 02:27:14,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-24 02:27:14,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-24 02:27:14,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-24 02:27:14,188 INFO L87 Difference]: Start difference. First operand 1813 states and 2550 transitions. Second operand 18 states. [2020-10-24 02:27:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:17,876 INFO L93 Difference]: Finished difference Result 2055 states and 2883 transitions. [2020-10-24 02:27:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-24 02:27:17,877 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 279 [2020-10-24 02:27:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:17,887 INFO L225 Difference]: With dead ends: 2055 [2020-10-24 02:27:17,888 INFO L226 Difference]: Without dead ends: 2051 [2020-10-24 02:27:17,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2020-10-24 02:27:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2020-10-24 02:27:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1399. [2020-10-24 02:27:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2020-10-24 02:27:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1941 transitions. [2020-10-24 02:27:18,199 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1941 transitions. Word has length 279 [2020-10-24 02:27:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:18,200 INFO L481 AbstractCegarLoop]: Abstraction has 1399 states and 1941 transitions. [2020-10-24 02:27:18,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-24 02:27:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1941 transitions. [2020-10-24 02:27:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-24 02:27:18,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:18,207 INFO L422 BasicCegarLoop]: trace histogram [40, 39, 39, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:27:18,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-24 02:27:18,207 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:18,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:18,208 INFO L82 PathProgramCache]: Analyzing trace with hash 12485454, now seen corresponding path program 9 times [2020-10-24 02:27:18,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:18,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483132054] [2020-10-24 02:27:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:27:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 02:27:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:27:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:27:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-24 02:27:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-24 02:27:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:27:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-24 02:27:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:27:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-24 02:27:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:27:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 02:27:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:27:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:27:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:27:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 02:27:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:27:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-24 02:27:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:27:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-24 02:27:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-24 02:27:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:27:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-24 02:27:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:27:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-24 02:27:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:27:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-24 02:27:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:27:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-24 02:27:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:27:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:27:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-24 02:27:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-24 02:27:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:27:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-24 02:27:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:27:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-24 02:27:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:27:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-24 02:27:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3134 backedges. 138 proven. 32 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-24 02:27:18,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483132054] [2020-10-24 02:27:18,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:18,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-24 02:27:18,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023285340] [2020-10-24 02:27:18,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-24 02:27:18,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:18,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-24 02:27:18,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-10-24 02:27:18,673 INFO L87 Difference]: Start difference. First operand 1399 states and 1941 transitions. Second operand 22 states. [2020-10-24 02:27:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:22,548 INFO L93 Difference]: Finished difference Result 1497 states and 2067 transitions. [2020-10-24 02:27:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-24 02:27:22,549 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 289 [2020-10-24 02:27:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:22,550 INFO L225 Difference]: With dead ends: 1497 [2020-10-24 02:27:22,551 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:27:22,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=443, Invalid=2209, Unknown=0, NotChecked=0, Total=2652 [2020-10-24 02:27:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:27:22,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:27:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:27:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:27:22,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 289 [2020-10-24 02:27:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:22,557 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:27:22,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-24 02:27:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:27:22,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:27:22,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-24 02:27:22,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:27:24,029 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 307 DAG size of output: 241 [2020-10-24 02:27:24,243 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 122 [2020-10-24 02:27:24,555 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 150 [2020-10-24 02:27:24,845 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 151 [2020-10-24 02:27:25,936 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 375 DAG size of output: 305 [2020-10-24 02:27:26,422 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 157 [2020-10-24 02:27:26,648 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 131 [2020-10-24 02:27:27,015 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 225 [2020-10-24 02:27:27,209 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 156 [2020-10-24 02:27:27,364 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 139 [2020-10-24 02:27:27,702 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 185 [2020-10-24 02:27:28,089 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 206 [2020-10-24 02:27:28,901 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 248 [2020-10-24 02:27:29,061 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 156 [2020-10-24 02:27:29,220 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 156 [2020-10-24 02:27:29,399 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 152 [2020-10-24 02:27:30,073 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 305 [2020-10-24 02:27:30,647 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 248 [2020-10-24 02:27:32,655 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 550 DAG size of output: 301 [2020-10-24 02:27:33,149 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 205 [2020-10-24 02:27:34,194 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 193 [2020-10-24 02:27:34,535 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 212 [2020-10-24 02:27:35,295 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 156 [2020-10-24 02:27:35,509 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 139 [2020-10-24 02:27:36,558 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 425 DAG size of output: 321 [2020-10-24 02:27:37,621 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 248 [2020-10-24 02:27:37,867 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 153 [2020-10-24 02:27:38,036 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 111 [2020-10-24 02:27:39,768 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 523 DAG size of output: 342 [2020-10-24 02:27:40,242 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 227 [2020-10-24 02:27:40,402 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 156 [2020-10-24 02:27:40,963 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 180 [2020-10-24 02:27:41,123 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 150 [2020-10-24 02:27:41,456 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 212 [2020-10-24 02:27:41,615 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 156 [2020-10-24 02:27:41,828 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 159 [2020-10-24 02:27:42,933 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 438 DAG size of output: 351 [2020-10-24 02:27:44,961 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 213 DAG size of output: 24 [2020-10-24 02:27:45,277 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 18 [2020-10-24 02:27:45,763 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 21 [2020-10-24 02:27:46,139 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 16 [2020-10-24 02:27:48,253 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 269 DAG size of output: 23 [2020-10-24 02:27:48,498 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 19 [2020-10-24 02:27:48,792 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 25 [2020-10-24 02:27:49,580 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 25 [2020-10-24 02:27:49,943 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 20 [2020-10-24 02:27:50,956 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 199 DAG size of output: 31 [2020-10-24 02:27:51,699 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 25 [2020-10-24 02:27:52,092 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 18 [2020-10-24 02:27:52,818 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 26 [2020-10-24 02:27:53,859 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 181 DAG size of output: 35 [2020-10-24 02:27:55,676 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 221 DAG size of output: 30 [2020-10-24 02:27:56,412 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 25 [2020-10-24 02:27:57,128 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 25 [2020-10-24 02:27:57,465 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 16 [2020-10-24 02:27:59,546 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 269 DAG size of output: 23 [2020-10-24 02:27:59,780 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 16 [2020-10-24 02:28:01,195 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 224 DAG size of output: 24 [2020-10-24 02:28:01,476 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 17 [2020-10-24 02:28:04,399 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 271 DAG size of output: 25 [2020-10-24 02:28:04,798 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 26 [2020-10-24 02:28:05,742 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 28 [2020-10-24 02:28:06,767 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 23 [2020-10-24 02:28:08,119 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 187 DAG size of output: 27 [2020-10-24 02:28:08,916 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 25 [2020-10-24 02:28:09,366 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 16 [2020-10-24 02:28:11,806 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 296 DAG size of output: 30 [2020-10-24 02:28:13,310 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 224 DAG size of output: 24 [2020-10-24 02:28:13,566 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 16 [2020-10-24 02:28:14,018 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 23 [2020-10-24 02:28:14,347 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 16 [2020-10-24 02:28:18,271 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 310 DAG size of output: 26 [2020-10-24 02:28:18,564 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 16 [2020-10-24 02:28:20,132 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 205 DAG size of output: 23 [2020-10-24 02:28:20,876 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 25 [2020-10-24 02:28:21,835 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 25 [2020-10-24 02:28:22,334 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 22 [2020-10-24 02:28:23,440 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 192 DAG size of output: 32 [2020-10-24 02:28:24,144 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 25 [2020-10-24 02:28:24,706 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 20 [2020-10-24 02:28:27,121 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 316 DAG size of output: 37 [2020-10-24 02:28:27,429 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 16 [2020-10-24 02:28:27,437 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,437 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,438 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,438 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,438 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,438 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,438 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:28:27,438 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:28:27,438 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,438 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,439 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,439 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,439 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-24 02:28:27,439 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:28:27,439 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:28:27,439 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:28:27,439 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:28:27,439 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:28:27,439 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:28:27,440 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 02:28:27,440 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-24 02:28:27,440 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:28:27,440 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:28:27,440 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:28:27,440 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 64) the Hoare annotation is: (let ((.cse0 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and (<= 1 main_~j~0) (<= 1 main_~i~0) .cse0) (and (<= (+ main_~i~0 1) main_~len~0) (= main_~j~0 0) (<= 0 main_~i~0) .cse0) (and (<= 2 main_~len~0) (<= main_~len~0 main_~i~0) .cse0))) [2020-10-24 02:28:27,440 INFO L277 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-10-24 02:28:27,441 INFO L277 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: true [2020-10-24 02:28:27,441 INFO L270 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (let ((.cse1 (= main_~j~0 0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (< main_~i~0 main_~len~0)) (.cse3 (<= 1 main_~i~0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= main_~len~0 (+ main_~i~0 1)) .cse3 .cse2 .cse4) (and .cse0 (= main_~i~0 0) .cse1 .cse2 .cse4) (and (<= 1 main_~j~0) .cse0 .cse2 .cse3 .cse4))) [2020-10-24 02:28:27,441 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-24 02:28:27,441 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 67) the Hoare annotation is: true [2020-10-24 02:28:27,441 INFO L270 CegarLoopResult]: At program point L56(lines 36 63) the Hoare annotation is: (let ((.cse1 (<= 1 main_~j~0)) (.cse3 (+ main_~i~0 1)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (< main_~i~0 main_~len~0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 (<= 2 main_~len~0) .cse2 (<= main_~len~0 .cse3) .cse4) (and .cse0 .cse1 (<= 1 main_~i~0) (< .cse3 main_~len~0) .cse4) (and .cse0 (= main_~j~0 0) .cse2 (<= 0 main_~i~0) .cse4))) [2020-10-24 02:28:27,441 INFO L270 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 2 main_~i~0) (<= 2 main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0)) [2020-10-24 02:28:27,441 INFO L270 CegarLoopResult]: At program point L52-1(line 52) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 2 main_~i~0) (<= 2 main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0)) [2020-10-24 02:28:27,441 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (and (<= 1 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-24 02:28:27,441 INFO L270 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse5 (<= 1 main_~i~0)) (.cse1 (= main_~j~0 0)) (.cse2 (= |main_#t~post6| 0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (= main_~i~0 0) .cse1 .cse2 .cse3 .cse4) (and (<= 1 main_~j~0) .cse0 .cse5 (<= (+ |main_#t~post6| 5) main_~bufsize~0) .cse3 .cse4 (<= 1 |main_#t~post6|)) (and .cse0 .cse5 .cse1 .cse2 .cse3 .cse4))) [2020-10-24 02:28:27,442 INFO L270 CegarLoopResult]: At program point L44-1(line 44) the Hoare annotation is: (let ((.cse0 (<= 1 main_~j~0)) (.cse2 (= |main_#t~post6| 0)) (.cse1 (<= 1 main_~i~0)) (.cse3 (<= (+ main_~limit~0 4) main_~bufsize~0)) (.cse4 (<= (+ main_~j~0 4) main_~bufsize~0))) (or (and .cse0 (<= (+ main_~i~0 2) main_~len~0) .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse3 .cse4) (and .cse1 (<= (+ |main_#t~post6| 5) main_~bufsize~0) (< (+ main_~i~0 1) main_~len~0) .cse3 (<= 1 |main_#t~post6|) (<= 2 main_~j~0) .cse4))) [2020-10-24 02:28:27,442 INFO L270 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (= main_~j~0 0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~j~0) .cse1 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse4))) [2020-10-24 02:28:27,442 INFO L270 CegarLoopResult]: At program point L40-1(line 40) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (= main_~j~0 0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~j~0) .cse1 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse4))) [2020-10-24 02:28:27,442 INFO L270 CegarLoopResult]: At program point L36(lines 36 63) the Hoare annotation is: (let ((.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse1 (< main_~i~0 main_~len~0)) (.cse2 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (<= 1 main_~j~0) (<= 1 main_~i~0) .cse1 .cse2) (and .cse0 (= main_~j~0 0) .cse1 (<= 0 main_~i~0) .cse2))) [2020-10-24 02:28:27,442 INFO L277 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-10-24 02:28:27,442 INFO L277 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true [2020-10-24 02:28:27,442 INFO L277 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: true [2020-10-24 02:28:27,443 INFO L270 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (let ((.cse1 (= main_~j~0 0)) (.cse3 (= 0 |main_#t~post11|)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse5 (<= 1 main_~i~0)) (.cse2 (< main_~i~0 main_~len~0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (= main_~i~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 (<= (+ main_~i~0 2) main_~len~0) .cse1 .cse3 .cse4) (and .cse0 (<= main_~len~0 (+ main_~i~0 1)) .cse5 .cse2 .cse4) (and (<= 1 main_~j~0) .cse0 .cse5 .cse2 .cse4 (<= 1 |main_#t~post11|)))) [2020-10-24 02:28:27,443 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-24 02:28:27,443 INFO L270 CegarLoopResult]: At program point L61-1(line 61) the Hoare annotation is: (let ((.cse0 (<= 1 main_~j~0)) (.cse2 (= 0 |main_#t~post11|)) (.cse1 (< main_~i~0 main_~len~0)) (.cse4 (<= (+ main_~i~0 2) main_~len~0)) (.cse5 (<= 1 main_~i~0)) (.cse3 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (= main_~i~0 0) .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse5 .cse2 .cse3) (and (<= main_~len~0 (+ main_~i~0 1)) .cse1 .cse5 .cse3) (and .cse4 .cse5 .cse3 (<= 2 main_~j~0) (<= 1 |main_#t~post11|)))) [2020-10-24 02:28:27,443 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse4 (= main_~j~0 0)) (.cse2 (< main_~i~0 main_~len~0)) (.cse3 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (<= 1 main_~j~0) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse4 .cse2 .cse3) (and .cse0 (= main_~i~0 0) .cse4 .cse2 .cse3))) [2020-10-24 02:28:27,443 INFO L270 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 2 main_~i~0) (<= 2 main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0)) [2020-10-24 02:28:27,443 INFO L270 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= 1 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-24 02:28:27,444 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (<= 1 main_~j~0)) (.cse1 (<= (+ main_~limit~0 4) main_~bufsize~0)) (.cse2 (<= (+ main_~j~0 4) main_~bufsize~0))) (or (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse1 .cse2) (and .cse0 (<= 1 main_~i~0) (< (+ main_~i~0 1) main_~len~0) .cse1 .cse2))) [2020-10-24 02:28:27,444 INFO L270 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse0 (<= 1 main_~j~0)) (.cse1 (<= (+ |main_#t~post7| 2) main_~len~0)) (.cse2 (<= (+ main_~limit~0 4) main_~bufsize~0)) (.cse3 (<= (+ main_~j~0 4) main_~bufsize~0))) (or (and .cse0 (= |main_#t~post7| 0) (= main_~i~0 0) .cse1 .cse2 .cse3) (and .cse0 .cse1 (<= 1 main_~i~0) (<= 1 |main_#t~post7|) (< (+ main_~i~0 1) main_~len~0) .cse2 .cse3))) [2020-10-24 02:28:27,444 INFO L270 CegarLoopResult]: At program point L45-2(line 45) the Hoare annotation is: (let ((.cse0 (<= 1 main_~j~0)) (.cse1 (<= (+ main_~i~0 1) main_~len~0)) (.cse2 (<= (+ main_~limit~0 4) main_~bufsize~0)) (.cse3 (<= (+ main_~j~0 4) main_~bufsize~0))) (or (and .cse0 (<= 2 main_~i~0) .cse1 (<= (+ |main_#t~post7| 2) main_~len~0) (<= 1 |main_#t~post7|) .cse2 .cse3) (and .cse0 (= |main_#t~post7| 0) .cse1 (<= 1 main_~i~0) .cse2 .cse3))) [2020-10-24 02:28:27,444 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse1 (<= 0 main_~j~0)) (.cse2 (< (+ main_~i~0 1) main_~len~0)) (.cse3 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 (= main_~i~0 0) (= main_~j~0 0) .cse2 .cse3) (and .cse0 .cse1 (<= 1 main_~i~0) .cse2 .cse3))) [2020-10-24 02:28:27,444 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (= main_~j~0 0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~j~0) .cse1 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse4))) [2020-10-24 02:28:27,444 INFO L270 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (= main_~j~0 0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~j~0) .cse1 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse4))) [2020-10-24 02:28:27,444 INFO L277 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-10-24 02:28:27,444 INFO L270 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (< main_~i~0 main_~len~0)) (.cse3 (<= 1 main_~j~0)) (.cse1 (<= 1 main_~i~0)) (.cse2 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and (<= main_~len~0 (+ main_~i~0 1)) .cse0 .cse1 .cse2) (and .cse3 (= main_~i~0 0) .cse0 .cse2) (and .cse3 (<= (+ main_~i~0 2) main_~len~0) .cse1 .cse2))) [2020-10-24 02:28:27,444 INFO L277 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-10-24 02:28:27,445 INFO L270 CegarLoopResult]: At program point L62-1(line 62) the Hoare annotation is: (let ((.cse0 (<= 1 main_~j~0)) (.cse1 (< main_~i~0 main_~len~0)) (.cse3 (<= 1 main_~i~0)) (.cse2 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (= 0 |main_#t~post12|) (= main_~i~0 0) .cse1 .cse2) (and .cse0 (<= 1 |main_#t~post12|) (<= (+ main_~i~0 2) main_~len~0) .cse3 .cse2) (and .cse1 .cse3 (<= main_~len~0 (+ main_~i~0 1)) (<= main_~len~0 (+ |main_#t~post12| 1)) .cse2))) [2020-10-24 02:28:27,445 INFO L270 CegarLoopResult]: At program point L62-2(line 62) the Hoare annotation is: (let ((.cse0 (<= 1 main_~j~0)) (.cse1 (<= 2 main_~len~0)) (.cse2 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (<= 2 main_~i~0) (<= 1 |main_#t~post12|) .cse1 .cse2) (and .cse0 (= 0 |main_#t~post12|) (<= 1 main_~i~0) .cse2) (and .cse1 (<= main_~len~0 (+ |main_#t~post12| 1)) (<= main_~len~0 main_~i~0) .cse2))) [2020-10-24 02:28:27,445 INFO L270 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse4 (<= 1 main_~i~0)) (.cse2 (= main_~j~0 0)) (.cse1 (< main_~i~0 main_~len~0)) (.cse3 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (= main_~i~0 0) .cse1 .cse2 .cse3) (and .cse0 (<= 1 main_~j~0) .cse4 .cse1 .cse3) (and .cse0 .cse4 .cse2 .cse1 .cse3))) [2020-10-24 02:28:27,445 INFO L270 CegarLoopResult]: At program point L54(line 54) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 2 main_~i~0) (<= 2 main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 |main_#t~post10|) (<= 2 main_~j~0)) [2020-10-24 02:28:27,445 INFO L270 CegarLoopResult]: At program point L54-1(line 54) the Hoare annotation is: (and (<= 2 main_~i~0) (<= 3 main_~j~0) (<= 2 main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 |main_#t~post10|)) [2020-10-24 02:28:27,445 INFO L270 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (and (<= 1 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ |main_#t~post8| 4) main_~bufsize~0) (<= 1 |main_#t~post8|) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-24 02:28:27,445 INFO L270 CegarLoopResult]: At program point L50-1(line 50) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0) (<= (+ |main_#t~post8| 4) main_~bufsize~0) (<= 1 |main_#t~post8|)) [2020-10-24 02:28:27,445 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (<= 1 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-24 02:28:27,446 INFO L270 CegarLoopResult]: At program point L46-1(line 46) the Hoare annotation is: (and (<= 1 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-24 02:28:27,446 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 24 67) the Hoare annotation is: true [2020-10-24 02:28:27,446 INFO L270 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse1 (<= 0 main_~j~0)) (.cse2 (< (+ main_~i~0 1) main_~len~0)) (.cse3 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 (= main_~i~0 0) (= main_~j~0 0) .cse2 .cse3) (and .cse0 .cse1 (<= 1 main_~i~0) .cse2 .cse3))) [2020-10-24 02:28:27,446 INFO L270 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (= main_~j~0 0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~j~0) .cse1 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse4))) [2020-10-24 02:28:27,446 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (<= (+ main_~limit~0 4) main_~bufsize~0) [2020-10-24 02:28:27,446 INFO L270 CegarLoopResult]: At program point L34-3(lines 34 65) the Hoare annotation is: (let ((.cse0 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (let ((.cse1 (<= 1 main_~i~0))) (or (and (= main_~j~0 0) .cse1) (and (<= 1 main_~j~0) .cse1)))) (and (<= 2 main_~i~0) (<= 2 main_~len~0) .cse0) (and (= main_~i~0 0) .cse0))) [2020-10-24 02:28:27,446 INFO L277 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-10-24 02:28:27,446 INFO L277 CegarLoopResult]: At program point L34-4(lines 34 65) the Hoare annotation is: true [2020-10-24 02:28:27,447 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 67) the Hoare annotation is: true [2020-10-24 02:28:27,447 INFO L277 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: true [2020-10-24 02:28:27,447 INFO L277 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: true [2020-10-24 02:28:27,447 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse4 (<= 1 main_~i~0)) (.cse2 (= main_~j~0 0)) (.cse1 (< main_~i~0 main_~len~0)) (.cse3 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 (= main_~i~0 0) .cse1 .cse2 .cse3) (and .cse0 (<= 1 main_~j~0) .cse4 .cse1 .cse3) (and .cse0 .cse4 .cse2 .cse1 .cse3))) [2020-10-24 02:28:27,447 INFO L270 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0)) [2020-10-24 02:28:27,447 INFO L270 CegarLoopResult]: At program point L51-1(line 51) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= 1 |main_#t~post9|) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0)) [2020-10-24 02:28:27,447 INFO L270 CegarLoopResult]: At program point L51-2(line 51) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 2 main_~i~0) (<= 2 main_~len~0) (<= 1 |main_#t~post9|) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= 2 main_~j~0)) [2020-10-24 02:28:27,447 INFO L270 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (and (<= 1 main_~j~0) (<= (+ main_~i~0 1) main_~len~0) (<= 1 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-24 02:28:27,447 INFO L270 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse4 (= main_~j~0 0)) (.cse2 (< (+ main_~i~0 1) main_~len~0)) (.cse3 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and (<= 1 main_~j~0) .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse4 .cse2 .cse3) (and .cse0 (= main_~i~0 0) .cse4 .cse2 .cse3))) [2020-10-24 02:28:27,448 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (= main_~j~0 0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~j~0) .cse1 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse4))) [2020-10-24 02:28:27,448 INFO L270 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (= main_~j~0 0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~j~0) .cse1 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse4))) [2020-10-24 02:28:27,448 INFO L270 CegarLoopResult]: At program point L39-3(line 39) the Hoare annotation is: (let ((.cse1 (<= 1 main_~i~0)) (.cse3 (< (+ main_~i~0 1) main_~len~0)) (.cse0 (<= (+ main_~j~0 5) main_~bufsize~0)) (.cse2 (= main_~j~0 0)) (.cse4 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~j~0) .cse1 .cse3 .cse4) (and .cse0 (<= 2 main_~len~0) (= main_~i~0 0) .cse2 .cse4))) [2020-10-24 02:28:27,448 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (< main_~i~0 main_~len~0)) (.cse1 (<= (+ main_~limit~0 4) main_~bufsize~0))) (or (and (<= 2 main_~i~0) .cse0 .cse1) (and (let ((.cse2 (<= 1 main_~i~0))) (or (and .cse0 .cse2 (= main_~j~0 0)) (and (<= 1 main_~j~0) .cse0 .cse2))) .cse1) (and (= main_~i~0 0) .cse0 .cse1))) [2020-10-24 02:28:27,448 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:28:27,448 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-24 02:28:27,448 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:28:27,448 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:28:27,448 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:28:27,449 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:28:27,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:28:27 BoogieIcfgContainer [2020-10-24 02:28:27,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:28:27,479 INFO L168 Benchmark]: Toolchain (without parser) took 156121.67 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 126.3 MB in the beginning and 685.5 MB in the end (delta: -559.1 MB). Peak memory consumption was 588.3 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:27,479 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:28:27,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.41 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:27,480 INFO L168 Benchmark]: Boogie Preprocessor took 68.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:27,480 INFO L168 Benchmark]: RCFGBuilder took 506.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 128.3 MB in the end (delta: -14.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:27,481 INFO L168 Benchmark]: TraceAbstraction took 155119.51 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 127.8 MB in the beginning and 685.5 MB in the end (delta: -557.7 MB). Peak memory consumption was 589.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:28:27,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 409.41 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 506.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 128.3 MB in the end (delta: -14.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 155119.51 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 127.8 MB in the beginning and 685.5 MB in the end (delta: -557.7 MB). Peak memory consumption was 589.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((j + 5 <= bufsize && 1 <= j) && 2 <= len) && i < len) && len <= i + 1) && limit + 4 <= bufsize) || ((((j + 5 <= bufsize && 1 <= j) && 1 <= i) && i + 1 < len) && limit + 4 <= bufsize)) || ((((j + 5 <= bufsize && j == 0) && i < len) && 0 <= i) && limit + 4 <= bufsize) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((limit + 4 <= bufsize && ((j == 0 && 1 <= i) || (1 <= j && 1 <= i))) || ((2 <= i && 2 <= len) && limit + 4 <= bufsize)) || (i == 0 && limit + 4 <= bufsize) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((1 <= j && 1 <= i) && limit + 4 <= bufsize) || (((i + 1 <= len && j == 0) && 0 <= i) && limit + 4 <= bufsize)) || ((2 <= len && len <= i) && limit + 4 <= bufsize) - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 90.1s, OverallIterations: 45, TraceHistogramMax: 40, AutomataDifference: 74.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 64.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4814 SDtfs, 5570 SDslu, 13652 SDs, 0 SdLazy, 43449 SolverSat, 4780 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2653 GetRequests, 1672 SyntacticMatches, 0 SemanticMatches, 981 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4479 ImplicationChecksByTransitivity, 23.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1813occurred in iteration=43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 45 MinimizatonAttempts, 3026 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 87 LocationsWithAnnotation, 4761 PreInvPairs, 7285 NumberOfFragments, 2278 HoareAnnotationTreeSize, 4761 FomulaSimplifications, 84194618918042 FormulaSimplificationTreeSizeReduction, 21.1s HoareSimplificationTime, 87 FomulaSimplificationsInter, 3410072923 FormulaSimplificationTreeSizeReductionInter, 43.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 6253 NumberOfCodeBlocks, 6253 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 6208 ConstructedInterpolants, 0 QuantifiedInterpolants, 1964506 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 45 InterpolantComputations, 13 PerfectInterpolantSequences, 31810/32299 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...