/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:26:00,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:26:00,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:26:00,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:26:00,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:26:00,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:26:00,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:26:00,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:26:00,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:26:00,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:26:00,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:26:00,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:26:00,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:26:00,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:26:00,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:26:00,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:26:00,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:26:00,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:26:00,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:26:00,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:26:00,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:26:00,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:26:00,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:26:00,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:26:00,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:26:00,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:26:00,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:26:00,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:26:00,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:26:00,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:26:00,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:26:00,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:26:00,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:26:00,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:26:00,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:26:00,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:26:00,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:26:00,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:26:00,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:26:00,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:26:00,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:26:00,847 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 20:26:00,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:26:00,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:26:00,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:26:00,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:26:00,896 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:26:00,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:26:00,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:26:00,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:26:00,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:26:00,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:26:00,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:26:00,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:26:00,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:26:00,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:26:00,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:26:00,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:26:00,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:26:00,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:26:00,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:26:00,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:26:00,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:26:00,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:26:00,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:26:00,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:26:00,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:26:00,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:26:00,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:26:00,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:26:00,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:26:00,903 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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:26:01,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:26:01,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:26:01,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:26:01,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:26:01,388 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:26:01,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-09-24 20:26:01,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac7605c90/3c4a87df94eb4dec980d31dc47e9be84/FLAG31e659368 [2020-09-24 20:26:01,969 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:26:01,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-09-24 20:26:01,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac7605c90/3c4a87df94eb4dec980d31dc47e9be84/FLAG31e659368 [2020-09-24 20:26:02,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac7605c90/3c4a87df94eb4dec980d31dc47e9be84 [2020-09-24 20:26:02,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:26:02,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:26:02,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:26:02,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:26:02,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:26:02,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02, skipping insertion in model container [2020-09-24 20:26:02,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:26:02,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:26:02,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:26:02,607 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:26:02,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:26:02,645 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:26:02,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02 WrapperNode [2020-09-24 20:26:02,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:26:02,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:26:02,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:26:02,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:26:02,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (1/1) ... [2020-09-24 20:26:02,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:26:02,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:26:02,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:26:02,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:26:02,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (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 20:26:02,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:26:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:26:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 20:26:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:26:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:26:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:26:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 20:26:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:26:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:26:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:26:03,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:26:03,036 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:26:03,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:26:03 BoogieIcfgContainer [2020-09-24 20:26:03,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:26:03,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:26:03,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:26:03,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:26:03,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:26:02" (1/3) ... [2020-09-24 20:26:03,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d6eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:26:03, skipping insertion in model container [2020-09-24 20:26:03,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:02" (2/3) ... [2020-09-24 20:26:03,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d6eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:26:03, skipping insertion in model container [2020-09-24 20:26:03,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:26:03" (3/3) ... [2020-09-24 20:26:03,051 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-09-24 20:26:03,064 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:26:03,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:26:03,103 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:26:03,139 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:26:03,140 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:26:03,140 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:26:03,140 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:26:03,141 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:26:03,141 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:26:03,141 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:26:03,141 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:26:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-24 20:26:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 20:26:03,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:03,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:03,177 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:03,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:03,186 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-09-24 20:26:03,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:03,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638613868] [2020-09-24 20:26:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:26:03,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:03,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 20:26:03,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:26:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:26:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:03,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:03,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:26:03,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:03,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:26:03,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:03,527 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 20:26:03,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638613868] [2020-09-24 20:26:03,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:26:03,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:26:03,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480531253] [2020-09-24 20:26:03,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:26:03,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:03,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:26:03,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:26:03,552 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-24 20:26:03,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:03,647 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-09-24 20:26:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:26:03,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 20:26:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:03,661 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:26:03,662 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:26:03,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:26:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:26:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:26:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:26:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-24 20:26:03,716 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-09-24 20:26:03,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:03,717 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-24 20:26:03,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:26:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-24 20:26:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 20:26:03,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:03,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:03,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:26:03,720 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:03,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:03,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-09-24 20:26:03,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:03,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860722189] [2020-09-24 20:26:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:26:04,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-24 20:26:04,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 20:26:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:26:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:04,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:04,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:04,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:04,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:04,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:04,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:04,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-24 20:26:04,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:26:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:04,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:26:04,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-24 20:26:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:26:04,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860722189] [2020-09-24 20:26:04,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:26:04,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:26:04,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126074859] [2020-09-24 20:26:04,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:26:04,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:04,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:26:04,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:26:04,604 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2020-09-24 20:26:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:04,659 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-09-24 20:26:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:26:04,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-24 20:26:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:04,661 INFO L225 Difference]: With dead ends: 49 [2020-09-24 20:26:04,661 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 20:26:04,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:26:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 20:26:04,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-09-24 20:26:04,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 20:26:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-24 20:26:04,670 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2020-09-24 20:26:04,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:04,671 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-24 20:26:04,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:26:04,671 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-24 20:26:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 20:26:04,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:04,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:04,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:26:04,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:04,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:04,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times [2020-09-24 20:26:04,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:04,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561057854] [2020-09-24 20:26:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:26:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 20:26:04,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:26:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:26:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:04,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:04,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:04,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 20:26:04,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:05,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:05,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:05,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:26:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:26:05,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561057854] [2020-09-24 20:26:05,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:05,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:26:05,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730764303] [2020-09-24 20:26:05,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:26:05,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:05,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:26:05,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:26:05,076 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2020-09-24 20:26:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:05,167 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-24 20:26:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:26:05,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-24 20:26:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:05,169 INFO L225 Difference]: With dead ends: 41 [2020-09-24 20:26:05,169 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 20:26:05,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 20:26:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-24 20:26:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 20:26:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-09-24 20:26:05,177 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-09-24 20:26:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:05,177 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-09-24 20:26:05,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:26:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-09-24 20:26:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 20:26:05,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:05,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:05,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:26:05,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:05,180 INFO L82 PathProgramCache]: Analyzing trace with hash 170302224, now seen corresponding path program 1 times [2020-09-24 20:26:05,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:05,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809036365] [2020-09-24 20:26:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-24 20:26:05,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:26:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:26:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:05,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:05,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:05,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:05,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:05,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 20:26:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:26:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:26:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:05,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:05,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:05,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 20:26:05,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:06,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:26:06,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:06,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:26:06,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809036365] [2020-09-24 20:26:06,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:06,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:26:06,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432776071] [2020-09-24 20:26:06,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:26:06,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:06,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:26:06,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:26:06,055 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2020-09-24 20:26:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:06,123 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-09-24 20:26:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:26:06,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-24 20:26:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:06,125 INFO L225 Difference]: With dead ends: 56 [2020-09-24 20:26:06,125 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:26:06,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:26:06,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-24 20:26:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 20:26:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-24 20:26:06,133 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 38 [2020-09-24 20:26:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:06,134 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-24 20:26:06,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:26:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-24 20:26:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 20:26:06,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:06,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:06,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:26:06,136 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times [2020-09-24 20:26:06,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:06,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284219918] [2020-09-24 20:26:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:06,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:26:06,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-09-24 20:26:06,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:26:06,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:26:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:06,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:06,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:07,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:26:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-09-24 20:26:07,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:07,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:07,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:07,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:07,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:07,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 20:26:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:07,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:07,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:26:07,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:07,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:07,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:26:07,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284219918] [2020-09-24 20:26:07,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:07,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:26:07,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570929410] [2020-09-24 20:26:07,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:26:07,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:07,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:26:07,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:07,423 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-09-24 20:26:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:07,560 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-09-24 20:26:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:26:07,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-24 20:26:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:07,562 INFO L225 Difference]: With dead ends: 48 [2020-09-24 20:26:07,562 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:26:07,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:26:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:26:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 20:26:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 20:26:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-24 20:26:07,573 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 38 [2020-09-24 20:26:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:07,574 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-24 20:26:07,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:26:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-24 20:26:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:26:07,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:07,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:07,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:26:07,580 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash -915726529, now seen corresponding path program 2 times [2020-09-24 20:26:07,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:07,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426431127] [2020-09-24 20:26:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:08,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 20:26:08,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-09-24 20:26:08,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 20:26:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:26:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:08,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:08,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:08,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:08,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:08,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:08,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 20:26:08,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:26:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:26:08,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:08,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:08,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:08,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 20:26:08,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:08,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:08,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:08,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:09,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 20:26:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:09,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:09,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:09,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:09,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:26:09,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:09,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:26:09,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426431127] [2020-09-24 20:26:09,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:09,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:26:09,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796181747] [2020-09-24 20:26:09,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:26:09,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:09,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:26:09,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:09,095 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 11 states. [2020-09-24 20:26:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:09,203 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-09-24 20:26:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:26:09,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-24 20:26:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:09,206 INFO L225 Difference]: With dead ends: 63 [2020-09-24 20:26:09,206 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 20:26:09,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:26:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 20:26:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-09-24 20:26:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 20:26:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-09-24 20:26:09,218 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 48 [2020-09-24 20:26:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:09,219 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-09-24 20:26:09,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:26:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-09-24 20:26:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:26:09,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:09,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:09,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:26:09,223 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:09,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1045014785, now seen corresponding path program 3 times [2020-09-24 20:26:09,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:09,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292532967] [2020-09-24 20:26:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 20:26:10,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:26:10,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-09-24 20:26:10,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 20:26:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:10,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:10,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-24 20:26:10,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 20:26:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:10,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:10,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:26:10,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:10,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:10,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:26:10,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:10,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:26:10,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292532967] [2020-09-24 20:26:10,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:10,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:26:10,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782742895] [2020-09-24 20:26:10,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:26:10,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:10,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:26:10,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:26:10,959 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 14 states. [2020-09-24 20:26:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:11,128 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-09-24 20:26:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:26:11,129 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-09-24 20:26:11,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:11,130 INFO L225 Difference]: With dead ends: 55 [2020-09-24 20:26:11,130 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 20:26:11,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 20:26:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 20:26:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 20:26:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-09-24 20:26:11,141 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 48 [2020-09-24 20:26:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:11,143 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-09-24 20:26:11,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:26:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-09-24 20:26:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:26:11,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:11,145 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:11,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:26:11,146 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash 615088752, now seen corresponding path program 3 times [2020-09-24 20:26:11,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:11,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986014359] [2020-09-24 20:26:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 20:26:12,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-09-24 20:26:12,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 20:26:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:12,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:12,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:26:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-24 20:26:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:26:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-24 20:26:13,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:13,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 20:26:13,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:13,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 20:26:13,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:13,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:26:13,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 20:26:13,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986014359] [2020-09-24 20:26:13,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:13,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:26:13,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919643736] [2020-09-24 20:26:13,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:26:13,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:13,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:26:13,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:26:13,818 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 14 states. [2020-09-24 20:26:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:13,932 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-09-24 20:26:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:26:13,932 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-09-24 20:26:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:13,934 INFO L225 Difference]: With dead ends: 70 [2020-09-24 20:26:13,934 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 20:26:13,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 20:26:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-09-24 20:26:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 20:26:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 20:26:13,941 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 58 [2020-09-24 20:26:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:13,941 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 20:26:13,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:26:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 20:26:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:26:13,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:13,943 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:13,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:26:13,943 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash 485800496, now seen corresponding path program 4 times [2020-09-24 20:26:13,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:13,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695394049] [2020-09-24 20:26:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:15,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 20:26:15,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:26:15,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-09-24 20:26:15,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 20:26:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:26:15,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:15,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:15,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:15,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:15,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:15,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:26:16,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-24 20:26:16,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:26:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:16,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-24 20:26:16,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:16,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 20:26:16,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:16,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:16,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 20:26:16,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:16,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:16,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:26:16,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 20:26:16,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695394049] [2020-09-24 20:26:16,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:16,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:26:16,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472714894] [2020-09-24 20:26:16,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:26:16,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:16,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:26:16,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:26:16,789 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 17 states. [2020-09-24 20:26:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:16,994 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-09-24 20:26:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:26:16,994 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 20:26:16,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:16,995 INFO L225 Difference]: With dead ends: 62 [2020-09-24 20:26:16,995 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 20:26:16,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:26:17,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 20:26:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-24 20:26:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 20:26:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-09-24 20:26:17,010 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 58 [2020-09-24 20:26:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:17,010 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-09-24 20:26:17,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:26:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-09-24 20:26:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 20:26:17,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:17,013 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:17,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:26:17,014 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:17,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:17,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1809338273, now seen corresponding path program 4 times [2020-09-24 20:26:17,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:17,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424315658] [2020-09-24 20:26:17,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:19,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 20:26:19,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2021 [2020-09-24 20:26:19,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 20:26:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:26:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:19,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:19,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:19,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:19,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:19,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:19,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:19,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-24 20:26:19,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 20:26:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:26:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:26:20,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-24 20:26:20,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:26:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-24 20:26:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:20,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 20:26:20,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:20,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:20,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 20:26:20,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:20,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:20,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 20:26:20,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424315658] [2020-09-24 20:26:20,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:20,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:26:20,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507164025] [2020-09-24 20:26:20,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:26:20,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:20,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:26:20,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:26:20,994 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 17 states. [2020-09-24 20:26:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:21,191 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-09-24 20:26:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:26:21,192 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2020-09-24 20:26:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:21,194 INFO L225 Difference]: With dead ends: 76 [2020-09-24 20:26:21,194 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 20:26:21,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:26:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 20:26:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-09-24 20:26:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:26:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-09-24 20:26:21,216 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 68 [2020-09-24 20:26:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:21,217 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-09-24 20:26:21,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:26:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-09-24 20:26:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 20:26:21,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:21,220 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:21,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:26:21,220 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:21,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1938626529, now seen corresponding path program 5 times [2020-09-24 20:26:21,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:21,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122379114] [2020-09-24 20:26:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 20:26:24,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:26:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3215 [2020-09-24 20:26:24,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 20:26:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:24,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:24,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:24,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:24,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:26:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:27,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:27,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:26:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2595 [2020-09-24 20:26:27,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 20:26:27,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:27,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:29,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:29,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:26:29,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:26:29,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2129 [2020-09-24 20:26:29,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:26:29,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:29,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:29,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:29,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:26:29,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-24 20:26:29,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:29,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:29,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:29,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:29,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 20:26:29,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:29,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:29,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:26:29,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 20:26:29,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:29,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:29,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:29,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:29,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 20:26:30,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122379114] [2020-09-24 20:26:30,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:30,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 20:26:30,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276414990] [2020-09-24 20:26:30,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 20:26:30,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:30,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 20:26:30,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:26:30,041 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 20 states. [2020-09-24 20:26:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:30,277 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-09-24 20:26:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 20:26:30,278 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-09-24 20:26:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:30,278 INFO L225 Difference]: With dead ends: 62 [2020-09-24 20:26:30,278 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:26:30,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:26:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:26:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:26:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:26:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:26:30,282 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2020-09-24 20:26:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:30,282 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:26:30,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 20:26:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:26:30,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:26:30,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:26:30,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:26:30,313 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 20:26:30,314 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:26:30,314 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:26:30,314 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:26:30,314 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:26:30,314 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:26:30,314 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-24 20:26:30,314 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-24 20:26:30,315 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-24 20:26:30,315 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:26:30,315 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-24 20:26:30,315 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-24 20:26:30,315 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 20:26:30,315 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 20:26:30,315 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-24 20:26:30,316 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 20:26:30,316 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 20:26:30,316 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 20:26:30,316 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-24 20:26:30,316 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-24 20:26:30,316 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-24 20:26:30,316 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 20:26:30,316 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 20:26:30,317 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-24 20:26:30,317 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-24 20:26:30,317 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 20:26:30,317 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 20:26:30,317 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 20:26:30,317 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-24 20:26:30,317 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-24 20:26:30,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:26:30 BoogieIcfgContainer [2020-09-24 20:26:30,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:26:30,333 INFO L168 Benchmark]: Toolchain (without parser) took 27997.44 ms. Allocated memory was 141.0 MB in the beginning and 427.8 MB in the end (delta: 286.8 MB). Free memory was 104.2 MB in the beginning and 214.1 MB in the end (delta: -109.9 MB). Peak memory consumption was 176.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:30,334 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:26:30,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.77 ms. Allocated memory is still 141.0 MB. Free memory was 103.6 MB in the beginning and 94.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:30,344 INFO L168 Benchmark]: Boogie Preprocessor took 33.92 ms. Allocated memory is still 141.0 MB. Free memory was 94.4 MB in the beginning and 93.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:30,345 INFO L168 Benchmark]: RCFGBuilder took 360.25 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 171.0 MB in the end (delta: -78.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:30,348 INFO L168 Benchmark]: TraceAbstraction took 27285.33 ms. Allocated memory was 203.4 MB in the beginning and 427.8 MB in the end (delta: 224.4 MB). Free memory was 170.3 MB in the beginning and 214.1 MB in the end (delta: -43.8 MB). Peak memory consumption was 180.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:30,351 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.77 ms. Allocated memory is still 141.0 MB. Free memory was 103.6 MB in the beginning and 94.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.92 ms. Allocated memory is still 141.0 MB. Free memory was 94.4 MB in the beginning and 93.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 360.25 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 171.0 MB in the end (delta: -78.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27285.33 ms. Allocated memory was 203.4 MB in the beginning and 427.8 MB in the end (delta: 224.4 MB). Free memory was 170.3 MB in the beginning and 214.1 MB in the end (delta: -43.8 MB). Peak memory consumption was 180.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.1s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 276 SDtfs, 165 SDslu, 1611 SDs, 0 SdLazy, 575 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 24.9s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 487 ConstructedInterpolants, 0 QuantifiedInterpolants, 51957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 210/510 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...