/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.11.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:55:40,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:55:40,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:55:40,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:55:40,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:55:40,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:55:40,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:55:40,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:55:40,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:55:40,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:55:40,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:55:40,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:55:40,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:55:40,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:55:40,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:55:40,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:55:40,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:55:40,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:55:40,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:55:40,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:55:40,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:55:40,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:55:40,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:55:40,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:55:40,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:55:40,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:55:40,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:55:40,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:55:40,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:55:40,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:55:40,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:55:40,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:55:40,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:55:40,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:55:40,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:55:40,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:55:40,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:55:40,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:55:40,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:55:40,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:55:40,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:55:40,627 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 20:55:40,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:55:40,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:55:40,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:55:40,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:55:40,680 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:55:40,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:55:40,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:55:40,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:55:40,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:55:40,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:55:40,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:55:40,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:55:40,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:55:40,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:55:40,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:55:40,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:55:40,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:55:40,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:55:40,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:55:40,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:55:40,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:55:40,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:55:40,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:55:40,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:55:40,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:55:40,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:55:40,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:55:40,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:55:40,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:55:40,687 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 20:55:40,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:55:41,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:55:41,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:55:41,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:55:41,010 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:55:41,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-2.c [2020-10-12 20:55:41,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b584359d/9d47a20481404984a56abc76dd1c5d87/FLAG236ebf99a [2020-10-12 20:55:41,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:55:41,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-2.c [2020-10-12 20:55:41,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b584359d/9d47a20481404984a56abc76dd1c5d87/FLAG236ebf99a [2020-10-12 20:55:41,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b584359d/9d47a20481404984a56abc76dd1c5d87 [2020-10-12 20:55:41,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:55:41,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:55:41,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:55:41,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:55:41,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:55:41,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:55:41" (1/1) ... [2020-10-12 20:55:41,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6864e031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:41, skipping insertion in model container [2020-10-12 20:55:41,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:55:41" (1/1) ... [2020-10-12 20:55:41,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:55:42,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:55:42,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:55:42,676 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:55:42,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:55:42,843 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:55:42,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42 WrapperNode [2020-10-12 20:55:42,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:55:42,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:55:42,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:55:42,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:55:42,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (1/1) ... [2020-10-12 20:55:42,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (1/1) ... [2020-10-12 20:55:42,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (1/1) ... [2020-10-12 20:55:42,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (1/1) ... [2020-10-12 20:55:42,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (1/1) ... [2020-10-12 20:55:42,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (1/1) ... [2020-10-12 20:55:42,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (1/1) ... [2020-10-12 20:55:42,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:55:42,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:55:42,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:55:42,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:55:42,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:55:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:55:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:55:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:55:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:55:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:55:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:55:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:55:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:55:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:55:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:55:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:55:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:55:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:55:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:55:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:55:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:55:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:55:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:55:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:55:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:55:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:55:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:55:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:55:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:55:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:55:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:55:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:55:43,482 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:55:44,127 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:55:44,128 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:55:44,154 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:55:44,154 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:55:44,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:55:44 BoogieIcfgContainer [2020-10-12 20:55:44,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:55:44,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:55:44,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:55:44,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:55:44,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:55:41" (1/3) ... [2020-10-12 20:55:44,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae07196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:55:44, skipping insertion in model container [2020-10-12 20:55:44,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:55:42" (2/3) ... [2020-10-12 20:55:44,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae07196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:55:44, skipping insertion in model container [2020-10-12 20:55:44,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:55:44" (3/3) ... [2020-10-12 20:55:44,168 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-2.c [2020-10-12 20:55:44,178 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:55:44,186 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:55:44,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:55:44,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:55:44,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:55:44,225 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:55:44,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:55:44,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:55:44,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:55:44,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:55:44,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:55:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-12 20:55:44,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 20:55:44,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:44,269 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] [2020-10-12 20:55:44,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:44,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:44,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-12 20:55:44,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:44,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001598435] [2020-10-12 20:55:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 20:55:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-12 20:55:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:55:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:55:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:46,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:46,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:46,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:55:46,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:46,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:46,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:46,140 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 20:55:46,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001598435] [2020-10-12 20:55:46,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:46,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:46,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645067175] [2020-10-12 20:55:46,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:46,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:46,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:46,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:46,171 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-12 20:55:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:47,464 INFO L93 Difference]: Finished difference Result 407 states and 686 transitions. [2020-10-12 20:55:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:47,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-12 20:55:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:47,500 INFO L225 Difference]: With dead ends: 407 [2020-10-12 20:55:47,501 INFO L226 Difference]: Without dead ends: 238 [2020-10-12 20:55:47,507 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 20:55:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-12 20:55:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-10-12 20:55:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 20:55:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 250 transitions. [2020-10-12 20:55:47,567 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 250 transitions. Word has length 41 [2020-10-12 20:55:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:47,568 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 250 transitions. [2020-10-12 20:55:47,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 250 transitions. [2020-10-12 20:55:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 20:55:47,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:47,571 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] [2020-10-12 20:55:47,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:55:47,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:47,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:47,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1672756173, now seen corresponding path program 1 times [2020-10-12 20:55:47,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:47,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844623197] [2020-10-12 20:55:47,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:48,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 20:55:48,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:48,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-12 20:55:48,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:48,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:55:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:48,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:48,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:48,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:55:48,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:48,162 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 20:55:48,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844623197] [2020-10-12 20:55:48,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:48,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:48,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455029144] [2020-10-12 20:55:48,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:48,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:48,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:48,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:48,166 INFO L87 Difference]: Start difference. First operand 161 states and 250 transitions. Second operand 5 states. [2020-10-12 20:55:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:49,095 INFO L93 Difference]: Finished difference Result 357 states and 545 transitions. [2020-10-12 20:55:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:49,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-12 20:55:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:49,099 INFO L225 Difference]: With dead ends: 357 [2020-10-12 20:55:49,102 INFO L226 Difference]: Without dead ends: 230 [2020-10-12 20:55:49,104 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 20:55:49,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-12 20:55:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 162. [2020-10-12 20:55:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:55:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 251 transitions. [2020-10-12 20:55:49,131 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 251 transitions. Word has length 42 [2020-10-12 20:55:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:49,132 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 251 transitions. [2020-10-12 20:55:49,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 251 transitions. [2020-10-12 20:55:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 20:55:49,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:49,139 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] [2020-10-12 20:55:49,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:55:49,142 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:49,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:49,143 INFO L82 PathProgramCache]: Analyzing trace with hash -657325381, now seen corresponding path program 1 times [2020-10-12 20:55:49,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:49,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947573332] [2020-10-12 20:55:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:49,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 20:55:49,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:49,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-12 20:55:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:55:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:49,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:49,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:49,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:49,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:49,566 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 20:55:49,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947573332] [2020-10-12 20:55:49,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:49,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:49,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812121167] [2020-10-12 20:55:49,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:49,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:49,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:49,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:49,569 INFO L87 Difference]: Start difference. First operand 162 states and 251 transitions. Second operand 5 states. [2020-10-12 20:55:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:50,356 INFO L93 Difference]: Finished difference Result 306 states and 468 transitions. [2020-10-12 20:55:50,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:50,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-12 20:55:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:50,359 INFO L225 Difference]: With dead ends: 306 [2020-10-12 20:55:50,359 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:55:50,360 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 20:55:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:55:50,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-12 20:55:50,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-12 20:55:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-12 20:55:50,371 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 48 [2020-10-12 20:55:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:50,372 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-12 20:55:50,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:50,372 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-12 20:55:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 20:55:50,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:50,374 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] [2020-10-12 20:55:50,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:55:50,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:50,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1703145427, now seen corresponding path program 1 times [2020-10-12 20:55:50,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:50,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925133963] [2020-10-12 20:55:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 20:55:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-12 20:55:51,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:55:51,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:51,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:55:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:51,285 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 20:55:51,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925133963] [2020-10-12 20:55:51,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:51,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:51,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306310519] [2020-10-12 20:55:51,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:51,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:51,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:51,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:51,288 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-12 20:55:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:52,032 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-12 20:55:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:52,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-12 20:55:52,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:52,036 INFO L225 Difference]: With dead ends: 296 [2020-10-12 20:55:52,036 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:55:52,037 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 20:55:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:55:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-12 20:55:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-12 20:55:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-12 20:55:52,063 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 54 [2020-10-12 20:55:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:52,064 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-12 20:55:52,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-12 20:55:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:55:52,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:52,070 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] [2020-10-12 20:55:52,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:55:52,070 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:52,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1599562843, now seen corresponding path program 1 times [2020-10-12 20:55:52,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:52,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500826005] [2020-10-12 20:55:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:57,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:57,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:55:57,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:57,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:55:57,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:55:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:55:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:57,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:57,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:57,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:57,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:57,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:55:57,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:57,256 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 20:55:57,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500826005] [2020-10-12 20:55:57,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:57,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:57,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221594665] [2020-10-12 20:55:57,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:57,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:57,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:57,260 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-12 20:55:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:57,972 INFO L93 Difference]: Finished difference Result 296 states and 448 transitions. [2020-10-12 20:55:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:57,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:55:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:57,975 INFO L225 Difference]: With dead ends: 296 [2020-10-12 20:55:57,975 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:55:57,976 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 20:55:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:55:57,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2020-10-12 20:55:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:55:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 243 transitions. [2020-10-12 20:55:57,984 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 243 transitions. Word has length 55 [2020-10-12 20:55:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:57,985 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 243 transitions. [2020-10-12 20:55:57,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 243 transitions. [2020-10-12 20:55:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:55:57,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:57,986 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] [2020-10-12 20:55:57,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:55:57,987 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:57,987 INFO L82 PathProgramCache]: Analyzing trace with hash -667714460, now seen corresponding path program 1 times [2020-10-12 20:55:57,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:57,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733120052] [2020-10-12 20:55:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:58,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:55:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-12 20:55:58,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 20:55:58,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:58,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:58,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:58,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:55:58,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:58,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:58,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:58,715 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 20:55:58,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733120052] [2020-10-12 20:55:58,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:58,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:58,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700091325] [2020-10-12 20:55:58,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:58,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:58,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:58,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:58,717 INFO L87 Difference]: Start difference. First operand 162 states and 243 transitions. Second operand 5 states. [2020-10-12 20:55:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:59,492 INFO L93 Difference]: Finished difference Result 294 states and 445 transitions. [2020-10-12 20:55:59,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:59,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:55:59,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:59,494 INFO L225 Difference]: With dead ends: 294 [2020-10-12 20:55:59,494 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 20:55:59,495 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 20:55:59,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 20:55:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2020-10-12 20:55:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:55:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 242 transitions. [2020-10-12 20:55:59,502 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 242 transitions. Word has length 55 [2020-10-12 20:55:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:59,502 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 242 transitions. [2020-10-12 20:55:59,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 242 transitions. [2020-10-12 20:55:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:55:59,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:59,504 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] [2020-10-12 20:55:59,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:55:59,504 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:59,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1983721381, now seen corresponding path program 1 times [2020-10-12 20:55:59,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:59,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093276974] [2020-10-12 20:55:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:56:00,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-12 20:56:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:56:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:00,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:00,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:56:00,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:00,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:00,133 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 20:56:00,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093276974] [2020-10-12 20:56:00,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:00,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:00,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83522773] [2020-10-12 20:56:00,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:00,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:00,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:00,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:00,135 INFO L87 Difference]: Start difference. First operand 162 states and 242 transitions. Second operand 5 states. [2020-10-12 20:56:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:00,760 INFO L93 Difference]: Finished difference Result 293 states and 443 transitions. [2020-10-12 20:56:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:00,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:56:00,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:00,762 INFO L225 Difference]: With dead ends: 293 [2020-10-12 20:56:00,762 INFO L226 Difference]: Without dead ends: 166 [2020-10-12 20:56:00,763 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 20:56:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-12 20:56:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-10-12 20:56:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:56:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 241 transitions. [2020-10-12 20:56:00,770 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 241 transitions. Word has length 55 [2020-10-12 20:56:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:00,770 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 241 transitions. [2020-10-12 20:56:00,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 241 transitions. [2020-10-12 20:56:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 20:56:00,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:00,771 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] [2020-10-12 20:56:00,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:56:00,772 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash -715245086, now seen corresponding path program 1 times [2020-10-12 20:56:00,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:00,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058580267] [2020-10-12 20:56:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:05,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:05,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 20:56:05,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:56:05,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:56:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:56:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:56:06,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:06,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:06,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:06,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:06,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:06,024 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 20:56:06,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058580267] [2020-10-12 20:56:06,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:06,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:56:06,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016691294] [2020-10-12 20:56:06,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:56:06,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:06,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:56:06,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:56:06,028 INFO L87 Difference]: Start difference. First operand 162 states and 241 transitions. Second operand 8 states. [2020-10-12 20:56:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:07,425 INFO L93 Difference]: Finished difference Result 437 states and 663 transitions. [2020-10-12 20:56:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:56:07,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 20:56:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:07,430 INFO L225 Difference]: With dead ends: 437 [2020-10-12 20:56:07,430 INFO L226 Difference]: Without dead ends: 310 [2020-10-12 20:56:07,431 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 20:56:07,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-12 20:56:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 264. [2020-10-12 20:56:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-12 20:56:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 405 transitions. [2020-10-12 20:56:07,443 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 405 transitions. Word has length 56 [2020-10-12 20:56:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:07,444 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 405 transitions. [2020-10-12 20:56:07,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:56:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 405 transitions. [2020-10-12 20:56:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 20:56:07,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:07,445 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] [2020-10-12 20:56:07,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:56:07,446 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:07,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-12 20:56:07,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:07,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484967166] [2020-10-12 20:56:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:08,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:08,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 20:56:08,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:08,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-12 20:56:08,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:56:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:56:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:08,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:08,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:08,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:08,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:08,207 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 20:56:08,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484967166] [2020-10-12 20:56:08,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:08,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:08,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518877355] [2020-10-12 20:56:08,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:08,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:08,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:08,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:08,210 INFO L87 Difference]: Start difference. First operand 264 states and 405 transitions. Second operand 5 states. [2020-10-12 20:56:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:09,016 INFO L93 Difference]: Finished difference Result 577 states and 894 transitions. [2020-10-12 20:56:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:09,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-12 20:56:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:09,022 INFO L225 Difference]: With dead ends: 577 [2020-10-12 20:56:09,023 INFO L226 Difference]: Without dead ends: 450 [2020-10-12 20:56:09,024 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 20:56:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-12 20:56:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 320. [2020-10-12 20:56:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-12 20:56:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 505 transitions. [2020-10-12 20:56:09,042 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 505 transitions. Word has length 58 [2020-10-12 20:56:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:09,042 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 505 transitions. [2020-10-12 20:56:09,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 505 transitions. [2020-10-12 20:56:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 20:56:09,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:09,044 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] [2020-10-12 20:56:09,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:56:09,044 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:09,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:09,045 INFO L82 PathProgramCache]: Analyzing trace with hash 843794209, now seen corresponding path program 1 times [2020-10-12 20:56:09,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:09,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933217494] [2020-10-12 20:56:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:09,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:09,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 20:56:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-12 20:56:09,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:56:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:09,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:09,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:09,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:09,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:09,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:09,717 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 20:56:09,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933217494] [2020-10-12 20:56:09,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:09,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:09,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68583906] [2020-10-12 20:56:09,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:09,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:09,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:09,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:09,721 INFO L87 Difference]: Start difference. First operand 320 states and 505 transitions. Second operand 5 states. [2020-10-12 20:56:10,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:10,547 INFO L93 Difference]: Finished difference Result 597 states and 929 transitions. [2020-10-12 20:56:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:10,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-12 20:56:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:10,551 INFO L225 Difference]: With dead ends: 597 [2020-10-12 20:56:10,551 INFO L226 Difference]: Without dead ends: 442 [2020-10-12 20:56:10,552 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 20:56:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-12 20:56:10,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 322. [2020-10-12 20:56:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-12 20:56:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 507 transitions. [2020-10-12 20:56:10,567 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 507 transitions. Word has length 59 [2020-10-12 20:56:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:10,567 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 507 transitions. [2020-10-12 20:56:10,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 507 transitions. [2020-10-12 20:56:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:56:10,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:10,569 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] [2020-10-12 20:56:10,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:56:10,569 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:10,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:10,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1514159887, now seen corresponding path program 1 times [2020-10-12 20:56:10,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:10,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882251302] [2020-10-12 20:56:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:10,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:10,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:56:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-12 20:56:10,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:10,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:56:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:56:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:10,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:10,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:10,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:10,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:56:10,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:56:11,003 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 20:56:11,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882251302] [2020-10-12 20:56:11,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:11,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:11,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876922210] [2020-10-12 20:56:11,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:11,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:11,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:11,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:11,006 INFO L87 Difference]: Start difference. First operand 322 states and 507 transitions. Second operand 5 states. [2020-10-12 20:56:11,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:11,686 INFO L93 Difference]: Finished difference Result 635 states and 997 transitions. [2020-10-12 20:56:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:11,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:56:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:11,689 INFO L225 Difference]: With dead ends: 635 [2020-10-12 20:56:11,690 INFO L226 Difference]: Without dead ends: 348 [2020-10-12 20:56:11,691 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 20:56:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-12 20:56:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 308. [2020-10-12 20:56:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-12 20:56:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 481 transitions. [2020-10-12 20:56:11,704 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 481 transitions. Word has length 65 [2020-10-12 20:56:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:11,704 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 481 transitions. [2020-10-12 20:56:11,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 481 transitions. [2020-10-12 20:56:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:56:11,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:11,711 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] [2020-10-12 20:56:11,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:56:11,712 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:11,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:11,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2139190447, now seen corresponding path program 1 times [2020-10-12 20:56:11,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:11,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433765592] [2020-10-12 20:56:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:16,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:56:16,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:56:16,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:56:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:56:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:56:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:16,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:16,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:16,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:16,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:16,843 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 20:56:16,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433765592] [2020-10-12 20:56:16,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:16,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:16,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768198217] [2020-10-12 20:56:16,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:16,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:16,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:16,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:16,848 INFO L87 Difference]: Start difference. First operand 308 states and 481 transitions. Second operand 6 states. [2020-10-12 20:56:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:17,691 INFO L93 Difference]: Finished difference Result 504 states and 783 transitions. [2020-10-12 20:56:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:56:17,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-12 20:56:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:17,694 INFO L225 Difference]: With dead ends: 504 [2020-10-12 20:56:17,694 INFO L226 Difference]: Without dead ends: 325 [2020-10-12 20:56:17,695 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 20:56:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-12 20:56:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2020-10-12 20:56:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-12 20:56:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 489 transitions. [2020-10-12 20:56:17,707 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 489 transitions. Word has length 69 [2020-10-12 20:56:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:17,707 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 489 transitions. [2020-10-12 20:56:17,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 489 transitions. [2020-10-12 20:56:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:56:17,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:17,709 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] [2020-10-12 20:56:17,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:56:17,709 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:17,710 INFO L82 PathProgramCache]: Analyzing trace with hash -356609469, now seen corresponding path program 1 times [2020-10-12 20:56:17,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:17,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97786782] [2020-10-12 20:56:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:22,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:56:22,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4316 [2020-10-12 20:56:22,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:56:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:22,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:22,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:22,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:22,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:22,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:22,131 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 20:56:22,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97786782] [2020-10-12 20:56:22,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:22,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:22,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003400581] [2020-10-12 20:56:22,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:22,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:22,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:22,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:22,134 INFO L87 Difference]: Start difference. First operand 315 states and 489 transitions. Second operand 5 states. [2020-10-12 20:56:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:22,808 INFO L93 Difference]: Finished difference Result 506 states and 783 transitions. [2020-10-12 20:56:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:22,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-12 20:56:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:22,810 INFO L225 Difference]: With dead ends: 506 [2020-10-12 20:56:22,810 INFO L226 Difference]: Without dead ends: 319 [2020-10-12 20:56:22,811 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 20:56:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-12 20:56:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2020-10-12 20:56:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-12 20:56:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 488 transitions. [2020-10-12 20:56:22,826 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 488 transitions. Word has length 69 [2020-10-12 20:56:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:22,826 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 488 transitions. [2020-10-12 20:56:22,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 488 transitions. [2020-10-12 20:56:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:56:22,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:22,827 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] [2020-10-12 20:56:22,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:56:22,828 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:22,828 INFO L82 PathProgramCache]: Analyzing trace with hash -2144249774, now seen corresponding path program 1 times [2020-10-12 20:56:22,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:22,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35889007] [2020-10-12 20:56:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:26,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 20:56:26,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3299 [2020-10-12 20:56:26,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:56:26,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:26,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:26,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:26,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:26,205 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 20:56:26,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35889007] [2020-10-12 20:56:26,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:26,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:26,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999948684] [2020-10-12 20:56:26,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:26,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:26,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:26,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:26,207 INFO L87 Difference]: Start difference. First operand 315 states and 488 transitions. Second operand 5 states. [2020-10-12 20:56:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:26,795 INFO L93 Difference]: Finished difference Result 506 states and 782 transitions. [2020-10-12 20:56:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:26,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-12 20:56:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:26,798 INFO L225 Difference]: With dead ends: 506 [2020-10-12 20:56:26,798 INFO L226 Difference]: Without dead ends: 319 [2020-10-12 20:56:26,799 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 20:56:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-12 20:56:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2020-10-12 20:56:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-12 20:56:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 487 transitions. [2020-10-12 20:56:26,812 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 487 transitions. Word has length 70 [2020-10-12 20:56:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:26,812 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 487 transitions. [2020-10-12 20:56:26,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 487 transitions. [2020-10-12 20:56:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:56:26,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:26,814 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] [2020-10-12 20:56:26,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:56:26,814 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:26,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:26,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1530710952, now seen corresponding path program 1 times [2020-10-12 20:56:26,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:26,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876192423] [2020-10-12 20:56:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:26,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:28,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:29,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:29,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:56:29,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2857 [2020-10-12 20:56:29,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:56:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:29,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:29,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:29,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:29,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:29,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:29,750 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 20:56:29,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876192423] [2020-10-12 20:56:29,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:29,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:29,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652901275] [2020-10-12 20:56:29,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:29,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:29,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:29,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:29,752 INFO L87 Difference]: Start difference. First operand 315 states and 487 transitions. Second operand 5 states. [2020-10-12 20:56:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:30,386 INFO L93 Difference]: Finished difference Result 506 states and 781 transitions. [2020-10-12 20:56:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:30,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-12 20:56:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:30,390 INFO L225 Difference]: With dead ends: 506 [2020-10-12 20:56:30,390 INFO L226 Difference]: Without dead ends: 319 [2020-10-12 20:56:30,394 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 20:56:30,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-12 20:56:30,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2020-10-12 20:56:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-12 20:56:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 486 transitions. [2020-10-12 20:56:30,407 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 486 transitions. Word has length 71 [2020-10-12 20:56:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:30,408 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 486 transitions. [2020-10-12 20:56:30,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 486 transitions. [2020-10-12 20:56:30,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:56:30,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:30,410 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] [2020-10-12 20:56:30,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:56:30,410 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:30,410 INFO L82 PathProgramCache]: Analyzing trace with hash -304046809, now seen corresponding path program 1 times [2020-10-12 20:56:30,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:30,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230600989] [2020-10-12 20:56:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:31,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:56:31,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-12 20:56:31,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:56:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:56:31,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:31,184 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 20:56:31,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230600989] [2020-10-12 20:56:31,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:31,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:31,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193695546] [2020-10-12 20:56:31,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:31,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:31,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:31,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:31,186 INFO L87 Difference]: Start difference. First operand 315 states and 486 transitions. Second operand 5 states. [2020-10-12 20:56:32,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:32,023 INFO L93 Difference]: Finished difference Result 587 states and 905 transitions. [2020-10-12 20:56:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:32,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-12 20:56:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:32,026 INFO L225 Difference]: With dead ends: 587 [2020-10-12 20:56:32,027 INFO L226 Difference]: Without dead ends: 429 [2020-10-12 20:56:32,028 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 20:56:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-10-12 20:56:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 343. [2020-10-12 20:56:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-12 20:56:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 536 transitions. [2020-10-12 20:56:32,039 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 536 transitions. Word has length 71 [2020-10-12 20:56:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:32,040 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 536 transitions. [2020-10-12 20:56:32,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 536 transitions. [2020-10-12 20:56:32,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:56:32,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:32,041 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] [2020-10-12 20:56:32,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:56:32,042 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:32,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:32,042 INFO L82 PathProgramCache]: Analyzing trace with hash -493854329, now seen corresponding path program 1 times [2020-10-12 20:56:32,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:32,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110037878] [2020-10-12 20:56:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:37,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:56:37,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:56:37,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:37,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:56:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:56:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:37,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:37,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:37,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:37,140 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 20:56:37,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110037878] [2020-10-12 20:56:37,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:37,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:37,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631698554] [2020-10-12 20:56:37,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:37,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:37,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:37,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:37,143 INFO L87 Difference]: Start difference. First operand 343 states and 536 transitions. Second operand 5 states. [2020-10-12 20:56:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:37,819 INFO L93 Difference]: Finished difference Result 577 states and 893 transitions. [2020-10-12 20:56:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:37,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:56:37,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:37,822 INFO L225 Difference]: With dead ends: 577 [2020-10-12 20:56:37,823 INFO L226 Difference]: Without dead ends: 381 [2020-10-12 20:56:37,823 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 20:56:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-12 20:56:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 352. [2020-10-12 20:56:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-12 20:56:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 545 transitions. [2020-10-12 20:56:37,836 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 545 transitions. Word has length 72 [2020-10-12 20:56:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:37,836 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 545 transitions. [2020-10-12 20:56:37,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 545 transitions. [2020-10-12 20:56:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:56:37,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:37,838 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] [2020-10-12 20:56:37,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:56:37,838 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:37,838 INFO L82 PathProgramCache]: Analyzing trace with hash -254332924, now seen corresponding path program 1 times [2020-10-12 20:56:37,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:37,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474052405] [2020-10-12 20:56:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:38,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:56:38,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-12 20:56:38,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:56:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:38,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:38,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:38,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:38,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:38,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:56:38,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474052405] [2020-10-12 20:56:38,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:38,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:38,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469044403] [2020-10-12 20:56:38,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:38,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:38,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:38,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:38,516 INFO L87 Difference]: Start difference. First operand 352 states and 545 transitions. Second operand 5 states. [2020-10-12 20:56:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:39,121 INFO L93 Difference]: Finished difference Result 576 states and 887 transitions. [2020-10-12 20:56:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:39,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:56:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:39,124 INFO L225 Difference]: With dead ends: 576 [2020-10-12 20:56:39,124 INFO L226 Difference]: Without dead ends: 381 [2020-10-12 20:56:39,125 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 20:56:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-12 20:56:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 352. [2020-10-12 20:56:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-12 20:56:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 543 transitions. [2020-10-12 20:56:39,136 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 543 transitions. Word has length 72 [2020-10-12 20:56:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:39,137 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 543 transitions. [2020-10-12 20:56:39,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 543 transitions. [2020-10-12 20:56:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:56:39,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:39,138 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] [2020-10-12 20:56:39,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:56:39,139 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:39,139 INFO L82 PathProgramCache]: Analyzing trace with hash -109695791, now seen corresponding path program 1 times [2020-10-12 20:56:39,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:39,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640178831] [2020-10-12 20:56:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:39,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:39,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:56:39,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-12 20:56:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:56:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:56:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:39,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:39,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:39,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:39,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:39,580 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 20:56:39,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640178831] [2020-10-12 20:56:39,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:39,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:39,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550345197] [2020-10-12 20:56:39,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:39,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:39,582 INFO L87 Difference]: Start difference. First operand 352 states and 543 transitions. Second operand 5 states. [2020-10-12 20:56:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:40,507 INFO L93 Difference]: Finished difference Result 743 states and 1152 transitions. [2020-10-12 20:56:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:40,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:56:40,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:40,512 INFO L225 Difference]: With dead ends: 743 [2020-10-12 20:56:40,512 INFO L226 Difference]: Without dead ends: 548 [2020-10-12 20:56:40,513 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 20:56:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-10-12 20:56:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 382. [2020-10-12 20:56:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-12 20:56:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 595 transitions. [2020-10-12 20:56:40,524 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 595 transitions. Word has length 72 [2020-10-12 20:56:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:40,524 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 595 transitions. [2020-10-12 20:56:40,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 595 transitions. [2020-10-12 20:56:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:56:40,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:40,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 20:56:40,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:56:40,526 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:40,527 INFO L82 PathProgramCache]: Analyzing trace with hash 885448891, now seen corresponding path program 1 times [2020-10-12 20:56:40,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:40,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353750404] [2020-10-12 20:56:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:40,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:40,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:40,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:40,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:56:40,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:40,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-12 20:56:40,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:56:40,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:40,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:40,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:40,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:40,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:56:41,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353750404] [2020-10-12 20:56:41,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:41,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:41,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937000461] [2020-10-12 20:56:41,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:41,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:41,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:41,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:41,005 INFO L87 Difference]: Start difference. First operand 382 states and 595 transitions. Second operand 5 states. [2020-10-12 20:56:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:41,549 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-10-12 20:56:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:41,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:56:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:41,551 INFO L225 Difference]: With dead ends: 605 [2020-10-12 20:56:41,551 INFO L226 Difference]: Without dead ends: 409 [2020-10-12 20:56:41,552 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 20:56:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-12 20:56:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 382. [2020-10-12 20:56:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-12 20:56:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 593 transitions. [2020-10-12 20:56:41,566 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 593 transitions. Word has length 73 [2020-10-12 20:56:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:41,566 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 593 transitions. [2020-10-12 20:56:41,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 593 transitions. [2020-10-12 20:56:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:56:41,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:41,568 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] [2020-10-12 20:56:41,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:56:41,568 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:41,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1475581338, now seen corresponding path program 1 times [2020-10-12 20:56:41,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:41,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568699214] [2020-10-12 20:56:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:41,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:41,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:41,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:56:41,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-12 20:56:41,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:56:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:42,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:42,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:42,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:42,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:42,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:42,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:42,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:42,013 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 20:56:42,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568699214] [2020-10-12 20:56:42,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:42,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:42,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367819754] [2020-10-12 20:56:42,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:42,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:42,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:42,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:42,015 INFO L87 Difference]: Start difference. First operand 382 states and 593 transitions. Second operand 5 states. [2020-10-12 20:56:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:42,629 INFO L93 Difference]: Finished difference Result 764 states and 1190 transitions. [2020-10-12 20:56:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:42,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:56:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:42,632 INFO L225 Difference]: With dead ends: 764 [2020-10-12 20:56:42,632 INFO L226 Difference]: Without dead ends: 407 [2020-10-12 20:56:42,633 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 20:56:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-12 20:56:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 382. [2020-10-12 20:56:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-12 20:56:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 591 transitions. [2020-10-12 20:56:42,645 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 591 transitions. Word has length 73 [2020-10-12 20:56:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:42,646 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 591 transitions. [2020-10-12 20:56:42,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 591 transitions. [2020-10-12 20:56:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:56:42,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:42,647 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] [2020-10-12 20:56:42,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:56:42,648 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:42,648 INFO L82 PathProgramCache]: Analyzing trace with hash -381717993, now seen corresponding path program 1 times [2020-10-12 20:56:42,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:42,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139481059] [2020-10-12 20:56:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:47,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:47,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:56:47,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:56:47,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:56:47,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:56:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:56:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:56:47,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:47,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:47,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:47,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:47,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:47,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:47,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:47,796 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 20:56:47,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139481059] [2020-10-12 20:56:47,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:47,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:47,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284864246] [2020-10-12 20:56:47,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:47,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:47,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:47,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:47,798 INFO L87 Difference]: Start difference. First operand 382 states and 591 transitions. Second operand 5 states. [2020-10-12 20:56:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:48,723 INFO L93 Difference]: Finished difference Result 768 states and 1181 transitions. [2020-10-12 20:56:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:48,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:56:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:48,728 INFO L225 Difference]: With dead ends: 768 [2020-10-12 20:56:48,728 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:56:48,729 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 20:56:48,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:56:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 398. [2020-10-12 20:56:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-12 20:56:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 613 transitions. [2020-10-12 20:56:48,741 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 613 transitions. Word has length 73 [2020-10-12 20:56:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:48,741 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 613 transitions. [2020-10-12 20:56:48,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 613 transitions. [2020-10-12 20:56:48,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:56:48,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:48,743 INFO L422 BasicCegarLoop]: trace histogram [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 20:56:48,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:56:48,744 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:48,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:48,744 INFO L82 PathProgramCache]: Analyzing trace with hash -142196588, now seen corresponding path program 1 times [2020-10-12 20:56:48,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:48,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650698880] [2020-10-12 20:56:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:50,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:51,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:51,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:56:51,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2813 [2020-10-12 20:56:51,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:56:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:51,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:51,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:51,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:51,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:51,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:51,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:51,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650698880] [2020-10-12 20:56:51,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:51,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:51,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645283609] [2020-10-12 20:56:51,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:51,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:51,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:51,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:51,635 INFO L87 Difference]: Start difference. First operand 398 states and 613 transitions. Second operand 5 states. [2020-10-12 20:56:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:52,181 INFO L93 Difference]: Finished difference Result 642 states and 987 transitions. [2020-10-12 20:56:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:52,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:56:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:52,184 INFO L225 Difference]: With dead ends: 642 [2020-10-12 20:56:52,184 INFO L226 Difference]: Without dead ends: 401 [2020-10-12 20:56:52,185 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 20:56:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-12 20:56:52,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 398. [2020-10-12 20:56:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-12 20:56:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 612 transitions. [2020-10-12 20:56:52,198 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 612 transitions. Word has length 73 [2020-10-12 20:56:52,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:52,198 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 612 transitions. [2020-10-12 20:56:52,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 612 transitions. [2020-10-12 20:56:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:56:52,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:52,200 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] [2020-10-12 20:56:52,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:56:52,200 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:52,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-12 20:56:52,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:52,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973310937] [2020-10-12 20:56:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:52,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:56:52,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-12 20:56:52,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:56:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:52,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:52,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:52,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:52,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:52,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:52,548 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 20:56:52,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973310937] [2020-10-12 20:56:52,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:52,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:52,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367476564] [2020-10-12 20:56:52,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:52,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:52,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:52,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:52,550 INFO L87 Difference]: Start difference. First operand 398 states and 612 transitions. Second operand 5 states. [2020-10-12 20:56:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:53,445 INFO L93 Difference]: Finished difference Result 806 states and 1244 transitions. [2020-10-12 20:56:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:53,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:56:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:53,449 INFO L225 Difference]: With dead ends: 806 [2020-10-12 20:56:53,449 INFO L226 Difference]: Without dead ends: 594 [2020-10-12 20:56:53,450 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 20:56:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-12 20:56:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 430. [2020-10-12 20:56:53,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-12 20:56:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 664 transitions. [2020-10-12 20:56:53,463 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 664 transitions. Word has length 80 [2020-10-12 20:56:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:53,463 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 664 transitions. [2020-10-12 20:56:53,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 664 transitions. [2020-10-12 20:56:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:56:53,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:53,465 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] [2020-10-12 20:56:53,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:56:53,465 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1028668226, now seen corresponding path program 1 times [2020-10-12 20:56:53,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:53,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690820085] [2020-10-12 20:56:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:53,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:54,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:56:54,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-12 20:56:54,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:56:54,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:54,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:54,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:54,149 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 20:56:54,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690820085] [2020-10-12 20:56:54,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:54,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:54,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128561128] [2020-10-12 20:56:54,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:54,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:54,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:54,151 INFO L87 Difference]: Start difference. First operand 430 states and 664 transitions. Second operand 5 states. [2020-10-12 20:56:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:54,920 INFO L93 Difference]: Finished difference Result 941 states and 1462 transitions. [2020-10-12 20:56:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:54,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:56:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:54,924 INFO L225 Difference]: With dead ends: 941 [2020-10-12 20:56:54,924 INFO L226 Difference]: Without dead ends: 536 [2020-10-12 20:56:54,926 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 20:56:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-10-12 20:56:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 478. [2020-10-12 20:56:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-12 20:56:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 748 transitions. [2020-10-12 20:56:54,939 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 748 transitions. Word has length 80 [2020-10-12 20:56:54,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:54,940 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 748 transitions. [2020-10-12 20:56:54,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 748 transitions. [2020-10-12 20:56:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:56:54,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:54,942 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] [2020-10-12 20:56:54,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:56:54,942 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:54,942 INFO L82 PathProgramCache]: Analyzing trace with hash 354143499, now seen corresponding path program 1 times [2020-10-12 20:56:54,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:54,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253300120] [2020-10-12 20:56:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:55,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:56:55,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:55,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 20:56:55,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:55,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:55,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:55,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:56:55,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:55,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:55,255 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 20:56:55,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253300120] [2020-10-12 20:56:55,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:55,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:55,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718042066] [2020-10-12 20:56:55,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:55,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:55,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:55,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:55,256 INFO L87 Difference]: Start difference. First operand 478 states and 748 transitions. Second operand 5 states. [2020-10-12 20:56:56,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:56,096 INFO L93 Difference]: Finished difference Result 886 states and 1381 transitions. [2020-10-12 20:56:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:56,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:56:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:56,100 INFO L225 Difference]: With dead ends: 886 [2020-10-12 20:56:56,100 INFO L226 Difference]: Without dead ends: 634 [2020-10-12 20:56:56,101 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 20:56:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-10-12 20:56:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 506. [2020-10-12 20:56:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-12 20:56:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 800 transitions. [2020-10-12 20:56:56,115 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 800 transitions. Word has length 81 [2020-10-12 20:56:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:56,116 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 800 transitions. [2020-10-12 20:56:56,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 800 transitions. [2020-10-12 20:56:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:56:56,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:56,117 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] [2020-10-12 20:56:56,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:56:56,118 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:56,118 INFO L82 PathProgramCache]: Analyzing trace with hash 584541116, now seen corresponding path program 1 times [2020-10-12 20:56:56,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:56,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200571232] [2020-10-12 20:56:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:56,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:00,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:00,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:57:00,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4300 [2020-10-12 20:57:00,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:57:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 20:57:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:00,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:00,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:00,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:00,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:00,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:00,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:00,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200571232] [2020-10-12 20:57:00,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:00,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:00,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832332896] [2020-10-12 20:57:00,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:00,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:00,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:00,493 INFO L87 Difference]: Start difference. First operand 506 states and 800 transitions. Second operand 5 states. [2020-10-12 20:57:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:01,091 INFO L93 Difference]: Finished difference Result 835 states and 1308 transitions. [2020-10-12 20:57:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:01,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:57:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:01,095 INFO L225 Difference]: With dead ends: 835 [2020-10-12 20:57:01,095 INFO L226 Difference]: Without dead ends: 540 [2020-10-12 20:57:01,096 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 20:57:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-12 20:57:01,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 506. [2020-10-12 20:57:01,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-12 20:57:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 798 transitions. [2020-10-12 20:57:01,111 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 798 transitions. Word has length 87 [2020-10-12 20:57:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:01,111 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 798 transitions. [2020-10-12 20:57:01,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 798 transitions. [2020-10-12 20:57:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:57:01,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:01,113 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] [2020-10-12 20:57:01,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:57:01,114 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash -666161799, now seen corresponding path program 1 times [2020-10-12 20:57:01,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:01,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472343715] [2020-10-12 20:57:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:01,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:57:01,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:01,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-12 20:57:01,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:01,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:57:01,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:01,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:01,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:01,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:01,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:01,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:01,544 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 20:57:01,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472343715] [2020-10-12 20:57:01,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:01,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:01,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315016114] [2020-10-12 20:57:01,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:01,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:01,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:01,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:01,546 INFO L87 Difference]: Start difference. First operand 506 states and 798 transitions. Second operand 5 states. [2020-10-12 20:57:02,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:02,406 INFO L93 Difference]: Finished difference Result 1115 states and 1752 transitions. [2020-10-12 20:57:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:02,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:57:02,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:02,409 INFO L225 Difference]: With dead ends: 1115 [2020-10-12 20:57:02,409 INFO L226 Difference]: Without dead ends: 634 [2020-10-12 20:57:02,410 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 20:57:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-10-12 20:57:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 526. [2020-10-12 20:57:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-12 20:57:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 836 transitions. [2020-10-12 20:57:02,424 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 836 transitions. Word has length 87 [2020-10-12 20:57:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:02,424 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 836 transitions. [2020-10-12 20:57:02,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 836 transitions. [2020-10-12 20:57:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:57:02,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:02,426 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-12 20:57:02,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:57:02,427 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:02,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2037317477, now seen corresponding path program 1 times [2020-10-12 20:57:02,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:02,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265885448] [2020-10-12 20:57:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:02,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:06,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:57:06,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4179 [2020-10-12 20:57:06,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:57:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:06,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:06,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:06,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 20:57:06,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265885448] [2020-10-12 20:57:06,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:06,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:06,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058236454] [2020-10-12 20:57:06,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:06,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:06,732 INFO L87 Difference]: Start difference. First operand 526 states and 836 transitions. Second operand 5 states. [2020-10-12 20:57:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:07,466 INFO L93 Difference]: Finished difference Result 1532 states and 2446 transitions. [2020-10-12 20:57:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:07,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:57:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:07,472 INFO L225 Difference]: With dead ends: 1532 [2020-10-12 20:57:07,472 INFO L226 Difference]: Without dead ends: 1031 [2020-10-12 20:57:07,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-10-12 20:57:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1029. [2020-10-12 20:57:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-12 20:57:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1620 transitions. [2020-10-12 20:57:07,509 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1620 transitions. Word has length 88 [2020-10-12 20:57:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:07,509 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1620 transitions. [2020-10-12 20:57:07,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1620 transitions. [2020-10-12 20:57:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:57:07,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:07,512 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-12 20:57:07,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:57:07,513 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:07,513 INFO L82 PathProgramCache]: Analyzing trace with hash 498977447, now seen corresponding path program 1 times [2020-10-12 20:57:07,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:07,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570273402] [2020-10-12 20:57:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:07,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:08,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:10,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:10,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:57:10,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:10,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3427 [2020-10-12 20:57:10,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:10,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:10,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:57:10,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:57:10,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:11,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:11,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:11,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:57:11,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570273402] [2020-10-12 20:57:11,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:11,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:11,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15942277] [2020-10-12 20:57:11,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:11,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:11,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:11,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:11,058 INFO L87 Difference]: Start difference. First operand 1029 states and 1620 transitions. Second operand 5 states. [2020-10-12 20:57:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:12,094 INFO L93 Difference]: Finished difference Result 1881 states and 2945 transitions. [2020-10-12 20:57:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:12,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:57:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:12,102 INFO L225 Difference]: With dead ends: 1881 [2020-10-12 20:57:12,103 INFO L226 Difference]: Without dead ends: 1337 [2020-10-12 20:57:12,111 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 20:57:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-12 20:57:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1031. [2020-10-12 20:57:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-10-12 20:57:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1616 transitions. [2020-10-12 20:57:12,159 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1616 transitions. Word has length 88 [2020-10-12 20:57:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:12,160 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1616 transitions. [2020-10-12 20:57:12,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1616 transitions. [2020-10-12 20:57:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:57:12,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:12,162 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] [2020-10-12 20:57:12,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:57:12,163 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash 606638003, now seen corresponding path program 1 times [2020-10-12 20:57:12,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:12,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983054615] [2020-10-12 20:57:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:12,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:57:12,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-12 20:57:12,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:57:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:12,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:12,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:12,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:12,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:12,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:12,515 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 20:57:12,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983054615] [2020-10-12 20:57:12,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:12,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:12,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616648190] [2020-10-12 20:57:12,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:12,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:12,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:12,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:12,517 INFO L87 Difference]: Start difference. First operand 1031 states and 1616 transitions. Second operand 5 states. [2020-10-12 20:57:13,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:13,398 INFO L93 Difference]: Finished difference Result 2209 states and 3429 transitions. [2020-10-12 20:57:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:13,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:57:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:13,403 INFO L225 Difference]: With dead ends: 2209 [2020-10-12 20:57:13,403 INFO L226 Difference]: Without dead ends: 1219 [2020-10-12 20:57:13,405 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 20:57:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-10-12 20:57:13,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1031. [2020-10-12 20:57:13,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-10-12 20:57:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1616 transitions. [2020-10-12 20:57:13,434 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1616 transitions. Word has length 88 [2020-10-12 20:57:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:13,434 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1616 transitions. [2020-10-12 20:57:13,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1616 transitions. [2020-10-12 20:57:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:57:13,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:13,437 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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 20:57:13,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:57:13,438 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:13,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:13,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1511340895, now seen corresponding path program 1 times [2020-10-12 20:57:13,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:13,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035297186] [2020-10-12 20:57:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:13,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:18,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:57:18,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:57:18,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 20:57:18,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:57:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:57:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:57:18,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:18,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:18,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:18,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:18,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:18,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:57:18,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035297186] [2020-10-12 20:57:18,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:57:18,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:57:18,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114303748] [2020-10-12 20:57:18,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:57:18,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:18,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:57:18,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:57:18,718 INFO L87 Difference]: Start difference. First operand 1031 states and 1616 transitions. Second operand 9 states. [2020-10-12 20:57:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:20,340 INFO L93 Difference]: Finished difference Result 2131 states and 3329 transitions. [2020-10-12 20:57:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:57:20,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-12 20:57:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:20,348 INFO L225 Difference]: With dead ends: 2131 [2020-10-12 20:57:20,348 INFO L226 Difference]: Without dead ends: 1583 [2020-10-12 20:57:20,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:57:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-10-12 20:57:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1049. [2020-10-12 20:57:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-10-12 20:57:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1637 transitions. [2020-10-12 20:57:20,375 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1637 transitions. Word has length 89 [2020-10-12 20:57:20,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:20,375 INFO L479 AbstractCegarLoop]: Abstraction has 1049 states and 1637 transitions. [2020-10-12 20:57:20,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:57:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1637 transitions. [2020-10-12 20:57:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:57:20,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:20,379 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:20,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:57:20,379 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:20,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1531733384, now seen corresponding path program 1 times [2020-10-12 20:57:20,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:20,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866507043] [2020-10-12 20:57:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:22,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:22,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:57:22,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-12 20:57:22,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 20:57:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:57:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:22,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:22,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:22,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:57:22,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:22,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 20:57:22,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866507043] [2020-10-12 20:57:22,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:22,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:22,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943684111] [2020-10-12 20:57:22,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:22,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:22,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:22,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:22,235 INFO L87 Difference]: Start difference. First operand 1049 states and 1637 transitions. Second operand 5 states. [2020-10-12 20:57:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:23,173 INFO L93 Difference]: Finished difference Result 1786 states and 2780 transitions. [2020-10-12 20:57:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:23,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:57:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:23,178 INFO L225 Difference]: With dead ends: 1786 [2020-10-12 20:57:23,178 INFO L226 Difference]: Without dead ends: 1238 [2020-10-12 20:57:23,179 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 20:57:23,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-10-12 20:57:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1106. [2020-10-12 20:57:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-10-12 20:57:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1732 transitions. [2020-10-12 20:57:23,205 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1732 transitions. Word has length 89 [2020-10-12 20:57:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:23,205 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1732 transitions. [2020-10-12 20:57:23,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1732 transitions. [2020-10-12 20:57:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:57:23,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:23,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-12 20:57:23,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:57:23,208 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash -941600937, now seen corresponding path program 1 times [2020-10-12 20:57:23,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:23,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158675229] [2020-10-12 20:57:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:23,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:24,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:24,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:57:24,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1494 [2020-10-12 20:57:24,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:57:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:57:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:24,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:24,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:24,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:24,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:57:24,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158675229] [2020-10-12 20:57:24,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:24,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:24,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985108073] [2020-10-12 20:57:24,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:24,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:24,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:24,792 INFO L87 Difference]: Start difference. First operand 1106 states and 1732 transitions. Second operand 5 states. [2020-10-12 20:57:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:25,601 INFO L93 Difference]: Finished difference Result 2601 states and 4081 transitions. [2020-10-12 20:57:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:25,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:57:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:25,609 INFO L225 Difference]: With dead ends: 2601 [2020-10-12 20:57:25,610 INFO L226 Difference]: Without dead ends: 1534 [2020-10-12 20:57:25,611 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 20:57:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2020-10-12 20:57:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1174. [2020-10-12 20:57:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-10-12 20:57:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1828 transitions. [2020-10-12 20:57:25,645 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1828 transitions. Word has length 89 [2020-10-12 20:57:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:25,645 INFO L479 AbstractCegarLoop]: Abstraction has 1174 states and 1828 transitions. [2020-10-12 20:57:25,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:25,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1828 transitions. [2020-10-12 20:57:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:57:25,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:25,648 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] [2020-10-12 20:57:25,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:57:25,648 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:25,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1729453861, now seen corresponding path program 1 times [2020-10-12 20:57:25,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:25,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919384997] [2020-10-12 20:57:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:25,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:29,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:57:29,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3931 [2020-10-12 20:57:29,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:57:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:57:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:29,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:29,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:29,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:29,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:29,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:29,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:29,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:29,681 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 20:57:29,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919384997] [2020-10-12 20:57:29,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:29,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:29,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931456769] [2020-10-12 20:57:29,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:29,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:29,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:29,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:29,682 INFO L87 Difference]: Start difference. First operand 1174 states and 1828 transitions. Second operand 5 states. [2020-10-12 20:57:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:30,522 INFO L93 Difference]: Finished difference Result 2511 states and 3868 transitions. [2020-10-12 20:57:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:30,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:57:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:30,531 INFO L225 Difference]: With dead ends: 2511 [2020-10-12 20:57:30,531 INFO L226 Difference]: Without dead ends: 1334 [2020-10-12 20:57:30,533 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 20:57:30,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-10-12 20:57:30,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1174. [2020-10-12 20:57:30,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-10-12 20:57:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1824 transitions. [2020-10-12 20:57:30,559 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1824 transitions. Word has length 94 [2020-10-12 20:57:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:30,560 INFO L479 AbstractCegarLoop]: Abstraction has 1174 states and 1824 transitions. [2020-10-12 20:57:30,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1824 transitions. [2020-10-12 20:57:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:57:30,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:30,562 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] [2020-10-12 20:57:30,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:57:30,562 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:30,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2082542243, now seen corresponding path program 1 times [2020-10-12 20:57:30,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:30,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912842349] [2020-10-12 20:57:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:31,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:57:34,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3775 [2020-10-12 20:57:34,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:57:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:57:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:34,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:34,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:34,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:34,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:34,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:34,432 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 20:57:34,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912842349] [2020-10-12 20:57:34,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:34,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:34,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825462648] [2020-10-12 20:57:34,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:34,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:34,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:34,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:34,433 INFO L87 Difference]: Start difference. First operand 1174 states and 1824 transitions. Second operand 5 states. [2020-10-12 20:57:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:35,204 INFO L93 Difference]: Finished difference Result 2443 states and 3774 transitions. [2020-10-12 20:57:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:35,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:57:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:35,211 INFO L225 Difference]: With dead ends: 2443 [2020-10-12 20:57:35,211 INFO L226 Difference]: Without dead ends: 1266 [2020-10-12 20:57:35,213 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 20:57:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2020-10-12 20:57:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1174. [2020-10-12 20:57:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-10-12 20:57:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1820 transitions. [2020-10-12 20:57:35,241 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1820 transitions. Word has length 94 [2020-10-12 20:57:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:35,242 INFO L479 AbstractCegarLoop]: Abstraction has 1174 states and 1820 transitions. [2020-10-12 20:57:35,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1820 transitions. [2020-10-12 20:57:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:57:35,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:35,244 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:35,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:57:35,245 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:35,245 INFO L82 PathProgramCache]: Analyzing trace with hash -31689434, now seen corresponding path program 1 times [2020-10-12 20:57:35,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:35,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775298054] [2020-10-12 20:57:35,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:35,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:38,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:38,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:57:38,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3078 [2020-10-12 20:57:38,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:57:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:57:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:38,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:38,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:38,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:38,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:38,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:57:38,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775298054] [2020-10-12 20:57:38,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:38,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:38,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068526066] [2020-10-12 20:57:38,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:38,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:38,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:38,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:38,415 INFO L87 Difference]: Start difference. First operand 1174 states and 1820 transitions. Second operand 5 states. [2020-10-12 20:57:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:39,217 INFO L93 Difference]: Finished difference Result 2172 states and 3361 transitions. [2020-10-12 20:57:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:39,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:57:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:39,224 INFO L225 Difference]: With dead ends: 2172 [2020-10-12 20:57:39,224 INFO L226 Difference]: Without dead ends: 1532 [2020-10-12 20:57:39,225 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 20:57:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-10-12 20:57:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1170. [2020-10-12 20:57:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-12 20:57:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1796 transitions. [2020-10-12 20:57:39,250 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1796 transitions. Word has length 95 [2020-10-12 20:57:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:39,250 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1796 transitions. [2020-10-12 20:57:39,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1796 transitions. [2020-10-12 20:57:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 20:57:39,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:39,252 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:57:39,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:57:39,252 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:39,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:39,253 INFO L82 PathProgramCache]: Analyzing trace with hash 736231304, now seen corresponding path program 1 times [2020-10-12 20:57:39,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:39,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361736166] [2020-10-12 20:57:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:39,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:40,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:40,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:57:40,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1244 [2020-10-12 20:57:40,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:57:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:40,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:40,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:40,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:40,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:40,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361736166] [2020-10-12 20:57:40,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:40,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:40,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724589359] [2020-10-12 20:57:40,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:40,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:40,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:40,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:40,593 INFO L87 Difference]: Start difference. First operand 1170 states and 1796 transitions. Second operand 5 states. [2020-10-12 20:57:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:41,423 INFO L93 Difference]: Finished difference Result 1966 states and 2984 transitions. [2020-10-12 20:57:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:41,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-12 20:57:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:41,430 INFO L225 Difference]: With dead ends: 1966 [2020-10-12 20:57:41,430 INFO L226 Difference]: Without dead ends: 1326 [2020-10-12 20:57:41,432 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 20:57:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-10-12 20:57:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1170. [2020-10-12 20:57:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-12 20:57:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1792 transitions. [2020-10-12 20:57:41,469 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1792 transitions. Word has length 100 [2020-10-12 20:57:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:41,469 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1792 transitions. [2020-10-12 20:57:41,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1792 transitions. [2020-10-12 20:57:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 20:57:41,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:41,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:57:41,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:57:41,473 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:41,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1180131978, now seen corresponding path program 1 times [2020-10-12 20:57:41,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:41,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572670630] [2020-10-12 20:57:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:42,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:42,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:57:42,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:42,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-10-12 20:57:42,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:57:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:43,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:43,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:43,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:43,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:43,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:43,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572670630] [2020-10-12 20:57:43,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:43,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:43,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288836117] [2020-10-12 20:57:43,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:43,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:43,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:43,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:43,052 INFO L87 Difference]: Start difference. First operand 1170 states and 1792 transitions. Second operand 5 states. [2020-10-12 20:57:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:43,773 INFO L93 Difference]: Finished difference Result 1898 states and 2892 transitions. [2020-10-12 20:57:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:43,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-12 20:57:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:43,778 INFO L225 Difference]: With dead ends: 1898 [2020-10-12 20:57:43,779 INFO L226 Difference]: Without dead ends: 1258 [2020-10-12 20:57:43,780 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 20:57:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-12 20:57:43,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1170. [2020-10-12 20:57:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-12 20:57:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1788 transitions. [2020-10-12 20:57:43,822 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1788 transitions. Word has length 100 [2020-10-12 20:57:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:43,822 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1788 transitions. [2020-10-12 20:57:43,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1788 transitions. [2020-10-12 20:57:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:57:43,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:43,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:43,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:57:43,825 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1270854244, now seen corresponding path program 1 times [2020-10-12 20:57:43,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:43,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091243455] [2020-10-12 20:57:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:45,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:45,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:57:45,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:45,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1356 [2020-10-12 20:57:45,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:57:45,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:45,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:45,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:45,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:45,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:45,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:45,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091243455] [2020-10-12 20:57:45,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:45,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:45,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968345222] [2020-10-12 20:57:45,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:45,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:45,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:45,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:45,283 INFO L87 Difference]: Start difference. First operand 1170 states and 1788 transitions. Second operand 5 states. [2020-10-12 20:57:46,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:46,108 INFO L93 Difference]: Finished difference Result 2463 states and 3738 transitions. [2020-10-12 20:57:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:46,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:57:46,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:46,113 INFO L225 Difference]: With dead ends: 2463 [2020-10-12 20:57:46,113 INFO L226 Difference]: Without dead ends: 1326 [2020-10-12 20:57:46,115 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 20:57:46,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-10-12 20:57:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1170. [2020-10-12 20:57:46,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-12 20:57:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1784 transitions. [2020-10-12 20:57:46,147 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1784 transitions. Word has length 102 [2020-10-12 20:57:46,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:46,147 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1784 transitions. [2020-10-12 20:57:46,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:46,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1784 transitions. [2020-10-12 20:57:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:57:46,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:46,149 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:46,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:57:46,150 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:46,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1637327642, now seen corresponding path program 1 times [2020-10-12 20:57:46,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:46,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623822378] [2020-10-12 20:57:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:57:46,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-12 20:57:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:57:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:57:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:46,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:46,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:46,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:46,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:46,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:46,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:57:46,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623822378] [2020-10-12 20:57:46,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:46,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:46,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514912285] [2020-10-12 20:57:46,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:46,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:46,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:46,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:46,576 INFO L87 Difference]: Start difference. First operand 1170 states and 1784 transitions. Second operand 5 states. [2020-10-12 20:57:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:47,341 INFO L93 Difference]: Finished difference Result 2545 states and 3878 transitions. [2020-10-12 20:57:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:47,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:57:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:47,344 INFO L225 Difference]: With dead ends: 2545 [2020-10-12 20:57:47,344 INFO L226 Difference]: Without dead ends: 1408 [2020-10-12 20:57:47,346 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 20:57:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2020-10-12 20:57:47,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1270. [2020-10-12 20:57:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1270 states. [2020-10-12 20:57:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1952 transitions. [2020-10-12 20:57:47,377 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1952 transitions. Word has length 102 [2020-10-12 20:57:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:47,378 INFO L479 AbstractCegarLoop]: Abstraction has 1270 states and 1952 transitions. [2020-10-12 20:57:47,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1952 transitions. [2020-10-12 20:57:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:57:47,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:47,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:47,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:57:47,380 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:47,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1875257273, now seen corresponding path program 1 times [2020-10-12 20:57:47,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:47,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486140760] [2020-10-12 20:57:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:47,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:47,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:49,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:49,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:57:49,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2375 [2020-10-12 20:57:49,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:57:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:57:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 20:57:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:49,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:49,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:49,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:49,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:50,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486140760] [2020-10-12 20:57:50,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:57:50,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:57:50,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730001314] [2020-10-12 20:57:50,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:57:50,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:50,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:57:50,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:57:50,017 INFO L87 Difference]: Start difference. First operand 1270 states and 1952 transitions. Second operand 9 states. [2020-10-12 20:57:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:52,197 INFO L93 Difference]: Finished difference Result 3832 states and 5911 transitions. [2020-10-12 20:57:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:57:52,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-12 20:57:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:52,203 INFO L225 Difference]: With dead ends: 3832 [2020-10-12 20:57:52,203 INFO L226 Difference]: Without dead ends: 3141 [2020-10-12 20:57:52,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:57:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2020-10-12 20:57:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2354. [2020-10-12 20:57:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:57:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3674 transitions. [2020-10-12 20:57:52,279 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3674 transitions. Word has length 108 [2020-10-12 20:57:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:52,280 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3674 transitions. [2020-10-12 20:57:52,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:57:52,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3674 transitions. [2020-10-12 20:57:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:57:52,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:52,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:52,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:57:52,284 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:52,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1760178501, now seen corresponding path program 1 times [2020-10-12 20:57:52,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:52,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622543242] [2020-10-12 20:57:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:57:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-12 20:57:52,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:57:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:52,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:52,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:52,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:52,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:52,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622543242] [2020-10-12 20:57:52,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:52,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:52,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612530274] [2020-10-12 20:57:52,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:52,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:52,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:52,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:52,866 INFO L87 Difference]: Start difference. First operand 2354 states and 3674 transitions. Second operand 5 states. [2020-10-12 20:57:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:53,752 INFO L93 Difference]: Finished difference Result 3940 states and 6082 transitions. [2020-10-12 20:57:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:53,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:57:53,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:53,764 INFO L225 Difference]: With dead ends: 3940 [2020-10-12 20:57:53,764 INFO L226 Difference]: Without dead ends: 2624 [2020-10-12 20:57:53,768 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 20:57:53,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-10-12 20:57:53,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2354. [2020-10-12 20:57:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:57:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3666 transitions. [2020-10-12 20:57:53,845 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3666 transitions. Word has length 108 [2020-10-12 20:57:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:53,847 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3666 transitions. [2020-10-12 20:57:53,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:53,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3666 transitions. [2020-10-12 20:57:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:57:53,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:53,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:53,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:57:53,852 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:53,853 INFO L82 PathProgramCache]: Analyzing trace with hash -57714330, now seen corresponding path program 1 times [2020-10-12 20:57:53,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:53,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321970305] [2020-10-12 20:57:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:53,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:54,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:54,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:57:54,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:54,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-12 20:57:54,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:54,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:57:54,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:54,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:54,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:54,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:54,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:54,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:54,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:54,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:54,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321970305] [2020-10-12 20:57:54,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:54,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:54,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467013503] [2020-10-12 20:57:54,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:54,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:54,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:54,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:54,463 INFO L87 Difference]: Start difference. First operand 2354 states and 3666 transitions. Second operand 5 states. [2020-10-12 20:57:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:55,299 INFO L93 Difference]: Finished difference Result 3932 states and 6058 transitions. [2020-10-12 20:57:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:55,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:57:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:55,306 INFO L225 Difference]: With dead ends: 3932 [2020-10-12 20:57:55,306 INFO L226 Difference]: Without dead ends: 2616 [2020-10-12 20:57:55,309 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 20:57:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2020-10-12 20:57:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2354. [2020-10-12 20:57:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:57:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3658 transitions. [2020-10-12 20:57:55,378 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3658 transitions. Word has length 109 [2020-10-12 20:57:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:55,378 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3658 transitions. [2020-10-12 20:57:55,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3658 transitions. [2020-10-12 20:57:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:57:55,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:55,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:55,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:57:55,382 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:55,382 INFO L82 PathProgramCache]: Analyzing trace with hash 928761676, now seen corresponding path program 1 times [2020-10-12 20:57:55,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:55,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678206367] [2020-10-12 20:57:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:55,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:55,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:55,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:57:55,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-12 20:57:55,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:57:55,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:56,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:56,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:56,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:56,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:56,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678206367] [2020-10-12 20:57:56,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:56,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:56,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863721317] [2020-10-12 20:57:56,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:56,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:56,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:56,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:56,034 INFO L87 Difference]: Start difference. First operand 2354 states and 3658 transitions. Second operand 5 states. [2020-10-12 20:57:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:56,881 INFO L93 Difference]: Finished difference Result 4905 states and 7578 transitions. [2020-10-12 20:57:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:56,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:57:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:56,889 INFO L225 Difference]: With dead ends: 4905 [2020-10-12 20:57:56,889 INFO L226 Difference]: Without dead ends: 2592 [2020-10-12 20:57:56,893 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 20:57:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2020-10-12 20:57:56,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2354. [2020-10-12 20:57:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:57:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3650 transitions. [2020-10-12 20:57:56,963 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3650 transitions. Word has length 109 [2020-10-12 20:57:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:56,963 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3650 transitions. [2020-10-12 20:57:56,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3650 transitions. [2020-10-12 20:57:56,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:57:56,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:56,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:56,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:57:56,967 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:56,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:56,968 INFO L82 PathProgramCache]: Analyzing trace with hash -531902083, now seen corresponding path program 1 times [2020-10-12 20:57:56,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:56,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948119863] [2020-10-12 20:57:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:58,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:57:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-10-12 20:57:58,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:57:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:58,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:58,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:58,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:58,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948119863] [2020-10-12 20:57:58,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:58,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:58,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25448046] [2020-10-12 20:57:58,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:58,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:58,442 INFO L87 Difference]: Start difference. First operand 2354 states and 3650 transitions. Second operand 5 states. [2020-10-12 20:57:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:59,255 INFO L93 Difference]: Finished difference Result 4905 states and 7562 transitions. [2020-10-12 20:57:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:59,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:57:59,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:59,259 INFO L225 Difference]: With dead ends: 4905 [2020-10-12 20:57:59,260 INFO L226 Difference]: Without dead ends: 2592 [2020-10-12 20:57:59,263 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 20:57:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2020-10-12 20:57:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2354. [2020-10-12 20:57:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:57:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3642 transitions. [2020-10-12 20:57:59,329 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3642 transitions. Word has length 111 [2020-10-12 20:57:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:59,330 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3642 transitions. [2020-10-12 20:57:59,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3642 transitions. [2020-10-12 20:57:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:57:59,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:59,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:59,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:57:59,333 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:59,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2043726425, now seen corresponding path program 1 times [2020-10-12 20:57:59,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:59,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428216860] [2020-10-12 20:57:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:59,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:00,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:58:00,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-12 20:58:00,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:58:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:00,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:00,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428216860] [2020-10-12 20:58:00,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:00,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:00,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354647983] [2020-10-12 20:58:00,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:00,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:00,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:00,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:00,091 INFO L87 Difference]: Start difference. First operand 2354 states and 3642 transitions. Second operand 5 states. [2020-10-12 20:58:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:00,972 INFO L93 Difference]: Finished difference Result 4905 states and 7546 transitions. [2020-10-12 20:58:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:00,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:58:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:00,976 INFO L225 Difference]: With dead ends: 4905 [2020-10-12 20:58:00,976 INFO L226 Difference]: Without dead ends: 2592 [2020-10-12 20:58:00,979 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 20:58:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2020-10-12 20:58:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2354. [2020-10-12 20:58:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:58:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3634 transitions. [2020-10-12 20:58:01,062 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3634 transitions. Word has length 112 [2020-10-12 20:58:01,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:01,063 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3634 transitions. [2020-10-12 20:58:01,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3634 transitions. [2020-10-12 20:58:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:58:01,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:01,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:01,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:58:01,065 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:01,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1957483561, now seen corresponding path program 1 times [2020-10-12 20:58:01,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:01,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318425161] [2020-10-12 20:58:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:02,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:02,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:58:02,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-12 20:58:02,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:58:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:02,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:02,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:02,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:02,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:02,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:02,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318425161] [2020-10-12 20:58:02,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:02,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:02,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438467804] [2020-10-12 20:58:02,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:02,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:02,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:02,411 INFO L87 Difference]: Start difference. First operand 2354 states and 3634 transitions. Second operand 5 states. [2020-10-12 20:58:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:03,276 INFO L93 Difference]: Finished difference Result 4873 states and 7490 transitions. [2020-10-12 20:58:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:03,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:58:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:03,280 INFO L225 Difference]: With dead ends: 4873 [2020-10-12 20:58:03,280 INFO L226 Difference]: Without dead ends: 2560 [2020-10-12 20:58:03,283 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 20:58:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2020-10-12 20:58:03,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2354. [2020-10-12 20:58:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:58:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3626 transitions. [2020-10-12 20:58:03,329 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3626 transitions. Word has length 112 [2020-10-12 20:58:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:03,329 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3626 transitions. [2020-10-12 20:58:03,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3626 transitions. [2020-10-12 20:58:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:58:03,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:03,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:03,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:58:03,332 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:03,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1670336159, now seen corresponding path program 1 times [2020-10-12 20:58:03,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:03,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522695335] [2020-10-12 20:58:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:04,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:58:04,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-12 20:58:04,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:58:04,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:04,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:04,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:04,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:04,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522695335] [2020-10-12 20:58:04,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:04,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:04,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575816560] [2020-10-12 20:58:04,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:04,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:04,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:04,145 INFO L87 Difference]: Start difference. First operand 2354 states and 3626 transitions. Second operand 5 states. [2020-10-12 20:58:04,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:04,989 INFO L93 Difference]: Finished difference Result 4857 states and 7458 transitions. [2020-10-12 20:58:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:04,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:58:04,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:04,993 INFO L225 Difference]: With dead ends: 4857 [2020-10-12 20:58:04,993 INFO L226 Difference]: Without dead ends: 2544 [2020-10-12 20:58:04,996 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 20:58:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2020-10-12 20:58:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2354. [2020-10-12 20:58:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:58:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3618 transitions. [2020-10-12 20:58:05,040 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3618 transitions. Word has length 113 [2020-10-12 20:58:05,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:05,040 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3618 transitions. [2020-10-12 20:58:05,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:05,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3618 transitions. [2020-10-12 20:58:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:58:05,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:05,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:05,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:58:05,043 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1492015947, now seen corresponding path program 1 times [2020-10-12 20:58:05,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:05,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550358619] [2020-10-12 20:58:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:05,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:58:05,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 919 [2020-10-12 20:58:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:58:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:06,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:06,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:06,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:06,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:06,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550358619] [2020-10-12 20:58:06,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:06,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:06,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272911513] [2020-10-12 20:58:06,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:06,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:06,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:06,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:06,075 INFO L87 Difference]: Start difference. First operand 2354 states and 3618 transitions. Second operand 5 states. [2020-10-12 20:58:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:06,948 INFO L93 Difference]: Finished difference Result 3860 states and 5898 transitions. [2020-10-12 20:58:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:06,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:58:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:06,952 INFO L225 Difference]: With dead ends: 3860 [2020-10-12 20:58:06,952 INFO L226 Difference]: Without dead ends: 2544 [2020-10-12 20:58:06,954 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 20:58:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2020-10-12 20:58:07,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2354. [2020-10-12 20:58:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:58:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3610 transitions. [2020-10-12 20:58:07,019 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3610 transitions. Word has length 114 [2020-10-12 20:58:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:07,019 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3610 transitions. [2020-10-12 20:58:07,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3610 transitions. [2020-10-12 20:58:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:58:07,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:07,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:07,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:58:07,027 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:07,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:07,027 INFO L82 PathProgramCache]: Analyzing trace with hash 225970900, now seen corresponding path program 1 times [2020-10-12 20:58:07,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:07,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290233423] [2020-10-12 20:58:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:07,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:07,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:07,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:58:07,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-12 20:58:07,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:58:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:07,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:07,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:07,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:07,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290233423] [2020-10-12 20:58:07,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:07,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:07,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368263197] [2020-10-12 20:58:07,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:07,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:07,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:07,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:07,861 INFO L87 Difference]: Start difference. First operand 2354 states and 3610 transitions. Second operand 5 states. [2020-10-12 20:58:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:08,741 INFO L93 Difference]: Finished difference Result 4857 states and 7426 transitions. [2020-10-12 20:58:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:08,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:58:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:08,745 INFO L225 Difference]: With dead ends: 4857 [2020-10-12 20:58:08,745 INFO L226 Difference]: Without dead ends: 2544 [2020-10-12 20:58:08,748 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 20:58:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2020-10-12 20:58:08,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2354. [2020-10-12 20:58:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 20:58:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 3602 transitions. [2020-10-12 20:58:08,798 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 3602 transitions. Word has length 114 [2020-10-12 20:58:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:08,799 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 3602 transitions. [2020-10-12 20:58:08,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 3602 transitions. [2020-10-12 20:58:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:58:08,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:08,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:08,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:58:08,802 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:08,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:08,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1249826566, now seen corresponding path program 1 times [2020-10-12 20:58:08,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:08,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146738928] [2020-10-12 20:58:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:58:09,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-12 20:58:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:58:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:09,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:09,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:09,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:09,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:09,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146738928] [2020-10-12 20:58:09,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:09,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:09,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402878925] [2020-10-12 20:58:09,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:09,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:09,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:09,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:09,582 INFO L87 Difference]: Start difference. First operand 2354 states and 3602 transitions. Second operand 5 states. [2020-10-12 20:58:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:10,450 INFO L93 Difference]: Finished difference Result 4632 states and 7051 transitions. [2020-10-12 20:58:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:10,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 20:58:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:10,453 INFO L225 Difference]: With dead ends: 4632 [2020-10-12 20:58:10,454 INFO L226 Difference]: Without dead ends: 2319 [2020-10-12 20:58:10,457 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 20:58:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-12 20:58:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2093. [2020-10-12 20:58:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-10-12 20:58:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 3195 transitions. [2020-10-12 20:58:10,499 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 3195 transitions. Word has length 115 [2020-10-12 20:58:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:10,499 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 3195 transitions. [2020-10-12 20:58:10,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 3195 transitions. [2020-10-12 20:58:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:58:10,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:10,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:10,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:58:10,502 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1637739786, now seen corresponding path program 1 times [2020-10-12 20:58:10,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:10,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605735903] [2020-10-12 20:58:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:11,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:58:11,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:11,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 960 [2020-10-12 20:58:11,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:58:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:11,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:11,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:11,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:11,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:11,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:11,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:11,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605735903] [2020-10-12 20:58:11,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:11,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:11,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790971273] [2020-10-12 20:58:11,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:11,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:11,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:11,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:11,553 INFO L87 Difference]: Start difference. First operand 2093 states and 3195 transitions. Second operand 5 states. [2020-10-12 20:58:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:12,453 INFO L93 Difference]: Finished difference Result 3575 states and 5439 transitions. [2020-10-12 20:58:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:12,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 20:58:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:12,456 INFO L225 Difference]: With dead ends: 3575 [2020-10-12 20:58:12,456 INFO L226 Difference]: Without dead ends: 2259 [2020-10-12 20:58:12,458 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 20:58:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2020-10-12 20:58:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2093. [2020-10-12 20:58:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-10-12 20:58:12,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 3191 transitions. [2020-10-12 20:58:12,500 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 3191 transitions. Word has length 115 [2020-10-12 20:58:12,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:12,500 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 3191 transitions. [2020-10-12 20:58:12,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:12,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 3191 transitions. [2020-10-12 20:58:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:58:12,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:12,502 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:12,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:58:12,502 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:12,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:12,503 INFO L82 PathProgramCache]: Analyzing trace with hash -197566463, now seen corresponding path program 1 times [2020-10-12 20:58:12,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:12,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439069515] [2020-10-12 20:58:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:12,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:14,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:58:16,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:16,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4309 [2020-10-12 20:58:16,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:58:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:58:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:58:16,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:16,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:16,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:16,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:16,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:16,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439069515] [2020-10-12 20:58:16,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:16,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:16,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118772805] [2020-10-12 20:58:16,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:16,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:16,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:16,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:16,911 INFO L87 Difference]: Start difference. First operand 2093 states and 3191 transitions. Second operand 5 states. [2020-10-12 20:58:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:17,780 INFO L93 Difference]: Finished difference Result 3249 states and 4898 transitions. [2020-10-12 20:58:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:17,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:58:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:17,783 INFO L225 Difference]: With dead ends: 3249 [2020-10-12 20:58:17,783 INFO L226 Difference]: Without dead ends: 1998 [2020-10-12 20:58:17,785 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 20:58:17,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2020-10-12 20:58:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1846. [2020-10-12 20:58:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1846 states. [2020-10-12 20:58:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2794 transitions. [2020-10-12 20:58:17,822 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2794 transitions. Word has length 116 [2020-10-12 20:58:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:17,822 INFO L479 AbstractCegarLoop]: Abstraction has 1846 states and 2794 transitions. [2020-10-12 20:58:17,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:17,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2794 transitions. [2020-10-12 20:58:17,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:58:17,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:17,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:17,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 20:58:17,825 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:17,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2075081074, now seen corresponding path program 1 times [2020-10-12 20:58:17,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:17,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406881986] [2020-10-12 20:58:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:18,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:18,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:58:18,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-12 20:58:18,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:58:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:58:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:18,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:18,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:18,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:18,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:18,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406881986] [2020-10-12 20:58:18,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:18,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:18,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489429237] [2020-10-12 20:58:18,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:18,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:18,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:18,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:18,246 INFO L87 Difference]: Start difference. First operand 1846 states and 2794 transitions. Second operand 5 states. [2020-10-12 20:58:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:19,280 INFO L93 Difference]: Finished difference Result 2760 states and 4173 transitions. [2020-10-12 20:58:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:19,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:58:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:19,284 INFO L225 Difference]: With dead ends: 2760 [2020-10-12 20:58:19,284 INFO L226 Difference]: Without dead ends: 2069 [2020-10-12 20:58:19,285 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 20:58:19,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-10-12 20:58:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1877. [2020-10-12 20:58:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-10-12 20:58:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2845 transitions. [2020-10-12 20:58:19,321 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2845 transitions. Word has length 121 [2020-10-12 20:58:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:19,321 INFO L479 AbstractCegarLoop]: Abstraction has 1877 states and 2845 transitions. [2020-10-12 20:58:19,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2845 transitions. [2020-10-12 20:58:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:58:19,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:19,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:19,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 20:58:19,324 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:19,324 INFO L82 PathProgramCache]: Analyzing trace with hash 678179709, now seen corresponding path program 1 times [2020-10-12 20:58:19,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:19,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905877354] [2020-10-12 20:58:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:19,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:58:19,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 20:58:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:58:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:58:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:19,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:19,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:19,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:19,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:19,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:19,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905877354] [2020-10-12 20:58:19,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:19,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:19,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826433578] [2020-10-12 20:58:19,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:19,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:19,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:19,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:19,731 INFO L87 Difference]: Start difference. First operand 1877 states and 2845 transitions. Second operand 5 states. [2020-10-12 20:58:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:20,747 INFO L93 Difference]: Finished difference Result 2775 states and 4196 transitions. [2020-10-12 20:58:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:20,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:58:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:20,750 INFO L225 Difference]: With dead ends: 2775 [2020-10-12 20:58:20,751 INFO L226 Difference]: Without dead ends: 2053 [2020-10-12 20:58:20,752 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 20:58:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2020-10-12 20:58:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1877. [2020-10-12 20:58:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-10-12 20:58:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2845 transitions. [2020-10-12 20:58:20,789 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2845 transitions. Word has length 122 [2020-10-12 20:58:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:20,789 INFO L479 AbstractCegarLoop]: Abstraction has 1877 states and 2845 transitions. [2020-10-12 20:58:20,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2845 transitions. [2020-10-12 20:58:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:58:20,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:20,792 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:20,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 20:58:20,792 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:20,792 INFO L82 PathProgramCache]: Analyzing trace with hash -183350738, now seen corresponding path program 1 times [2020-10-12 20:58:20,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:20,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791793851] [2020-10-12 20:58:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:21,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:58:21,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-10-12 20:58:21,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:58:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:58:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:21,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:21,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:21,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 20:58:21,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791793851] [2020-10-12 20:58:21,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:21,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:21,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245089692] [2020-10-12 20:58:21,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:21,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:21,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:21,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:21,835 INFO L87 Difference]: Start difference. First operand 1877 states and 2845 transitions. Second operand 5 states. [2020-10-12 20:58:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:22,737 INFO L93 Difference]: Finished difference Result 3478 states and 5286 transitions. [2020-10-12 20:58:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:22,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:58:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:22,740 INFO L225 Difference]: With dead ends: 3478 [2020-10-12 20:58:22,740 INFO L226 Difference]: Without dead ends: 2131 [2020-10-12 20:58:22,742 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 20:58:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2020-10-12 20:58:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 1943. [2020-10-12 20:58:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-10-12 20:58:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2965 transitions. [2020-10-12 20:58:22,777 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2965 transitions. Word has length 122 [2020-10-12 20:58:22,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:22,777 INFO L479 AbstractCegarLoop]: Abstraction has 1943 states and 2965 transitions. [2020-10-12 20:58:22,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:22,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2965 transitions. [2020-10-12 20:58:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:58:22,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:22,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:22,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 20:58:22,781 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:22,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1951372120, now seen corresponding path program 1 times [2020-10-12 20:58:22,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:22,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074319204] [2020-10-12 20:58:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:23,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:25,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:25,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:58:25,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2731 [2020-10-12 20:58:25,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:58:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:58:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:58:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:25,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:25,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:25,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:25,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:25,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:25,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:25,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:25,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:25,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:25,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:25,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074319204] [2020-10-12 20:58:25,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:25,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:58:25,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510905252] [2020-10-12 20:58:25,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:58:25,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:25,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:58:25,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:25,654 INFO L87 Difference]: Start difference. First operand 1943 states and 2965 transitions. Second operand 6 states. [2020-10-12 20:58:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:26,987 INFO L93 Difference]: Finished difference Result 3946 states and 6023 transitions. [2020-10-12 20:58:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:58:26,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-12 20:58:26,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:26,990 INFO L225 Difference]: With dead ends: 3946 [2020-10-12 20:58:26,990 INFO L226 Difference]: Without dead ends: 2533 [2020-10-12 20:58:26,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:58:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2020-10-12 20:58:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2005. [2020-10-12 20:58:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2005 states. [2020-10-12 20:58:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 3067 transitions. [2020-10-12 20:58:27,036 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 3067 transitions. Word has length 123 [2020-10-12 20:58:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:27,037 INFO L479 AbstractCegarLoop]: Abstraction has 2005 states and 3067 transitions. [2020-10-12 20:58:27,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:58:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 3067 transitions. [2020-10-12 20:58:27,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:58:27,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:27,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:27,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 20:58:27,039 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:27,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1878985562, now seen corresponding path program 1 times [2020-10-12 20:58:27,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:27,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92993459] [2020-10-12 20:58:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:31,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:31,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:58:31,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4236 [2020-10-12 20:58:31,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:58:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:58:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:58:31,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:31,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:31,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:31,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:31,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:31,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:31,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92993459] [2020-10-12 20:58:31,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:31,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:58:31,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987347716] [2020-10-12 20:58:31,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:58:31,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:31,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:58:31,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:31,398 INFO L87 Difference]: Start difference. First operand 2005 states and 3067 transitions. Second operand 6 states. [2020-10-12 20:58:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:32,580 INFO L93 Difference]: Finished difference Result 4059 states and 6223 transitions. [2020-10-12 20:58:32,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:58:32,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-12 20:58:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:32,583 INFO L225 Difference]: With dead ends: 4059 [2020-10-12 20:58:32,584 INFO L226 Difference]: Without dead ends: 2584 [2020-10-12 20:58:32,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:58:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-10-12 20:58:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1974. [2020-10-12 20:58:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2020-10-12 20:58:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3020 transitions. [2020-10-12 20:58:32,633 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3020 transitions. Word has length 123 [2020-10-12 20:58:32,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:32,634 INFO L479 AbstractCegarLoop]: Abstraction has 1974 states and 3020 transitions. [2020-10-12 20:58:32,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:58:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3020 transitions. [2020-10-12 20:58:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:58:32,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:32,636 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:32,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 20:58:32,636 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:32,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1606088290, now seen corresponding path program 1 times [2020-10-12 20:58:32,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:32,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596882139] [2020-10-12 20:58:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:33,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:58:33,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:33,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-12 20:58:33,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:58:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:58:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:33,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:33,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:33,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:33,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:33,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:33,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:33,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:33,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 20:58:33,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596882139] [2020-10-12 20:58:33,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:33,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:33,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407613677] [2020-10-12 20:58:33,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:33,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:33,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:33,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:33,769 INFO L87 Difference]: Start difference. First operand 1974 states and 3020 transitions. Second operand 5 states. [2020-10-12 20:58:34,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:34,617 INFO L93 Difference]: Finished difference Result 3486 states and 5329 transitions. [2020-10-12 20:58:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:34,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:58:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:34,620 INFO L225 Difference]: With dead ends: 3486 [2020-10-12 20:58:34,620 INFO L226 Difference]: Without dead ends: 2042 [2020-10-12 20:58:34,622 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 20:58:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2020-10-12 20:58:34,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1946. [2020-10-12 20:58:34,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2020-10-12 20:58:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2964 transitions. [2020-10-12 20:58:34,659 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2964 transitions. Word has length 123 [2020-10-12 20:58:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:34,659 INFO L479 AbstractCegarLoop]: Abstraction has 1946 states and 2964 transitions. [2020-10-12 20:58:34,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:34,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2964 transitions. [2020-10-12 20:58:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:58:34,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:34,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:34,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-12 20:58:34,662 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:34,662 INFO L82 PathProgramCache]: Analyzing trace with hash 944177139, now seen corresponding path program 1 times [2020-10-12 20:58:34,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:34,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651593413] [2020-10-12 20:58:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:37,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:37,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:58:37,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:37,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2582 [2020-10-12 20:58:37,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:37,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:58:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:58:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:58:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:37,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:37,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:37,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:37,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:37,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:37,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:37,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651593413] [2020-10-12 20:58:37,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:37,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:58:37,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307656004] [2020-10-12 20:58:37,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:58:37,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:37,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:58:37,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:37,373 INFO L87 Difference]: Start difference. First operand 1946 states and 2964 transitions. Second operand 6 states. [2020-10-12 20:58:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:38,589 INFO L93 Difference]: Finished difference Result 3766 states and 5732 transitions. [2020-10-12 20:58:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:58:38,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-12 20:58:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:38,593 INFO L225 Difference]: With dead ends: 3766 [2020-10-12 20:58:38,593 INFO L226 Difference]: Without dead ends: 2350 [2020-10-12 20:58:38,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:58:38,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-10-12 20:58:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1941. [2020-10-12 20:58:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2020-10-12 20:58:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2957 transitions. [2020-10-12 20:58:38,634 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2957 transitions. Word has length 124 [2020-10-12 20:58:38,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:38,634 INFO L479 AbstractCegarLoop]: Abstraction has 1941 states and 2957 transitions. [2020-10-12 20:58:38,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:58:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2957 transitions. [2020-10-12 20:58:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:58:38,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:38,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:38,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-12 20:58:38,637 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:38,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1299806159, now seen corresponding path program 1 times [2020-10-12 20:58:38,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:38,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107070091] [2020-10-12 20:58:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:38,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:43,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:43,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:58:43,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:58:43,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:58:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:58:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:58:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:43,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:43,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:43,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:43,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:43,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107070091] [2020-10-12 20:58:43,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:43,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:58:43,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317396336] [2020-10-12 20:58:43,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:58:43,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:43,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:58:43,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:43,757 INFO L87 Difference]: Start difference. First operand 1941 states and 2957 transitions. Second operand 6 states. [2020-10-12 20:58:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:44,922 INFO L93 Difference]: Finished difference Result 3680 states and 5601 transitions. [2020-10-12 20:58:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:58:44,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-12 20:58:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:44,925 INFO L225 Difference]: With dead ends: 3680 [2020-10-12 20:58:44,925 INFO L226 Difference]: Without dead ends: 2269 [2020-10-12 20:58:44,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:58:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-10-12 20:58:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 1893. [2020-10-12 20:58:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-10-12 20:58:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2873 transitions. [2020-10-12 20:58:44,977 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2873 transitions. Word has length 124 [2020-10-12 20:58:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:44,977 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2873 transitions. [2020-10-12 20:58:44,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:58:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2873 transitions. [2020-10-12 20:58:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:58:44,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:44,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:44,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-12 20:58:44,980 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:44,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2042459755, now seen corresponding path program 1 times [2020-10-12 20:58:44,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:44,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127271694] [2020-10-12 20:58:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:45,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 20:58:45,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-12 20:58:45,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:58:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:45,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:45,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:45,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127271694] [2020-10-12 20:58:45,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:45,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:45,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482157454] [2020-10-12 20:58:45,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:45,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:45,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:45,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:45,310 INFO L87 Difference]: Start difference. First operand 1893 states and 2873 transitions. Second operand 5 states. [2020-10-12 20:58:46,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:46,283 INFO L93 Difference]: Finished difference Result 2830 states and 4285 transitions. [2020-10-12 20:58:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:46,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 20:58:46,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:46,286 INFO L225 Difference]: With dead ends: 2830 [2020-10-12 20:58:46,286 INFO L226 Difference]: Without dead ends: 2100 [2020-10-12 20:58:46,288 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 20:58:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2020-10-12 20:58:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1970. [2020-10-12 20:58:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2020-10-12 20:58:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 3006 transitions. [2020-10-12 20:58:46,328 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 3006 transitions. Word has length 128 [2020-10-12 20:58:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:46,328 INFO L479 AbstractCegarLoop]: Abstraction has 1970 states and 3006 transitions. [2020-10-12 20:58:46,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 3006 transitions. [2020-10-12 20:58:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:58:46,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:46,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:46,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-12 20:58:46,331 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:46,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1325439743, now seen corresponding path program 1 times [2020-10-12 20:58:46,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:46,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456609491] [2020-10-12 20:58:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:46,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 20:58:46,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 20:58:46,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:58:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:58:46,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:46,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:46,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:46,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:46,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:46,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:46,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:46,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:46,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:46,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:46,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:46,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456609491] [2020-10-12 20:58:46,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:46,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:46,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751951116] [2020-10-12 20:58:46,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:46,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:46,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:46,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:46,668 INFO L87 Difference]: Start difference. First operand 1970 states and 3006 transitions. Second operand 5 states. [2020-10-12 20:58:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:47,645 INFO L93 Difference]: Finished difference Result 2893 states and 4395 transitions. [2020-10-12 20:58:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:47,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:58:47,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:47,649 INFO L225 Difference]: With dead ends: 2893 [2020-10-12 20:58:47,649 INFO L226 Difference]: Without dead ends: 2086 [2020-10-12 20:58:47,651 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 20:58:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2020-10-12 20:58:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1968. [2020-10-12 20:58:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1968 states. [2020-10-12 20:58:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 3004 transitions. [2020-10-12 20:58:47,691 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 3004 transitions. Word has length 129 [2020-10-12 20:58:47,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:47,691 INFO L479 AbstractCegarLoop]: Abstraction has 1968 states and 3004 transitions. [2020-10-12 20:58:47,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:47,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 3004 transitions. [2020-10-12 20:58:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:58:47,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:47,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:47,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-12 20:58:47,696 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:47,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1754361247, now seen corresponding path program 1 times [2020-10-12 20:58:47,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:47,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043212057] [2020-10-12 20:58:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:47,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:52,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:52,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:58:52,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:58:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:58:52,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 20:58:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:52,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:58:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:52,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:52,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:52,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:52,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:52,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:52,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:52,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:52,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043212057] [2020-10-12 20:58:52,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:52,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:58:52,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243155731] [2020-10-12 20:58:52,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:58:52,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:52,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:58:52,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:58:52,960 INFO L87 Difference]: Start difference. First operand 1968 states and 3004 transitions. Second operand 9 states. [2020-10-12 20:58:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:55,306 INFO L93 Difference]: Finished difference Result 3847 states and 5847 transitions. [2020-10-12 20:58:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:58:55,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-10-12 20:58:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:55,309 INFO L225 Difference]: With dead ends: 3847 [2020-10-12 20:58:55,309 INFO L226 Difference]: Without dead ends: 2409 [2020-10-12 20:58:55,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:58:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-10-12 20:58:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2056. [2020-10-12 20:58:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-10-12 20:58:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3154 transitions. [2020-10-12 20:58:55,358 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3154 transitions. Word has length 130 [2020-10-12 20:58:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:55,358 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 3154 transitions. [2020-10-12 20:58:55,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:58:55,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3154 transitions. [2020-10-12 20:58:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:58:55,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:55,361 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:55,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-12 20:58:55,361 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:55,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:55,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1008826621, now seen corresponding path program 1 times [2020-10-12 20:58:55,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:55,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320819279] [2020-10-12 20:58:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:55,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:00,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:59:00,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:59:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:59:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:59:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:00,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:00,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:00,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 8 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 20:59:00,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320819279] [2020-10-12 20:59:00,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:00,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:00,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844756646] [2020-10-12 20:59:00,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:00,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:00,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:00,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:00,812 INFO L87 Difference]: Start difference. First operand 2056 states and 3154 transitions. Second operand 9 states. [2020-10-12 20:59:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:02,845 INFO L93 Difference]: Finished difference Result 3761 states and 5703 transitions. [2020-10-12 20:59:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:59:02,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-10-12 20:59:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:02,849 INFO L225 Difference]: With dead ends: 3761 [2020-10-12 20:59:02,849 INFO L226 Difference]: Without dead ends: 2956 [2020-10-12 20:59:02,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 10 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 20:59:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-10-12 20:59:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2291. [2020-10-12 20:59:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-10-12 20:59:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3513 transitions. [2020-10-12 20:59:02,907 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3513 transitions. Word has length 130 [2020-10-12 20:59:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:02,907 INFO L479 AbstractCegarLoop]: Abstraction has 2291 states and 3513 transitions. [2020-10-12 20:59:02,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3513 transitions. [2020-10-12 20:59:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:59:02,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:02,910 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:02,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-12 20:59:02,910 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash 482087777, now seen corresponding path program 1 times [2020-10-12 20:59:02,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:02,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986323276] [2020-10-12 20:59:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:03,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:03,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:59:03,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 20:59:03,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:59:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:59:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 20:59:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:03,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:03,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:03,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:03,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:03,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:03,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 20:59:03,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986323276] [2020-10-12 20:59:03,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:03,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:59:03,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969243201] [2020-10-12 20:59:03,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:03,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:03,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:03,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:03,144 INFO L87 Difference]: Start difference. First operand 2291 states and 3513 transitions. Second operand 4 states. [2020-10-12 20:59:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:03,851 INFO L93 Difference]: Finished difference Result 6789 states and 10446 transitions. [2020-10-12 20:59:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:59:03,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-12 20:59:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:03,857 INFO L225 Difference]: With dead ends: 6789 [2020-10-12 20:59:03,857 INFO L226 Difference]: Without dead ends: 4539 [2020-10-12 20:59:03,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2020-10-12 20:59:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4539. [2020-10-12 20:59:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4539 states. [2020-10-12 20:59:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 6943 transitions. [2020-10-12 20:59:03,994 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 6943 transitions. Word has length 130 [2020-10-12 20:59:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:03,994 INFO L479 AbstractCegarLoop]: Abstraction has 4539 states and 6943 transitions. [2020-10-12 20:59:03,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 6943 transitions. [2020-10-12 20:59:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:59:03,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:04,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:04,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-12 20:59:04,000 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:04,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1212113525, now seen corresponding path program 1 times [2020-10-12 20:59:04,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:04,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57031331] [2020-10-12 20:59:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:59:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 20:59:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:59:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:59:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 20:59:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:04,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:04,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 20:59:04,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57031331] [2020-10-12 20:59:04,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:04,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:59:04,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280728785] [2020-10-12 20:59:04,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:04,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:04,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:04,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:04,250 INFO L87 Difference]: Start difference. First operand 4539 states and 6943 transitions. Second operand 4 states. [2020-10-12 20:59:05,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:05,092 INFO L93 Difference]: Finished difference Result 11287 states and 17307 transitions. [2020-10-12 20:59:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:59:05,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-12 20:59:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:05,099 INFO L225 Difference]: With dead ends: 11287 [2020-10-12 20:59:05,099 INFO L226 Difference]: Without dead ends: 6789 [2020-10-12 20:59:05,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2020-10-12 20:59:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 6787. [2020-10-12 20:59:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6787 states. [2020-10-12 20:59:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6787 states to 6787 states and 10397 transitions. [2020-10-12 20:59:05,259 INFO L78 Accepts]: Start accepts. Automaton has 6787 states and 10397 transitions. Word has length 132 [2020-10-12 20:59:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:05,259 INFO L479 AbstractCegarLoop]: Abstraction has 6787 states and 10397 transitions. [2020-10-12 20:59:05,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:05,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6787 states and 10397 transitions. [2020-10-12 20:59:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 20:59:05,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:05,263 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:05,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-12 20:59:05,263 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:05,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:05,263 INFO L82 PathProgramCache]: Analyzing trace with hash -100323078, now seen corresponding path program 1 times [2020-10-12 20:59:05,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:05,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613105205] [2020-10-12 20:59:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:05,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 20:59:05,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 20:59:05,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:59:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-12 20:59:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:59:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:05,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:05,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:05,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:05,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:59:05,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613105205] [2020-10-12 20:59:05,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:05,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:59:05,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133877978] [2020-10-12 20:59:05,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:05,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:05,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:05,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:05,512 INFO L87 Difference]: Start difference. First operand 6787 states and 10397 transitions. Second operand 4 states. [2020-10-12 20:59:06,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:06,233 INFO L93 Difference]: Finished difference Result 9039 states and 13865 transitions. [2020-10-12 20:59:06,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:59:06,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-12 20:59:06,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:06,244 INFO L225 Difference]: With dead ends: 9039 [2020-10-12 20:59:06,245 INFO L226 Difference]: Without dead ends: 9037 [2020-10-12 20:59:06,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9037 states. [2020-10-12 20:59:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9037 to 9035. [2020-10-12 20:59:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9035 states. [2020-10-12 20:59:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9035 states to 9035 states and 13857 transitions. [2020-10-12 20:59:06,515 INFO L78 Accepts]: Start accepts. Automaton has 9035 states and 13857 transitions. Word has length 133 [2020-10-12 20:59:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:06,515 INFO L479 AbstractCegarLoop]: Abstraction has 9035 states and 13857 transitions. [2020-10-12 20:59:06,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 9035 states and 13857 transitions. [2020-10-12 20:59:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 20:59:06,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:06,520 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:06,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-12 20:59:06,520 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:06,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:06,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1081751758, now seen corresponding path program 1 times [2020-10-12 20:59:06,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:06,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460473351] [2020-10-12 20:59:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:06,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:07,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 20:59:07,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:07,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-12 20:59:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:59:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:59:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:07,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:07,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:07,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:07,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:59:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:59:07,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460473351] [2020-10-12 20:59:07,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:07,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:07,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553550401] [2020-10-12 20:59:07,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:07,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:07,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:07,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:07,319 INFO L87 Difference]: Start difference. First operand 9035 states and 13857 transitions. Second operand 5 states. [2020-10-12 20:59:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:08,716 INFO L93 Difference]: Finished difference Result 20507 states and 31451 transitions. [2020-10-12 20:59:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:08,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-12 20:59:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:08,730 INFO L225 Difference]: With dead ends: 20507 [2020-10-12 20:59:08,730 INFO L226 Difference]: Without dead ends: 11513 [2020-10-12 20:59:08,744 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 20:59:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11513 states. [2020-10-12 20:59:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11513 to 9959. [2020-10-12 20:59:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9959 states. [2020-10-12 20:59:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9959 states to 9959 states and 15501 transitions. [2020-10-12 20:59:09,090 INFO L78 Accepts]: Start accepts. Automaton has 9959 states and 15501 transitions. Word has length 139 [2020-10-12 20:59:09,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:09,091 INFO L479 AbstractCegarLoop]: Abstraction has 9959 states and 15501 transitions. [2020-10-12 20:59:09,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:09,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9959 states and 15501 transitions. [2020-10-12 20:59:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 20:59:09,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:09,096 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:09,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-12 20:59:09,096 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:09,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:09,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1042616578, now seen corresponding path program 1 times [2020-10-12 20:59:09,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:09,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950534704] [2020-10-12 20:59:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:09,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:09,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 20:59:09,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-12 20:59:09,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:59:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:59:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:09,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:09,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:09,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:09,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:59:09,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950534704] [2020-10-12 20:59:09,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:09,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:09,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778161509] [2020-10-12 20:59:09,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:09,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:09,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:09,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:09,749 INFO L87 Difference]: Start difference. First operand 9959 states and 15501 transitions. Second operand 5 states. [2020-10-12 20:59:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:11,098 INFO L93 Difference]: Finished difference Result 21285 states and 32854 transitions. [2020-10-12 20:59:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:11,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-12 20:59:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:11,110 INFO L225 Difference]: With dead ends: 21285 [2020-10-12 20:59:11,110 INFO L226 Difference]: Without dead ends: 11367 [2020-10-12 20:59:11,121 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 20:59:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2020-10-12 20:59:11,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 9863. [2020-10-12 20:59:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9863 states. [2020-10-12 20:59:11,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9863 states to 9863 states and 15333 transitions. [2020-10-12 20:59:11,386 INFO L78 Accepts]: Start accepts. Automaton has 9863 states and 15333 transitions. Word has length 140 [2020-10-12 20:59:11,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:11,387 INFO L479 AbstractCegarLoop]: Abstraction has 9863 states and 15333 transitions. [2020-10-12 20:59:11,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 9863 states and 15333 transitions. [2020-10-12 20:59:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:59:11,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:11,392 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:11,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-12 20:59:11,392 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:11,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1892444944, now seen corresponding path program 1 times [2020-10-12 20:59:11,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:11,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412355735] [2020-10-12 20:59:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:11,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:15,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:15,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 20:59:15,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:15,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3761 [2020-10-12 20:59:15,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:59:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:59:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:59:15,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:15,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:15,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:15,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:15,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:15,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:59:15,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412355735] [2020-10-12 20:59:15,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:15,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:15,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247990981] [2020-10-12 20:59:15,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:15,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:15,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:15,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:15,254 INFO L87 Difference]: Start difference. First operand 9863 states and 15333 transitions. Second operand 5 states. [2020-10-12 20:59:16,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:16,531 INFO L93 Difference]: Finished difference Result 13849 states and 21398 transitions. [2020-10-12 20:59:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:16,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-12 20:59:16,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:16,544 INFO L225 Difference]: With dead ends: 13849 [2020-10-12 20:59:16,544 INFO L226 Difference]: Without dead ends: 10327 [2020-10-12 20:59:16,550 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 20:59:16,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10327 states. [2020-10-12 20:59:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10327 to 9863. [2020-10-12 20:59:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9863 states. [2020-10-12 20:59:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9863 states to 9863 states and 15325 transitions. [2020-10-12 20:59:16,859 INFO L78 Accepts]: Start accepts. Automaton has 9863 states and 15325 transitions. Word has length 142 [2020-10-12 20:59:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:16,860 INFO L479 AbstractCegarLoop]: Abstraction has 9863 states and 15325 transitions. [2020-10-12 20:59:16,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9863 states and 15325 transitions. [2020-10-12 20:59:16,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 20:59:16,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:16,865 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:16,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-12 20:59:16,865 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:16,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1861905017, now seen corresponding path program 1 times [2020-10-12 20:59:16,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:16,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71207443] [2020-10-12 20:59:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:19,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:21,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:21,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 20:59:21,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:59:21,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:59:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:59:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:22,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:22,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:22,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:22,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:22,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 23 proven. 92 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:22,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71207443] [2020-10-12 20:59:22,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:22,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:59:22,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790436062] [2020-10-12 20:59:22,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:59:22,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:59:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:59:22,197 INFO L87 Difference]: Start difference. First operand 9863 states and 15325 transitions. Second operand 10 states. [2020-10-12 20:59:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:24,556 INFO L93 Difference]: Finished difference Result 16047 states and 24693 transitions. [2020-10-12 20:59:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:59:24,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-10-12 20:59:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:24,573 INFO L225 Difference]: With dead ends: 16047 [2020-10-12 20:59:24,573 INFO L226 Difference]: Without dead ends: 12605 [2020-10-12 20:59:24,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:59:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12605 states. [2020-10-12 20:59:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12605 to 12321. [2020-10-12 20:59:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12321 states. [2020-10-12 20:59:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12321 states to 12321 states and 19007 transitions. [2020-10-12 20:59:24,983 INFO L78 Accepts]: Start accepts. Automaton has 12321 states and 19007 transitions. Word has length 143 [2020-10-12 20:59:24,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:24,983 INFO L479 AbstractCegarLoop]: Abstraction has 12321 states and 19007 transitions. [2020-10-12 20:59:24,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:59:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 12321 states and 19007 transitions. [2020-10-12 20:59:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 20:59:24,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:24,991 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2020-10-12 20:59:24,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-12 20:59:24,991 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:24,991 INFO L82 PathProgramCache]: Analyzing trace with hash -286534802, now seen corresponding path program 1 times [2020-10-12 20:59:24,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:24,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210904959] [2020-10-12 20:59:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking...