/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:06:40,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:06:40,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:06:40,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:06:40,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:06:40,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:06:40,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:06:40,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:06:40,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:06:40,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:06:40,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:06:40,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:06:40,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:06:40,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:06:40,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:06:40,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:06:40,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:06:40,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:06:40,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:06:40,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:06:40,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:06:40,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:06:40,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:06:40,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:06:40,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:06:40,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:06:40,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:06:40,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:06:40,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:06:40,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 17:06:40,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:06:40,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:06:40,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:06:40,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:06:40,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:06:40,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:06:40,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:06:40,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:06:40,882 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:06:40,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:06:40,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:06:40,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:06:40,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:06:40,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:06:40,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:06:40,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:06:40,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:06:40,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:06:40,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:06:40,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:06:40,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:06:40,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:06:40,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:06:40,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:06:40,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:06:40,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:06:40,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:06:40,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:06:40,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:06:40,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:06:40,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:06:40,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:06:40,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:06:40,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:06:41,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:06:41,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:06:41,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:06:41,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:06:41,408 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:06:41,410 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-09-24 17:06:41,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ee7ef7cc/c78282cfc1224564b1dc8d6d302ac930/FLAG5268e058e [2020-09-24 17:06:42,108 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:06:42,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_10.c [2020-09-24 17:06:42,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ee7ef7cc/c78282cfc1224564b1dc8d6d302ac930/FLAG5268e058e [2020-09-24 17:06:42,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ee7ef7cc/c78282cfc1224564b1dc8d6d302ac930 [2020-09-24 17:06:42,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:06:42,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:06:42,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:06:42,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:06:42,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:06:42,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18153661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42, skipping insertion in model container [2020-09-24 17:06:42,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:06:42,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:06:42,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:06:42,732 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:06:42,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:06:42,789 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:06:42,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42 WrapperNode [2020-09-24 17:06:42,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:06:42,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:06:42,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:06:42,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:06:42,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (1/1) ... [2020-09-24 17:06:42,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:06:42,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:06:42,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:06:42,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:06:42,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 17:06:43,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:06:43,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:06:43,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:06:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:06:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:06:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:06:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:06:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:06:43,498 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:06:43,498 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:06:43,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:06:43 BoogieIcfgContainer [2020-09-24 17:06:43,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:06:43,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:06:43,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:06:43,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:06:43,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:06:42" (1/3) ... [2020-09-24 17:06:43,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec64e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:06:43, skipping insertion in model container [2020-09-24 17:06:43,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:42" (2/3) ... [2020-09-24 17:06:43,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec64e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:06:43, skipping insertion in model container [2020-09-24 17:06:43,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:06:43" (3/3) ... [2020-09-24 17:06:43,514 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-09-24 17:06:43,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:06:43,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:06:43,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:06:43,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:06:43,597 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:06:43,597 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:06:43,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:06:43,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:06:43,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:06:43,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:06:43,598 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:06:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-09-24 17:06:43,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 17:06:43,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:43,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:43,636 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:43,643 INFO L82 PathProgramCache]: Analyzing trace with hash -74913912, now seen corresponding path program 1 times [2020-09-24 17:06:43,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:43,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213935401] [2020-09-24 17:06:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:44,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 17:06:44,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-24 17:06:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 17:06:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:06:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:44,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,269 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:44,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:44,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:06:44,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:44,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213935401] [2020-09-24 17:06:44,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:44,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:44,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735973906] [2020-09-24 17:06:44,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:44,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:44,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:44,337 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-09-24 17:06:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:44,422 INFO L93 Difference]: Finished difference Result 257 states and 353 transitions. [2020-09-24 17:06:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:44,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-24 17:06:44,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:44,443 INFO L225 Difference]: With dead ends: 257 [2020-09-24 17:06:44,443 INFO L226 Difference]: Without dead ends: 176 [2020-09-24 17:06:44,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-24 17:06:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-09-24 17:06:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 17:06:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2020-09-24 17:06:44,512 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 73 [2020-09-24 17:06:44,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:44,513 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2020-09-24 17:06:44,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:44,513 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2020-09-24 17:06:44,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 17:06:44,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:44,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:44,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:06:44,517 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:44,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash 328701044, now seen corresponding path program 1 times [2020-09-24 17:06:44,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:44,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536813510] [2020-09-24 17:06:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,681 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:44,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:06:44,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 17:06:44,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 17:06:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:44,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:44,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:44,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:44,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:44,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:44,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536813510] [2020-09-24 17:06:44,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:44,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:44,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316312577] [2020-09-24 17:06:44,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:44,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:44,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:44,785 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand 3 states. [2020-09-24 17:06:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:44,855 INFO L93 Difference]: Finished difference Result 211 states and 283 transitions. [2020-09-24 17:06:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:44,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-24 17:06:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:44,864 INFO L225 Difference]: With dead ends: 211 [2020-09-24 17:06:44,864 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 17:06:44,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:44,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 17:06:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2020-09-24 17:06:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 17:06:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2020-09-24 17:06:44,901 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 74 [2020-09-24 17:06:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:44,902 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2020-09-24 17:06:44,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2020-09-24 17:06:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 17:06:44,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:44,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:44,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:06:44,909 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1972879950, now seen corresponding path program 1 times [2020-09-24 17:06:44,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:44,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157411970] [2020-09-24 17:06:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 17:06:45,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 17:06:45,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 17:06:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:45,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,083 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:06:45,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:45,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157411970] [2020-09-24 17:06:45,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:45,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970011120] [2020-09-24 17:06:45,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:45,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:45,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,095 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand 3 states. [2020-09-24 17:06:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,128 INFO L93 Difference]: Finished difference Result 426 states and 589 transitions. [2020-09-24 17:06:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-24 17:06:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,132 INFO L225 Difference]: With dead ends: 426 [2020-09-24 17:06:45,132 INFO L226 Difference]: Without dead ends: 297 [2020-09-24 17:06:45,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-24 17:06:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2020-09-24 17:06:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-24 17:06:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 400 transitions. [2020-09-24 17:06:45,152 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 400 transitions. Word has length 74 [2020-09-24 17:06:45,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:45,153 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 400 transitions. [2020-09-24 17:06:45,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:45,153 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 400 transitions. [2020-09-24 17:06:45,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 17:06:45,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:45,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:45,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:06:45,156 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:45,157 INFO L82 PathProgramCache]: Analyzing trace with hash -618815907, now seen corresponding path program 1 times [2020-09-24 17:06:45,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:45,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951678652] [2020-09-24 17:06:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 17:06:45,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 17:06:45,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 17:06:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,270 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:45,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:45,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951678652] [2020-09-24 17:06:45,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:45,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384668151] [2020-09-24 17:06:45,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:45,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:45,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,280 INFO L87 Difference]: Start difference. First operand 295 states and 400 transitions. Second operand 3 states. [2020-09-24 17:06:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,298 INFO L93 Difference]: Finished difference Result 361 states and 496 transitions. [2020-09-24 17:06:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-24 17:06:45,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,301 INFO L225 Difference]: With dead ends: 361 [2020-09-24 17:06:45,302 INFO L226 Difference]: Without dead ends: 359 [2020-09-24 17:06:45,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-09-24 17:06:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 295. [2020-09-24 17:06:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-24 17:06:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 398 transitions. [2020-09-24 17:06:45,317 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 398 transitions. Word has length 75 [2020-09-24 17:06:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:45,318 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 398 transitions. [2020-09-24 17:06:45,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:45,318 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 398 transitions. [2020-09-24 17:06:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 17:06:45,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:45,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:45,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:06:45,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:45,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1029980604, now seen corresponding path program 1 times [2020-09-24 17:06:45,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:45,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412689836] [2020-09-24 17:06:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 17:06:45,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 17:06:45,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:45,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 17:06:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:45,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:45,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:45,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412689836] [2020-09-24 17:06:45,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:45,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742732583] [2020-09-24 17:06:45,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:45,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:45,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,487 INFO L87 Difference]: Start difference. First operand 295 states and 398 transitions. Second operand 3 states. [2020-09-24 17:06:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,522 INFO L93 Difference]: Finished difference Result 783 states and 1088 transitions. [2020-09-24 17:06:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-24 17:06:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,527 INFO L225 Difference]: With dead ends: 783 [2020-09-24 17:06:45,527 INFO L226 Difference]: Without dead ends: 533 [2020-09-24 17:06:45,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-09-24 17:06:45,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 531. [2020-09-24 17:06:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-24 17:06:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 726 transitions. [2020-09-24 17:06:45,561 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 726 transitions. Word has length 75 [2020-09-24 17:06:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:45,564 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 726 transitions. [2020-09-24 17:06:45,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 726 transitions. [2020-09-24 17:06:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 17:06:45,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:45,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:45,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:06:45,574 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash 72930056, now seen corresponding path program 1 times [2020-09-24 17:06:45,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:45,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163761804] [2020-09-24 17:06:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,668 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:06:45,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:06:45,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-24 17:06:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,712 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:45,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:45,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163761804] [2020-09-24 17:06:45,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:45,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145356651] [2020-09-24 17:06:45,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:45,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:45,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,728 INFO L87 Difference]: Start difference. First operand 531 states and 726 transitions. Second operand 3 states. [2020-09-24 17:06:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,757 INFO L93 Difference]: Finished difference Result 651 states and 900 transitions. [2020-09-24 17:06:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-24 17:06:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,764 INFO L225 Difference]: With dead ends: 651 [2020-09-24 17:06:45,764 INFO L226 Difference]: Without dead ends: 649 [2020-09-24 17:06:45,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-09-24 17:06:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 531. [2020-09-24 17:06:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-24 17:06:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 722 transitions. [2020-09-24 17:06:45,807 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 722 transitions. Word has length 76 [2020-09-24 17:06:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:45,808 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 722 transitions. [2020-09-24 17:06:45,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 722 transitions. [2020-09-24 17:06:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 17:06:45,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:45,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:45,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:06:45,812 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:45,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1864872322, now seen corresponding path program 1 times [2020-09-24 17:06:45,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:45,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27139193] [2020-09-24 17:06:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,900 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:06:45,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 17:06:45,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:45,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-24 17:06:45,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,926 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:06:45,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 17:06:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:45,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27139193] [2020-09-24 17:06:45,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:45,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970014017] [2020-09-24 17:06:45,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:45,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:45,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,946 INFO L87 Difference]: Start difference. First operand 531 states and 722 transitions. Second operand 3 states. [2020-09-24 17:06:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,974 INFO L93 Difference]: Finished difference Result 1479 states and 2044 transitions. [2020-09-24 17:06:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-24 17:06:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,980 INFO L225 Difference]: With dead ends: 1479 [2020-09-24 17:06:45,981 INFO L226 Difference]: Without dead ends: 993 [2020-09-24 17:06:45,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-09-24 17:06:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2020-09-24 17:06:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-09-24 17:06:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1350 transitions. [2020-09-24 17:06:46,008 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1350 transitions. Word has length 76 [2020-09-24 17:06:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,009 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1350 transitions. [2020-09-24 17:06:46,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1350 transitions. [2020-09-24 17:06:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 17:06:46,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:06:46,011 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1976712176, now seen corresponding path program 1 times [2020-09-24 17:06:46,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451314169] [2020-09-24 17:06:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,078 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 17:06:46,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 17:06:46,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-24 17:06:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:46,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:46,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:46,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451314169] [2020-09-24 17:06:46,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514186031] [2020-09-24 17:06:46,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,109 INFO L87 Difference]: Start difference. First operand 991 states and 1350 transitions. Second operand 3 states. [2020-09-24 17:06:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,147 INFO L93 Difference]: Finished difference Result 2835 states and 3896 transitions. [2020-09-24 17:06:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-24 17:06:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,157 INFO L225 Difference]: With dead ends: 2835 [2020-09-24 17:06:46,157 INFO L226 Difference]: Without dead ends: 1889 [2020-09-24 17:06:46,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-24 17:06:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2020-09-24 17:06:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-24 17:06:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2558 transitions. [2020-09-24 17:06:46,204 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2558 transitions. Word has length 77 [2020-09-24 17:06:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,204 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2558 transitions. [2020-09-24 17:06:46,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2558 transitions. [2020-09-24 17:06:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 17:06:46,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:06:46,207 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,208 INFO L82 PathProgramCache]: Analyzing trace with hash 42218801, now seen corresponding path program 1 times [2020-09-24 17:06:46,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559868380] [2020-09-24 17:06:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 17:06:46,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 17:06:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-24 17:06:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,297 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:46,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:46,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559868380] [2020-09-24 17:06:46,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836768750] [2020-09-24 17:06:46,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,305 INFO L87 Difference]: Start difference. First operand 1887 states and 2558 transitions. Second operand 3 states. [2020-09-24 17:06:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,335 INFO L93 Difference]: Finished difference Result 2307 states and 3152 transitions. [2020-09-24 17:06:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-24 17:06:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,346 INFO L225 Difference]: With dead ends: 2307 [2020-09-24 17:06:46,346 INFO L226 Difference]: Without dead ends: 2305 [2020-09-24 17:06:46,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2020-09-24 17:06:46,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 1887. [2020-09-24 17:06:46,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-24 17:06:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2542 transitions. [2020-09-24 17:06:46,393 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2542 transitions. Word has length 77 [2020-09-24 17:06:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,393 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2542 transitions. [2020-09-24 17:06:46,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2542 transitions. [2020-09-24 17:06:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 17:06:46,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:06:46,396 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,396 INFO L82 PathProgramCache]: Analyzing trace with hash -909829732, now seen corresponding path program 1 times [2020-09-24 17:06:46,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441069767] [2020-09-24 17:06:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,494 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:06:46,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 17:06:46,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-24 17:06:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,519 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:46,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:46,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441069767] [2020-09-24 17:06:46,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364776815] [2020-09-24 17:06:46,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,529 INFO L87 Difference]: Start difference. First operand 1887 states and 2542 transitions. Second operand 3 states. [2020-09-24 17:06:46,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,562 INFO L93 Difference]: Finished difference Result 2291 states and 3104 transitions. [2020-09-24 17:06:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-24 17:06:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,573 INFO L225 Difference]: With dead ends: 2291 [2020-09-24 17:06:46,574 INFO L226 Difference]: Without dead ends: 2289 [2020-09-24 17:06:46,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-24 17:06:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1887. [2020-09-24 17:06:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-24 17:06:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2526 transitions. [2020-09-24 17:06:46,652 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2526 transitions. Word has length 78 [2020-09-24 17:06:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,653 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2526 transitions. [2020-09-24 17:06:46,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2526 transitions. [2020-09-24 17:06:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 17:06:46,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:06:46,657 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1148780726, now seen corresponding path program 1 times [2020-09-24 17:06:46,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64435148] [2020-09-24 17:06:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:06:46,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 17:06:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-24 17:06:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:06:46,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:46,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64435148] [2020-09-24 17:06:46,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543289010] [2020-09-24 17:06:46,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,821 INFO L87 Difference]: Start difference. First operand 1887 states and 2526 transitions. Second operand 3 states. [2020-09-24 17:06:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,880 INFO L93 Difference]: Finished difference Result 5475 states and 7360 transitions. [2020-09-24 17:06:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-24 17:06:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,900 INFO L225 Difference]: With dead ends: 5475 [2020-09-24 17:06:46,900 INFO L226 Difference]: Without dead ends: 3633 [2020-09-24 17:06:46,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2020-09-24 17:06:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3631. [2020-09-24 17:06:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-09-24 17:06:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4814 transitions. [2020-09-24 17:06:47,005 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4814 transitions. Word has length 78 [2020-09-24 17:06:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:47,005 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4814 transitions. [2020-09-24 17:06:47,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4814 transitions. [2020-09-24 17:06:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:06:47,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:47,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:47,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:06:47,009 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:47,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1252709924, now seen corresponding path program 1 times [2020-09-24 17:06:47,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:47,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87005678] [2020-09-24 17:06:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,081 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:06:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 17:06:47,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 17:06:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:47,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:47,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:47,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87005678] [2020-09-24 17:06:47,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:47,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:47,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536884922] [2020-09-24 17:06:47,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:47,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:47,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:47,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:47,145 INFO L87 Difference]: Start difference. First operand 3631 states and 4814 transitions. Second operand 3 states. [2020-09-24 17:06:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:47,216 INFO L93 Difference]: Finished difference Result 10611 states and 14096 transitions. [2020-09-24 17:06:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:47,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-24 17:06:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:47,248 INFO L225 Difference]: With dead ends: 10611 [2020-09-24 17:06:47,249 INFO L226 Difference]: Without dead ends: 7025 [2020-09-24 17:06:47,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2020-09-24 17:06:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7023. [2020-09-24 17:06:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-24 17:06:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9198 transitions. [2020-09-24 17:06:47,429 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9198 transitions. Word has length 79 [2020-09-24 17:06:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:47,429 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9198 transitions. [2020-09-24 17:06:47,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9198 transitions. [2020-09-24 17:06:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:06:47,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:47,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:47,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:06:47,435 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:47,435 INFO L82 PathProgramCache]: Analyzing trace with hash -358562811, now seen corresponding path program 1 times [2020-09-24 17:06:47,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:47,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136551887] [2020-09-24 17:06:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:06:47,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 17:06:47,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 17:06:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:47,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:47,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:47,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:06:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:47,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136551887] [2020-09-24 17:06:47,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:47,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:47,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517879090] [2020-09-24 17:06:47,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:47,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:47,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:47,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:47,549 INFO L87 Difference]: Start difference. First operand 7023 states and 9198 transitions. Second operand 3 states. [2020-09-24 17:06:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:47,635 INFO L93 Difference]: Finished difference Result 8435 states and 11056 transitions. [2020-09-24 17:06:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:47,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-24 17:06:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:47,694 INFO L225 Difference]: With dead ends: 8435 [2020-09-24 17:06:47,694 INFO L226 Difference]: Without dead ends: 8433 [2020-09-24 17:06:47,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2020-09-24 17:06:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 7023. [2020-09-24 17:06:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-24 17:06:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9134 transitions. [2020-09-24 17:06:47,950 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9134 transitions. Word has length 79 [2020-09-24 17:06:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:47,951 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9134 transitions. [2020-09-24 17:06:47,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9134 transitions. [2020-09-24 17:06:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 17:06:47,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:47,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:47,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:06:47,961 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:47,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:47,961 INFO L82 PathProgramCache]: Analyzing trace with hash -449157072, now seen corresponding path program 1 times [2020-09-24 17:06:47,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:47,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130064375] [2020-09-24 17:06:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,030 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 17:06:48,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 17:06:48,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 17:06:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:48,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,058 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:48,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:48,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:48,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130064375] [2020-09-24 17:06:48,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:48,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:48,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098065951] [2020-09-24 17:06:48,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:48,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:48,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:48,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:48,067 INFO L87 Difference]: Start difference. First operand 7023 states and 9134 transitions. Second operand 3 states. [2020-09-24 17:06:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:48,132 INFO L93 Difference]: Finished difference Result 8371 states and 10864 transitions. [2020-09-24 17:06:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:48,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-24 17:06:48,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:48,152 INFO L225 Difference]: With dead ends: 8371 [2020-09-24 17:06:48,152 INFO L226 Difference]: Without dead ends: 8369 [2020-09-24 17:06:48,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2020-09-24 17:06:48,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 7023. [2020-09-24 17:06:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-24 17:06:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9070 transitions. [2020-09-24 17:06:48,302 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9070 transitions. Word has length 80 [2020-09-24 17:06:48,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:48,302 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9070 transitions. [2020-09-24 17:06:48,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9070 transitions. [2020-09-24 17:06:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 17:06:48,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:48,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:48,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:06:48,308 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash 179548138, now seen corresponding path program 1 times [2020-09-24 17:06:48,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:48,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889910864] [2020-09-24 17:06:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 17:06:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 17:06:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 17:06:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:48,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:48,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889910864] [2020-09-24 17:06:48,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:48,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:48,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858224447] [2020-09-24 17:06:48,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:48,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:48,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:48,405 INFO L87 Difference]: Start difference. First operand 7023 states and 9070 transitions. Second operand 3 states. [2020-09-24 17:06:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:48,519 INFO L93 Difference]: Finished difference Result 20595 states and 26608 transitions. [2020-09-24 17:06:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:48,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-24 17:06:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:48,637 INFO L225 Difference]: With dead ends: 20595 [2020-09-24 17:06:48,637 INFO L226 Difference]: Without dead ends: 13617 [2020-09-24 17:06:48,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13617 states. [2020-09-24 17:06:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13617 to 13615. [2020-09-24 17:06:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-24 17:06:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17326 transitions. [2020-09-24 17:06:48,970 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17326 transitions. Word has length 80 [2020-09-24 17:06:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:48,971 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17326 transitions. [2020-09-24 17:06:48,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17326 transitions. [2020-09-24 17:06:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 17:06:48,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:48,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:48,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 17:06:48,984 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:48,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:48,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1037388505, now seen corresponding path program 1 times [2020-09-24 17:06:48,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:48,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217688482] [2020-09-24 17:06:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 17:06:49,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 17:06:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-24 17:06:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:49,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:49,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:49,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:49,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:49,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217688482] [2020-09-24 17:06:49,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:49,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:49,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697863823] [2020-09-24 17:06:49,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:49,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:49,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:49,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:49,117 INFO L87 Difference]: Start difference. First operand 13615 states and 17326 transitions. Second operand 3 states. [2020-09-24 17:06:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:49,275 INFO L93 Difference]: Finished difference Result 16051 states and 20272 transitions. [2020-09-24 17:06:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:49,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-24 17:06:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:49,323 INFO L225 Difference]: With dead ends: 16051 [2020-09-24 17:06:49,323 INFO L226 Difference]: Without dead ends: 16049 [2020-09-24 17:06:49,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16049 states. [2020-09-24 17:06:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16049 to 13615. [2020-09-24 17:06:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-24 17:06:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17198 transitions. [2020-09-24 17:06:49,952 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17198 transitions. Word has length 81 [2020-09-24 17:06:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:49,953 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17198 transitions. [2020-09-24 17:06:49,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17198 transitions. [2020-09-24 17:06:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 17:06:49,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:49,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:49,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 17:06:49,975 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:49,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:49,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1271271512, now seen corresponding path program 1 times [2020-09-24 17:06:49,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:49,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933887146] [2020-09-24 17:06:49,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:50,058 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:50,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 17:06:50,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:50,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 17:06:50,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-24 17:06:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:50,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:50,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:50,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:50,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:50,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:50,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:50,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933887146] [2020-09-24 17:06:50,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:50,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:50,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531502714] [2020-09-24 17:06:50,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:50,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:50,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:50,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:50,091 INFO L87 Difference]: Start difference. First operand 13615 states and 17198 transitions. Second operand 3 states. [2020-09-24 17:06:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:50,305 INFO L93 Difference]: Finished difference Result 39987 states and 50480 transitions. [2020-09-24 17:06:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:50,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-24 17:06:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:50,362 INFO L225 Difference]: With dead ends: 39987 [2020-09-24 17:06:50,363 INFO L226 Difference]: Without dead ends: 26417 [2020-09-24 17:06:50,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26417 states. [2020-09-24 17:06:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26417 to 26415. [2020-09-24 17:06:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-24 17:06:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32814 transitions. [2020-09-24 17:06:51,486 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32814 transitions. Word has length 81 [2020-09-24 17:06:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:51,486 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32814 transitions. [2020-09-24 17:06:51,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32814 transitions. [2020-09-24 17:06:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 17:06:51,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:51,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:51,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 17:06:51,508 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:51,509 INFO L82 PathProgramCache]: Analyzing trace with hash -124338492, now seen corresponding path program 1 times [2020-09-24 17:06:51,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:51,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248283740] [2020-09-24 17:06:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:51,598 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:51,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:06:51,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 17:06:51,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-24 17:06:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:51,627 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:51,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:51,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:51,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:51,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248283740] [2020-09-24 17:06:51,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:51,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:51,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659441179] [2020-09-24 17:06:51,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:51,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:51,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:51,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:51,649 INFO L87 Difference]: Start difference. First operand 26415 states and 32814 transitions. Second operand 3 states. [2020-09-24 17:06:51,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:51,902 INFO L93 Difference]: Finished difference Result 30771 states and 37680 transitions. [2020-09-24 17:06:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:51,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-24 17:06:51,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:51,972 INFO L225 Difference]: With dead ends: 30771 [2020-09-24 17:06:51,972 INFO L226 Difference]: Without dead ends: 30769 [2020-09-24 17:06:51,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30769 states. [2020-09-24 17:06:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30769 to 26415. [2020-09-24 17:06:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-24 17:06:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32558 transitions. [2020-09-24 17:06:52,608 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32558 transitions. Word has length 82 [2020-09-24 17:06:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:52,608 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32558 transitions. [2020-09-24 17:06:52,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32558 transitions. [2020-09-24 17:06:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 17:06:52,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:52,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:52,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 17:06:52,624 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash 754958110, now seen corresponding path program 1 times [2020-09-24 17:06:52,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:52,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94292220] [2020-09-24 17:06:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:52,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:52,692 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:52,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:06:52,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:52,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 17:06:52,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-24 17:06:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:06:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:52,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:52,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94292220] [2020-09-24 17:06:52,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:52,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:52,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204886047] [2020-09-24 17:06:52,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:52,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:52,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:52,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:52,723 INFO L87 Difference]: Start difference. First operand 26415 states and 32558 transitions. Second operand 3 states. [2020-09-24 17:06:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:53,506 INFO L93 Difference]: Finished difference Result 77617 states and 95535 transitions. [2020-09-24 17:06:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:53,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-24 17:06:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:53,581 INFO L225 Difference]: With dead ends: 77617 [2020-09-24 17:06:53,582 INFO L226 Difference]: Without dead ends: 26415 [2020-09-24 17:06:53,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:53,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26415 states. [2020-09-24 17:06:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26415 to 26415. [2020-09-24 17:06:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-24 17:06:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 31534 transitions. [2020-09-24 17:06:54,111 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 31534 transitions. Word has length 82 [2020-09-24 17:06:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:54,111 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 31534 transitions. [2020-09-24 17:06:54,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 31534 transitions. [2020-09-24 17:06:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 17:06:54,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:54,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:54,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 17:06:54,128 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:54,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1778136659, now seen corresponding path program 1 times [2020-09-24 17:06:54,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:54,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716500303] [2020-09-24 17:06:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:54,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:54,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 17:06:54,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 17:06:54,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 17:06:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:54,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:54,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:54,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:54,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:54,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:54,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:54,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716500303] [2020-09-24 17:06:54,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:54,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:54,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526820521] [2020-09-24 17:06:54,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:54,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:54,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:54,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:54,234 INFO L87 Difference]: Start difference. First operand 26415 states and 31534 transitions. Second operand 3 states. [2020-09-24 17:06:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:54,372 INFO L93 Difference]: Finished difference Result 26415 states and 31534 transitions. [2020-09-24 17:06:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:54,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-24 17:06:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:54,373 INFO L225 Difference]: With dead ends: 26415 [2020-09-24 17:06:54,374 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:06:54,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:06:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:06:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:06:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:06:54,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-09-24 17:06:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:54,402 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:06:54,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:06:54,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:06:54,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 17:06:54,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:06:54,444 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 17:06:54,445 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:06:54,445 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:06:54,445 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:06:54,445 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:06:54,445 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:06:54,445 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 163) no Hoare annotation was computed. [2020-09-24 17:06:54,446 INFO L268 CegarLoopResult]: For program point L118-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,447 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 17:06:54,447 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 17:06:54,447 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-24 17:06:54,447 INFO L268 CegarLoopResult]: For program point L102-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,447 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-09-24 17:06:54,447 INFO L268 CegarLoopResult]: For program point L86-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,448 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-24 17:06:54,448 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 17:06:54,448 INFO L268 CegarLoopResult]: For program point L70-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,448 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-24 17:06:54,448 INFO L271 CegarLoopResult]: At program point L153-1(lines 39 158) the Hoare annotation is: true [2020-09-24 17:06:54,448 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-24 17:06:54,449 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-24 17:06:54,449 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 17:06:54,449 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 17:06:54,449 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 17:06:54,449 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 163) no Hoare annotation was computed. [2020-09-24 17:06:54,450 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-09-24 17:06:54,450 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-24 17:06:54,450 INFO L264 CegarLoopResult]: At program point L154-1(lines 5 163) the Hoare annotation is: false [2020-09-24 17:06:54,450 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 17:06:54,450 INFO L268 CegarLoopResult]: For program point L138-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,450 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 17:06:54,451 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 17:06:54,451 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-09-24 17:06:54,451 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-24 17:06:54,451 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-24 17:06:54,451 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 17:06:54,452 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 17:06:54,452 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-24 17:06:54,452 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-24 17:06:54,452 INFO L268 CegarLoopResult]: For program point L123-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,452 INFO L268 CegarLoopResult]: For program point L90-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,452 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 17:06:54,453 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 17:06:54,453 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 17:06:54,453 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-24 17:06:54,453 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-24 17:06:54,453 INFO L268 CegarLoopResult]: For program point L74-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,453 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-09-24 17:06:54,454 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-09-24 17:06:54,454 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-24 17:06:54,454 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 17:06:54,455 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-24 17:06:54,455 INFO L268 CegarLoopResult]: For program point L108-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,455 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 17:06:54,455 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 17:06:54,456 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 17:06:54,456 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-24 17:06:54,457 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-09-24 17:06:54,458 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 17:06:54,458 INFO L271 CegarLoopResult]: At program point L159(lines 5 163) the Hoare annotation is: true [2020-09-24 17:06:54,458 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-24 17:06:54,458 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 17:06:54,458 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 17:06:54,458 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 17:06:54,459 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-24 17:06:54,459 INFO L268 CegarLoopResult]: For program point L143-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,459 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-24 17:06:54,459 INFO L268 CegarLoopResult]: For program point L94-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,459 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 17:06:54,459 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-24 17:06:54,459 INFO L268 CegarLoopResult]: For program point L78-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,459 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 17:06:54,460 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 17:06:54,460 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 17:06:54,460 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-09-24 17:06:54,460 INFO L268 CegarLoopResult]: For program point L128-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,460 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-24 17:06:54,460 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-09-24 17:06:54,460 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-24 17:06:54,460 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 17:06:54,461 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 17:06:54,461 INFO L268 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-09-24 17:06:54,461 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-09-24 17:06:54,461 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2020-09-24 17:06:54,461 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 17:06:54,461 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 163) the Hoare annotation is: true [2020-09-24 17:06:54,461 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 17:06:54,462 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 17:06:54,462 INFO L268 CegarLoopResult]: For program point L113-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,462 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-24 17:06:54,462 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 17:06:54,462 INFO L268 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-09-24 17:06:54,462 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-24 17:06:54,462 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 17:06:54,464 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 17:06:54,464 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 17:06:54,464 INFO L268 CegarLoopResult]: For program point L98-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,465 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-24 17:06:54,465 INFO L268 CegarLoopResult]: For program point L148-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,465 INFO L268 CegarLoopResult]: For program point L82-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,465 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 17:06:54,465 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-24 17:06:54,466 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-09-24 17:06:54,466 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 17:06:54,466 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 17:06:54,467 INFO L268 CegarLoopResult]: For program point L66-2(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,467 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 17:06:54,467 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-24 17:06:54,468 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-24 17:06:54,468 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-24 17:06:54,468 INFO L268 CegarLoopResult]: For program point L133-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 17:06:54,468 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-24 17:06:54,468 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 17:06:54,469 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-09-24 17:06:54,469 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 17:06:54,469 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 17:06:54,469 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 17:06:54,470 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-24 17:06:54,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:06:54 BoogieIcfgContainer [2020-09-24 17:06:54,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:06:54,493 INFO L168 Benchmark]: Toolchain (without parser) took 12052.66 ms. Allocated memory was 138.4 MB in the beginning and 688.4 MB in the end (delta: 550.0 MB). Free memory was 102.2 MB in the beginning and 117.7 MB in the end (delta: -15.5 MB). Peak memory consumption was 534.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:54,499 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:06:54,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.08 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 90.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:54,503 INFO L168 Benchmark]: Boogie Preprocessor took 133.69 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.9 MB in the beginning and 178.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:54,504 INFO L168 Benchmark]: RCFGBuilder took 579.84 ms. Allocated memory is still 200.8 MB. Free memory was 178.7 MB in the beginning and 154.2 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:54,505 INFO L168 Benchmark]: TraceAbstraction took 10982.98 ms. Allocated memory was 200.8 MB in the beginning and 688.4 MB in the end (delta: 487.6 MB). Free memory was 153.6 MB in the beginning and 117.7 MB in the end (delta: 35.9 MB). Peak memory consumption was 523.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:54,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.08 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 90.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.69 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.9 MB in the beginning and 178.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 579.84 ms. Allocated memory is still 200.8 MB. Free memory was 178.7 MB in the beginning and 154.2 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10982.98 ms. Allocated memory was 200.8 MB in the beginning and 688.4 MB in the end (delta: 487.6 MB). Free memory was 153.6 MB in the beginning and 117.7 MB in the end (delta: 35.9 MB). Peak memory consumption was 523.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 161]: 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: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.8s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3610 SDtfs, 1318 SDslu, 2579 SDs, 0 SdLazy, 99 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26415occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 10599 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 1033 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1560 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1540 ConstructedInterpolants, 0 QuantifiedInterpolants, 151100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 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...