/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.04.i.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:52:27,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:52:27,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:52:27,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:52:27,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:52:27,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:52:27,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:52:27,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:52:27,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:52:27,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:52:27,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:52:27,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:52:27,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:52:27,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:52:27,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:52:27,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:52:27,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:52:27,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:52:27,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:52:27,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:52:27,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:52:27,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:52:27,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:52:27,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:52:27,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:52:27,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:52:27,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:52:27,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:52:27,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:52:27,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:52:27,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:52:27,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:52:27,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:52:27,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:52:27,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:52:27,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:52:27,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:52:27,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:52:27,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:52:27,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:52:27,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:52:27,340 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 [2020-10-12 20:52:27,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:52:27,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:52:27,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:52:27,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:52:27,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:52:27,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:52:27,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:52:27,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:52:27,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:52:27,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:52:27,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:52:27,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:52:27,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:52:27,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:52:27,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:52:27,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:52:27,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:52:27,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:52:27,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:52:27,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:52:27,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:52:27,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:52:27,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:52:27,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:52:27,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:52:27,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:52:27,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:52:27,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:52:27,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:52:27,385 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:52:27,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:52:27,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:52:27,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:52:27,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:52:27,710 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:52:27,715 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.04.i.cil.c [2020-10-12 20:52:27,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fb39287/ec7c63862a884550a1629ef73c6889fd/FLAGa061c2827 [2020-10-12 20:52:28,440 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:52:28,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.04.i.cil.c [2020-10-12 20:52:28,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fb39287/ec7c63862a884550a1629ef73c6889fd/FLAGa061c2827 [2020-10-12 20:52:28,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fb39287/ec7c63862a884550a1629ef73c6889fd [2020-10-12 20:52:28,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:52:28,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:52:28,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:52:28,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:52:28,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:52:28,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:52:28" (1/1) ... [2020-10-12 20:52:28,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccabf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:28, skipping insertion in model container [2020-10-12 20:52:28,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:52:28" (1/1) ... [2020-10-12 20:52:28,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:52:28,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:52:29,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:52:29,268 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:52:29,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:52:29,561 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:52:29,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29 WrapperNode [2020-10-12 20:52:29,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:52:29,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:52:29,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:52:29,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:52:29,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (1/1) ... [2020-10-12 20:52:29,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (1/1) ... [2020-10-12 20:52:29,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (1/1) ... [2020-10-12 20:52:29,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (1/1) ... [2020-10-12 20:52:29,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (1/1) ... [2020-10-12 20:52:29,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (1/1) ... [2020-10-12 20:52:29,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (1/1) ... [2020-10-12 20:52:29,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:52:29,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:52:29,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:52:29,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:52:29,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (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 [2020-10-12 20:52:29,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:52:29,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:52:29,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:52:29,934 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:52:29,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:52:29,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:52:29,935 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:52:29,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:52:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:52:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:52:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:52:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:52:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:52:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:52:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:52:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:52:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:52:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:52:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:52:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:52:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:52:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:52:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:52:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:52:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:52:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:52:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:52:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:52:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:52:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:52:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:52:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:52:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:52:30,637 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:52:31,278 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:52:31,278 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:52:31,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:52:31,302 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:52:31,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:52:31 BoogieIcfgContainer [2020-10-12 20:52:31,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:52:31,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:52:31,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:52:31,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:52:31,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:52:28" (1/3) ... [2020-10-12 20:52:31,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa1c2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:52:31, skipping insertion in model container [2020-10-12 20:52:31,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:29" (2/3) ... [2020-10-12 20:52:31,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa1c2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:52:31, skipping insertion in model container [2020-10-12 20:52:31,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:52:31" (3/3) ... [2020-10-12 20:52:31,315 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.04.i.cil.c [2020-10-12 20:52:31,325 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:52:31,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:52:31,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:52:31,377 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:52:31,377 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:52:31,377 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:52:31,377 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:52:31,377 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:52:31,377 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:52:31,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:52:31,378 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:52:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-10-12 20:52:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 20:52:31,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:31,413 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] [2020-10-12 20:52:31,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:31,420 INFO L82 PathProgramCache]: Analyzing trace with hash 416306971, now seen corresponding path program 1 times [2020-10-12 20:52:31,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:31,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699047813] [2020-10-12 20:52:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:31,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:32,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 20:52:32,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-12 20:52:32,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:52:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:52:32,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:52:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:32,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699047813] [2020-10-12 20:52:32,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:32,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:32,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612601182] [2020-10-12 20:52:32,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:32,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:32,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:32,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:32,780 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 5 states. [2020-10-12 20:52:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:33,830 INFO L93 Difference]: Finished difference Result 323 states and 538 transitions. [2020-10-12 20:52:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:33,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-12 20:52:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:33,846 INFO L225 Difference]: With dead ends: 323 [2020-10-12 20:52:33,846 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 20:52:33,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 20:52:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-10-12 20:52:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-12 20:52:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 222 transitions. [2020-10-12 20:52:33,908 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 222 transitions. Word has length 51 [2020-10-12 20:52:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:33,908 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 222 transitions. [2020-10-12 20:52:33,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 222 transitions. [2020-10-12 20:52:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:52:33,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:33,916 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:52:33,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:52:33,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:33,917 INFO L82 PathProgramCache]: Analyzing trace with hash -816750361, now seen corresponding path program 1 times [2020-10-12 20:52:33,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:33,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870278310] [2020-10-12 20:52:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:35,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:35,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:52:35,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:35,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-12 20:52:35,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:52:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:52:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:35,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:35,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:35,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:35,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:52:35,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:35,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870278310] [2020-10-12 20:52:35,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:35,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:35,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454781788] [2020-10-12 20:52:35,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:35,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:35,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:35,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:35,786 INFO L87 Difference]: Start difference. First operand 147 states and 222 transitions. Second operand 5 states. [2020-10-12 20:52:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:36,632 INFO L93 Difference]: Finished difference Result 286 states and 429 transitions. [2020-10-12 20:52:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:36,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:52:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:36,635 INFO L225 Difference]: With dead ends: 286 [2020-10-12 20:52:36,635 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 20:52:36,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:36,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 20:52:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-10-12 20:52:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-12 20:52:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 221 transitions. [2020-10-12 20:52:36,651 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 221 transitions. Word has length 64 [2020-10-12 20:52:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:36,652 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 221 transitions. [2020-10-12 20:52:36,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 221 transitions. [2020-10-12 20:52:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:52:36,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:36,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:36,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:52:36,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1981568581, now seen corresponding path program 1 times [2020-10-12 20:52:36,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:36,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132723684] [2020-10-12 20:52:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:40,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:52:40,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4284 [2020-10-12 20:52:40,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:52:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:52:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:41,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:41,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:41,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:41,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:41,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132723684] [2020-10-12 20:52:41,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:41,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:41,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87016486] [2020-10-12 20:52:41,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:41,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:41,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:41,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:41,103 INFO L87 Difference]: Start difference. First operand 147 states and 221 transitions. Second operand 5 states. [2020-10-12 20:52:41,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:41,833 INFO L93 Difference]: Finished difference Result 286 states and 428 transitions. [2020-10-12 20:52:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:41,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:52:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:41,836 INFO L225 Difference]: With dead ends: 286 [2020-10-12 20:52:41,836 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 20:52:41,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 20:52:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2020-10-12 20:52:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 20:52:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 233 transitions. [2020-10-12 20:52:41,868 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 233 transitions. Word has length 65 [2020-10-12 20:52:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:41,870 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 233 transitions. [2020-10-12 20:52:41,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 233 transitions. [2020-10-12 20:52:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:52:41,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:41,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:41,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:52:41,874 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:41,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:41,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1284246148, now seen corresponding path program 1 times [2020-10-12 20:52:41,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:41,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110461575] [2020-10-12 20:52:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:42,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:52:42,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-10-12 20:52:42,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:52:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:42,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:42,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:42,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:42,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:42,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:42,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:42,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:42,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110461575] [2020-10-12 20:52:42,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:42,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:42,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662201603] [2020-10-12 20:52:42,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:42,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:42,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:42,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:42,850 INFO L87 Difference]: Start difference. First operand 157 states and 233 transitions. Second operand 5 states. [2020-10-12 20:52:43,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:43,605 INFO L93 Difference]: Finished difference Result 284 states and 425 transitions. [2020-10-12 20:52:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:43,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:52:43,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:43,608 INFO L225 Difference]: With dead ends: 284 [2020-10-12 20:52:43,608 INFO L226 Difference]: Without dead ends: 162 [2020-10-12 20:52:43,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-12 20:52:43,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2020-10-12 20:52:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 20:52:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 232 transitions. [2020-10-12 20:52:43,620 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 232 transitions. Word has length 65 [2020-10-12 20:52:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:43,620 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 232 transitions. [2020-10-12 20:52:43,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 232 transitions. [2020-10-12 20:52:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:52:43,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:43,622 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:52:43,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:52:43,623 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:43,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1784897669, now seen corresponding path program 1 times [2020-10-12 20:52:43,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:43,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324668214] [2020-10-12 20:52:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:44,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:52:44,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:44,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-12 20:52:44,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:52:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:44,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:44,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:44,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:44,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:44,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324668214] [2020-10-12 20:52:44,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:44,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:44,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193541316] [2020-10-12 20:52:44,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:44,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:44,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:44,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:44,213 INFO L87 Difference]: Start difference. First operand 157 states and 232 transitions. Second operand 5 states. [2020-10-12 20:52:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:44,824 INFO L93 Difference]: Finished difference Result 283 states and 423 transitions. [2020-10-12 20:52:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:44,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:52:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:44,827 INFO L225 Difference]: With dead ends: 283 [2020-10-12 20:52:44,827 INFO L226 Difference]: Without dead ends: 161 [2020-10-12 20:52:44,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-12 20:52:44,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2020-10-12 20:52:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 20:52:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 231 transitions. [2020-10-12 20:52:44,837 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 231 transitions. Word has length 65 [2020-10-12 20:52:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:44,837 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 231 transitions. [2020-10-12 20:52:44,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 231 transitions. [2020-10-12 20:52:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 20:52:44,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:44,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:44,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:52:44,839 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:44,840 INFO L82 PathProgramCache]: Analyzing trace with hash -874943050, now seen corresponding path program 1 times [2020-10-12 20:52:44,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:44,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728179036] [2020-10-12 20:52:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:44,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:49,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:52:49,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:52:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:52:49,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:52:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:52:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:50,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:50,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:50,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:50,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:50,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:50,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728179036] [2020-10-12 20:52:50,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:50,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:52:50,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894513719] [2020-10-12 20:52:50,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:52:50,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:50,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:52:50,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:52:50,073 INFO L87 Difference]: Start difference. First operand 157 states and 231 transitions. Second operand 8 states. [2020-10-12 20:52:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:51,443 INFO L93 Difference]: Finished difference Result 423 states and 635 transitions. [2020-10-12 20:52:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:51,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-12 20:52:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:51,447 INFO L225 Difference]: With dead ends: 423 [2020-10-12 20:52:51,447 INFO L226 Difference]: Without dead ends: 301 [2020-10-12 20:52:51,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:52:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-12 20:52:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 255. [2020-10-12 20:52:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-12 20:52:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 387 transitions. [2020-10-12 20:52:51,461 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 387 transitions. Word has length 66 [2020-10-12 20:52:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:51,462 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 387 transitions. [2020-10-12 20:52:51,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:52:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 387 transitions. [2020-10-12 20:52:51,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:52:51,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:51,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:51,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:52:51,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:51,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:51,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1266106814, now seen corresponding path program 1 times [2020-10-12 20:52:51,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:51,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953825197] [2020-10-12 20:52:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:51,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:52:51,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-12 20:52:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:52:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:51,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:51,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:51,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:51,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:51,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:51,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:51,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:51,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953825197] [2020-10-12 20:52:51,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:51,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:51,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788313918] [2020-10-12 20:52:51,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:51,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:51,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:51,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:51,982 INFO L87 Difference]: Start difference. First operand 255 states and 387 transitions. Second operand 5 states. [2020-10-12 20:52:52,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:52,753 INFO L93 Difference]: Finished difference Result 555 states and 850 transitions. [2020-10-12 20:52:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:52,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-12 20:52:52,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:52,762 INFO L225 Difference]: With dead ends: 555 [2020-10-12 20:52:52,762 INFO L226 Difference]: Without dead ends: 433 [2020-10-12 20:52:52,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-12 20:52:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 338. [2020-10-12 20:52:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-12 20:52:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 542 transitions. [2020-10-12 20:52:52,781 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 542 transitions. Word has length 68 [2020-10-12 20:52:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:52,781 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 542 transitions. [2020-10-12 20:52:52,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 542 transitions. [2020-10-12 20:52:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:52:52,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:52,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:52,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:52:52,783 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:52,784 INFO L82 PathProgramCache]: Analyzing trace with hash 587450902, now seen corresponding path program 1 times [2020-10-12 20:52:52,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:52,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17411337] [2020-10-12 20:52:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:53,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:52:53,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:53,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-12 20:52:53,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:52:53,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:53,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:53,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:53,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17411337] [2020-10-12 20:52:53,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:53,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:53,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213785230] [2020-10-12 20:52:53,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:53,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:53,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:53,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:53,515 INFO L87 Difference]: Start difference. First operand 338 states and 542 transitions. Second operand 5 states. [2020-10-12 20:52:54,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:54,204 INFO L93 Difference]: Finished difference Result 642 states and 1014 transitions. [2020-10-12 20:52:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:54,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-12 20:52:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:54,208 INFO L225 Difference]: With dead ends: 642 [2020-10-12 20:52:54,208 INFO L226 Difference]: Without dead ends: 339 [2020-10-12 20:52:54,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:54,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-12 20:52:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 299. [2020-10-12 20:52:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-12 20:52:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 463 transitions. [2020-10-12 20:52:54,221 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 463 transitions. Word has length 69 [2020-10-12 20:52:54,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:54,221 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 463 transitions. [2020-10-12 20:52:54,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 463 transitions. [2020-10-12 20:52:54,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:52:54,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:54,223 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:54,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:52:54,223 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:54,224 INFO L82 PathProgramCache]: Analyzing trace with hash -477815252, now seen corresponding path program 1 times [2020-10-12 20:52:54,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:54,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27787580] [2020-10-12 20:52:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:59,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:59,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:52:59,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:59,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:52:59,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:59,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:52:59,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:52:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:52:59,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:59,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:59,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:59,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:59,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:59,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:59,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:59,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:59,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27787580] [2020-10-12 20:52:59,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:59,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:52:59,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526867217] [2020-10-12 20:52:59,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:52:59,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:59,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:52:59,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:59,338 INFO L87 Difference]: Start difference. First operand 299 states and 463 transitions. Second operand 6 states. [2020-10-12 20:52:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:59,918 INFO L93 Difference]: Finished difference Result 490 states and 755 transitions. [2020-10-12 20:52:59,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:52:59,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-12 20:52:59,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:59,921 INFO L225 Difference]: With dead ends: 490 [2020-10-12 20:52:59,921 INFO L226 Difference]: Without dead ends: 316 [2020-10-12 20:52:59,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:52:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-12 20:52:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 306. [2020-10-12 20:52:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-12 20:52:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 471 transitions. [2020-10-12 20:52:59,935 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 471 transitions. Word has length 79 [2020-10-12 20:52:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:59,935 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 471 transitions. [2020-10-12 20:52:59,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:52:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 471 transitions. [2020-10-12 20:52:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:52:59,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:59,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 20:52:59,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:52:59,937 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:59,938 INFO L82 PathProgramCache]: Analyzing trace with hash 586764992, now seen corresponding path program 1 times [2020-10-12 20:52:59,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:59,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115688832] [2020-10-12 20:52:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:04,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:04,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:53:04,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:53:04,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:04,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:53:04,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:05,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:05,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:05,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:05,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:05,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:05,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:05,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115688832] [2020-10-12 20:53:05,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:05,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:05,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911540739] [2020-10-12 20:53:05,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:05,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:05,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:05,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:05,085 INFO L87 Difference]: Start difference. First operand 306 states and 471 transitions. Second operand 5 states. [2020-10-12 20:53:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:05,777 INFO L93 Difference]: Finished difference Result 492 states and 755 transitions. [2020-10-12 20:53:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:05,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:53:05,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:05,780 INFO L225 Difference]: With dead ends: 492 [2020-10-12 20:53:05,781 INFO L226 Difference]: Without dead ends: 310 [2020-10-12 20:53:05,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-12 20:53:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2020-10-12 20:53:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-12 20:53:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 470 transitions. [2020-10-12 20:53:05,798 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 470 transitions. Word has length 79 [2020-10-12 20:53:05,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:05,799 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 470 transitions. [2020-10-12 20:53:05,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 470 transitions. [2020-10-12 20:53:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:53:05,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:05,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:05,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:53:05,802 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash -246918589, now seen corresponding path program 1 times [2020-10-12 20:53:05,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:05,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567650755] [2020-10-12 20:53:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:05,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:10,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:53:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:53:10,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:53:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:10,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:10,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:10,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:10,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:10,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:10,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567650755] [2020-10-12 20:53:10,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:10,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:10,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445950793] [2020-10-12 20:53:10,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:10,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:10,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:10,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:10,891 INFO L87 Difference]: Start difference. First operand 306 states and 470 transitions. Second operand 5 states. [2020-10-12 20:53:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:11,524 INFO L93 Difference]: Finished difference Result 492 states and 754 transitions. [2020-10-12 20:53:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:11,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:53:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:11,526 INFO L225 Difference]: With dead ends: 492 [2020-10-12 20:53:11,527 INFO L226 Difference]: Without dead ends: 310 [2020-10-12 20:53:11,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-12 20:53:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2020-10-12 20:53:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-12 20:53:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 469 transitions. [2020-10-12 20:53:11,538 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 469 transitions. Word has length 80 [2020-10-12 20:53:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:11,538 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 469 transitions. [2020-10-12 20:53:11,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 469 transitions. [2020-10-12 20:53:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:53:11,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:11,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:11,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:53:11,540 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1364797339, now seen corresponding path program 1 times [2020-10-12 20:53:11,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:11,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084941165] [2020-10-12 20:53:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:13,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:15,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:15,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:53:15,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4032 [2020-10-12 20:53:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:53:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:15,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:15,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:15,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:15,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:15,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:15,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084941165] [2020-10-12 20:53:15,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:15,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:15,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447723331] [2020-10-12 20:53:15,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:15,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:15,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:15,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:15,655 INFO L87 Difference]: Start difference. First operand 306 states and 469 transitions. Second operand 5 states. [2020-10-12 20:53:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:16,281 INFO L93 Difference]: Finished difference Result 492 states and 753 transitions. [2020-10-12 20:53:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:16,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:53:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:16,285 INFO L225 Difference]: With dead ends: 492 [2020-10-12 20:53:16,285 INFO L226 Difference]: Without dead ends: 310 [2020-10-12 20:53:16,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-12 20:53:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2020-10-12 20:53:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-12 20:53:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 468 transitions. [2020-10-12 20:53:16,298 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 468 transitions. Word has length 81 [2020-10-12 20:53:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:16,298 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 468 transitions. [2020-10-12 20:53:16,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:16,298 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 468 transitions. [2020-10-12 20:53:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:53:16,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:16,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:16,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:53:16,300 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:16,301 INFO L82 PathProgramCache]: Analyzing trace with hash 619583268, now seen corresponding path program 1 times [2020-10-12 20:53:16,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:16,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533309582] [2020-10-12 20:53:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:16,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:17,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:53:17,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-12 20:53:17,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:53:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:53:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:17,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:17,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:17,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:17,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:17,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:53:17,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533309582] [2020-10-12 20:53:17,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:17,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:17,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537123121] [2020-10-12 20:53:17,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:17,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:17,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:17,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:17,182 INFO L87 Difference]: Start difference. First operand 306 states and 468 transitions. Second operand 5 states. [2020-10-12 20:53:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:17,936 INFO L93 Difference]: Finished difference Result 540 states and 827 transitions. [2020-10-12 20:53:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:17,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:53:17,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:17,941 INFO L225 Difference]: With dead ends: 540 [2020-10-12 20:53:17,941 INFO L226 Difference]: Without dead ends: 387 [2020-10-12 20:53:17,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-12 20:53:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 338. [2020-10-12 20:53:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-12 20:53:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 526 transitions. [2020-10-12 20:53:17,956 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 526 transitions. Word has length 81 [2020-10-12 20:53:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:17,956 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 526 transitions. [2020-10-12 20:53:17,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 526 transitions. [2020-10-12 20:53:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:53:17,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:17,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 20:53:17,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:53:17,958 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:17,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:17,959 INFO L82 PathProgramCache]: Analyzing trace with hash -404899042, now seen corresponding path program 1 times [2020-10-12 20:53:17,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:17,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643791088] [2020-10-12 20:53:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:22,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:22,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:53:22,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:53:22,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:53:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:23,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:23,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:23,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:23,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:23,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643791088] [2020-10-12 20:53:23,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:23,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:23,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654601123] [2020-10-12 20:53:23,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:23,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:23,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:23,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:23,059 INFO L87 Difference]: Start difference. First operand 338 states and 526 transitions. Second operand 5 states. [2020-10-12 20:53:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:23,721 INFO L93 Difference]: Finished difference Result 571 states and 881 transitions. [2020-10-12 20:53:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:23,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:53:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:23,724 INFO L225 Difference]: With dead ends: 571 [2020-10-12 20:53:23,724 INFO L226 Difference]: Without dead ends: 376 [2020-10-12 20:53:23,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-12 20:53:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 347. [2020-10-12 20:53:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-12 20:53:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 535 transitions. [2020-10-12 20:53:23,741 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 535 transitions. Word has length 82 [2020-10-12 20:53:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:23,741 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 535 transitions. [2020-10-12 20:53:23,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 535 transitions. [2020-10-12 20:53:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:53:23,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:23,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:23,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:53:23,744 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:23,744 INFO L82 PathProgramCache]: Analyzing trace with hash -933400088, now seen corresponding path program 1 times [2020-10-12 20:53:23,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:23,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976322481] [2020-10-12 20:53:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:24,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:24,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:53:24,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-12 20:53:24,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:53:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:53:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:24,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:24,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:24,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:24,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:53:24,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976322481] [2020-10-12 20:53:24,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:24,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:24,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918523228] [2020-10-12 20:53:24,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:24,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:24,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:24,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:24,240 INFO L87 Difference]: Start difference. First operand 347 states and 535 transitions. Second operand 5 states. [2020-10-12 20:53:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:25,098 INFO L93 Difference]: Finished difference Result 729 states and 1127 transitions. [2020-10-12 20:53:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:25,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:53:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:25,101 INFO L225 Difference]: With dead ends: 729 [2020-10-12 20:53:25,102 INFO L226 Difference]: Without dead ends: 535 [2020-10-12 20:53:25,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-12 20:53:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 432. [2020-10-12 20:53:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-12 20:53:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 692 transitions. [2020-10-12 20:53:25,120 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 692 transitions. Word has length 82 [2020-10-12 20:53:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:25,120 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 692 transitions. [2020-10-12 20:53:25,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 692 transitions. [2020-10-12 20:53:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:53:25,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:25,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:25,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:53:25,122 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1122213676, now seen corresponding path program 1 times [2020-10-12 20:53:25,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:25,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534645899] [2020-10-12 20:53:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:25,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:25,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:53:25,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:25,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-12 20:53:25,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:53:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:25,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:25,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:25,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534645899] [2020-10-12 20:53:25,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:25,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:25,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905079025] [2020-10-12 20:53:25,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:25,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:25,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:25,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:25,756 INFO L87 Difference]: Start difference. First operand 432 states and 692 transitions. Second operand 5 states. [2020-10-12 20:53:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:26,364 INFO L93 Difference]: Finished difference Result 866 states and 1390 transitions. [2020-10-12 20:53:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:26,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-12 20:53:26,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:26,367 INFO L225 Difference]: With dead ends: 866 [2020-10-12 20:53:26,368 INFO L226 Difference]: Without dead ends: 459 [2020-10-12 20:53:26,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-12 20:53:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 432. [2020-10-12 20:53:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-12 20:53:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 690 transitions. [2020-10-12 20:53:26,383 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 690 transitions. Word has length 83 [2020-10-12 20:53:26,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:26,384 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 690 transitions. [2020-10-12 20:53:26,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 690 transitions. [2020-10-12 20:53:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:53:26,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:26,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:26,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:53:26,386 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:26,386 INFO L82 PathProgramCache]: Analyzing trace with hash -319309062, now seen corresponding path program 1 times [2020-10-12 20:53:26,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:26,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349635753] [2020-10-12 20:53:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:26,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:31,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:53:31,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:53:31,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:53:31,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:31,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:53:31,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:53:31,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:31,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:31,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:31,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:31,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:31,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349635753] [2020-10-12 20:53:31,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:31,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:31,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111994016] [2020-10-12 20:53:31,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:31,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:31,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:31,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:31,520 INFO L87 Difference]: Start difference. First operand 432 states and 690 transitions. Second operand 5 states. [2020-10-12 20:53:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:32,385 INFO L93 Difference]: Finished difference Result 838 states and 1316 transitions. [2020-10-12 20:53:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:32,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-12 20:53:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:32,390 INFO L225 Difference]: With dead ends: 838 [2020-10-12 20:53:32,390 INFO L226 Difference]: Without dead ends: 590 [2020-10-12 20:53:32,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-10-12 20:53:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 448. [2020-10-12 20:53:32,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-12 20:53:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 711 transitions. [2020-10-12 20:53:32,412 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 711 transitions. Word has length 83 [2020-10-12 20:53:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:32,413 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 711 transitions. [2020-10-12 20:53:32,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 711 transitions. [2020-10-12 20:53:32,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:53:32,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:32,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:32,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:53:32,415 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:32,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash -675975357, now seen corresponding path program 1 times [2020-10-12 20:53:32,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:32,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615316081] [2020-10-12 20:53:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:37,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:53:37,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:53:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:53:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:53:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:37,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:37,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:37,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:37,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:37,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615316081] [2020-10-12 20:53:37,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:37,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:53:37,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548994808] [2020-10-12 20:53:37,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:53:37,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:37,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:53:37,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:53:37,660 INFO L87 Difference]: Start difference. First operand 448 states and 711 transitions. Second operand 9 states. [2020-10-12 20:53:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:39,446 INFO L93 Difference]: Finished difference Result 938 states and 1481 transitions. [2020-10-12 20:53:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:53:39,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-12 20:53:39,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:39,450 INFO L225 Difference]: With dead ends: 938 [2020-10-12 20:53:39,450 INFO L226 Difference]: Without dead ends: 684 [2020-10-12 20:53:39,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:53:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-12 20:53:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 457. [2020-10-12 20:53:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-12 20:53:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 722 transitions. [2020-10-12 20:53:39,472 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 722 transitions. Word has length 84 [2020-10-12 20:53:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:39,473 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 722 transitions. [2020-10-12 20:53:39,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:53:39,473 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 722 transitions. [2020-10-12 20:53:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:53:39,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:39,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:39,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:53:39,475 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:39,475 INFO L82 PathProgramCache]: Analyzing trace with hash -519464240, now seen corresponding path program 1 times [2020-10-12 20:53:39,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:39,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662811055] [2020-10-12 20:53:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:39,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:41,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:53:41,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:41,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2254 [2020-10-12 20:53:41,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:41,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:53:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:41,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:41,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:41,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:41,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:53:41,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662811055] [2020-10-12 20:53:41,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:41,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:41,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274433917] [2020-10-12 20:53:41,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:41,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:41,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:41,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:41,814 INFO L87 Difference]: Start difference. First operand 457 states and 722 transitions. Second operand 5 states. [2020-10-12 20:53:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:42,493 INFO L93 Difference]: Finished difference Result 894 states and 1421 transitions. [2020-10-12 20:53:42,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:42,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-12 20:53:42,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:42,496 INFO L225 Difference]: With dead ends: 894 [2020-10-12 20:53:42,496 INFO L226 Difference]: Without dead ends: 461 [2020-10-12 20:53:42,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-10-12 20:53:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 457. [2020-10-12 20:53:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-12 20:53:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 721 transitions. [2020-10-12 20:53:42,512 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 721 transitions. Word has length 84 [2020-10-12 20:53:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:42,513 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 721 transitions. [2020-10-12 20:53:42,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 721 transitions. [2020-10-12 20:53:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:53:42,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:42,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:42,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:53:42,516 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:42,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:42,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1569801065, now seen corresponding path program 1 times [2020-10-12 20:53:42,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:42,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84146997] [2020-10-12 20:53:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:53:43,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:43,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-12 20:53:43,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:53:43,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:43,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:43,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:43,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:43,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84146997] [2020-10-12 20:53:43,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:43,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:43,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974472381] [2020-10-12 20:53:43,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:43,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:43,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:43,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:43,242 INFO L87 Difference]: Start difference. First operand 457 states and 721 transitions. Second operand 5 states. [2020-10-12 20:53:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:44,149 INFO L93 Difference]: Finished difference Result 901 states and 1418 transitions. [2020-10-12 20:53:44,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:44,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:53:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:44,153 INFO L225 Difference]: With dead ends: 901 [2020-10-12 20:53:44,154 INFO L226 Difference]: Without dead ends: 647 [2020-10-12 20:53:44,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-12 20:53:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 540. [2020-10-12 20:53:44,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-12 20:53:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 874 transitions. [2020-10-12 20:53:44,172 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 874 transitions. Word has length 90 [2020-10-12 20:53:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:44,173 INFO L479 AbstractCegarLoop]: Abstraction has 540 states and 874 transitions. [2020-10-12 20:53:44,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 874 transitions. [2020-10-12 20:53:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:53:44,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:44,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:44,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:53:44,175 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1827772953, now seen corresponding path program 1 times [2020-10-12 20:53:44,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:44,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939057015] [2020-10-12 20:53:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:44,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:53:44,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-12 20:53:44,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:53:44,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:44,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:44,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939057015] [2020-10-12 20:53:44,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:44,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:44,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617108731] [2020-10-12 20:53:44,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:44,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:44,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:44,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:44,654 INFO L87 Difference]: Start difference. First operand 540 states and 874 transitions. Second operand 5 states. [2020-10-12 20:53:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:45,386 INFO L93 Difference]: Finished difference Result 1170 states and 1891 transitions. [2020-10-12 20:53:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:45,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:53:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:45,391 INFO L225 Difference]: With dead ends: 1170 [2020-10-12 20:53:45,392 INFO L226 Difference]: Without dead ends: 654 [2020-10-12 20:53:45,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-10-12 20:53:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 588. [2020-10-12 20:53:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2020-10-12 20:53:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 958 transitions. [2020-10-12 20:53:45,411 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 958 transitions. Word has length 90 [2020-10-12 20:53:45,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:45,411 INFO L479 AbstractCegarLoop]: Abstraction has 588 states and 958 transitions. [2020-10-12 20:53:45,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 958 transitions. [2020-10-12 20:53:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:53:45,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:45,413 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:45,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:53:45,414 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:45,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1022204551, now seen corresponding path program 1 times [2020-10-12 20:53:45,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:45,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678094612] [2020-10-12 20:53:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:50,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 20:53:50,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:50,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:53:50,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:53:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:53:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:50,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:50,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:50,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:50,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:50,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:50,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:50,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:53:50,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678094612] [2020-10-12 20:53:50,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:50,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:53:50,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616040083] [2020-10-12 20:53:50,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:53:50,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:50,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:53:50,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:53:50,799 INFO L87 Difference]: Start difference. First operand 588 states and 958 transitions. Second operand 9 states. [2020-10-12 20:53:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:52,933 INFO L93 Difference]: Finished difference Result 1530 states and 2490 transitions. [2020-10-12 20:53:52,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:53:52,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:53:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:52,942 INFO L225 Difference]: With dead ends: 1530 [2020-10-12 20:53:52,943 INFO L226 Difference]: Without dead ends: 1210 [2020-10-12 20:53:52,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:53:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-10-12 20:53:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 674. [2020-10-12 20:53:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-12 20:53:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1098 transitions. [2020-10-12 20:53:52,970 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1098 transitions. Word has length 96 [2020-10-12 20:53:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:52,970 INFO L479 AbstractCegarLoop]: Abstraction has 674 states and 1098 transitions. [2020-10-12 20:53:52,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:53:52,971 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1098 transitions. [2020-10-12 20:53:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:53:52,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:52,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:52,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:53:52,973 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:52,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:52,973 INFO L82 PathProgramCache]: Analyzing trace with hash -865693434, now seen corresponding path program 1 times [2020-10-12 20:53:52,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:52,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490034346] [2020-10-12 20:53:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:53,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:54,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 20:53:54,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-12 20:53:54,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:53:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:54,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:54,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:54,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:54,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:54,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:53:54,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490034346] [2020-10-12 20:53:54,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:54,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:54,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192586098] [2020-10-12 20:53:54,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:54,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:54,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:54,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:54,221 INFO L87 Difference]: Start difference. First operand 674 states and 1098 transitions. Second operand 5 states. [2020-10-12 20:53:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:54,819 INFO L93 Difference]: Finished difference Result 1362 states and 2217 transitions. [2020-10-12 20:53:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:54,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-12 20:53:54,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:54,824 INFO L225 Difference]: With dead ends: 1362 [2020-10-12 20:53:54,824 INFO L226 Difference]: Without dead ends: 712 [2020-10-12 20:53:54,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-12 20:53:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 674. [2020-10-12 20:53:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-12 20:53:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1096 transitions. [2020-10-12 20:53:54,849 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1096 transitions. Word has length 96 [2020-10-12 20:53:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:54,849 INFO L479 AbstractCegarLoop]: Abstraction has 674 states and 1096 transitions. [2020-10-12 20:53:54,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1096 transitions. [2020-10-12 20:53:54,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 20:53:54,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:54,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:54,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:53:54,851 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:54,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2103578083, now seen corresponding path program 1 times [2020-10-12 20:53:54,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:54,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484813391] [2020-10-12 20:53:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:55,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:56,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 20:53:56,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-12 20:53:56,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:53:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:53:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:56,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:56,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:56,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:56,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:53:56,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484813391] [2020-10-12 20:53:56,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:56,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:56,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875185493] [2020-10-12 20:53:56,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:56,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:56,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:56,340 INFO L87 Difference]: Start difference. First operand 674 states and 1096 transitions. Second operand 5 states. [2020-10-12 20:53:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:57,058 INFO L93 Difference]: Finished difference Result 1400 states and 2267 transitions. [2020-10-12 20:53:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:57,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-12 20:53:57,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:57,064 INFO L225 Difference]: With dead ends: 1400 [2020-10-12 20:53:57,065 INFO L226 Difference]: Without dead ends: 750 [2020-10-12 20:53:57,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-12 20:53:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 674. [2020-10-12 20:53:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-12 20:53:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1094 transitions. [2020-10-12 20:53:57,088 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1094 transitions. Word has length 97 [2020-10-12 20:53:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:57,089 INFO L479 AbstractCegarLoop]: Abstraction has 674 states and 1094 transitions. [2020-10-12 20:53:57,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1094 transitions. [2020-10-12 20:53:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 20:53:57,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:57,090 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:57,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:53:57,091 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:57,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:57,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1904783573, now seen corresponding path program 1 times [2020-10-12 20:53:57,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:57,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007811617] [2020-10-12 20:53:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:57,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:00,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:54:00,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3534 [2020-10-12 20:54:00,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 20:54:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:54:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:00,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:00,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:00,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:00,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:00,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:54:00,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007811617] [2020-10-12 20:54:00,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:00,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:00,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066281537] [2020-10-12 20:54:00,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:00,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:00,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:00,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:00,729 INFO L87 Difference]: Start difference. First operand 674 states and 1094 transitions. Second operand 5 states. [2020-10-12 20:54:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:01,589 INFO L93 Difference]: Finished difference Result 1513 states and 2451 transitions. [2020-10-12 20:54:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:01,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 20:54:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:01,597 INFO L225 Difference]: With dead ends: 1513 [2020-10-12 20:54:01,598 INFO L226 Difference]: Without dead ends: 863 [2020-10-12 20:54:01,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:01,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-12 20:54:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 679. [2020-10-12 20:54:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-12 20:54:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1100 transitions. [2020-10-12 20:54:01,626 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1100 transitions. Word has length 98 [2020-10-12 20:54:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:01,626 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 1100 transitions. [2020-10-12 20:54:01,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1100 transitions. [2020-10-12 20:54:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:54:01,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:01,629 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:01,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:54:01,632 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:01,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1270843244, now seen corresponding path program 1 times [2020-10-12 20:54:01,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:01,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875809759] [2020-10-12 20:54:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:01,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:02,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:04,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:54:04,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2720 [2020-10-12 20:54:04,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:54:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:54:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:04,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:04,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:04,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:04,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:04,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875809759] [2020-10-12 20:54:04,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:04,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:04,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597459158] [2020-10-12 20:54:04,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:04,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:04,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:04,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:04,437 INFO L87 Difference]: Start difference. First operand 679 states and 1100 transitions. Second operand 5 states. [2020-10-12 20:54:05,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:05,162 INFO L93 Difference]: Finished difference Result 1459 states and 2360 transitions. [2020-10-12 20:54:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:05,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:54:05,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:05,166 INFO L225 Difference]: With dead ends: 1459 [2020-10-12 20:54:05,166 INFO L226 Difference]: Without dead ends: 803 [2020-10-12 20:54:05,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-10-12 20:54:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 731. [2020-10-12 20:54:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-12 20:54:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1192 transitions. [2020-10-12 20:54:05,190 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1192 transitions. Word has length 104 [2020-10-12 20:54:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:05,190 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1192 transitions. [2020-10-12 20:54:05,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1192 transitions. [2020-10-12 20:54:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:54:05,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:05,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:05,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:54:05,192 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:05,193 INFO L82 PathProgramCache]: Analyzing trace with hash -30095817, now seen corresponding path program 1 times [2020-10-12 20:54:05,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:05,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463557587] [2020-10-12 20:54:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:10,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:54:10,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:54:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:54:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:54:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:10,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:10,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:10,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:10,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:54:10,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:10,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463557587] [2020-10-12 20:54:10,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:10,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:10,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017979916] [2020-10-12 20:54:10,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:10,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:10,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:10,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:10,312 INFO L87 Difference]: Start difference. First operand 731 states and 1192 transitions. Second operand 5 states. [2020-10-12 20:54:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:11,253 INFO L93 Difference]: Finished difference Result 1560 states and 2515 transitions. [2020-10-12 20:54:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:11,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:54:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:11,258 INFO L225 Difference]: With dead ends: 1560 [2020-10-12 20:54:11,258 INFO L226 Difference]: Without dead ends: 832 [2020-10-12 20:54:11,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-12 20:54:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 731. [2020-10-12 20:54:11,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-12 20:54:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1190 transitions. [2020-10-12 20:54:11,282 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1190 transitions. Word has length 104 [2020-10-12 20:54:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:11,283 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1190 transitions. [2020-10-12 20:54:11,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1190 transitions. [2020-10-12 20:54:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:54:11,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:11,284 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:11,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:54:11,285 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:11,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1230821433, now seen corresponding path program 1 times [2020-10-12 20:54:11,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:11,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989115586] [2020-10-12 20:54:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:11,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:16,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:16,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:54:16,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:54:16,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:54:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:54:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:16,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:16,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:16,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:16,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:16,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989115586] [2020-10-12 20:54:16,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:16,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:16,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753663911] [2020-10-12 20:54:16,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:16,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:16,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:16,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:16,378 INFO L87 Difference]: Start difference. First operand 731 states and 1190 transitions. Second operand 5 states. [2020-10-12 20:54:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:17,097 INFO L93 Difference]: Finished difference Result 1507 states and 2440 transitions. [2020-10-12 20:54:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:17,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:54:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:17,101 INFO L225 Difference]: With dead ends: 1507 [2020-10-12 20:54:17,101 INFO L226 Difference]: Without dead ends: 779 [2020-10-12 20:54:17,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-10-12 20:54:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 731. [2020-10-12 20:54:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-12 20:54:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1188 transitions. [2020-10-12 20:54:17,123 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1188 transitions. Word has length 104 [2020-10-12 20:54:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:17,123 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1188 transitions. [2020-10-12 20:54:17,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1188 transitions. [2020-10-12 20:54:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:54:17,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:17,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:17,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:54:17,125 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:17,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash -143788237, now seen corresponding path program 1 times [2020-10-12 20:54:17,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:17,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658472284] [2020-10-12 20:54:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:17,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:54:17,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:17,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-12 20:54:17,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:17,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:17,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:17,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:17,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:17,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:17,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:17,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:17,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658472284] [2020-10-12 20:54:17,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:17,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:17,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145938717] [2020-10-12 20:54:17,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:17,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:17,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:17,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:17,807 INFO L87 Difference]: Start difference. First operand 731 states and 1188 transitions. Second operand 5 states. [2020-10-12 20:54:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:18,695 INFO L93 Difference]: Finished difference Result 1538 states and 2479 transitions. [2020-10-12 20:54:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:18,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:54:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:18,701 INFO L225 Difference]: With dead ends: 1538 [2020-10-12 20:54:18,701 INFO L226 Difference]: Without dead ends: 830 [2020-10-12 20:54:18,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-10-12 20:54:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 731. [2020-10-12 20:54:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-12 20:54:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1186 transitions. [2020-10-12 20:54:18,722 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1186 transitions. Word has length 105 [2020-10-12 20:54:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:18,722 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1186 transitions. [2020-10-12 20:54:18,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1186 transitions. [2020-10-12 20:54:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:54:18,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:18,724 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:18,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:54:18,724 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:18,725 INFO L82 PathProgramCache]: Analyzing trace with hash 289940849, now seen corresponding path program 1 times [2020-10-12 20:54:18,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:18,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367180846] [2020-10-12 20:54:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:19,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:54:19,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-12 20:54:19,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:19,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:19,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:19,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:54:19,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:19,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:19,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367180846] [2020-10-12 20:54:19,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:19,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:19,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251164510] [2020-10-12 20:54:19,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:19,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:19,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:19,420 INFO L87 Difference]: Start difference. First operand 731 states and 1186 transitions. Second operand 5 states. [2020-10-12 20:54:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:20,131 INFO L93 Difference]: Finished difference Result 1485 states and 2404 transitions. [2020-10-12 20:54:20,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:20,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:54:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:20,137 INFO L225 Difference]: With dead ends: 1485 [2020-10-12 20:54:20,137 INFO L226 Difference]: Without dead ends: 777 [2020-10-12 20:54:20,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-10-12 20:54:20,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 731. [2020-10-12 20:54:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-12 20:54:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1184 transitions. [2020-10-12 20:54:20,156 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1184 transitions. Word has length 105 [2020-10-12 20:54:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:20,157 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1184 transitions. [2020-10-12 20:54:20,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1184 transitions. [2020-10-12 20:54:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 20:54:20,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:20,159 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:20,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:54:20,159 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:20,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:20,160 INFO L82 PathProgramCache]: Analyzing trace with hash 837436734, now seen corresponding path program 1 times [2020-10-12 20:54:20,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:20,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347795] [2020-10-12 20:54:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:22,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:22,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 20:54:22,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2545 [2020-10-12 20:54:22,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:54:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:54:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:22,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:22,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:22,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:54:22,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:54:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:54:22,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347795] [2020-10-12 20:54:22,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:22,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:22,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058722127] [2020-10-12 20:54:22,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:22,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:22,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:22,818 INFO L87 Difference]: Start difference. First operand 731 states and 1184 transitions. Second operand 5 states. [2020-10-12 20:54:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:23,552 INFO L93 Difference]: Finished difference Result 1515 states and 2444 transitions. [2020-10-12 20:54:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:23,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 20:54:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:23,556 INFO L225 Difference]: With dead ends: 1515 [2020-10-12 20:54:23,556 INFO L226 Difference]: Without dead ends: 807 [2020-10-12 20:54:23,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-10-12 20:54:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 731. [2020-10-12 20:54:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-12 20:54:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1182 transitions. [2020-10-12 20:54:23,576 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1182 transitions. Word has length 107 [2020-10-12 20:54:23,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:23,576 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1182 transitions. [2020-10-12 20:54:23,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1182 transitions. [2020-10-12 20:54:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:54:23,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:23,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-12 20:54:23,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:54:23,578 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:23,579 INFO L82 PathProgramCache]: Analyzing trace with hash 61246643, now seen corresponding path program 1 times [2020-10-12 20:54:23,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:23,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067346883] [2020-10-12 20:54:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:26,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:54:26,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2534 [2020-10-12 20:54:26,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 20:54:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:54:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:26,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:26,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:26,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:26,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:26,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:26,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:26,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067346883] [2020-10-12 20:54:26,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:26,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:26,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345466208] [2020-10-12 20:54:26,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:26,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:26,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:26,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:26,196 INFO L87 Difference]: Start difference. First operand 731 states and 1182 transitions. Second operand 5 states. [2020-10-12 20:54:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:26,986 INFO L93 Difference]: Finished difference Result 1591 states and 2570 transitions. [2020-10-12 20:54:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:26,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:54:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:26,990 INFO L225 Difference]: With dead ends: 1591 [2020-10-12 20:54:26,990 INFO L226 Difference]: Without dead ends: 883 [2020-10-12 20:54:26,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-10-12 20:54:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 791. [2020-10-12 20:54:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-12 20:54:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1290 transitions. [2020-10-12 20:54:27,011 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1290 transitions. Word has length 108 [2020-10-12 20:54:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:27,012 INFO L479 AbstractCegarLoop]: Abstraction has 791 states and 1290 transitions. [2020-10-12 20:54:27,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1290 transitions. [2020-10-12 20:54:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:54:27,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:27,014 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:27,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:54:27,014 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:27,014 INFO L82 PathProgramCache]: Analyzing trace with hash 966669641, now seen corresponding path program 1 times [2020-10-12 20:54:27,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:27,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712809711] [2020-10-12 20:54:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:29,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:29,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:54:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2930 [2020-10-12 20:54:29,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 20:54:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:54:29,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:30,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:30,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:30,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:30,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:30,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:30,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:30,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:30,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712809711] [2020-10-12 20:54:30,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:30,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:30,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632955611] [2020-10-12 20:54:30,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:30,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:30,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:30,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:30,033 INFO L87 Difference]: Start difference. First operand 791 states and 1290 transitions. Second operand 5 states. [2020-10-12 20:54:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:30,994 INFO L93 Difference]: Finished difference Result 1776 states and 2884 transitions. [2020-10-12 20:54:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:30,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:54:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:30,999 INFO L225 Difference]: With dead ends: 1776 [2020-10-12 20:54:30,999 INFO L226 Difference]: Without dead ends: 1008 [2020-10-12 20:54:31,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-10-12 20:54:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 827. [2020-10-12 20:54:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-10-12 20:54:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1352 transitions. [2020-10-12 20:54:31,018 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1352 transitions. Word has length 110 [2020-10-12 20:54:31,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:31,018 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 1352 transitions. [2020-10-12 20:54:31,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:31,018 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1352 transitions. [2020-10-12 20:54:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:54:31,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:31,020 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-12 20:54:31,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:54:31,020 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:31,020 INFO L82 PathProgramCache]: Analyzing trace with hash -105166869, now seen corresponding path program 1 times [2020-10-12 20:54:31,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:31,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154850187] [2020-10-12 20:54:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:33,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:33,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:54:33,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:33,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2857 [2020-10-12 20:54:33,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 20:54:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:54:33,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:33,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:33,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:33,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:33,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154850187] [2020-10-12 20:54:33,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:33,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:33,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848211456] [2020-10-12 20:54:33,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:33,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:33,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:33,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:33,972 INFO L87 Difference]: Start difference. First operand 827 states and 1352 transitions. Second operand 5 states. [2020-10-12 20:54:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:34,769 INFO L93 Difference]: Finished difference Result 1739 states and 2836 transitions. [2020-10-12 20:54:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:34,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:54:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:34,775 INFO L225 Difference]: With dead ends: 1739 [2020-10-12 20:54:34,775 INFO L226 Difference]: Without dead ends: 935 [2020-10-12 20:54:34,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-10-12 20:54:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 847. [2020-10-12 20:54:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-10-12 20:54:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1390 transitions. [2020-10-12 20:54:34,801 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1390 transitions. Word has length 111 [2020-10-12 20:54:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:34,801 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1390 transitions. [2020-10-12 20:54:34,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1390 transitions. [2020-10-12 20:54:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:54:34,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:34,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:34,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:54:34,803 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:34,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:34,803 INFO L82 PathProgramCache]: Analyzing trace with hash -733041866, now seen corresponding path program 1 times [2020-10-12 20:54:34,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:34,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121098121] [2020-10-12 20:54:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:38,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:54:38,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3210 [2020-10-12 20:54:38,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:54:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 20:54:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:38,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:38,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:38,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:38,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:38,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:54:38,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121098121] [2020-10-12 20:54:38,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:38,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:54:38,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141090482] [2020-10-12 20:54:38,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:54:38,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:38,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:54:38,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:54:38,184 INFO L87 Difference]: Start difference. First operand 847 states and 1390 transitions. Second operand 9 states. [2020-10-12 20:54:40,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:40,730 INFO L93 Difference]: Finished difference Result 2579 states and 4240 transitions. [2020-10-12 20:54:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:54:40,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-10-12 20:54:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:40,737 INFO L225 Difference]: With dead ends: 2579 [2020-10-12 20:54:40,737 INFO L226 Difference]: Without dead ends: 1755 [2020-10-12 20:54:40,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:54:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2020-10-12 20:54:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1567. [2020-10-12 20:54:40,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-10-12 20:54:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2619 transitions. [2020-10-12 20:54:40,778 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2619 transitions. Word has length 111 [2020-10-12 20:54:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:40,778 INFO L479 AbstractCegarLoop]: Abstraction has 1567 states and 2619 transitions. [2020-10-12 20:54:40,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:54:40,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2619 transitions. [2020-10-12 20:54:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:54:40,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:40,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:40,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:54:40,783 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:40,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1256616034, now seen corresponding path program 1 times [2020-10-12 20:54:40,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:40,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171679439] [2020-10-12 20:54:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:43,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:54:43,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2863 [2020-10-12 20:54:43,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:54:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 20:54:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:43,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:43,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:43,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:43,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:54:43,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171679439] [2020-10-12 20:54:43,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:43,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:54:43,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187010960] [2020-10-12 20:54:43,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:54:43,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:43,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:54:43,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:54:43,821 INFO L87 Difference]: Start difference. First operand 1567 states and 2619 transitions. Second operand 9 states. [2020-10-12 20:54:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:46,417 INFO L93 Difference]: Finished difference Result 3292 states and 5461 transitions. [2020-10-12 20:54:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:54:46,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-10-12 20:54:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:46,424 INFO L225 Difference]: With dead ends: 3292 [2020-10-12 20:54:46,424 INFO L226 Difference]: Without dead ends: 1748 [2020-10-12 20:54:46,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:54:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-12 20:54:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1591. [2020-10-12 20:54:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-10-12 20:54:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2666 transitions. [2020-10-12 20:54:46,465 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2666 transitions. Word has length 112 [2020-10-12 20:54:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:46,465 INFO L479 AbstractCegarLoop]: Abstraction has 1591 states and 2666 transitions. [2020-10-12 20:54:46,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:54:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2666 transitions. [2020-10-12 20:54:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:54:46,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:46,468 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:46,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:54:46,469 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:46,469 INFO L82 PathProgramCache]: Analyzing trace with hash 686639890, now seen corresponding path program 1 times [2020-10-12 20:54:46,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:46,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230916330] [2020-10-12 20:54:46,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:46,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:51,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:54:51,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 20:54:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 20:54:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 20:54:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:51,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:51,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230916330] [2020-10-12 20:54:51,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:51,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:54:51,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802537324] [2020-10-12 20:54:51,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:54:51,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:51,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:54:51,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:54:51,644 INFO L87 Difference]: Start difference. First operand 1591 states and 2666 transitions. Second operand 8 states. [2020-10-12 20:54:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:53,285 INFO L93 Difference]: Finished difference Result 3402 states and 5651 transitions. [2020-10-12 20:54:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:54:53,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-12 20:54:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:53,295 INFO L225 Difference]: With dead ends: 3402 [2020-10-12 20:54:53,295 INFO L226 Difference]: Without dead ends: 1836 [2020-10-12 20:54:53,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:54:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2020-10-12 20:54:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1619. [2020-10-12 20:54:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-10-12 20:54:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2717 transitions. [2020-10-12 20:54:53,341 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2717 transitions. Word has length 113 [2020-10-12 20:54:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:53,341 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 2717 transitions. [2020-10-12 20:54:53,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:54:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2717 transitions. [2020-10-12 20:54:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 20:54:53,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:53,343 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:53,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:54:53,344 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash 582697844, now seen corresponding path program 1 times [2020-10-12 20:54:53,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:53,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313992949] [2020-10-12 20:54:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:53,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:54:58,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:54:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:54:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:58,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:58,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313992949] [2020-10-12 20:54:58,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:58,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:58,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844645269] [2020-10-12 20:54:58,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:58,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:58,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:58,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:58,443 INFO L87 Difference]: Start difference. First operand 1619 states and 2717 transitions. Second operand 5 states. [2020-10-12 20:54:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:59,329 INFO L93 Difference]: Finished difference Result 2545 states and 4213 transitions. [2020-10-12 20:54:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:59,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-12 20:54:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:59,347 INFO L225 Difference]: With dead ends: 2545 [2020-10-12 20:54:59,347 INFO L226 Difference]: Without dead ends: 1701 [2020-10-12 20:54:59,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-10-12 20:54:59,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1619. [2020-10-12 20:54:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-10-12 20:54:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2713 transitions. [2020-10-12 20:54:59,398 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2713 transitions. Word has length 118 [2020-10-12 20:54:59,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:59,398 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 2713 transitions. [2020-10-12 20:54:59,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2713 transitions. [2020-10-12 20:54:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:54:59,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:59,402 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:59,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:54:59,402 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:59,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:59,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1672946070, now seen corresponding path program 1 times [2020-10-12 20:54:59,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:59,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45562806] [2020-10-12 20:54:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:03,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:03,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:55:03,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:03,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4231 [2020-10-12 20:55:03,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 20:55:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:55:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:03,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:03,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:03,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:03,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-12 20:55:03,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45562806] [2020-10-12 20:55:03,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:03,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:03,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468308256] [2020-10-12 20:55:03,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:03,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:03,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:03,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:03,737 INFO L87 Difference]: Start difference. First operand 1619 states and 2713 transitions. Second operand 5 states. [2020-10-12 20:55:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:04,734 INFO L93 Difference]: Finished difference Result 3388 states and 5629 transitions. [2020-10-12 20:55:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:04,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:55:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:04,739 INFO L225 Difference]: With dead ends: 3388 [2020-10-12 20:55:04,739 INFO L226 Difference]: Without dead ends: 1788 [2020-10-12 20:55:04,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2020-10-12 20:55:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1588. [2020-10-12 20:55:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2654 transitions. [2020-10-12 20:55:04,773 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2654 transitions. Word has length 119 [2020-10-12 20:55:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:04,773 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2654 transitions. [2020-10-12 20:55:04,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2654 transitions. [2020-10-12 20:55:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:55:04,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:04,776 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 20:55:04,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:55:04,776 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:04,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:04,776 INFO L82 PathProgramCache]: Analyzing trace with hash 660605062, now seen corresponding path program 1 times [2020-10-12 20:55:04,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:04,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037685362] [2020-10-12 20:55:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:04,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:05,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:55:05,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-12 20:55:05,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:55:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:05,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:05,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:05,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:05,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037685362] [2020-10-12 20:55:05,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:05,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:05,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890065995] [2020-10-12 20:55:05,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:05,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:05,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:05,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:05,227 INFO L87 Difference]: Start difference. First operand 1588 states and 2654 transitions. Second operand 5 states. [2020-10-12 20:55:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:06,220 INFO L93 Difference]: Finished difference Result 3311 states and 5492 transitions. [2020-10-12 20:55:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:06,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:55:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:06,223 INFO L225 Difference]: With dead ends: 3311 [2020-10-12 20:55:06,224 INFO L226 Difference]: Without dead ends: 1748 [2020-10-12 20:55:06,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-12 20:55:06,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1588. [2020-10-12 20:55:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2650 transitions. [2020-10-12 20:55:06,257 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2650 transitions. Word has length 119 [2020-10-12 20:55:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:06,257 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2650 transitions. [2020-10-12 20:55:06,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2650 transitions. [2020-10-12 20:55:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:55:06,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:06,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 20:55:06,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:55:06,261 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:06,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:06,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1834113576, now seen corresponding path program 1 times [2020-10-12 20:55:06,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:06,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609683949] [2020-10-12 20:55:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:07,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:55:07,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1384 [2020-10-12 20:55:07,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:55:07,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:07,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:07,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609683949] [2020-10-12 20:55:07,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:07,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:07,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123149186] [2020-10-12 20:55:07,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:07,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:07,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:07,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:07,763 INFO L87 Difference]: Start difference. First operand 1588 states and 2650 transitions. Second operand 5 states. [2020-10-12 20:55:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:08,747 INFO L93 Difference]: Finished difference Result 3311 states and 5484 transitions. [2020-10-12 20:55:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:08,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:55:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:08,752 INFO L225 Difference]: With dead ends: 3311 [2020-10-12 20:55:08,752 INFO L226 Difference]: Without dead ends: 1748 [2020-10-12 20:55:08,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-12 20:55:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1588. [2020-10-12 20:55:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2646 transitions. [2020-10-12 20:55:08,802 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2646 transitions. Word has length 121 [2020-10-12 20:55:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:08,803 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2646 transitions. [2020-10-12 20:55:08,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2646 transitions. [2020-10-12 20:55:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:55:08,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:08,806 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-12 20:55:08,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:55:08,807 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:08,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:08,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1920977581, now seen corresponding path program 1 times [2020-10-12 20:55:08,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:08,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295552416] [2020-10-12 20:55:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:13,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:55:13,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:55:13,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:55:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 20:55:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:13,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:13,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:13,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:13,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:13,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:55:13,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295552416] [2020-10-12 20:55:13,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:13,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:13,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440020184] [2020-10-12 20:55:13,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:13,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:13,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:13,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:13,926 INFO L87 Difference]: Start difference. First operand 1588 states and 2646 transitions. Second operand 5 states. [2020-10-12 20:55:14,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:14,866 INFO L93 Difference]: Finished difference Result 2547 states and 4186 transitions. [2020-10-12 20:55:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:14,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:55:14,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:14,871 INFO L225 Difference]: With dead ends: 2547 [2020-10-12 20:55:14,871 INFO L226 Difference]: Without dead ends: 1707 [2020-10-12 20:55:14,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-10-12 20:55:14,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1588. [2020-10-12 20:55:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2642 transitions. [2020-10-12 20:55:14,920 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2642 transitions. Word has length 122 [2020-10-12 20:55:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:14,920 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2642 transitions. [2020-10-12 20:55:14,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2642 transitions. [2020-10-12 20:55:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:55:14,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:14,924 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:14,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:55:14,924 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:14,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:14,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1613261779, now seen corresponding path program 1 times [2020-10-12 20:55:14,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:14,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095785720] [2020-10-12 20:55:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:16,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:55:16,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:16,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-12 20:55:16,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:55:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:16,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:16,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:16,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:16,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:16,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:16,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:16,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095785720] [2020-10-12 20:55:16,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:16,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:16,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521739676] [2020-10-12 20:55:16,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:16,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:16,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:16,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:16,508 INFO L87 Difference]: Start difference. First operand 1588 states and 2642 transitions. Second operand 5 states. [2020-10-12 20:55:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:17,485 INFO L93 Difference]: Finished difference Result 3311 states and 5468 transitions. [2020-10-12 20:55:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:17,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:55:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:17,490 INFO L225 Difference]: With dead ends: 3311 [2020-10-12 20:55:17,491 INFO L226 Difference]: Without dead ends: 1748 [2020-10-12 20:55:17,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-12 20:55:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1588. [2020-10-12 20:55:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2638 transitions. [2020-10-12 20:55:17,544 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2638 transitions. Word has length 122 [2020-10-12 20:55:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:17,544 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2638 transitions. [2020-10-12 20:55:17,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2638 transitions. [2020-10-12 20:55:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:55:17,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:17,547 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:17,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:55:17,548 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:17,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:17,548 INFO L82 PathProgramCache]: Analyzing trace with hash -171800446, now seen corresponding path program 1 times [2020-10-12 20:55:17,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:17,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934059224] [2020-10-12 20:55:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:18,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:18,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:55:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-12 20:55:18,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:55:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:18,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:18,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:18,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:18,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:19,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934059224] [2020-10-12 20:55:19,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:19,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:19,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21286668] [2020-10-12 20:55:19,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:19,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:19,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:19,015 INFO L87 Difference]: Start difference. First operand 1588 states and 2638 transitions. Second operand 5 states. [2020-10-12 20:55:20,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:20,024 INFO L93 Difference]: Finished difference Result 3295 states and 5440 transitions. [2020-10-12 20:55:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:20,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:55:20,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:20,028 INFO L225 Difference]: With dead ends: 3295 [2020-10-12 20:55:20,028 INFO L226 Difference]: Without dead ends: 1732 [2020-10-12 20:55:20,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-10-12 20:55:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1588. [2020-10-12 20:55:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2634 transitions. [2020-10-12 20:55:20,078 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2634 transitions. Word has length 122 [2020-10-12 20:55:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:20,078 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2634 transitions. [2020-10-12 20:55:20,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2634 transitions. [2020-10-12 20:55:20,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:55:20,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:20,081 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:20,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:55:20,081 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:20,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1182800871, now seen corresponding path program 1 times [2020-10-12 20:55:20,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:20,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429779274] [2020-10-12 20:55:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:20,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:21,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:55:21,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:21,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1224 [2020-10-12 20:55:21,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:55:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:21,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:21,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:21,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:21,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429779274] [2020-10-12 20:55:21,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:21,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:21,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424265232] [2020-10-12 20:55:21,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:21,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:21,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:21,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:21,409 INFO L87 Difference]: Start difference. First operand 1588 states and 2634 transitions. Second operand 5 states. [2020-10-12 20:55:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:22,366 INFO L93 Difference]: Finished difference Result 3287 states and 5424 transitions. [2020-10-12 20:55:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:22,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:55:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:22,369 INFO L225 Difference]: With dead ends: 3287 [2020-10-12 20:55:22,369 INFO L226 Difference]: Without dead ends: 1724 [2020-10-12 20:55:22,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2020-10-12 20:55:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1588. [2020-10-12 20:55:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2630 transitions. [2020-10-12 20:55:22,419 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2630 transitions. Word has length 123 [2020-10-12 20:55:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:22,420 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2630 transitions. [2020-10-12 20:55:22,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2630 transitions. [2020-10-12 20:55:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:55:22,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:22,423 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-12 20:55:22,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:55:22,424 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:22,424 INFO L82 PathProgramCache]: Analyzing trace with hash 729948009, now seen corresponding path program 1 times [2020-10-12 20:55:22,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:22,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643476865] [2020-10-12 20:55:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:27,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:55:27,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:55:27,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:55:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 20:55:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:27,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:27,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:27,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:27,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:27,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:27,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:55:27,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643476865] [2020-10-12 20:55:27,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:27,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:27,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306083677] [2020-10-12 20:55:27,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:27,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:27,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:27,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:27,534 INFO L87 Difference]: Start difference. First operand 1588 states and 2630 transitions. Second operand 5 states. [2020-10-12 20:55:28,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:28,425 INFO L93 Difference]: Finished difference Result 2541 states and 4156 transitions. [2020-10-12 20:55:28,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:28,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:55:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:28,428 INFO L225 Difference]: With dead ends: 2541 [2020-10-12 20:55:28,428 INFO L226 Difference]: Without dead ends: 1701 [2020-10-12 20:55:28,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:28,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-10-12 20:55:28,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1588. [2020-10-12 20:55:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2626 transitions. [2020-10-12 20:55:28,461 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2626 transitions. Word has length 124 [2020-10-12 20:55:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:28,461 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2626 transitions. [2020-10-12 20:55:28,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2626 transitions. [2020-10-12 20:55:28,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:55:28,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:28,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:28,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:55:28,464 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:28,464 INFO L82 PathProgramCache]: Analyzing trace with hash -767295858, now seen corresponding path program 1 times [2020-10-12 20:55:28,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:28,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807680235] [2020-10-12 20:55:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:55:29,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-12 20:55:29,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:55:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:29,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:29,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:29,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807680235] [2020-10-12 20:55:29,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:29,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:29,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942826289] [2020-10-12 20:55:29,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:29,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:29,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:29,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:29,663 INFO L87 Difference]: Start difference. First operand 1588 states and 2626 transitions. Second operand 5 states. [2020-10-12 20:55:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:30,610 INFO L93 Difference]: Finished difference Result 3287 states and 5408 transitions. [2020-10-12 20:55:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:30,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:55:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:30,614 INFO L225 Difference]: With dead ends: 3287 [2020-10-12 20:55:30,614 INFO L226 Difference]: Without dead ends: 1724 [2020-10-12 20:55:30,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2020-10-12 20:55:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1588. [2020-10-12 20:55:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-12 20:55:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2622 transitions. [2020-10-12 20:55:30,650 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2622 transitions. Word has length 124 [2020-10-12 20:55:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:30,650 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2622 transitions. [2020-10-12 20:55:30,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2622 transitions. [2020-10-12 20:55:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:30,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:30,652 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:30,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:55:30,653 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:30,653 INFO L82 PathProgramCache]: Analyzing trace with hash -243352134, now seen corresponding path program 1 times [2020-10-12 20:55:30,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:30,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024016567] [2020-10-12 20:55:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:30,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:30,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:35,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:35,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:35,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:55:35,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:55:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 20:55:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:35,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:35,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:35,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:35,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:35,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:35,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:35,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:55:35,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024016567] [2020-10-12 20:55:35,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:35,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:55:35,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39037712] [2020-10-12 20:55:35,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:55:35,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:35,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:55:35,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:55:35,908 INFO L87 Difference]: Start difference. First operand 1588 states and 2622 transitions. Second operand 10 states. [2020-10-12 20:55:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:38,204 INFO L93 Difference]: Finished difference Result 3597 states and 5927 transitions. [2020-10-12 20:55:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:55:38,204 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2020-10-12 20:55:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:38,208 INFO L225 Difference]: With dead ends: 3597 [2020-10-12 20:55:38,208 INFO L226 Difference]: Without dead ends: 2034 [2020-10-12 20:55:38,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:55:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2020-10-12 20:55:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1937. [2020-10-12 20:55:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2020-10-12 20:55:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3212 transitions. [2020-10-12 20:55:38,252 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3212 transitions. Word has length 125 [2020-10-12 20:55:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:38,252 INFO L479 AbstractCegarLoop]: Abstraction has 1937 states and 3212 transitions. [2020-10-12 20:55:38,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:55:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3212 transitions. [2020-10-12 20:55:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:38,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:38,255 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:38,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:55:38,255 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:38,255 INFO L82 PathProgramCache]: Analyzing trace with hash -907857258, now seen corresponding path program 1 times [2020-10-12 20:55:38,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:38,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265822665] [2020-10-12 20:55:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:43,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:43,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:55:43,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:55:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:55:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:43,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:43,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:43,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:43,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:43,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 56 proven. 38 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:55:43,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265822665] [2020-10-12 20:55:43,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:43,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:43,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360605540] [2020-10-12 20:55:43,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:43,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:43,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:43,494 INFO L87 Difference]: Start difference. First operand 1937 states and 3212 transitions. Second operand 9 states. [2020-10-12 20:55:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:45,695 INFO L93 Difference]: Finished difference Result 3214 states and 5274 transitions. [2020-10-12 20:55:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:55:45,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2020-10-12 20:55:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:45,698 INFO L225 Difference]: With dead ends: 3214 [2020-10-12 20:55:45,699 INFO L226 Difference]: Without dead ends: 2035 [2020-10-12 20:55:45,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:55:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2020-10-12 20:55:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1937. [2020-10-12 20:55:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2020-10-12 20:55:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3211 transitions. [2020-10-12 20:55:45,742 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3211 transitions. Word has length 125 [2020-10-12 20:55:45,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:45,743 INFO L479 AbstractCegarLoop]: Abstraction has 1937 states and 3211 transitions. [2020-10-12 20:55:45,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:45,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3211 transitions. [2020-10-12 20:55:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:45,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:45,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:45,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:55:45,746 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:45,746 INFO L82 PathProgramCache]: Analyzing trace with hash 123754676, now seen corresponding path program 1 times [2020-10-12 20:55:45,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:45,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562216788] [2020-10-12 20:55:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:47,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:47,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1259 [2020-10-12 20:55:47,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:55:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:47,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:47,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:47,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:47,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:47,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:47,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:47,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562216788] [2020-10-12 20:55:47,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:47,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:47,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882560753] [2020-10-12 20:55:47,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:47,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:47,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:47,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:47,116 INFO L87 Difference]: Start difference. First operand 1937 states and 3211 transitions. Second operand 5 states. [2020-10-12 20:55:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:48,083 INFO L93 Difference]: Finished difference Result 4000 states and 6604 transitions. [2020-10-12 20:55:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:48,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 20:55:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:48,086 INFO L225 Difference]: With dead ends: 4000 [2020-10-12 20:55:48,086 INFO L226 Difference]: Without dead ends: 2088 [2020-10-12 20:55:48,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2020-10-12 20:55:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1937. [2020-10-12 20:55:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2020-10-12 20:55:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3206 transitions. [2020-10-12 20:55:48,127 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3206 transitions. Word has length 125 [2020-10-12 20:55:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:48,128 INFO L479 AbstractCegarLoop]: Abstraction has 1937 states and 3206 transitions. [2020-10-12 20:55:48,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:48,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3206 transitions. [2020-10-12 20:55:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:55:48,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:48,130 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-12 20:55:48,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:55:48,130 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:48,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:48,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1167930218, now seen corresponding path program 1 times [2020-10-12 20:55:48,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:48,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911459688] [2020-10-12 20:55:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:53,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:55:53,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 20:55:53,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:55:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:55:53,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:53,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:53,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:53,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:53,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 20:55:53,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911459688] [2020-10-12 20:55:53,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:53,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:53,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034623726] [2020-10-12 20:55:53,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:53,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:53,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:53,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:53,445 INFO L87 Difference]: Start difference. First operand 1937 states and 3206 transitions. Second operand 9 states. [2020-10-12 20:55:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:55,440 INFO L93 Difference]: Finished difference Result 3361 states and 5507 transitions. [2020-10-12 20:55:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:55:55,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-10-12 20:55:55,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:55,444 INFO L225 Difference]: With dead ends: 3361 [2020-10-12 20:55:55,444 INFO L226 Difference]: Without dead ends: 2192 [2020-10-12 20:55:55,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:55:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2020-10-12 20:55:55,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1965. [2020-10-12 20:55:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-12 20:55:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3257 transitions. [2020-10-12 20:55:55,485 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3257 transitions. Word has length 127 [2020-10-12 20:55:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:55,485 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 3257 transitions. [2020-10-12 20:55:55,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:55,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3257 transitions. [2020-10-12 20:55:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:55:55,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:55,488 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-12 20:55:55,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:55:55,489 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:55,489 INFO L82 PathProgramCache]: Analyzing trace with hash 831447410, now seen corresponding path program 1 times [2020-10-12 20:55:55,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:55,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466033343] [2020-10-12 20:55:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:56:00,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:56:00,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:56:00,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 20:56:00,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:56:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:00,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:00,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:00,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:56:00,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466033343] [2020-10-12 20:56:00,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:00,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:00,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342466765] [2020-10-12 20:56:00,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:00,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:00,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:00,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:00,619 INFO L87 Difference]: Start difference. First operand 1965 states and 3257 transitions. Second operand 5 states. [2020-10-12 20:56:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:01,681 INFO L93 Difference]: Finished difference Result 3478 states and 5712 transitions. [2020-10-12 20:56:01,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:01,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 20:56:01,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:01,686 INFO L225 Difference]: With dead ends: 3478 [2020-10-12 20:56:01,686 INFO L226 Difference]: Without dead ends: 2261 [2020-10-12 20:56:01,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-12 20:56:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2010. [2020-10-12 20:56:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-12 20:56:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3329 transitions. [2020-10-12 20:56:01,730 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3329 transitions. Word has length 127 [2020-10-12 20:56:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:01,730 INFO L479 AbstractCegarLoop]: Abstraction has 2010 states and 3329 transitions. [2020-10-12 20:56:01,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3329 transitions. [2020-10-12 20:56:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 20:56:01,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:01,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:01,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:56:01,733 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:01,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:01,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1582511799, now seen corresponding path program 1 times [2020-10-12 20:56:01,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:01,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301274209] [2020-10-12 20:56:01,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 20:56:01,763 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 20:56:01,763 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 20:56:01,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:56:01,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:56:01 BoogieIcfgContainer [2020-10-12 20:56:01,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 20:56:01,807 INFO L168 Benchmark]: Toolchain (without parser) took 213172.29 ms. Allocated memory was 137.9 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 98.8 MB in the beginning and 168.2 MB in the end (delta: -69.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2020-10-12 20:56:01,807 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 20:56:01,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 928.16 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.5 MB in the beginning and 159.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-10-12 20:56:01,808 INFO L168 Benchmark]: Boogie Preprocessor took 263.40 ms. Allocated memory is still 201.9 MB. Free memory was 159.2 MB in the beginning and 152.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2020-10-12 20:56:01,809 INFO L168 Benchmark]: RCFGBuilder took 1478.99 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 152.0 MB in the beginning and 170.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2020-10-12 20:56:01,809 INFO L168 Benchmark]: TraceAbstraction took 210497.01 ms. Allocated memory was 231.7 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 170.3 MB in the beginning and 168.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2020-10-12 20:56:01,811 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 928.16 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.5 MB in the beginning and 159.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 263.40 ms. Allocated memory is still 201.9 MB. Free memory was 159.2 MB in the beginning and 152.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1478.99 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 152.0 MB in the beginning and 170.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210497.01 ms. Allocated memory was 231.7 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 170.3 MB in the beginning and 168.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1702]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1121. Possible FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_server_data ; [L1065] SSL *s ; [L1066] int tmp ; [L1070] s = malloc(sizeof(SSL)) [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 8464 [L1075] CALL ssl3_accept(s) [L1081] BUF_MEM *buf ; [L1082] unsigned long l ; [L1083] unsigned long Time ; [L1084] unsigned long tmp ; [L1085] void (*cb)() ; [L1086] long num1 ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int got_new_session ; [L1092] int tmp___1 = __VERIFIER_nondet_int() ; [L1093] int tmp___2 = __VERIFIER_nondet_int() ; [L1094] int tmp___3 = __VERIFIER_nondet_int() ; [L1095] int tmp___4 = __VERIFIER_nondet_int() ; [L1096] int tmp___5 = __VERIFIER_nondet_int() ; [L1097] int tmp___6 = __VERIFIER_nondet_int() ; [L1098] int tmp___7 ; [L1099] long tmp___8 = __VERIFIER_nondet_long() ; [L1100] int tmp___9 = __VERIFIER_nondet_int() ; [L1101] int tmp___10 = __VERIFIER_nondet_int() ; [L1102] int blastFlag ; [L1106] blastFlag = 0 [L1107] s->hit=__VERIFIER_nondet_int () [L1108] s->state = 8464 [L1109] tmp = __VERIFIER_nondet_int() [L1110] Time = tmp [L1111] cb = (void (*)())((void *)0) [L1112] ret = -1 [L1113] skip = 0 [L1114] got_new_session = 0 [L1115] EXPR s->info_callback [L1115] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1116] EXPR s->info_callback [L1116] cb = s->info_callback [L1120] EXPR s->in_handshake [L1120] s->in_handshake += 1 [L1121] COND FALSE !(tmp___1 & 12288) [L1130] EXPR s->cert [L1130] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND TRUE s->state == 8464 [L1323] s->shutdown = 0 [L1324] ret = __VERIFIER_nondet_int() [L1325] COND TRUE blastFlag == 0 [L1326] blastFlag = 1 [L1330] COND FALSE !(ret <= 0) [L1335] got_new_session = 1 [L1336] s->state = 8496 [L1337] s->init_num = 0 [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND TRUE s->state == 8496 [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 1 [L1343] blastFlag = 2 [L1347] COND FALSE !(ret <= 0) [L1352] s->hit [L1352] COND TRUE s->hit [L1353] s->state = 8656 [L1357] s->init_num = 0 [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND FALSE !(s->state == 8512) [L1181] EXPR s->state [L1181] COND FALSE !(s->state == 8513) [L1184] EXPR s->state [L1184] COND FALSE !(s->state == 8528) [L1187] EXPR s->state [L1187] COND FALSE !(s->state == 8529) [L1190] EXPR s->state [L1190] COND FALSE !(s->state == 8544) [L1193] EXPR s->state [L1193] COND FALSE !(s->state == 8545) [L1196] EXPR s->state [L1196] COND FALSE !(s->state == 8560) [L1199] EXPR s->state [L1199] COND FALSE !(s->state == 8561) [L1202] EXPR s->state [L1202] COND FALSE !(s->state == 8448) [L1205] EXPR s->state [L1205] COND FALSE !(s->state == 8576) [L1208] EXPR s->state [L1208] COND FALSE !(s->state == 8577) [L1211] EXPR s->state [L1211] COND FALSE !(s->state == 8592) [L1214] EXPR s->state [L1214] COND FALSE !(s->state == 8593) [L1217] EXPR s->state [L1217] COND FALSE !(s->state == 8608) [L1220] EXPR s->state [L1220] COND FALSE !(s->state == 8609) [L1223] EXPR s->state [L1223] COND FALSE !(s->state == 8640) [L1226] EXPR s->state [L1226] COND FALSE !(s->state == 8641) [L1229] EXPR s->state [L1229] COND TRUE s->state == 8656 [L1550] EXPR s->session [L1550] EXPR s->s3 [L1550] EXPR (s->s3)->tmp.new_cipher [L1550] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1551] COND FALSE !(! tmp___9) [L1557] ret = __VERIFIER_nondet_int() [L1558] COND TRUE blastFlag == 2 [L1559] blastFlag = 4 [L1567] COND FALSE !(ret <= 0) [L1572] s->state = 8672 [L1573] s->init_num = 0 [L1574] COND FALSE !(! tmp___10) [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND FALSE !(s->state == 8512) [L1181] EXPR s->state [L1181] COND FALSE !(s->state == 8513) [L1184] EXPR s->state [L1184] COND FALSE !(s->state == 8528) [L1187] EXPR s->state [L1187] COND FALSE !(s->state == 8529) [L1190] EXPR s->state [L1190] COND FALSE !(s->state == 8544) [L1193] EXPR s->state [L1193] COND FALSE !(s->state == 8545) [L1196] EXPR s->state [L1196] COND FALSE !(s->state == 8560) [L1199] EXPR s->state [L1199] COND FALSE !(s->state == 8561) [L1202] EXPR s->state [L1202] COND FALSE !(s->state == 8448) [L1205] EXPR s->state [L1205] COND FALSE !(s->state == 8576) [L1208] EXPR s->state [L1208] COND FALSE !(s->state == 8577) [L1211] EXPR s->state [L1211] COND FALSE !(s->state == 8592) [L1214] EXPR s->state [L1214] COND FALSE !(s->state == 8593) [L1217] EXPR s->state [L1217] COND FALSE !(s->state == 8608) [L1220] EXPR s->state [L1220] COND FALSE !(s->state == 8609) [L1223] EXPR s->state [L1223] COND FALSE !(s->state == 8640) [L1226] EXPR s->state [L1226] COND FALSE !(s->state == 8641) [L1229] EXPR s->state [L1229] COND FALSE !(s->state == 8656) [L1232] EXPR s->state [L1232] COND FALSE !(s->state == 8657) [L1235] EXPR s->state [L1235] COND TRUE s->state == 8672 [L1583] ret = __VERIFIER_nondet_int() [L1584] COND TRUE blastFlag == 4 [L1702] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 180 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 210.3s, OverallIterations: 53, TraceHistogramMax: 5, AutomataDifference: 54.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10740 SDtfs, 5677 SDslu, 21112 SDs, 0 SdLazy, 32213 SolverSat, 1381 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 544 GetRequests, 204 SyntacticMatches, 60 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2010occurred in iteration=52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 52 MinimizatonAttempts, 5440 StatesRemovedByMinimization, 52 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 152.5s InterpolantComputationTime, 5246 NumberOfCodeBlocks, 5246 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 5063 ConstructedInterpolants, 0 QuantifiedInterpolants, 2717735 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 52 InterpolantComputations, 43 PerfectInterpolantSequences, 2552/3023 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...