/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:57:52,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:57:52,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:57:52,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:57:52,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:57:52,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:57:52,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:57:52,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:57:52,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:57:52,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:57:52,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:57:52,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:57:52,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:57:52,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:57:52,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:57:52,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:57:52,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:57:52,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:57:52,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:57:52,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:57:52,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:57:52,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:57:52,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:57:52,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:57:52,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:57:52,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:57:52,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:57:52,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:57:52,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:57:52,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:57:52,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:57:52,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:57:52,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:57:52,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:57:52,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:57:52,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:57:52,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:57:52,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:57:52,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:57:52,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:57:52,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:57:52,120 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 22:57:52,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:57:52,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:57:52,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:57:52,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:57:52,148 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:57:52,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:57:52,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:57:52,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:57:52,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:57:52,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:57:52,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:57:52,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:57:52,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:57:52,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:57:52,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:57:52,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:57:52,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:57:52,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:57:52,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:57:52,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:57:52,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:57:52,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:57:52,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:57:52,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:57:52,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:57:52,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:57:52,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:57:52,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:57:52,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:57:52,153 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:57:52,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:57:52,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:57:52,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:57:52,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:57:52,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:57:52,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-09-24 22:57:52,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/736e131ec/4c37d41e6ede40428ce46563a99eee80/FLAG113ca3dd3 [2020-09-24 22:57:53,360 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:57:53,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-09-24 22:57:53,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/736e131ec/4c37d41e6ede40428ce46563a99eee80/FLAG113ca3dd3 [2020-09-24 22:57:53,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/736e131ec/4c37d41e6ede40428ce46563a99eee80 [2020-09-24 22:57:53,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:57:53,738 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:57:53,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:53,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:57:53,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:57:53,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:53" (1/1) ... [2020-09-24 22:57:53,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1576aa10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:53, skipping insertion in model container [2020-09-24 22:57:53,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:53" (1/1) ... [2020-09-24 22:57:53,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:57:53,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:57:54,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:54,054 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:57:54,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:54,130 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:57:54,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54 WrapperNode [2020-09-24 22:57:54,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:54,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:57:54,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:57:54,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:57:54,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (1/1) ... [2020-09-24 22:57:54,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:57:54,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:57:54,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:57:54,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:57:54,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (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 22:57:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:57:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:57:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-24 22:57:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-09-24 22:57:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-09-24 22:57:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-09-24 22:57:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-09-24 22:57:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-09-24 22:57:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-24 22:57:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-24 22:57:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-24 22:57:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-24 22:57:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-24 22:57:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-24 22:57:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:57:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:57:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:57:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-24 22:57:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-09-24 22:57:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-09-24 22:57:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-09-24 22:57:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-09-24 22:57:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-09-24 22:57:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-24 22:57:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-24 22:57:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-24 22:57:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-24 22:57:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-24 22:57:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-24 22:57:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:57:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:57:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:57:54,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:57:54,837 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 22:57:54,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:54 BoogieIcfgContainer [2020-09-24 22:57:54,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:57:54,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:57:54,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:57:54,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:57:54,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:57:53" (1/3) ... [2020-09-24 22:57:54,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e662043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:54, skipping insertion in model container [2020-09-24 22:57:54,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:54" (2/3) ... [2020-09-24 22:57:54,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e662043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:54, skipping insertion in model container [2020-09-24 22:57:54,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:54" (3/3) ... [2020-09-24 22:57:54,854 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2020-09-24 22:57:54,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:57:54,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:57:54,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:57:54,935 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:57:54,935 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:57:54,935 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:57:54,935 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:57:54,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:57:54,936 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:57:54,936 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:57:54,936 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:57:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-09-24 22:57:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-24 22:57:54,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:54,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:54,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:54,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:54,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1485288606, now seen corresponding path program 1 times [2020-09-24 22:57:55,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:55,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642781540] [2020-09-24 22:57:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:57,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 22:58:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:58:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:58:00,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:00,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 22:58:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:58:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:58:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:00,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:58:00,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:00,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:58:00,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:00,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:00,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:00,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:00,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:00,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:58:00,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 22:58:00,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 22:58:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:58:00,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:58:00,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 22:58:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:00,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:58:00,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:00,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:00,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:00,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:00,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:00,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:00,699 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 22:58:00,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642781540] [2020-09-24 22:58:00,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:00,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:58:00,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747200748] [2020-09-24 22:58:00,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:58:00,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:00,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:58:00,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:58:00,749 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 6 states. [2020-09-24 22:58:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:02,219 INFO L93 Difference]: Finished difference Result 573 states and 771 transitions. [2020-09-24 22:58:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:58:02,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-09-24 22:58:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:02,245 INFO L225 Difference]: With dead ends: 573 [2020-09-24 22:58:02,245 INFO L226 Difference]: Without dead ends: 416 [2020-09-24 22:58:02,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:58:02,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-09-24 22:58:02,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 305. [2020-09-24 22:58:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-09-24 22:58:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 366 transitions. [2020-09-24 22:58:02,419 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 366 transitions. Word has length 109 [2020-09-24 22:58:02,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:02,420 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 366 transitions. [2020-09-24 22:58:02,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:58:02,420 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 366 transitions. [2020-09-24 22:58:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-24 22:58:02,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:02,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:02,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:58:02,437 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash -388258462, now seen corresponding path program 1 times [2020-09-24 22:58:02,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:02,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379389399] [2020-09-24 22:58:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 22:58:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:58:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3267 [2020-09-24 22:58:05,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 22:58:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:58:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:05,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:05,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:05,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:05,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:05,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:05,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:58:05,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:05,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:05,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:05,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:05,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:58:05,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:05,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:58:05,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:05,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:05,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:05,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:58:05,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:58:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:58:05,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:05,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:05,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:05,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:58:05,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:58:05,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:58:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 22:58:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:05,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:05,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:58:05,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:58:05,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 22:58:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:05,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:05,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:05,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:05,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:05,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:05,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:05,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:05,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:05,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:05,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:05,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:05,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:05,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:05,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:05,969 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 22:58:05,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379389399] [2020-09-24 22:58:05,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:05,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:58:05,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480517411] [2020-09-24 22:58:05,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:58:05,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:05,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:58:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:58:05,973 INFO L87 Difference]: Start difference. First operand 305 states and 366 transitions. Second operand 7 states. [2020-09-24 22:58:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:07,054 INFO L93 Difference]: Finished difference Result 663 states and 819 transitions. [2020-09-24 22:58:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:58:07,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-09-24 22:58:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:07,060 INFO L225 Difference]: With dead ends: 663 [2020-09-24 22:58:07,060 INFO L226 Difference]: Without dead ends: 402 [2020-09-24 22:58:07,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:58:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-09-24 22:58:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 299. [2020-09-24 22:58:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-09-24 22:58:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 358 transitions. [2020-09-24 22:58:07,101 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 358 transitions. Word has length 110 [2020-09-24 22:58:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:07,101 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 358 transitions. [2020-09-24 22:58:07,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:58:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 358 transitions. [2020-09-24 22:58:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 22:58:07,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:07,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:07,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:58:07,106 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:07,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1991457360, now seen corresponding path program 1 times [2020-09-24 22:58:07,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:07,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097493693] [2020-09-24 22:58:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:07,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:07,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 22:58:11,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:58:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4122 [2020-09-24 22:58:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-24 22:58:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:58:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:11,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:11,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:11,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:11,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:11,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:58:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:11,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:11,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:11,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:11,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:11,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:11,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:11,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 22:58:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:58:11,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:58:11,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:58:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:11,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 22:58:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:11,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:58:11,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:58:11,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:58:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 22:58:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:11,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:11,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:58:11,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 22:58:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:11,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:11,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:11,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:11,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:11,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:11,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:11,569 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 22:58:11,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097493693] [2020-09-24 22:58:11,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:11,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 22:58:11,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119327416] [2020-09-24 22:58:11,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:58:11,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:11,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:58:11,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:58:11,572 INFO L87 Difference]: Start difference. First operand 299 states and 358 transitions. Second operand 8 states. [2020-09-24 22:58:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:13,733 INFO L93 Difference]: Finished difference Result 898 states and 1154 transitions. [2020-09-24 22:58:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:58:13,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-09-24 22:58:13,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:13,743 INFO L225 Difference]: With dead ends: 898 [2020-09-24 22:58:13,743 INFO L226 Difference]: Without dead ends: 643 [2020-09-24 22:58:13,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:58:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-09-24 22:58:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 479. [2020-09-24 22:58:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-24 22:58:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 570 transitions. [2020-09-24 22:58:13,788 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 570 transitions. Word has length 122 [2020-09-24 22:58:13,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:13,788 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 570 transitions. [2020-09-24 22:58:13,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:58:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 570 transitions. [2020-09-24 22:58:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-24 22:58:13,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:13,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:13,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:58:13,792 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:13,792 INFO L82 PathProgramCache]: Analyzing trace with hash -116221757, now seen corresponding path program 1 times [2020-09-24 22:58:13,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:13,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173991489] [2020-09-24 22:58:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:15,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:15,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 22:58:15,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:58:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2047 [2020-09-24 22:58:15,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:58:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:58:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 22:58:15,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:15,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:15,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:15,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:15,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:15,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:15,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:15,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:15,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:15,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:58:15,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:16,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 22:58:16,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:58:16,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:16,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:16,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:16,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:58:16,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:16,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 22:58:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:16,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:16,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:58:16,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:16,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:58:16,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 22:58:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:16,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:16,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:16,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:16,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:16,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:16,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:16,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:16,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:16,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:16,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:16,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:16,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:16,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:16,081 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 22:58:16,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173991489] [2020-09-24 22:58:16,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:16,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:58:16,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677041131] [2020-09-24 22:58:16,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:58:16,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:16,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:58:16,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:58:16,084 INFO L87 Difference]: Start difference. First operand 479 states and 570 transitions. Second operand 6 states. [2020-09-24 22:58:17,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:17,330 INFO L93 Difference]: Finished difference Result 1323 states and 1647 transitions. [2020-09-24 22:58:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:58:17,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-09-24 22:58:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:17,337 INFO L225 Difference]: With dead ends: 1323 [2020-09-24 22:58:17,337 INFO L226 Difference]: Without dead ends: 888 [2020-09-24 22:58:17,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:58:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-09-24 22:58:17,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 622. [2020-09-24 22:58:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-09-24 22:58:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 754 transitions. [2020-09-24 22:58:17,395 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 754 transitions. Word has length 113 [2020-09-24 22:58:17,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:17,395 INFO L479 AbstractCegarLoop]: Abstraction has 622 states and 754 transitions. [2020-09-24 22:58:17,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:58:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 754 transitions. [2020-09-24 22:58:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-24 22:58:17,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:17,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:17,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:58:17,398 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:17,398 INFO L82 PathProgramCache]: Analyzing trace with hash 892872046, now seen corresponding path program 1 times [2020-09-24 22:58:17,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:17,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499266280] [2020-09-24 22:58:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:20,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:20,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 22:58:20,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:58:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3346 [2020-09-24 22:58:20,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 22:58:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:58:20,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:20,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:20,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:20,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:20,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:20,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:20,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:20,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:20,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:20,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:58:20,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:20,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:20,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:20,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:20,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:20,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:20,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:20,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:20,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:20,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:20,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:58:20,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:20,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:20,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:20,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 22:58:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:20,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:20,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:58:20,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:58:20,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:58:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:58:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:21,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:21,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:21,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:21,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 22:58:21,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:21,049 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 22:58:21,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499266280] [2020-09-24 22:58:21,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:21,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:58:21,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878709613] [2020-09-24 22:58:21,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:58:21,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:21,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:58:21,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:58:21,054 INFO L87 Difference]: Start difference. First operand 622 states and 754 transitions. Second operand 7 states. [2020-09-24 22:58:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:22,832 INFO L93 Difference]: Finished difference Result 1783 states and 2284 transitions. [2020-09-24 22:58:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:58:22,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-09-24 22:58:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:22,842 INFO L225 Difference]: With dead ends: 1783 [2020-09-24 22:58:22,842 INFO L226 Difference]: Without dead ends: 1205 [2020-09-24 22:58:22,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:58:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2020-09-24 22:58:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 865. [2020-09-24 22:58:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-09-24 22:58:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1014 transitions. [2020-09-24 22:58:22,982 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1014 transitions. Word has length 113 [2020-09-24 22:58:22,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:22,983 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1014 transitions. [2020-09-24 22:58:22,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:58:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1014 transitions. [2020-09-24 22:58:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 22:58:22,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:22,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:22,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:58:22,988 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1708073376, now seen corresponding path program 1 times [2020-09-24 22:58:22,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:22,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777577053] [2020-09-24 22:58:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:23,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 22:58:28,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:58:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 22:58:28,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:58:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-24 22:58:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:28,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:28,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:28,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:28,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:58:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:28,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:28,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:58:28,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:28,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:28,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:28,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:28,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 22:58:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:58:28,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:58:28,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:28,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 22:58:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:28,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-24 22:58:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:58:28,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 22:58:28,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:58:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:58:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:28,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:28,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:58:28,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:58:28,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:58:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 22:58:28,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777577053] [2020-09-24 22:58:28,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:58:28,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:58:28,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466174248] [2020-09-24 22:58:28,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:58:28,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:28,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:58:28,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:58:28,381 INFO L87 Difference]: Start difference. First operand 865 states and 1014 transitions. Second operand 10 states. [2020-09-24 22:58:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:29,907 INFO L93 Difference]: Finished difference Result 1571 states and 1889 transitions. [2020-09-24 22:58:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:58:29,908 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-09-24 22:58:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:29,916 INFO L225 Difference]: With dead ends: 1571 [2020-09-24 22:58:29,916 INFO L226 Difference]: Without dead ends: 1113 [2020-09-24 22:58:29,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:58:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-09-24 22:58:29,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 900. [2020-09-24 22:58:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-09-24 22:58:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1050 transitions. [2020-09-24 22:58:29,992 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1050 transitions. Word has length 147 [2020-09-24 22:58:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:29,993 INFO L479 AbstractCegarLoop]: Abstraction has 900 states and 1050 transitions. [2020-09-24 22:58:29,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:58:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1050 transitions. [2020-09-24 22:58:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 22:58:29,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:29,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:29,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:58:29,998 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:29,998 INFO L82 PathProgramCache]: Analyzing trace with hash -218769699, now seen corresponding path program 1 times [2020-09-24 22:58:29,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:29,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112591611] [2020-09-24 22:58:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 22:58:31,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:58:31,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-09-24 22:58:31,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 22:58:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 22:58:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:31,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:31,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:31,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:31,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:58:31,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:31,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:31,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:58:31,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:31,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:31,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:31,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:31,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:31,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:31,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 22:58:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:58:31,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:58:31,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:58:31,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:31,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 22:58:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:31,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:58:31,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 36 [2020-09-24 22:58:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-24 22:58:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:58:31,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:58:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 22:58:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:31,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:31,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:31,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:31,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:31,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:31,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:58:31,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:58:31,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:58:31,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112591611] [2020-09-24 22:58:31,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:31,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:58:31,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201941631] [2020-09-24 22:58:31,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:58:31,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:31,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:58:31,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:58:31,394 INFO L87 Difference]: Start difference. First operand 900 states and 1050 transitions. Second operand 7 states. [2020-09-24 22:58:32,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:32,650 INFO L93 Difference]: Finished difference Result 2418 states and 2944 transitions. [2020-09-24 22:58:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:58:32,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-09-24 22:58:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:32,662 INFO L225 Difference]: With dead ends: 2418 [2020-09-24 22:58:32,662 INFO L226 Difference]: Without dead ends: 1562 [2020-09-24 22:58:32,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:58:32,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-09-24 22:58:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1315. [2020-09-24 22:58:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-09-24 22:58:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1574 transitions. [2020-09-24 22:58:32,799 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1574 transitions. Word has length 147 [2020-09-24 22:58:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:32,799 INFO L479 AbstractCegarLoop]: Abstraction has 1315 states and 1574 transitions. [2020-09-24 22:58:32,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:58:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1574 transitions. [2020-09-24 22:58:32,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 22:58:32,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:32,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:32,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:58:32,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:32,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:32,808 INFO L82 PathProgramCache]: Analyzing trace with hash 136608560, now seen corresponding path program 1 times [2020-09-24 22:58:32,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:32,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112688800] [2020-09-24 22:58:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:33,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:33,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 22:58:33,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:58:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-09-24 22:58:33,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:58:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-24 22:58:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:33,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:33,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:33,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:33,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:33,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:33,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:33,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:33,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:33,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:33,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:33,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:58:33,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:33,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:33,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:33,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:33,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:33,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:33,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:33,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:33,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:33,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:33,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:33,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:33,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:33,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 22:58:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:33,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:33,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:58:33,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:58:33,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:33,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:33,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:33,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:58:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:34,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:34,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:34,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:58:34,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:34,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:34,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:34,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:34,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:34,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:34,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:34,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:34,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:34,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:34,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:34,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:34,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:34,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:34,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:34,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 22:58:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:34,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:34,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:58:34,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:34,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 22:58:34,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:58:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:58:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:34,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:34,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:34,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:34,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:58:34,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:58:34,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:58:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:58:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:34,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:34,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:34,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:34,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:58:34,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:58:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 22:58:34,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112688800] [2020-09-24 22:58:34,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:34,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:58:34,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942853332] [2020-09-24 22:58:34,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:58:34,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:34,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:58:34,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:58:34,180 INFO L87 Difference]: Start difference. First operand 1315 states and 1574 transitions. Second operand 10 states. [2020-09-24 22:58:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:35,712 INFO L93 Difference]: Finished difference Result 2509 states and 3142 transitions. [2020-09-24 22:58:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:58:35,712 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-09-24 22:58:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:35,723 INFO L225 Difference]: With dead ends: 2509 [2020-09-24 22:58:35,723 INFO L226 Difference]: Without dead ends: 1599 [2020-09-24 22:58:35,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:58:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2020-09-24 22:58:35,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1387. [2020-09-24 22:58:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2020-09-24 22:58:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1651 transitions. [2020-09-24 22:58:35,858 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1651 transitions. Word has length 160 [2020-09-24 22:58:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:35,859 INFO L479 AbstractCegarLoop]: Abstraction has 1387 states and 1651 transitions. [2020-09-24 22:58:35,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:58:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1651 transitions. [2020-09-24 22:58:35,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 22:58:35,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:35,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:35,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:58:35,864 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:35,864 INFO L82 PathProgramCache]: Analyzing trace with hash 651313811, now seen corresponding path program 1 times [2020-09-24 22:58:35,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:35,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371682419] [2020-09-24 22:58:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 22:58:36,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:58:36,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-24 22:58:36,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:36,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-09-24 22:58:36,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:58:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:58:36,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:36,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 22:58:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 22:58:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:58:36,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:58:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:36,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:58:36,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 22:58:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:36,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:58:36,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 22:58:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:58:36,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:58:36,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:58:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:58:36,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:58:36,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:36,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:36,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:36,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:36,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:58:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:58:36,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 22:58:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:58:36,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:58:36,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:58:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 22:58:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:58:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:58:36,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:58:36,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 22:58:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:58:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:58:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:58:36,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:58:36,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 22:58:36,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371682419] [2020-09-24 22:58:36,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:36,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 22:58:36,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052996142] [2020-09-24 22:58:36,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:58:36,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:36,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:58:36,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:58:36,678 INFO L87 Difference]: Start difference. First operand 1387 states and 1651 transitions. Second operand 8 states. [2020-09-24 22:58:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:39,488 INFO L93 Difference]: Finished difference Result 3818 states and 5062 transitions. [2020-09-24 22:58:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 22:58:39,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-09-24 22:58:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:39,505 INFO L225 Difference]: With dead ends: 3818 [2020-09-24 22:58:39,505 INFO L226 Difference]: Without dead ends: 2836 [2020-09-24 22:58:39,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-09-24 22:58:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2020-09-24 22:58:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2467. [2020-09-24 22:58:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-24 22:58:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3133 transitions. [2020-09-24 22:58:39,714 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3133 transitions. Word has length 160 [2020-09-24 22:58:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:39,715 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 3133 transitions. [2020-09-24 22:58:39,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:58:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3133 transitions. [2020-09-24 22:58:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-24 22:58:39,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:39,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:39,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:58:39,720 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:39,721 INFO L82 PathProgramCache]: Analyzing trace with hash 433644963, now seen corresponding path program 1 times [2020-09-24 22:58:39,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:39,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926920888] [2020-09-24 22:58:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking...