/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.07.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:53:20,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:53:20,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:53:20,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:53:20,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:53:20,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:53:20,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:53:20,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:53:20,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:53:20,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:53:20,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:53:20,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:53:20,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:53:20,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:53:20,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:53:20,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:53:20,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:53:20,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:53:20,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:53:20,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:53:20,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:53:20,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:53:20,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:53:20,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:53:20,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:53:20,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:53:20,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:53:20,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:53:20,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:53:20,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:53:20,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:53:20,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:53:20,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:53:20,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:53:20,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:53:20,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:53:20,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:53:20,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:53:20,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:53:20,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:53:20,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:53:20,965 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 20:53:21,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:53:21,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:53:21,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:53:21,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:53:21,013 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:53:21,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:53:21,014 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:53:21,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:53:21,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:53:21,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:53:21,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:53:21,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:53:21,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:53:21,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:53:21,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:53:21,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:53:21,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:53:21,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:53:21,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:53:21,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:53:21,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:53:21,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:53:21,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:53:21,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:53:21,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:53:21,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:53:21,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:53:21,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:53:21,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:53:21,020 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 20:53:21,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:53:21,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:53:21,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:53:21,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:53:21,333 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:53:21,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-2.c [2020-10-12 20:53:21,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7442b782/64aa01b28524415dba54bf42f96db6a4/FLAGc39d5dd83 [2020-10-12 20:53:21,967 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:53:21,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.07.i.cil-2.c [2020-10-12 20:53:21,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7442b782/64aa01b28524415dba54bf42f96db6a4/FLAGc39d5dd83 [2020-10-12 20:53:22,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7442b782/64aa01b28524415dba54bf42f96db6a4 [2020-10-12 20:53:22,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:53:22,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:53:22,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:53:22,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:53:22,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:53:22,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:53:22" (1/1) ... [2020-10-12 20:53:22,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cbf938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:22, skipping insertion in model container [2020-10-12 20:53:22,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:53:22" (1/1) ... [2020-10-12 20:53:22,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:53:22,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:53:22,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:53:22,959 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:53:23,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:53:23,121 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:53:23,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23 WrapperNode [2020-10-12 20:53:23,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:53:23,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:53:23,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:53:23,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:53:23,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (1/1) ... [2020-10-12 20:53:23,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (1/1) ... [2020-10-12 20:53:23,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (1/1) ... [2020-10-12 20:53:23,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (1/1) ... [2020-10-12 20:53:23,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (1/1) ... [2020-10-12 20:53:23,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (1/1) ... [2020-10-12 20:53:23,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (1/1) ... [2020-10-12 20:53:23,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:53:23,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:53:23,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:53:23,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:53:23,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (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 20:53:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:53:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:53:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:53:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:53:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:53:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:53:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:53:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:53:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:53:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:53:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:53:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:53:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:53:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:53:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:53:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:53:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:53:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:53:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:53:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:53:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:53:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:53:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:53:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:53:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:53:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:53:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:53:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:53:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:53:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:53:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:53:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:53:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:53:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:53:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:53:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:53:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:53:23,934 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:53:24,577 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:53:24,578 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:53:24,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:53:24,601 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:53:24,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:24 BoogieIcfgContainer [2020-10-12 20:53:24,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:53:24,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:53:24,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:53:24,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:53:24,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:53:22" (1/3) ... [2020-10-12 20:53:24,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e176968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:24, skipping insertion in model container [2020-10-12 20:53:24,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:53:23" (2/3) ... [2020-10-12 20:53:24,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e176968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:24, skipping insertion in model container [2020-10-12 20:53:24,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:24" (3/3) ... [2020-10-12 20:53:24,615 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-2.c [2020-10-12 20:53:24,626 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:53:24,635 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:53:24,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:53:24,676 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:53:24,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:53:24,677 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:53:24,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:53:24,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:53:24,677 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:53:24,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:53:24,678 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:53:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-12 20:53:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 20:53:24,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:24,712 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 20:53:24,713 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:24,720 INFO L82 PathProgramCache]: Analyzing trace with hash 237777211, now seen corresponding path program 1 times [2020-10-12 20:53:24,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:24,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971311210] [2020-10-12 20:53:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 20:53:26,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-12 20:53:26,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:26,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:26,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:26,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:53:26,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:53:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:26,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:26,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:53:26,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:26,621 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 20:53:26,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971311210] [2020-10-12 20:53:26,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:26,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:26,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135959861] [2020-10-12 20:53:26,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:26,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:26,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:26,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:26,652 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-12 20:53:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:27,880 INFO L93 Difference]: Finished difference Result 405 states and 682 transitions. [2020-10-12 20:53:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:27,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-12 20:53:27,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:27,898 INFO L225 Difference]: With dead ends: 405 [2020-10-12 20:53:27,898 INFO L226 Difference]: Without dead ends: 236 [2020-10-12 20:53:27,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-12 20:53:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 161. [2020-10-12 20:53:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 20:53:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 250 transitions. [2020-10-12 20:53:27,962 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 250 transitions. Word has length 41 [2020-10-12 20:53:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:27,962 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 250 transitions. [2020-10-12 20:53:27,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 250 transitions. [2020-10-12 20:53:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 20:53:27,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:27,965 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 20:53:27,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:53:27,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:27,966 INFO L82 PathProgramCache]: Analyzing trace with hash -637657458, now seen corresponding path program 1 times [2020-10-12 20:53:27,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:27,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896392819] [2020-10-12 20:53:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:28,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 20:53:28,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-12 20:53:28,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:53:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:28,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:28,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:28,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:28,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:28,588 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 20:53:28,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896392819] [2020-10-12 20:53:28,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:28,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:28,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064477227] [2020-10-12 20:53:28,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:28,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:28,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:28,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:28,592 INFO L87 Difference]: Start difference. First operand 161 states and 250 transitions. Second operand 5 states. [2020-10-12 20:53:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:29,578 INFO L93 Difference]: Finished difference Result 355 states and 541 transitions. [2020-10-12 20:53:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:29,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-12 20:53:29,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:29,581 INFO L225 Difference]: With dead ends: 355 [2020-10-12 20:53:29,581 INFO L226 Difference]: Without dead ends: 228 [2020-10-12 20:53:29,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:29,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-12 20:53:29,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 162. [2020-10-12 20:53:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:53:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 251 transitions. [2020-10-12 20:53:29,596 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 251 transitions. Word has length 42 [2020-10-12 20:53:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:29,597 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 251 transitions. [2020-10-12 20:53:29,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 251 transitions. [2020-10-12 20:53:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 20:53:29,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:29,600 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] [2020-10-12 20:53:29,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:53:29,600 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash -271066791, now seen corresponding path program 1 times [2020-10-12 20:53:29,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:29,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150102785] [2020-10-12 20:53:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:30,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 20:53:30,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-12 20:53:30,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:30,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:30,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:30,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:53:30,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:30,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:30,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:30,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:30,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:53:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:30,296 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 20:53:30,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150102785] [2020-10-12 20:53:30,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:30,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:30,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476266960] [2020-10-12 20:53:30,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:30,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:30,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:30,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:30,301 INFO L87 Difference]: Start difference. First operand 162 states and 251 transitions. Second operand 5 states. [2020-10-12 20:53:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:31,018 INFO L93 Difference]: Finished difference Result 306 states and 468 transitions. [2020-10-12 20:53:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:31,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-12 20:53:31,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:31,021 INFO L225 Difference]: With dead ends: 306 [2020-10-12 20:53:31,021 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:53:31,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:53:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-12 20:53:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-12 20:53:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-12 20:53:31,046 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 47 [2020-10-12 20:53:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:31,046 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-12 20:53:31,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-12 20:53:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 20:53:31,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:31,052 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 20:53:31,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:53:31,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:31,056 INFO L82 PathProgramCache]: Analyzing trace with hash -495950029, now seen corresponding path program 1 times [2020-10-12 20:53:31,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:31,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332252054] [2020-10-12 20:53:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:31,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 20:53:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-12 20:53:31,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:53:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 20:53:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:31,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:31,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:31,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:31,958 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 20:53:31,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332252054] [2020-10-12 20:53:31,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:31,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:31,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134846840] [2020-10-12 20:53:31,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:31,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:31,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:31,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:31,962 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-12 20:53:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:32,726 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-12 20:53:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:32,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-12 20:53:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:32,729 INFO L225 Difference]: With dead ends: 296 [2020-10-12 20:53:32,730 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:53:32,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:53:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-12 20:53:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-12 20:53:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-12 20:53:32,740 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 54 [2020-10-12 20:53:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:32,740 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-12 20:53:32,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-12 20:53:32,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:53:32,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:32,742 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 20:53:32,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:53:32,742 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:32,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:32,743 INFO L82 PathProgramCache]: Analyzing trace with hash -556125065, now seen corresponding path program 1 times [2020-10-12 20:53:32,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:32,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025148566] [2020-10-12 20:53:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:32,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:37,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:53:37,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:53:37,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:53:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:37,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:37,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:37,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:37,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:37,897 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 20:53:37,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025148566] [2020-10-12 20:53:37,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:37,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:37,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038701757] [2020-10-12 20:53:37,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:37,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:37,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:37,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:37,900 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-12 20:53:38,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:38,577 INFO L93 Difference]: Finished difference Result 296 states and 448 transitions. [2020-10-12 20:53:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:38,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:53:38,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:38,580 INFO L225 Difference]: With dead ends: 296 [2020-10-12 20:53:38,581 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 20:53:38,583 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 20:53:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 20:53:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2020-10-12 20:53:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:53:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 243 transitions. [2020-10-12 20:53:38,598 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 243 transitions. Word has length 55 [2020-10-12 20:53:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:38,599 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 243 transitions. [2020-10-12 20:53:38,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 243 transitions. [2020-10-12 20:53:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:53:38,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:38,601 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 20:53:38,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:53:38,602 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1471564928, now seen corresponding path program 1 times [2020-10-12 20:53:38,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:38,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142263928] [2020-10-12 20:53:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:39,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:53:39,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-12 20:53:39,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:39,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:39,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:39,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:39,353 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 20:53:39,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142263928] [2020-10-12 20:53:39,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:39,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:39,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986181338] [2020-10-12 20:53:39,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:39,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:39,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:39,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:39,356 INFO L87 Difference]: Start difference. First operand 162 states and 243 transitions. Second operand 5 states. [2020-10-12 20:53:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:40,033 INFO L93 Difference]: Finished difference Result 294 states and 445 transitions. [2020-10-12 20:53:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:40,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:53:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:40,036 INFO L225 Difference]: With dead ends: 294 [2020-10-12 20:53:40,036 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 20:53:40,037 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 20:53:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 20:53:40,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2020-10-12 20:53:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:53:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 242 transitions. [2020-10-12 20:53:40,045 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 242 transitions. Word has length 55 [2020-10-12 20:53:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:40,045 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 242 transitions. [2020-10-12 20:53:40,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 242 transitions. [2020-10-12 20:53:40,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 20:53:40,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:40,047 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 20:53:40,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:53:40,047 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:40,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:40,047 INFO L82 PathProgramCache]: Analyzing trace with hash -171966527, now seen corresponding path program 1 times [2020-10-12 20:53:40,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:40,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951799165] [2020-10-12 20:53:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:40,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:40,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 20:53:40,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-12 20:53:40,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:53:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:40,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:53:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:40,724 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 20:53:40,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951799165] [2020-10-12 20:53:40,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:40,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:40,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360770743] [2020-10-12 20:53:40,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:40,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:40,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:40,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:40,734 INFO L87 Difference]: Start difference. First operand 162 states and 242 transitions. Second operand 5 states. [2020-10-12 20:53:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:41,547 INFO L93 Difference]: Finished difference Result 293 states and 443 transitions. [2020-10-12 20:53:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:41,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-12 20:53:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:41,549 INFO L225 Difference]: With dead ends: 293 [2020-10-12 20:53:41,549 INFO L226 Difference]: Without dead ends: 166 [2020-10-12 20:53:41,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-12 20:53:41,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-10-12 20:53:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 20:53:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 241 transitions. [2020-10-12 20:53:41,559 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 241 transitions. Word has length 55 [2020-10-12 20:53:41,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:41,560 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 241 transitions. [2020-10-12 20:53:41,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 241 transitions. [2020-10-12 20:53:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 20:53:41,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:41,565 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 20:53:41,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:53:41,565 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:41,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:41,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1525299006, now seen corresponding path program 1 times [2020-10-12 20:53:41,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:41,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594386859] [2020-10-12 20:53:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:41,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:46,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 20:53:46,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:53:46,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:53:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:53:46,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:46,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:46,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:46,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:53:46,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:46,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:46,808 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 20:53:46,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594386859] [2020-10-12 20:53:46,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:46,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:53:46,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734499604] [2020-10-12 20:53:46,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:53:46,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:46,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:53:46,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:53:46,811 INFO L87 Difference]: Start difference. First operand 162 states and 241 transitions. Second operand 8 states. [2020-10-12 20:53:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:48,273 INFO L93 Difference]: Finished difference Result 435 states and 659 transitions. [2020-10-12 20:53:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:53:48,275 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 20:53:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:48,277 INFO L225 Difference]: With dead ends: 435 [2020-10-12 20:53:48,278 INFO L226 Difference]: Without dead ends: 308 [2020-10-12 20:53:48,279 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 20:53:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-12 20:53:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 262. [2020-10-12 20:53:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-12 20:53:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 401 transitions. [2020-10-12 20:53:48,295 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 401 transitions. Word has length 56 [2020-10-12 20:53:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:48,296 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 401 transitions. [2020-10-12 20:53:48,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:53:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 401 transitions. [2020-10-12 20:53:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 20:53:48,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:48,298 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 20:53:48,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:53:48,298 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:48,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:48,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1380545738, now seen corresponding path program 1 times [2020-10-12 20:53:48,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:48,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514912263] [2020-10-12 20:53:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:48,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:48,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 20:53:48,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-12 20:53:48,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:53:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:49,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:49,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:49,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:49,067 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 20:53:49,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514912263] [2020-10-12 20:53:49,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:49,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:49,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621614960] [2020-10-12 20:53:49,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:49,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:49,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:49,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:49,069 INFO L87 Difference]: Start difference. First operand 262 states and 401 transitions. Second operand 5 states. [2020-10-12 20:53:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:49,925 INFO L93 Difference]: Finished difference Result 571 states and 882 transitions. [2020-10-12 20:53:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:49,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-12 20:53:49,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:49,930 INFO L225 Difference]: With dead ends: 571 [2020-10-12 20:53:49,932 INFO L226 Difference]: Without dead ends: 444 [2020-10-12 20:53:49,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:49,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-12 20:53:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 318. [2020-10-12 20:53:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-12 20:53:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 501 transitions. [2020-10-12 20:53:49,951 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 501 transitions. Word has length 58 [2020-10-12 20:53:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:49,951 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 501 transitions. [2020-10-12 20:53:49,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 501 transitions. [2020-10-12 20:53:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 20:53:49,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:49,953 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 20:53:49,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:53:49,953 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:49,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash 428428511, now seen corresponding path program 1 times [2020-10-12 20:53:49,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:49,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432591160] [2020-10-12 20:53:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:50,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 20:53:50,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-12 20:53:50,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:53:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:50,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:50,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:50,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:50,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:50,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:50,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:50,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:50,618 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 20:53:50,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432591160] [2020-10-12 20:53:50,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:50,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:50,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987298762] [2020-10-12 20:53:50,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:50,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:50,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:50,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:50,621 INFO L87 Difference]: Start difference. First operand 318 states and 501 transitions. Second operand 5 states. [2020-10-12 20:53:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:51,457 INFO L93 Difference]: Finished difference Result 591 states and 917 transitions. [2020-10-12 20:53:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:51,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-12 20:53:51,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:51,461 INFO L225 Difference]: With dead ends: 591 [2020-10-12 20:53:51,461 INFO L226 Difference]: Without dead ends: 436 [2020-10-12 20:53:51,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-12 20:53:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 320. [2020-10-12 20:53:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-12 20:53:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 503 transitions. [2020-10-12 20:53:51,477 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 503 transitions. Word has length 59 [2020-10-12 20:53:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:51,478 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 503 transitions. [2020-10-12 20:53:51,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 503 transitions. [2020-10-12 20:53:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:53:51,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:51,480 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] [2020-10-12 20:53:51,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:53:51,480 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:51,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1202588248, now seen corresponding path program 1 times [2020-10-12 20:53:51,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:51,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380307047] [2020-10-12 20:53:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:51,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:53:51,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-12 20:53:51,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:53:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:51,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:51,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:51,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:51,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:51,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:51,932 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 20:53:51,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380307047] [2020-10-12 20:53:51,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:51,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:51,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808390251] [2020-10-12 20:53:51,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:51,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:51,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:51,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:51,936 INFO L87 Difference]: Start difference. First operand 320 states and 503 transitions. Second operand 5 states. [2020-10-12 20:53:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:52,654 INFO L93 Difference]: Finished difference Result 631 states and 989 transitions. [2020-10-12 20:53:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:52,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:53:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:52,658 INFO L225 Difference]: With dead ends: 631 [2020-10-12 20:53:52,658 INFO L226 Difference]: Without dead ends: 346 [2020-10-12 20:53:52,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:52,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-12 20:53:52,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 306. [2020-10-12 20:53:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-12 20:53:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 477 transitions. [2020-10-12 20:53:52,671 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 477 transitions. Word has length 64 [2020-10-12 20:53:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:52,672 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 477 transitions. [2020-10-12 20:53:52,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 477 transitions. [2020-10-12 20:53:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:53:52,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:52,673 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 20:53:52,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:53:52,674 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:52,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2080998156, now seen corresponding path program 1 times [2020-10-12 20:53:52,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:52,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890810492] [2020-10-12 20:53:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:57,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:53:57,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 20:53:57,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:53:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:53:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:57,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:57,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:57,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:57,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:57,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:57,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:57,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:57,786 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 20:53:57,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890810492] [2020-10-12 20:53:57,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:57,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:53:57,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698327592] [2020-10-12 20:53:57,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:53:57,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:57,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:53:57,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:57,788 INFO L87 Difference]: Start difference. First operand 306 states and 477 transitions. Second operand 6 states. [2020-10-12 20:53:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:58,386 INFO L93 Difference]: Finished difference Result 502 states and 779 transitions. [2020-10-12 20:53:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:53:58,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-12 20:53:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:58,391 INFO L225 Difference]: With dead ends: 502 [2020-10-12 20:53:58,393 INFO L226 Difference]: Without dead ends: 323 [2020-10-12 20:53:58,394 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 20:53:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-12 20:53:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 313. [2020-10-12 20:53:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 20:53:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 485 transitions. [2020-10-12 20:53:58,414 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 485 transitions. Word has length 69 [2020-10-12 20:53:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:58,414 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 485 transitions. [2020-10-12 20:53:58,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:53:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 485 transitions. [2020-10-12 20:53:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:53:58,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:58,417 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 20:53:58,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:53:58,417 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:58,418 INFO L82 PathProgramCache]: Analyzing trace with hash -414801760, now seen corresponding path program 1 times [2020-10-12 20:53:58,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:58,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493653169] [2020-10-12 20:53:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:03,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:54:03,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:03,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4786 [2020-10-12 20:54:03,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:54:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:03,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:03,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:03,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:03,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:03,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:03,328 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 20:54:03,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493653169] [2020-10-12 20:54:03,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:03,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:03,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002252979] [2020-10-12 20:54:03,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:03,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:03,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:03,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:03,331 INFO L87 Difference]: Start difference. First operand 313 states and 485 transitions. Second operand 5 states. [2020-10-12 20:54:04,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:04,167 INFO L93 Difference]: Finished difference Result 504 states and 779 transitions. [2020-10-12 20:54:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:04,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-12 20:54:04,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:04,172 INFO L225 Difference]: With dead ends: 504 [2020-10-12 20:54:04,172 INFO L226 Difference]: Without dead ends: 317 [2020-10-12 20:54:04,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-12 20:54:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2020-10-12 20:54:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 20:54:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 484 transitions. [2020-10-12 20:54:04,194 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 484 transitions. Word has length 69 [2020-10-12 20:54:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:04,195 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 484 transitions. [2020-10-12 20:54:04,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 484 transitions. [2020-10-12 20:54:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:54:04,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:04,201 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 20:54:04,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:54:04,202 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 113704563, now seen corresponding path program 1 times [2020-10-12 20:54:04,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:04,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335666003] [2020-10-12 20:54:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:04,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:08,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 20:54:08,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3978 [2020-10-12 20:54:08,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:54:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:08,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:08,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:54:08,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:08,295 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 20:54:08,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335666003] [2020-10-12 20:54:08,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:08,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:08,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472420638] [2020-10-12 20:54:08,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:08,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:08,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:08,297 INFO L87 Difference]: Start difference. First operand 313 states and 484 transitions. Second operand 5 states. [2020-10-12 20:54:08,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:08,945 INFO L93 Difference]: Finished difference Result 504 states and 778 transitions. [2020-10-12 20:54:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:08,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-12 20:54:08,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:08,947 INFO L225 Difference]: With dead ends: 504 [2020-10-12 20:54:08,948 INFO L226 Difference]: Without dead ends: 317 [2020-10-12 20:54:08,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-12 20:54:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2020-10-12 20:54:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 20:54:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 483 transitions. [2020-10-12 20:54:08,964 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 483 transitions. Word has length 70 [2020-10-12 20:54:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:08,965 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 483 transitions. [2020-10-12 20:54:08,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 483 transitions. [2020-10-12 20:54:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:54:08,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:08,966 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 20:54:08,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:54:08,967 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1720200571, now seen corresponding path program 1 times [2020-10-12 20:54:08,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:08,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731841687] [2020-10-12 20:54:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:09,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:12,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:54:12,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:12,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3521 [2020-10-12 20:54:12,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:12,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:12,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:12,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:12,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:12,579 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 20:54:12,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731841687] [2020-10-12 20:54:12,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:12,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:12,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444864504] [2020-10-12 20:54:12,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:12,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:12,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:12,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:12,581 INFO L87 Difference]: Start difference. First operand 313 states and 483 transitions. Second operand 5 states. [2020-10-12 20:54:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:13,179 INFO L93 Difference]: Finished difference Result 504 states and 777 transitions. [2020-10-12 20:54:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:13,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-12 20:54:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:13,182 INFO L225 Difference]: With dead ends: 504 [2020-10-12 20:54:13,182 INFO L226 Difference]: Without dead ends: 317 [2020-10-12 20:54:13,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-12 20:54:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2020-10-12 20:54:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 20:54:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 482 transitions. [2020-10-12 20:54:13,197 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 482 transitions. Word has length 71 [2020-10-12 20:54:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:13,197 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 482 transitions. [2020-10-12 20:54:13,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 482 transitions. [2020-10-12 20:54:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:54:13,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:13,199 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 20:54:13,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:54:13,199 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:13,200 INFO L82 PathProgramCache]: Analyzing trace with hash 740008964, now seen corresponding path program 1 times [2020-10-12 20:54:13,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:13,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074614812] [2020-10-12 20:54:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:13,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:54:13,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-12 20:54:13,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:54:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:54:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:13,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,792 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 20:54:13,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074614812] [2020-10-12 20:54:13,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:13,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:13,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455162003] [2020-10-12 20:54:13,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:13,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:13,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:13,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:13,794 INFO L87 Difference]: Start difference. First operand 313 states and 482 transitions. Second operand 5 states. [2020-10-12 20:54:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:14,658 INFO L93 Difference]: Finished difference Result 583 states and 897 transitions. [2020-10-12 20:54:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:14,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-12 20:54:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:14,662 INFO L225 Difference]: With dead ends: 583 [2020-10-12 20:54:14,662 INFO L226 Difference]: Without dead ends: 425 [2020-10-12 20:54:14,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-12 20:54:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 341. [2020-10-12 20:54:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-12 20:54:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 532 transitions. [2020-10-12 20:54:14,677 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 532 transitions. Word has length 71 [2020-10-12 20:54:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:14,677 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 532 transitions. [2020-10-12 20:54:14,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 532 transitions. [2020-10-12 20:54:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:54:14,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:14,679 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 20:54:14,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:54:14,680 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash -896101946, now seen corresponding path program 1 times [2020-10-12 20:54:14,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:14,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097823110] [2020-10-12 20:54:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:54:19,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 20:54:19,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:19,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:19,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:19,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:54:19,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:19,770 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 20:54:19,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097823110] [2020-10-12 20:54:19,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:19,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:19,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053736356] [2020-10-12 20:54:19,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:19,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:19,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:19,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:19,772 INFO L87 Difference]: Start difference. First operand 341 states and 532 transitions. Second operand 5 states. [2020-10-12 20:54:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:20,408 INFO L93 Difference]: Finished difference Result 575 states and 889 transitions. [2020-10-12 20:54:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:20,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:54:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:20,411 INFO L225 Difference]: With dead ends: 575 [2020-10-12 20:54:20,411 INFO L226 Difference]: Without dead ends: 379 [2020-10-12 20:54:20,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-12 20:54:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 350. [2020-10-12 20:54:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-12 20:54:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 541 transitions. [2020-10-12 20:54:20,424 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 541 transitions. Word has length 72 [2020-10-12 20:54:20,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:20,424 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 541 transitions. [2020-10-12 20:54:20,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 541 transitions. [2020-10-12 20:54:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:54:20,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:20,426 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 20:54:20,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:54:20,426 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:20,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:20,426 INFO L82 PathProgramCache]: Analyzing trace with hash 2046624997, now seen corresponding path program 1 times [2020-10-12 20:54:20,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:20,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110314480] [2020-10-12 20:54:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:20,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:54:20,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-12 20:54:20,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:20,912 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 20:54:20,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110314480] [2020-10-12 20:54:20,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:20,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:20,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98734487] [2020-10-12 20:54:20,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:20,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:20,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:20,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:20,914 INFO L87 Difference]: Start difference. First operand 350 states and 541 transitions. Second operand 5 states. [2020-10-12 20:54:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:21,526 INFO L93 Difference]: Finished difference Result 574 states and 883 transitions. [2020-10-12 20:54:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:21,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:54:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:21,530 INFO L225 Difference]: With dead ends: 574 [2020-10-12 20:54:21,531 INFO L226 Difference]: Without dead ends: 379 [2020-10-12 20:54:21,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-12 20:54:21,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 350. [2020-10-12 20:54:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-12 20:54:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 539 transitions. [2020-10-12 20:54:21,546 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 539 transitions. Word has length 72 [2020-10-12 20:54:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:21,546 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 539 transitions. [2020-10-12 20:54:21,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 539 transitions. [2020-10-12 20:54:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:54:21,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:21,548 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 20:54:21,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:54:21,548 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:21,548 INFO L82 PathProgramCache]: Analyzing trace with hash -511943408, now seen corresponding path program 1 times [2020-10-12 20:54:21,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:21,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829871438] [2020-10-12 20:54:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:21,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:54:21,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 20:54:21,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:54:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:54:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:22,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:22,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:22,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:22,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:22,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:22,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:22,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:22,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:22,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:22,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:22,017 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 20:54:22,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829871438] [2020-10-12 20:54:22,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:22,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:22,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166223325] [2020-10-12 20:54:22,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:22,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:22,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:22,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:22,025 INFO L87 Difference]: Start difference. First operand 350 states and 539 transitions. Second operand 5 states. [2020-10-12 20:54:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:22,983 INFO L93 Difference]: Finished difference Result 737 states and 1140 transitions. [2020-10-12 20:54:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:22,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:54:22,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:22,986 INFO L225 Difference]: With dead ends: 737 [2020-10-12 20:54:22,987 INFO L226 Difference]: Without dead ends: 542 [2020-10-12 20:54:22,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:22,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-12 20:54:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 380. [2020-10-12 20:54:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-12 20:54:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 591 transitions. [2020-10-12 20:54:23,001 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 591 transitions. Word has length 72 [2020-10-12 20:54:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:23,001 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 591 transitions. [2020-10-12 20:54:23,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 591 transitions. [2020-10-12 20:54:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:54:23,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:23,003 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 20:54:23,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:54:23,003 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:23,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:23,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1300674682, now seen corresponding path program 1 times [2020-10-12 20:54:23,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:23,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054821800] [2020-10-12 20:54:23,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:23,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:54:23,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-12 20:54:23,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:54:23,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:23,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:23,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:23,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:23,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:23,763 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 20:54:23,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054821800] [2020-10-12 20:54:23,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:23,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:23,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488676470] [2020-10-12 20:54:23,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:23,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:23,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:23,765 INFO L87 Difference]: Start difference. First operand 380 states and 591 transitions. Second operand 5 states. [2020-10-12 20:54:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:24,337 INFO L93 Difference]: Finished difference Result 603 states and 931 transitions. [2020-10-12 20:54:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:24,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:54:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:24,341 INFO L225 Difference]: With dead ends: 603 [2020-10-12 20:54:24,341 INFO L226 Difference]: Without dead ends: 407 [2020-10-12 20:54:24,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:24,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-12 20:54:24,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 380. [2020-10-12 20:54:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-12 20:54:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 589 transitions. [2020-10-12 20:54:24,356 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 589 transitions. Word has length 73 [2020-10-12 20:54:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:24,356 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 589 transitions. [2020-10-12 20:54:24,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 589 transitions. [2020-10-12 20:54:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:54:24,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:24,358 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 20:54:24,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:54:24,358 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:24,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:24,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1890807129, now seen corresponding path program 1 times [2020-10-12 20:54:24,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:24,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022491315] [2020-10-12 20:54:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:24,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:54:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-12 20:54:24,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:54:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:24,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:24,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:24,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:24,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:24,803 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 20:54:24,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022491315] [2020-10-12 20:54:24,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:24,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:24,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305802402] [2020-10-12 20:54:24,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:24,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:24,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:24,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:24,805 INFO L87 Difference]: Start difference. First operand 380 states and 589 transitions. Second operand 5 states. [2020-10-12 20:54:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:25,422 INFO L93 Difference]: Finished difference Result 760 states and 1182 transitions. [2020-10-12 20:54:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:25,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:54:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:25,425 INFO L225 Difference]: With dead ends: 760 [2020-10-12 20:54:25,425 INFO L226 Difference]: Without dead ends: 405 [2020-10-12 20:54:25,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-12 20:54:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 380. [2020-10-12 20:54:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-12 20:54:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 587 transitions. [2020-10-12 20:54:25,442 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 587 transitions. Word has length 73 [2020-10-12 20:54:25,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:25,442 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 587 transitions. [2020-10-12 20:54:25,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 587 transitions. [2020-10-12 20:54:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:54:25,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:25,444 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 20:54:25,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:54:25,444 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:25,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:25,444 INFO L82 PathProgramCache]: Analyzing trace with hash 890618898, now seen corresponding path program 1 times [2020-10-12 20:54:25,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:25,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67326068] [2020-10-12 20:54:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:30,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:54:30,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:54:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:54:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:54:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:30,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:30,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:30,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:30,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:30,569 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 20:54:30,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67326068] [2020-10-12 20:54:30,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:30,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:30,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452583173] [2020-10-12 20:54:30,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:30,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:30,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:30,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:30,571 INFO L87 Difference]: Start difference. First operand 380 states and 587 transitions. Second operand 5 states. [2020-10-12 20:54:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:31,441 INFO L93 Difference]: Finished difference Result 762 states and 1169 transitions. [2020-10-12 20:54:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:31,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:54:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:31,447 INFO L225 Difference]: With dead ends: 762 [2020-10-12 20:54:31,448 INFO L226 Difference]: Without dead ends: 556 [2020-10-12 20:54:31,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-10-12 20:54:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 396. [2020-10-12 20:54:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-12 20:54:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 609 transitions. [2020-10-12 20:54:31,462 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 609 transitions. Word has length 73 [2020-10-12 20:54:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:31,462 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 609 transitions. [2020-10-12 20:54:31,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 609 transitions. [2020-10-12 20:54:31,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:54:31,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:31,464 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 20:54:31,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:54:31,464 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:31,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash -461621455, now seen corresponding path program 1 times [2020-10-12 20:54:31,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:31,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679487096] [2020-10-12 20:54:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:34,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 20:54:34,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2618 [2020-10-12 20:54:34,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:54:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:34,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:34,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:34,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:34,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:34,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:34,152 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 20:54:34,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679487096] [2020-10-12 20:54:34,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:34,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:34,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193360979] [2020-10-12 20:54:34,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:34,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:34,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:34,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:34,154 INFO L87 Difference]: Start difference. First operand 396 states and 609 transitions. Second operand 5 states. [2020-10-12 20:54:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:34,708 INFO L93 Difference]: Finished difference Result 640 states and 983 transitions. [2020-10-12 20:54:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:34,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:54:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:34,711 INFO L225 Difference]: With dead ends: 640 [2020-10-12 20:54:34,711 INFO L226 Difference]: Without dead ends: 399 [2020-10-12 20:54:34,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-12 20:54:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 396. [2020-10-12 20:54:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-12 20:54:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 608 transitions. [2020-10-12 20:54:34,727 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 608 transitions. Word has length 73 [2020-10-12 20:54:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:34,727 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 608 transitions. [2020-10-12 20:54:34,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 608 transitions. [2020-10-12 20:54:34,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:54:34,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:34,729 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 20:54:34,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:54:34,729 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:34,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1465335169, now seen corresponding path program 1 times [2020-10-12 20:54:34,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:34,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769433623] [2020-10-12 20:54:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:34,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:34,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:34,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:54:34,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-12 20:54:34,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:54:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:35,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:35,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:35,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:35,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:35,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:35,024 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 20:54:35,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769433623] [2020-10-12 20:54:35,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:35,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:35,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784285199] [2020-10-12 20:54:35,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:35,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:35,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:35,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:35,026 INFO L87 Difference]: Start difference. First operand 396 states and 608 transitions. Second operand 5 states. [2020-10-12 20:54:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:35,907 INFO L93 Difference]: Finished difference Result 800 states and 1232 transitions. [2020-10-12 20:54:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:35,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:54:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:35,910 INFO L225 Difference]: With dead ends: 800 [2020-10-12 20:54:35,910 INFO L226 Difference]: Without dead ends: 588 [2020-10-12 20:54:35,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-12 20:54:35,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 428. [2020-10-12 20:54:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-12 20:54:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 660 transitions. [2020-10-12 20:54:35,923 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 660 transitions. Word has length 80 [2020-10-12 20:54:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:35,924 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 660 transitions. [2020-10-12 20:54:35,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 660 transitions. [2020-10-12 20:54:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:54:35,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:35,925 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 20:54:35,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:54:35,926 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:35,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1537721727, now seen corresponding path program 1 times [2020-10-12 20:54:35,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:35,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648371342] [2020-10-12 20:54:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:54:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-12 20:54:36,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:36,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:36,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:36,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:54:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:36,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:36,567 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 20:54:36,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648371342] [2020-10-12 20:54:36,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:36,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:36,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250964297] [2020-10-12 20:54:36,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:36,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:36,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:36,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:36,568 INFO L87 Difference]: Start difference. First operand 428 states and 660 transitions. Second operand 5 states. [2020-10-12 20:54:37,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:37,312 INFO L93 Difference]: Finished difference Result 937 states and 1454 transitions. [2020-10-12 20:54:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:37,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:54:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:37,317 INFO L225 Difference]: With dead ends: 937 [2020-10-12 20:54:37,318 INFO L226 Difference]: Without dead ends: 534 [2020-10-12 20:54:37,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-10-12 20:54:37,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 476. [2020-10-12 20:54:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-12 20:54:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 744 transitions. [2020-10-12 20:54:37,338 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 744 transitions. Word has length 80 [2020-10-12 20:54:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:37,339 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 744 transitions. [2020-10-12 20:54:37,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 744 transitions. [2020-10-12 20:54:37,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:54:37,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:37,341 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 20:54:37,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:54:37,343 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1894533686, now seen corresponding path program 1 times [2020-10-12 20:54:37,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:37,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7337668] [2020-10-12 20:54:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:37,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:37,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:54:37,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-12 20:54:37,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:54:37,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:37,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:37,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:37,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:37,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:37,820 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 20:54:37,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7337668] [2020-10-12 20:54:37,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:37,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:37,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040160238] [2020-10-12 20:54:37,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:37,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:37,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:37,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:37,822 INFO L87 Difference]: Start difference. First operand 476 states and 744 transitions. Second operand 5 states. [2020-10-12 20:54:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:38,677 INFO L93 Difference]: Finished difference Result 880 states and 1369 transitions. [2020-10-12 20:54:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:38,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:54:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:38,682 INFO L225 Difference]: With dead ends: 880 [2020-10-12 20:54:38,682 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:54:38,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:38,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:54:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 504. [2020-10-12 20:54:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-12 20:54:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 796 transitions. [2020-10-12 20:54:38,699 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 796 transitions. Word has length 81 [2020-10-12 20:54:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:38,699 INFO L479 AbstractCegarLoop]: Abstraction has 504 states and 796 transitions. [2020-10-12 20:54:38,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 796 transitions. [2020-10-12 20:54:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:54:38,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:38,701 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] [2020-10-12 20:54:38,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:54:38,702 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:38,702 INFO L82 PathProgramCache]: Analyzing trace with hash 839608221, now seen corresponding path program 1 times [2020-10-12 20:54:38,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:38,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521117943] [2020-10-12 20:54:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:38,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:54:38,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 20:54:38,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:54:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:38,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:38,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:38,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:39,008 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 20:54:39,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521117943] [2020-10-12 20:54:39,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:39,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:39,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047836184] [2020-10-12 20:54:39,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:39,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:39,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:39,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:39,009 INFO L87 Difference]: Start difference. First operand 504 states and 796 transitions. Second operand 5 states. [2020-10-12 20:54:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:39,838 INFO L93 Difference]: Finished difference Result 1107 states and 1740 transitions. [2020-10-12 20:54:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:39,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-12 20:54:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:39,841 INFO L225 Difference]: With dead ends: 1107 [2020-10-12 20:54:39,842 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:54:39,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:54:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 524. [2020-10-12 20:54:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-12 20:54:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 834 transitions. [2020-10-12 20:54:39,857 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 834 transitions. Word has length 86 [2020-10-12 20:54:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:39,858 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 834 transitions. [2020-10-12 20:54:39,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:39,858 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 834 transitions. [2020-10-12 20:54:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:54:39,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:39,860 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 20:54:39,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:54:39,860 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:39,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:39,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1653806746, now seen corresponding path program 1 times [2020-10-12 20:54:39,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:39,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128840080] [2020-10-12 20:54:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:44,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:54:44,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:44,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4227 [2020-10-12 20:54:44,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 20:54:44,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:44,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:44,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:44,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:44,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:44,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:44,163 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 20:54:44,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128840080] [2020-10-12 20:54:44,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:44,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:44,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902897812] [2020-10-12 20:54:44,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:44,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:44,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:44,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:44,166 INFO L87 Difference]: Start difference. First operand 524 states and 834 transitions. Second operand 5 states. [2020-10-12 20:54:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:44,776 INFO L93 Difference]: Finished difference Result 863 states and 1361 transitions. [2020-10-12 20:54:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:44,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:54:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:44,780 INFO L225 Difference]: With dead ends: 863 [2020-10-12 20:54:44,781 INFO L226 Difference]: Without dead ends: 558 [2020-10-12 20:54:44,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-12 20:54:44,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 524. [2020-10-12 20:54:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-12 20:54:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 832 transitions. [2020-10-12 20:54:44,797 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 832 transitions. Word has length 87 [2020-10-12 20:54:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:44,797 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 832 transitions. [2020-10-12 20:54:44,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 832 transitions. [2020-10-12 20:54:44,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:54:44,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:44,799 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 20:54:44,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:54:44,799 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:44,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:44,800 INFO L82 PathProgramCache]: Analyzing trace with hash 251043747, now seen corresponding path program 1 times [2020-10-12 20:54:44,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:44,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987413395] [2020-10-12 20:54:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:45,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:45,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:54:45,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-12 20:54:45,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:54:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:45,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:45,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:45,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:45,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:45,103 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 20:54:45,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987413395] [2020-10-12 20:54:45,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:45,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:45,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900327935] [2020-10-12 20:54:45,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:45,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:45,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:45,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:45,105 INFO L87 Difference]: Start difference. First operand 524 states and 832 transitions. Second operand 5 states. [2020-10-12 20:54:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:45,939 INFO L93 Difference]: Finished difference Result 1117 states and 1759 transitions. [2020-10-12 20:54:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:45,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:54:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:45,942 INFO L225 Difference]: With dead ends: 1117 [2020-10-12 20:54:45,942 INFO L226 Difference]: Without dead ends: 618 [2020-10-12 20:54:45,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-12 20:54:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 524. [2020-10-12 20:54:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-12 20:54:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 832 transitions. [2020-10-12 20:54:45,958 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 832 transitions. Word has length 87 [2020-10-12 20:54:45,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:45,958 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 832 transitions. [2020-10-12 20:54:45,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:45,958 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 832 transitions. [2020-10-12 20:54:45,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:54:45,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:45,960 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 20:54:45,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:54:45,960 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:45,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2104830043, now seen corresponding path program 1 times [2020-10-12 20:54:45,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:45,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766026237] [2020-10-12 20:54:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:50,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:54:50,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4041 [2020-10-12 20:54:50,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:54:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:50,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:50,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:50,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:50,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:50,117 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 20:54:50,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766026237] [2020-10-12 20:54:50,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:50,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:50,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400375423] [2020-10-12 20:54:50,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:50,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:50,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:50,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:50,119 INFO L87 Difference]: Start difference. First operand 524 states and 832 transitions. Second operand 5 states. [2020-10-12 20:54:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:50,760 INFO L93 Difference]: Finished difference Result 1526 states and 2434 transitions. [2020-10-12 20:54:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:50,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:54:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:50,766 INFO L225 Difference]: With dead ends: 1526 [2020-10-12 20:54:50,766 INFO L226 Difference]: Without dead ends: 1027 [2020-10-12 20:54:50,768 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 20:54:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-10-12 20:54:50,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1025. [2020-10-12 20:54:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-10-12 20:54:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1612 transitions. [2020-10-12 20:54:50,800 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1612 transitions. Word has length 88 [2020-10-12 20:54:50,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:50,800 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1612 transitions. [2020-10-12 20:54:50,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:50,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1612 transitions. [2020-10-12 20:54:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:54:50,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:50,803 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 20:54:50,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:54:50,804 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:50,804 INFO L82 PathProgramCache]: Analyzing trace with hash 651797223, now seen corresponding path program 1 times [2020-10-12 20:54:50,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:50,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977662115] [2020-10-12 20:54:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:54,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:54,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:54:54,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:54,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3714 [2020-10-12 20:54:54,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:54:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:54,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:54,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:54,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:54,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:54,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:54,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:54,622 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 20:54:54,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977662115] [2020-10-12 20:54:54,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:54,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:54,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316415876] [2020-10-12 20:54:54,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:54,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:54,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:54,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:54,623 INFO L87 Difference]: Start difference. First operand 1025 states and 1612 transitions. Second operand 5 states. [2020-10-12 20:54:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:55,585 INFO L93 Difference]: Finished difference Result 1871 states and 2923 transitions. [2020-10-12 20:54:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:55,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:54:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:55,591 INFO L225 Difference]: With dead ends: 1871 [2020-10-12 20:54:55,591 INFO L226 Difference]: Without dead ends: 1325 [2020-10-12 20:54:55,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:55,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-10-12 20:54:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1027. [2020-10-12 20:54:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-10-12 20:54:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1608 transitions. [2020-10-12 20:54:55,620 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1608 transitions. Word has length 88 [2020-10-12 20:54:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:55,621 INFO L479 AbstractCegarLoop]: Abstraction has 1027 states and 1608 transitions. [2020-10-12 20:54:55,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:55,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1608 transitions. [2020-10-12 20:54:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:54:55,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:55,624 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 20:54:55,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:54:55,624 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:55,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1672126401, now seen corresponding path program 1 times [2020-10-12 20:54:55,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:55,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974206998] [2020-10-12 20:54:55,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:00,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:55:00,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:55:00,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:55:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:55:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:00,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:00,835 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 20:55:00,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974206998] [2020-10-12 20:55:00,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:00,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:00,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686266451] [2020-10-12 20:55:00,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:00,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:00,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:00,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:00,837 INFO L87 Difference]: Start difference. First operand 1027 states and 1608 transitions. Second operand 9 states. [2020-10-12 20:55:02,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:02,361 INFO L93 Difference]: Finished difference Result 2123 states and 3313 transitions. [2020-10-12 20:55:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:55:02,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-12 20:55:02,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:02,368 INFO L225 Difference]: With dead ends: 2123 [2020-10-12 20:55:02,368 INFO L226 Difference]: Without dead ends: 1575 [2020-10-12 20:55:02,370 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 20:55:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-10-12 20:55:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1045. [2020-10-12 20:55:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-10-12 20:55:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1629 transitions. [2020-10-12 20:55:02,397 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1629 transitions. Word has length 89 [2020-10-12 20:55:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:02,398 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1629 transitions. [2020-10-12 20:55:02,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1629 transitions. [2020-10-12 20:55:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:55:02,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:02,400 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 20:55:02,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:55:02,401 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1010686648, now seen corresponding path program 1 times [2020-10-12 20:55:02,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:02,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290521572] [2020-10-12 20:55:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:55:04,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-10-12 20:55:04,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 20:55:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:55:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:04,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:04,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:04,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:04,128 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 20:55:04,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290521572] [2020-10-12 20:55:04,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:04,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:04,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599757724] [2020-10-12 20:55:04,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:04,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:04,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:04,130 INFO L87 Difference]: Start difference. First operand 1045 states and 1629 transitions. Second operand 5 states. [2020-10-12 20:55:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:05,041 INFO L93 Difference]: Finished difference Result 1778 states and 2764 transitions. [2020-10-12 20:55:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:05,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:55:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:05,048 INFO L225 Difference]: With dead ends: 1778 [2020-10-12 20:55:05,048 INFO L226 Difference]: Without dead ends: 1230 [2020-10-12 20:55:05,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-12 20:55:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1102. [2020-10-12 20:55:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-10-12 20:55:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1724 transitions. [2020-10-12 20:55:05,083 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1724 transitions. Word has length 89 [2020-10-12 20:55:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:05,084 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1724 transitions. [2020-10-12 20:55:05,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1724 transitions. [2020-10-12 20:55:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:55:05,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:05,087 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 20:55:05,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:55:05,087 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1600819095, now seen corresponding path program 1 times [2020-10-12 20:55:05,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:05,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956437125] [2020-10-12 20:55:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:06,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:55:06,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-12 20:55:06,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:55:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:55:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:06,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:06,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:06,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:06,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:06,578 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 20:55:06,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956437125] [2020-10-12 20:55:06,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:06,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:06,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475846577] [2020-10-12 20:55:06,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:06,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:06,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:06,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:06,580 INFO L87 Difference]: Start difference. First operand 1102 states and 1724 transitions. Second operand 5 states. [2020-10-12 20:55:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:07,387 INFO L93 Difference]: Finished difference Result 2585 states and 4049 transitions. [2020-10-12 20:55:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:07,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:55:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:07,395 INFO L225 Difference]: With dead ends: 2585 [2020-10-12 20:55:07,395 INFO L226 Difference]: Without dead ends: 1522 [2020-10-12 20:55:07,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2020-10-12 20:55:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1170. [2020-10-12 20:55:07,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-12 20:55:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1820 transitions. [2020-10-12 20:55:07,428 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1820 transitions. Word has length 89 [2020-10-12 20:55:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:07,429 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1820 transitions. [2020-10-12 20:55:07,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1820 transitions. [2020-10-12 20:55:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:55:07,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:07,431 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] [2020-10-12 20:55:07,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:55:07,432 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash 867772271, now seen corresponding path program 1 times [2020-10-12 20:55:07,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:07,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993333321] [2020-10-12 20:55:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:10,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:55:10,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3046 [2020-10-12 20:55:10,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:55:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:55:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:10,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:10,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:10,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:10,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:10,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:10,570 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 20:55:10,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993333321] [2020-10-12 20:55:10,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:10,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:10,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094513290] [2020-10-12 20:55:10,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:10,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:10,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:10,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:10,572 INFO L87 Difference]: Start difference. First operand 1170 states and 1820 transitions. Second operand 5 states. [2020-10-12 20:55:11,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:11,354 INFO L93 Difference]: Finished difference Result 2160 states and 3349 transitions. [2020-10-12 20:55:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:11,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:55:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:11,361 INFO L225 Difference]: With dead ends: 2160 [2020-10-12 20:55:11,362 INFO L226 Difference]: Without dead ends: 1520 [2020-10-12 20:55:11,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2020-10-12 20:55:11,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1166. [2020-10-12 20:55:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1796 transitions. [2020-10-12 20:55:11,393 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1796 transitions. Word has length 94 [2020-10-12 20:55:11,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:11,393 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1796 transitions. [2020-10-12 20:55:11,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1796 transitions. [2020-10-12 20:55:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:55:11,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:11,396 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 20:55:11,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:55:11,396 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:11,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1853724601, now seen corresponding path program 1 times [2020-10-12 20:55:11,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:11,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174949533] [2020-10-12 20:55:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:11,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:14,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:14,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:55:14,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3555 [2020-10-12 20:55:14,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:55:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:55:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:15,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:15,053 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 20:55:15,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174949533] [2020-10-12 20:55:15,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:15,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:15,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990684124] [2020-10-12 20:55:15,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:15,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:15,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:15,055 INFO L87 Difference]: Start difference. First operand 1166 states and 1796 transitions. Second operand 5 states. [2020-10-12 20:55:15,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:15,865 INFO L93 Difference]: Finished difference Result 2499 states and 3808 transitions. [2020-10-12 20:55:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:15,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:55:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:15,870 INFO L225 Difference]: With dead ends: 2499 [2020-10-12 20:55:15,870 INFO L226 Difference]: Without dead ends: 1326 [2020-10-12 20:55:15,872 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 20:55:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-10-12 20:55:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1166. [2020-10-12 20:55:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1792 transitions. [2020-10-12 20:55:15,898 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1792 transitions. Word has length 94 [2020-10-12 20:55:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:15,898 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1792 transitions. [2020-10-12 20:55:15,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1792 transitions. [2020-10-12 20:55:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:55:15,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:15,900 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 20:55:15,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:55:15,901 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1500636219, now seen corresponding path program 1 times [2020-10-12 20:55:15,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:15,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961420575] [2020-10-12 20:55:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:15,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:19,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:55:19,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3503 [2020-10-12 20:55:19,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:55:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:55:19,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:19,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:19,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:19,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:19,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:19,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:19,494 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 20:55:19,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961420575] [2020-10-12 20:55:19,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:19,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:19,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472462945] [2020-10-12 20:55:19,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:19,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:19,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:19,497 INFO L87 Difference]: Start difference. First operand 1166 states and 1792 transitions. Second operand 5 states. [2020-10-12 20:55:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:20,246 INFO L93 Difference]: Finished difference Result 2431 states and 3714 transitions. [2020-10-12 20:55:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:20,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:55:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:20,251 INFO L225 Difference]: With dead ends: 2431 [2020-10-12 20:55:20,251 INFO L226 Difference]: Without dead ends: 1258 [2020-10-12 20:55:20,253 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 20:55:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-12 20:55:20,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1166. [2020-10-12 20:55:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1788 transitions. [2020-10-12 20:55:20,279 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1788 transitions. Word has length 94 [2020-10-12 20:55:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:20,279 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1788 transitions. [2020-10-12 20:55:20,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1788 transitions. [2020-10-12 20:55:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:55:20,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:20,281 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] [2020-10-12 20:55:20,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:55:20,281 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1747552883, now seen corresponding path program 1 times [2020-10-12 20:55:20,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:20,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890583440] [2020-10-12 20:55:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:21,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:55:21,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:21,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-12 20:55:21,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:55:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:21,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:21,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:21,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:21,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:21,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:21,206 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 20:55:21,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890583440] [2020-10-12 20:55:21,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:21,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:21,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334837707] [2020-10-12 20:55:21,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:21,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:21,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:21,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:21,207 INFO L87 Difference]: Start difference. First operand 1166 states and 1788 transitions. Second operand 5 states. [2020-10-12 20:55:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:22,006 INFO L93 Difference]: Finished difference Result 1962 states and 2976 transitions. [2020-10-12 20:55:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:22,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 20:55:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:22,013 INFO L225 Difference]: With dead ends: 1962 [2020-10-12 20:55:22,013 INFO L226 Difference]: Without dead ends: 1322 [2020-10-12 20:55:22,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-10-12 20:55:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1166. [2020-10-12 20:55:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1784 transitions. [2020-10-12 20:55:22,036 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1784 transitions. Word has length 99 [2020-10-12 20:55:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:22,036 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1784 transitions. [2020-10-12 20:55:22,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1784 transitions. [2020-10-12 20:55:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:55:22,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:22,038 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] [2020-10-12 20:55:22,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:55:22,038 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:22,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:22,038 INFO L82 PathProgramCache]: Analyzing trace with hash -209212853, now seen corresponding path program 1 times [2020-10-12 20:55:22,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:22,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260854973] [2020-10-12 20:55:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:55:22,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-12 20:55:22,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:55:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:23,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:23,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:23,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:23,051 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 20:55:23,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260854973] [2020-10-12 20:55:23,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:23,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:23,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103736273] [2020-10-12 20:55:23,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:23,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:23,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:23,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:23,053 INFO L87 Difference]: Start difference. First operand 1166 states and 1784 transitions. Second operand 5 states. [2020-10-12 20:55:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:23,789 INFO L93 Difference]: Finished difference Result 1894 states and 2884 transitions. [2020-10-12 20:55:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:23,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 20:55:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:23,797 INFO L225 Difference]: With dead ends: 1894 [2020-10-12 20:55:23,802 INFO L226 Difference]: Without dead ends: 1254 [2020-10-12 20:55:23,804 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 20:55:23,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2020-10-12 20:55:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1166. [2020-10-12 20:55:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1780 transitions. [2020-10-12 20:55:23,830 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1780 transitions. Word has length 99 [2020-10-12 20:55:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:23,830 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1780 transitions. [2020-10-12 20:55:23,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1780 transitions. [2020-10-12 20:55:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:55:23,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:23,832 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 20:55:23,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:55:23,833 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1487890754, now seen corresponding path program 1 times [2020-10-12 20:55:23,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:23,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598854033] [2020-10-12 20:55:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:24,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:55:24,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:24,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-10-12 20:55:24,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:55:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:24,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:24,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:24,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:55:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:24,929 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 20:55:24,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598854033] [2020-10-12 20:55:24,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:24,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:24,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68080709] [2020-10-12 20:55:24,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:24,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:24,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:24,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:24,930 INFO L87 Difference]: Start difference. First operand 1166 states and 1780 transitions. Second operand 5 states. [2020-10-12 20:55:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:25,760 INFO L93 Difference]: Finished difference Result 2455 states and 3722 transitions. [2020-10-12 20:55:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:25,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:55:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:25,771 INFO L225 Difference]: With dead ends: 2455 [2020-10-12 20:55:25,771 INFO L226 Difference]: Without dead ends: 1322 [2020-10-12 20:55:25,773 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 20:55:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-10-12 20:55:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1166. [2020-10-12 20:55:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-12 20:55:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1776 transitions. [2020-10-12 20:55:25,805 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1776 transitions. Word has length 102 [2020-10-12 20:55:25,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:25,805 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1776 transitions. [2020-10-12 20:55:25,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1776 transitions. [2020-10-12 20:55:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:55:25,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:25,807 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 20:55:25,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:55:25,808 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:25,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1420291132, now seen corresponding path program 1 times [2020-10-12 20:55:25,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:25,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636299826] [2020-10-12 20:55:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:25,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:26,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:55:26,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-12 20:55:26,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:55:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:55:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:26,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:26,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:26,259 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 20:55:26,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636299826] [2020-10-12 20:55:26,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:26,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:26,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680418245] [2020-10-12 20:55:26,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:26,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:26,260 INFO L87 Difference]: Start difference. First operand 1166 states and 1776 transitions. Second operand 5 states. [2020-10-12 20:55:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:27,007 INFO L93 Difference]: Finished difference Result 2537 states and 3862 transitions. [2020-10-12 20:55:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:27,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:55:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:27,011 INFO L225 Difference]: With dead ends: 2537 [2020-10-12 20:55:27,011 INFO L226 Difference]: Without dead ends: 1404 [2020-10-12 20:55:27,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:27,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-12 20:55:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1266. [2020-10-12 20:55:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-10-12 20:55:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1944 transitions. [2020-10-12 20:55:27,046 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1944 transitions. Word has length 102 [2020-10-12 20:55:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:27,046 INFO L479 AbstractCegarLoop]: Abstraction has 1266 states and 1944 transitions. [2020-10-12 20:55:27,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1944 transitions. [2020-10-12 20:55:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:55:27,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:27,049 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 20:55:27,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:55:27,049 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1073573527, now seen corresponding path program 1 times [2020-10-12 20:55:27,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:27,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448864663] [2020-10-12 20:55:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:29,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:55:29,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2242 [2020-10-12 20:55:29,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:55:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 20:55:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:29,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:29,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:29,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:29,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:29,596 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 20:55:29,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448864663] [2020-10-12 20:55:29,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:29,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:29,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840097312] [2020-10-12 20:55:29,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:29,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:29,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:29,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:29,598 INFO L87 Difference]: Start difference. First operand 1266 states and 1944 transitions. Second operand 9 states. [2020-10-12 20:55:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:31,774 INFO L93 Difference]: Finished difference Result 3816 states and 5879 transitions. [2020-10-12 20:55:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:55:31,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-12 20:55:31,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:31,782 INFO L225 Difference]: With dead ends: 3816 [2020-10-12 20:55:31,783 INFO L226 Difference]: Without dead ends: 3125 [2020-10-12 20:55:31,785 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 20:55:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-12 20:55:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2342. [2020-10-12 20:55:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3650 transitions. [2020-10-12 20:55:31,835 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3650 transitions. Word has length 108 [2020-10-12 20:55:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:31,835 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3650 transitions. [2020-10-12 20:55:31,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3650 transitions. [2020-10-12 20:55:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:55:31,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:31,839 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 20:55:31,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:55:31,839 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1733105049, now seen corresponding path program 1 times [2020-10-12 20:55:31,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:31,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791033564] [2020-10-12 20:55:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:32,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:55:32,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-12 20:55:32,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:55:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:32,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:32,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:32,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:32,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:32,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:32,552 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 20:55:32,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791033564] [2020-10-12 20:55:32,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:32,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:32,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216693805] [2020-10-12 20:55:32,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:32,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:32,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:32,554 INFO L87 Difference]: Start difference. First operand 2342 states and 3650 transitions. Second operand 5 states. [2020-10-12 20:55:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:33,407 INFO L93 Difference]: Finished difference Result 3924 states and 6050 transitions. [2020-10-12 20:55:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:33,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:55:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:33,414 INFO L225 Difference]: With dead ends: 3924 [2020-10-12 20:55:33,414 INFO L226 Difference]: Without dead ends: 2612 [2020-10-12 20:55:33,417 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 20:55:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2020-10-12 20:55:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2342. [2020-10-12 20:55:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3642 transitions. [2020-10-12 20:55:33,495 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3642 transitions. Word has length 108 [2020-10-12 20:55:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:33,497 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3642 transitions. [2020-10-12 20:55:33,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3642 transitions. [2020-10-12 20:55:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:55:33,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:33,500 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 20:55:33,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:55:33,501 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:33,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:33,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1843312188, now seen corresponding path program 1 times [2020-10-12 20:55:33,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:33,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562732962] [2020-10-12 20:55:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:33,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:34,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:34,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:55:34,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:34,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-12 20:55:34,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:34,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:55:34,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:34,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:34,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:34,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:34,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:34,073 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 20:55:34,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562732962] [2020-10-12 20:55:34,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:34,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:34,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380037124] [2020-10-12 20:55:34,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:34,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:34,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:34,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:34,074 INFO L87 Difference]: Start difference. First operand 2342 states and 3642 transitions. Second operand 5 states. [2020-10-12 20:55:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:34,915 INFO L93 Difference]: Finished difference Result 3916 states and 6026 transitions. [2020-10-12 20:55:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:34,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:55:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:34,923 INFO L225 Difference]: With dead ends: 3916 [2020-10-12 20:55:34,924 INFO L226 Difference]: Without dead ends: 2604 [2020-10-12 20:55:34,927 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 20:55:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2020-10-12 20:55:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2342. [2020-10-12 20:55:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3634 transitions. [2020-10-12 20:55:35,005 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3634 transitions. Word has length 109 [2020-10-12 20:55:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:35,005 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3634 transitions. [2020-10-12 20:55:35,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3634 transitions. [2020-10-12 20:55:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:55:35,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:35,008 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 20:55:35,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:55:35,009 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash -856836182, now seen corresponding path program 1 times [2020-10-12 20:55:35,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:35,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435244335] [2020-10-12 20:55:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:35,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:55:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-12 20:55:35,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:55:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:35,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:35,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:35,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:35,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:35,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:35,560 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 20:55:35,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435244335] [2020-10-12 20:55:35,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:35,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:35,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250556202] [2020-10-12 20:55:35,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:35,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:35,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:35,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:35,562 INFO L87 Difference]: Start difference. First operand 2342 states and 3634 transitions. Second operand 5 states. [2020-10-12 20:55:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:36,423 INFO L93 Difference]: Finished difference Result 4881 states and 7530 transitions. [2020-10-12 20:55:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:36,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:55:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:36,431 INFO L225 Difference]: With dead ends: 4881 [2020-10-12 20:55:36,431 INFO L226 Difference]: Without dead ends: 2580 [2020-10-12 20:55:36,435 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 20:55:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-12 20:55:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2342. [2020-10-12 20:55:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3626 transitions. [2020-10-12 20:55:36,505 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3626 transitions. Word has length 109 [2020-10-12 20:55:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:36,505 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3626 transitions. [2020-10-12 20:55:36,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3626 transitions. [2020-10-12 20:55:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:55:36,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:36,508 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 20:55:36,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:55:36,509 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:36,509 INFO L82 PathProgramCache]: Analyzing trace with hash 892244443, now seen corresponding path program 1 times [2020-10-12 20:55:36,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:36,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402639444] [2020-10-12 20:55:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:37,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:55:37,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-10-12 20:55:37,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:55:37,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:37,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:37,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:37,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:37,931 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 20:55:37,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402639444] [2020-10-12 20:55:37,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:37,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:37,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6721216] [2020-10-12 20:55:37,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:37,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:37,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:37,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:37,933 INFO L87 Difference]: Start difference. First operand 2342 states and 3626 transitions. Second operand 5 states. [2020-10-12 20:55:38,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:38,783 INFO L93 Difference]: Finished difference Result 4881 states and 7514 transitions. [2020-10-12 20:55:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:38,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:55:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:38,788 INFO L225 Difference]: With dead ends: 4881 [2020-10-12 20:55:38,788 INFO L226 Difference]: Without dead ends: 2580 [2020-10-12 20:55:38,792 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 20:55:38,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-12 20:55:38,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2342. [2020-10-12 20:55:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3618 transitions. [2020-10-12 20:55:38,864 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3618 transitions. Word has length 111 [2020-10-12 20:55:38,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:38,864 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3618 transitions. [2020-10-12 20:55:38,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:38,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3618 transitions. [2020-10-12 20:55:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:55:38,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:38,867 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 20:55:38,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:55:38,868 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:38,868 INFO L82 PathProgramCache]: Analyzing trace with hash 539390263, now seen corresponding path program 1 times [2020-10-12 20:55:38,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:38,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981676959] [2020-10-12 20:55:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:39,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:55:39,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-12 20:55:39,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:55:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:39,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:39,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:39,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:39,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:39,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:39,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:39,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:39,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:39,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:39,665 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 20:55:39,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981676959] [2020-10-12 20:55:39,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:39,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:39,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344192733] [2020-10-12 20:55:39,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:39,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:39,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:39,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:39,667 INFO L87 Difference]: Start difference. First operand 2342 states and 3618 transitions. Second operand 5 states. [2020-10-12 20:55:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:40,497 INFO L93 Difference]: Finished difference Result 4881 states and 7498 transitions. [2020-10-12 20:55:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:40,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:55:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:40,500 INFO L225 Difference]: With dead ends: 4881 [2020-10-12 20:55:40,501 INFO L226 Difference]: Without dead ends: 2580 [2020-10-12 20:55:40,503 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 20:55:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-12 20:55:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2342. [2020-10-12 20:55:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3610 transitions. [2020-10-12 20:55:40,567 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3610 transitions. Word has length 112 [2020-10-12 20:55:40,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:40,568 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3610 transitions. [2020-10-12 20:55:40,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3610 transitions. [2020-10-12 20:55:40,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:55:40,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:40,571 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 20:55:40,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:55:40,571 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:40,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:40,572 INFO L82 PathProgramCache]: Analyzing trace with hash 833147573, now seen corresponding path program 1 times [2020-10-12 20:55:40,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:40,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434184701] [2020-10-12 20:55:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:41,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:41,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:55:41,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1252 [2020-10-12 20:55:41,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:55:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:41,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:41,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:41,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:41,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:41,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:41,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:41,925 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 20:55:41,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434184701] [2020-10-12 20:55:41,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:41,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:41,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480327728] [2020-10-12 20:55:41,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:41,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:41,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:41,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:41,927 INFO L87 Difference]: Start difference. First operand 2342 states and 3610 transitions. Second operand 5 states. [2020-10-12 20:55:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:42,768 INFO L93 Difference]: Finished difference Result 4849 states and 7442 transitions. [2020-10-12 20:55:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:42,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:55:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:42,771 INFO L225 Difference]: With dead ends: 4849 [2020-10-12 20:55:42,771 INFO L226 Difference]: Without dead ends: 2548 [2020-10-12 20:55:42,774 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 20:55:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-12 20:55:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2342. [2020-10-12 20:55:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3602 transitions. [2020-10-12 20:55:42,839 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3602 transitions. Word has length 112 [2020-10-12 20:55:42,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:42,840 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3602 transitions. [2020-10-12 20:55:42,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:42,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3602 transitions. [2020-10-12 20:55:42,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:55:42,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:42,843 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] [2020-10-12 20:55:42,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:55:42,843 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:42,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash -146029206, now seen corresponding path program 1 times [2020-10-12 20:55:42,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:42,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001536268] [2020-10-12 20:55:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:43,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:55:43,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-12 20:55:43,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:55:43,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:43,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:43,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:43,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:43,814 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 20:55:43,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001536268] [2020-10-12 20:55:43,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:43,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:43,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674628633] [2020-10-12 20:55:43,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:43,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:43,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:43,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:43,815 INFO L87 Difference]: Start difference. First operand 2342 states and 3602 transitions. Second operand 5 states. [2020-10-12 20:55:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:44,677 INFO L93 Difference]: Finished difference Result 3860 states and 5894 transitions. [2020-10-12 20:55:44,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:44,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:55:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:44,681 INFO L225 Difference]: With dead ends: 3860 [2020-10-12 20:55:44,681 INFO L226 Difference]: Without dead ends: 2548 [2020-10-12 20:55:44,683 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 20:55:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-12 20:55:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2342. [2020-10-12 20:55:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3594 transitions. [2020-10-12 20:55:44,726 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3594 transitions. Word has length 113 [2020-10-12 20:55:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:44,726 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3594 transitions. [2020-10-12 20:55:44,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3594 transitions. [2020-10-12 20:55:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:55:44,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:44,729 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 20:55:44,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:55:44,730 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:44,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:44,730 INFO L82 PathProgramCache]: Analyzing trace with hash -422650115, now seen corresponding path program 1 times [2020-10-12 20:55:44,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:44,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58693878] [2020-10-12 20:55:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:44,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:45,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:55:45,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-12 20:55:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:55:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:45,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:45,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:45,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:45,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:45,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:45,491 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 20:55:45,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58693878] [2020-10-12 20:55:45,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:45,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:45,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081782961] [2020-10-12 20:55:45,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:45,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:45,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:45,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:45,493 INFO L87 Difference]: Start difference. First operand 2342 states and 3594 transitions. Second operand 5 states. [2020-10-12 20:55:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:46,339 INFO L93 Difference]: Finished difference Result 4833 states and 7394 transitions. [2020-10-12 20:55:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:46,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:55:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:46,344 INFO L225 Difference]: With dead ends: 4833 [2020-10-12 20:55:46,344 INFO L226 Difference]: Without dead ends: 2532 [2020-10-12 20:55:46,348 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 20:55:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2020-10-12 20:55:46,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2342. [2020-10-12 20:55:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3586 transitions. [2020-10-12 20:55:46,415 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3586 transitions. Word has length 113 [2020-10-12 20:55:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:46,416 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3586 transitions. [2020-10-12 20:55:46,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3586 transitions. [2020-10-12 20:55:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:55:46,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:46,419 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 20:55:46,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:55:46,420 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:46,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1359667634, now seen corresponding path program 1 times [2020-10-12 20:55:46,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:46,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549007775] [2020-10-12 20:55:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:47,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:55:47,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:47,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-12 20:55:47,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:55:47,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:47,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:47,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:47,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:47,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:47,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:47,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:47,188 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 20:55:47,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549007775] [2020-10-12 20:55:47,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:47,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:47,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214048790] [2020-10-12 20:55:47,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:47,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:47,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:47,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:47,190 INFO L87 Difference]: Start difference. First operand 2342 states and 3586 transitions. Second operand 5 states. [2020-10-12 20:55:48,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:48,057 INFO L93 Difference]: Finished difference Result 4833 states and 7378 transitions. [2020-10-12 20:55:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:48,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:55:48,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:48,061 INFO L225 Difference]: With dead ends: 4833 [2020-10-12 20:55:48,061 INFO L226 Difference]: Without dead ends: 2532 [2020-10-12 20:55:48,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2020-10-12 20:55:48,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2342. [2020-10-12 20:55:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3578 transitions. [2020-10-12 20:55:48,117 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3578 transitions. Word has length 114 [2020-10-12 20:55:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:48,117 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3578 transitions. [2020-10-12 20:55:48,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3578 transitions. [2020-10-12 20:55:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:55:48,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:48,120 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] [2020-10-12 20:55:48,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:55:48,120 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:48,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2008010017, now seen corresponding path program 1 times [2020-10-12 20:55:48,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:48,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351293306] [2020-10-12 20:55:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:49,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:55:49,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-12 20:55:49,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:55:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:49,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:49,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:49,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:49,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:49,125 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 20:55:49,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351293306] [2020-10-12 20:55:49,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:49,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:49,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030328782] [2020-10-12 20:55:49,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:49,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:49,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:49,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:49,127 INFO L87 Difference]: Start difference. First operand 2342 states and 3578 transitions. Second operand 5 states. [2020-10-12 20:55:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:49,974 INFO L93 Difference]: Finished difference Result 3836 states and 5834 transitions. [2020-10-12 20:55:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:49,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:55:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:49,978 INFO L225 Difference]: With dead ends: 3836 [2020-10-12 20:55:49,978 INFO L226 Difference]: Without dead ends: 2524 [2020-10-12 20:55:49,980 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 20:55:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2020-10-12 20:55:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2342. [2020-10-12 20:55:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-12 20:55:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3570 transitions. [2020-10-12 20:55:50,034 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3570 transitions. Word has length 114 [2020-10-12 20:55:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:50,034 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3570 transitions. [2020-10-12 20:55:50,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3570 transitions. [2020-10-12 20:55:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:55:50,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:50,037 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 20:55:50,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:55:50,037 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:50,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1126795608, now seen corresponding path program 1 times [2020-10-12 20:55:50,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:50,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871500800] [2020-10-12 20:55:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:55:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-12 20:55:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:55:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:50,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:50,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:50,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:50,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:50,866 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 20:55:50,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871500800] [2020-10-12 20:55:50,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:50,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:50,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632168001] [2020-10-12 20:55:50,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:50,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:50,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:50,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:50,867 INFO L87 Difference]: Start difference. First operand 2342 states and 3570 transitions. Second operand 5 states. [2020-10-12 20:55:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:51,710 INFO L93 Difference]: Finished difference Result 4604 states and 6987 transitions. [2020-10-12 20:55:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:51,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 20:55:51,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:51,713 INFO L225 Difference]: With dead ends: 4604 [2020-10-12 20:55:51,713 INFO L226 Difference]: Without dead ends: 2303 [2020-10-12 20:55:51,716 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 20:55:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2020-10-12 20:55:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2085. [2020-10-12 20:55:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-12 20:55:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3175 transitions. [2020-10-12 20:55:51,759 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3175 transitions. Word has length 115 [2020-10-12 20:55:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:51,760 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 3175 transitions. [2020-10-12 20:55:51,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3175 transitions. [2020-10-12 20:55:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:55:51,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:51,762 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 20:55:51,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:55:51,762 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:51,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:51,762 INFO L82 PathProgramCache]: Analyzing trace with hash 934202430, now seen corresponding path program 1 times [2020-10-12 20:55:51,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:51,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901893879] [2020-10-12 20:55:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:55,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:55:55,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4095 [2020-10-12 20:55:55,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:55:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:55:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:55,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:55,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:55,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:55,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:55,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:55,950 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 20:55:55,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901893879] [2020-10-12 20:55:55,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:55,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:55,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544178751] [2020-10-12 20:55:55,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:55,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:55,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:55,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:55,951 INFO L87 Difference]: Start difference. First operand 2085 states and 3175 transitions. Second operand 5 states. [2020-10-12 20:55:56,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:56,785 INFO L93 Difference]: Finished difference Result 3241 states and 4882 transitions. [2020-10-12 20:55:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:56,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:55:56,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:56,788 INFO L225 Difference]: With dead ends: 3241 [2020-10-12 20:55:56,788 INFO L226 Difference]: Without dead ends: 1994 [2020-10-12 20:55:56,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:56,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-10-12 20:55:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1842. [2020-10-12 20:55:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1842 states. [2020-10-12 20:55:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2786 transitions. [2020-10-12 20:55:56,822 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2786 transitions. Word has length 116 [2020-10-12 20:55:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:56,823 INFO L479 AbstractCegarLoop]: Abstraction has 1842 states and 2786 transitions. [2020-10-12 20:55:56,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:56,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2786 transitions. [2020-10-12 20:55:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:55:56,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:56,825 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 20:55:56,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 20:55:56,825 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:56,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:56,825 INFO L82 PathProgramCache]: Analyzing trace with hash -888241065, now seen corresponding path program 1 times [2020-10-12 20:55:56,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:56,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361811983] [2020-10-12 20:55:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:57,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:57,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:55:57,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:57,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-12 20:55:57,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:55:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:55:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:57,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:57,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:57,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:57,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:57,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:57,199 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 20:55:57,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361811983] [2020-10-12 20:55:57,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:57,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:57,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446060690] [2020-10-12 20:55:57,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:57,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:57,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:57,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:57,200 INFO L87 Difference]: Start difference. First operand 1842 states and 2786 transitions. Second operand 5 states. [2020-10-12 20:55:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:58,226 INFO L93 Difference]: Finished difference Result 2752 states and 4157 transitions. [2020-10-12 20:55:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:58,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:55:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:58,229 INFO L225 Difference]: With dead ends: 2752 [2020-10-12 20:55:58,230 INFO L226 Difference]: Without dead ends: 2061 [2020-10-12 20:55:58,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:58,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-10-12 20:55:58,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1873. [2020-10-12 20:55:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-10-12 20:55:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2837 transitions. [2020-10-12 20:55:58,264 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2837 transitions. Word has length 121 [2020-10-12 20:55:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:58,265 INFO L479 AbstractCegarLoop]: Abstraction has 1873 states and 2837 transitions. [2020-10-12 20:55:58,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2837 transitions. [2020-10-12 20:55:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:55:58,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:58,267 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] [2020-10-12 20:55:58,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 20:55:58,268 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2076554200, now seen corresponding path program 1 times [2020-10-12 20:55:58,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:58,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457437176] [2020-10-12 20:55:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:59,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:55:59,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-10-12 20:55:59,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:55:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:55:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:59,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:59,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:59,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:59,311 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 20:55:59,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457437176] [2020-10-12 20:55:59,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:59,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:59,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858050869] [2020-10-12 20:55:59,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:59,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:59,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:59,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:59,312 INFO L87 Difference]: Start difference. First operand 1873 states and 2837 transitions. Second operand 5 states. [2020-10-12 20:56:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:00,204 INFO L93 Difference]: Finished difference Result 3436 states and 5210 transitions. [2020-10-12 20:56:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:00,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:56:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:00,207 INFO L225 Difference]: With dead ends: 3436 [2020-10-12 20:56:00,207 INFO L226 Difference]: Without dead ends: 2093 [2020-10-12 20:56:00,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2020-10-12 20:56:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1913. [2020-10-12 20:56:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-10-12 20:56:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2913 transitions. [2020-10-12 20:56:00,242 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2913 transitions. Word has length 121 [2020-10-12 20:56:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:00,242 INFO L479 AbstractCegarLoop]: Abstraction has 1913 states and 2913 transitions. [2020-10-12 20:56:00,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2913 transitions. [2020-10-12 20:56:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:56:00,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:00,245 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 20:56:00,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 20:56:00,245 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:00,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:00,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1184485646, now seen corresponding path program 1 times [2020-10-12 20:56:00,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:00,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570361183] [2020-10-12 20:56:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:56:00,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-12 20:56:00,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:56:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:00,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:00,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:00,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:00,605 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 20:56:00,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570361183] [2020-10-12 20:56:00,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:00,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:00,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890714709] [2020-10-12 20:56:00,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:00,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:00,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:00,607 INFO L87 Difference]: Start difference. First operand 1913 states and 2913 transitions. Second operand 5 states. [2020-10-12 20:56:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:01,581 INFO L93 Difference]: Finished difference Result 2827 states and 4294 transitions. [2020-10-12 20:56:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:01,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:56:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:01,584 INFO L225 Difference]: With dead ends: 2827 [2020-10-12 20:56:01,584 INFO L226 Difference]: Without dead ends: 2085 [2020-10-12 20:56:01,586 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 20:56:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-10-12 20:56:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1939. [2020-10-12 20:56:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2020-10-12 20:56:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2957 transitions. [2020-10-12 20:56:01,620 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2957 transitions. Word has length 122 [2020-10-12 20:56:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:01,620 INFO L479 AbstractCegarLoop]: Abstraction has 1939 states and 2957 transitions. [2020-10-12 20:56:01,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2957 transitions. [2020-10-12 20:56:01,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:56:01,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:01,622 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 20:56:01,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 20:56:01,622 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:01,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:01,623 INFO L82 PathProgramCache]: Analyzing trace with hash 44321912, now seen corresponding path program 1 times [2020-10-12 20:56:01,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:01,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10497631] [2020-10-12 20:56:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:02,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:56:02,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-12 20:56:02,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:56:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:56:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:02,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:02,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:02,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:02,643 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 20:56:02,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10497631] [2020-10-12 20:56:02,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:02,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:02,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118214417] [2020-10-12 20:56:02,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:02,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:02,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:02,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:02,645 INFO L87 Difference]: Start difference. First operand 1939 states and 2957 transitions. Second operand 5 states. [2020-10-12 20:56:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:03,564 INFO L93 Difference]: Finished difference Result 3510 states and 5345 transitions. [2020-10-12 20:56:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:03,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:56:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:03,572 INFO L225 Difference]: With dead ends: 3510 [2020-10-12 20:56:03,572 INFO L226 Difference]: Without dead ends: 2101 [2020-10-12 20:56:03,575 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 20:56:03,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2020-10-12 20:56:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1935. [2020-10-12 20:56:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-12 20:56:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2953 transitions. [2020-10-12 20:56:03,611 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2953 transitions. Word has length 122 [2020-10-12 20:56:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:03,612 INFO L479 AbstractCegarLoop]: Abstraction has 1935 states and 2953 transitions. [2020-10-12 20:56:03,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2953 transitions. [2020-10-12 20:56:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:56:03,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:03,614 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 20:56:03,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 20:56:03,614 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:03,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1775467415, now seen corresponding path program 1 times [2020-10-12 20:56:03,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:03,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332386152] [2020-10-12 20:56:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:06,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:06,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:56:06,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2524 [2020-10-12 20:56:06,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:56:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:56:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:56:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:06,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:06,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:06,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:06,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:06,254 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 20:56:06,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332386152] [2020-10-12 20:56:06,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:06,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:06,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399842371] [2020-10-12 20:56:06,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:06,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:06,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:06,256 INFO L87 Difference]: Start difference. First operand 1935 states and 2953 transitions. Second operand 6 states. [2020-10-12 20:56:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:07,563 INFO L93 Difference]: Finished difference Result 3900 states and 5942 transitions. [2020-10-12 20:56:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:56:07,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-12 20:56:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:07,566 INFO L225 Difference]: With dead ends: 3900 [2020-10-12 20:56:07,566 INFO L226 Difference]: Without dead ends: 2495 [2020-10-12 20:56:07,568 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 20:56:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2020-10-12 20:56:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1997. [2020-10-12 20:56:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2020-10-12 20:56:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3055 transitions. [2020-10-12 20:56:07,610 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3055 transitions. Word has length 123 [2020-10-12 20:56:07,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:07,610 INFO L479 AbstractCegarLoop]: Abstraction has 1997 states and 3055 transitions. [2020-10-12 20:56:07,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3055 transitions. [2020-10-12 20:56:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:56:07,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:07,613 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 20:56:07,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 20:56:07,613 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:07,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1703080857, now seen corresponding path program 1 times [2020-10-12 20:56:07,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:07,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792289315] [2020-10-12 20:56:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:11,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:56:11,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4034 [2020-10-12 20:56:11,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:56:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:56:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:56:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:11,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:11,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:11,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:11,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:11,761 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 20:56:11,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792289315] [2020-10-12 20:56:11,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:11,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:11,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176859023] [2020-10-12 20:56:11,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:11,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:11,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:11,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:11,763 INFO L87 Difference]: Start difference. First operand 1997 states and 3055 transitions. Second operand 6 states. [2020-10-12 20:56:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:12,956 INFO L93 Difference]: Finished difference Result 4013 states and 6142 transitions. [2020-10-12 20:56:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:56:12,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-12 20:56:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:12,960 INFO L225 Difference]: With dead ends: 4013 [2020-10-12 20:56:12,960 INFO L226 Difference]: Without dead ends: 2546 [2020-10-12 20:56:12,962 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 20:56:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-10-12 20:56:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1966. [2020-10-12 20:56:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-12 20:56:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3008 transitions. [2020-10-12 20:56:13,009 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3008 transitions. Word has length 123 [2020-10-12 20:56:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:13,010 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 3008 transitions. [2020-10-12 20:56:13,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3008 transitions. [2020-10-12 20:56:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:56:13,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:13,012 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 20:56:13,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-12 20:56:13,012 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:13,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:13,013 INFO L82 PathProgramCache]: Analyzing trace with hash -213901390, now seen corresponding path program 1 times [2020-10-12 20:56:13,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:13,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705751252] [2020-10-12 20:56:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:15,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:56:15,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2404 [2020-10-12 20:56:15,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:56:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:56:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:56:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:15,540 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 20:56:15,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705751252] [2020-10-12 20:56:15,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:15,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:15,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056866438] [2020-10-12 20:56:15,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:15,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:15,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:15,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:15,541 INFO L87 Difference]: Start difference. First operand 1966 states and 3008 transitions. Second operand 6 states. [2020-10-12 20:56:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:16,689 INFO L93 Difference]: Finished difference Result 3868 states and 5894 transitions. [2020-10-12 20:56:16,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:56:16,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-12 20:56:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:16,692 INFO L225 Difference]: With dead ends: 3868 [2020-10-12 20:56:16,692 INFO L226 Difference]: Without dead ends: 2432 [2020-10-12 20:56:16,694 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 20:56:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2020-10-12 20:56:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1961. [2020-10-12 20:56:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-12 20:56:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 3001 transitions. [2020-10-12 20:56:16,732 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 3001 transitions. Word has length 124 [2020-10-12 20:56:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:16,732 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 3001 transitions. [2020-10-12 20:56:16,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 3001 transitions. [2020-10-12 20:56:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:56:16,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:16,735 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 20:56:16,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-12 20:56:16,735 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:16,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1837082608, now seen corresponding path program 1 times [2020-10-12 20:56:16,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:16,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025539604] [2020-10-12 20:56:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:21,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:21,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:56:21,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4733 [2020-10-12 20:56:21,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:56:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 20:56:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 20:56:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:21,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:21,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:21,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:21,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025539604] [2020-10-12 20:56:21,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:21,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:56:21,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326997242] [2020-10-12 20:56:21,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:56:21,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:21,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:56:21,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:21,617 INFO L87 Difference]: Start difference. First operand 1961 states and 3001 transitions. Second operand 6 states. [2020-10-12 20:56:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:23,109 INFO L93 Difference]: Finished difference Result 5399 states and 8297 transitions. [2020-10-12 20:56:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:56:23,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-12 20:56:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:23,113 INFO L225 Difference]: With dead ends: 5399 [2020-10-12 20:56:23,114 INFO L226 Difference]: Without dead ends: 3479 [2020-10-12 20:56:23,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:56:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2020-10-12 20:56:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3397. [2020-10-12 20:56:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3397 states. [2020-10-12 20:56:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5235 transitions. [2020-10-12 20:56:23,183 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5235 transitions. Word has length 124 [2020-10-12 20:56:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:23,183 INFO L479 AbstractCegarLoop]: Abstraction has 3397 states and 5235 transitions. [2020-10-12 20:56:23,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:56:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5235 transitions. [2020-10-12 20:56:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:56:23,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:23,186 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] [2020-10-12 20:56:23,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-12 20:56:23,187 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:23,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:23,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1771988853, now seen corresponding path program 1 times [2020-10-12 20:56:23,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:23,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806441728] [2020-10-12 20:56:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:23,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:56:23,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-12 20:56:23,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:56:23,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:23,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:23,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:23,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:23,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:23,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:23,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:23,510 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 20:56:23,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806441728] [2020-10-12 20:56:23,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:23,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:23,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786076087] [2020-10-12 20:56:23,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:23,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:23,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:23,511 INFO L87 Difference]: Start difference. First operand 3397 states and 5235 transitions. Second operand 5 states. [2020-10-12 20:56:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:24,535 INFO L93 Difference]: Finished difference Result 4974 states and 7661 transitions. [2020-10-12 20:56:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:24,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 20:56:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:24,540 INFO L225 Difference]: With dead ends: 4974 [2020-10-12 20:56:24,540 INFO L226 Difference]: Without dead ends: 3600 [2020-10-12 20:56:24,542 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 20:56:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2020-10-12 20:56:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3474. [2020-10-12 20:56:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3474 states. [2020-10-12 20:56:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 5368 transitions. [2020-10-12 20:56:24,608 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 5368 transitions. Word has length 127 [2020-10-12 20:56:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:24,608 INFO L479 AbstractCegarLoop]: Abstraction has 3474 states and 5368 transitions. [2020-10-12 20:56:24,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 5368 transitions. [2020-10-12 20:56:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:56:24,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:24,612 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] [2020-10-12 20:56:24,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-12 20:56:24,612 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:24,612 INFO L82 PathProgramCache]: Analyzing trace with hash -909927733, now seen corresponding path program 1 times [2020-10-12 20:56:24,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:24,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090049298] [2020-10-12 20:56:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:24,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:24,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:24,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 20:56:24,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-12 20:56:24,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:56:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:24,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:24,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:24,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:24,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:24,939 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 20:56:24,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090049298] [2020-10-12 20:56:24,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:24,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:24,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518086759] [2020-10-12 20:56:24,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:24,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:24,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:24,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:24,941 INFO L87 Difference]: Start difference. First operand 3474 states and 5368 transitions. Second operand 5 states. [2020-10-12 20:56:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:25,964 INFO L93 Difference]: Finished difference Result 5041 states and 7779 transitions. [2020-10-12 20:56:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:25,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 20:56:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:25,970 INFO L225 Difference]: With dead ends: 5041 [2020-10-12 20:56:25,970 INFO L226 Difference]: Without dead ends: 3590 [2020-10-12 20:56:25,973 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 20:56:25,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2020-10-12 20:56:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3428. [2020-10-12 20:56:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3428 states. [2020-10-12 20:56:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5286 transitions. [2020-10-12 20:56:26,041 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5286 transitions. Word has length 128 [2020-10-12 20:56:26,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:26,041 INFO L479 AbstractCegarLoop]: Abstraction has 3428 states and 5286 transitions. [2020-10-12 20:56:26,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5286 transitions. [2020-10-12 20:56:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:56:26,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:26,045 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] [2020-10-12 20:56:26,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-12 20:56:26,045 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:26,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1109192373, now seen corresponding path program 1 times [2020-10-12 20:56:26,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:26,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450936380] [2020-10-12 20:56:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:31,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 20:56:31,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:56:31,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 20:56:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:56:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:31,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:31,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:31,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:31,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:31,410 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 20:56:31,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450936380] [2020-10-12 20:56:31,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:31,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:56:31,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075157622] [2020-10-12 20:56:31,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:56:31,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:31,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:56:31,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:56:31,411 INFO L87 Difference]: Start difference. First operand 3428 states and 5286 transitions. Second operand 10 states. [2020-10-12 20:56:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:33,844 INFO L93 Difference]: Finished difference Result 6787 states and 10441 transitions. [2020-10-12 20:56:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:56:33,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-10-12 20:56:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:33,850 INFO L225 Difference]: With dead ends: 6787 [2020-10-12 20:56:33,850 INFO L226 Difference]: Without dead ends: 4121 [2020-10-12 20:56:33,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:56:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2020-10-12 20:56:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3655. [2020-10-12 20:56:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3655 states. [2020-10-12 20:56:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5651 transitions. [2020-10-12 20:56:33,936 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5651 transitions. Word has length 129 [2020-10-12 20:56:33,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:33,936 INFO L479 AbstractCegarLoop]: Abstraction has 3655 states and 5651 transitions. [2020-10-12 20:56:33,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:56:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5651 transitions. [2020-10-12 20:56:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:56:33,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:33,940 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 20:56:33,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-12 20:56:33,941 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:33,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:33,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1754318975, now seen corresponding path program 1 times [2020-10-12 20:56:33,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:33,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768599607] [2020-10-12 20:56:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:38,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:56:38,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:56:38,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:56:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:56:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:39,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:39,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:39,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:39,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:39,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:39,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:39,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:39,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:39,350 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 20:56:39,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768599607] [2020-10-12 20:56:39,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:39,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:56:39,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18024400] [2020-10-12 20:56:39,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:56:39,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:39,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:56:39,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:56:39,352 INFO L87 Difference]: Start difference. First operand 3655 states and 5651 transitions. Second operand 9 states. [2020-10-12 20:56:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:41,325 INFO L93 Difference]: Finished difference Result 6616 states and 10152 transitions. [2020-10-12 20:56:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:56:41,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-10-12 20:56:41,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:41,330 INFO L225 Difference]: With dead ends: 6616 [2020-10-12 20:56:41,331 INFO L226 Difference]: Without dead ends: 5191 [2020-10-12 20:56:41,334 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 20:56:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2020-10-12 20:56:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 4274. [2020-10-12 20:56:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4274 states. [2020-10-12 20:56:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6620 transitions. [2020-10-12 20:56:41,435 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6620 transitions. Word has length 130 [2020-10-12 20:56:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:41,435 INFO L479 AbstractCegarLoop]: Abstraction has 4274 states and 6620 transitions. [2020-10-12 20:56:41,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:56:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6620 transitions. [2020-10-12 20:56:41,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:56:41,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:41,439 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 20:56:41,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-12 20:56:41,439 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:41,439 INFO L82 PathProgramCache]: Analyzing trace with hash 122781022, now seen corresponding path program 1 times [2020-10-12 20:56:41,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:41,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992202272] [2020-10-12 20:56:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:41,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:41,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:56:41,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:41,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 20:56:41,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:56:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:56:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 20:56:41,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:41,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:41,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:41,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:41,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:41,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:41,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:41,665 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 20:56:41,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992202272] [2020-10-12 20:56:41,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:41,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:56:41,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244365235] [2020-10-12 20:56:41,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:56:41,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:41,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:56:41,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:41,667 INFO L87 Difference]: Start difference. First operand 4274 states and 6620 transitions. Second operand 4 states. [2020-10-12 20:56:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:42,584 INFO L93 Difference]: Finished difference Result 12738 states and 19767 transitions. [2020-10-12 20:56:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:56:42,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-12 20:56:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:42,594 INFO L225 Difference]: With dead ends: 12738 [2020-10-12 20:56:42,594 INFO L226 Difference]: Without dead ends: 8505 [2020-10-12 20:56:42,601 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 20:56:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8505 states. [2020-10-12 20:56:42,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8505 to 8505. [2020-10-12 20:56:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8505 states. [2020-10-12 20:56:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8505 states to 8505 states and 13141 transitions. [2020-10-12 20:56:42,890 INFO L78 Accepts]: Start accepts. Automaton has 8505 states and 13141 transitions. Word has length 130 [2020-10-12 20:56:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:42,890 INFO L479 AbstractCegarLoop]: Abstraction has 8505 states and 13141 transitions. [2020-10-12 20:56:42,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:56:42,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8505 states and 13141 transitions. [2020-10-12 20:56:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:56:42,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:42,894 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 20:56:42,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-12 20:56:42,894 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:42,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:42,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1017591688, now seen corresponding path program 1 times [2020-10-12 20:56:42,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:42,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431141873] [2020-10-12 20:56:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:42,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:43,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:56:43,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 20:56:43,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:56:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:56:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 20:56:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:43,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:43,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:43,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:43,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:43,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:43,101 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 20:56:43,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431141873] [2020-10-12 20:56:43,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:43,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:56:43,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330246600] [2020-10-12 20:56:43,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:56:43,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:56:43,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:43,102 INFO L87 Difference]: Start difference. First operand 8505 states and 13141 transitions. Second operand 4 states. [2020-10-12 20:56:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:43,838 INFO L93 Difference]: Finished difference Result 15586 states and 24108 transitions. [2020-10-12 20:56:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:56:43,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-12 20:56:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:43,852 INFO L225 Difference]: With dead ends: 15586 [2020-10-12 20:56:43,852 INFO L226 Difference]: Without dead ends: 12738 [2020-10-12 20:56:43,858 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 20:56:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12738 states. [2020-10-12 20:56:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12738 to 12736. [2020-10-12 20:56:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12736 states. [2020-10-12 20:56:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12736 states to 12736 states and 19700 transitions. [2020-10-12 20:56:44,169 INFO L78 Accepts]: Start accepts. Automaton has 12736 states and 19700 transitions. Word has length 132 [2020-10-12 20:56:44,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:44,169 INFO L479 AbstractCegarLoop]: Abstraction has 12736 states and 19700 transitions. [2020-10-12 20:56:44,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:56:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 12736 states and 19700 transitions. [2020-10-12 20:56:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 20:56:44,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:44,174 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 20:56:44,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-12 20:56:44,174 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:44,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1892823577, now seen corresponding path program 1 times [2020-10-12 20:56:44,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:44,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402141792] [2020-10-12 20:56:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:44,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:44,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 20:56:44,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 20:56:44,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:56:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-12 20:56:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:56:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:44,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:44,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:44,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:44,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:44,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:44,420 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 20:56:44,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402141792] [2020-10-12 20:56:44,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:44,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:56:44,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770593218] [2020-10-12 20:56:44,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:56:44,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:44,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:56:44,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:56:44,422 INFO L87 Difference]: Start difference. First operand 12736 states and 19700 transitions. Second operand 4 states. [2020-10-12 20:56:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:45,215 INFO L93 Difference]: Finished difference Result 14163 states and 21908 transitions. [2020-10-12 20:56:45,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:56:45,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-12 20:56:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:45,230 INFO L225 Difference]: With dead ends: 14163 [2020-10-12 20:56:45,230 INFO L226 Difference]: Without dead ends: 14161 [2020-10-12 20:56:45,234 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 20:56:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14161 states. [2020-10-12 20:56:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14161 to 14159. [2020-10-12 20:56:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14159 states. [2020-10-12 20:56:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14159 states to 14159 states and 21894 transitions. [2020-10-12 20:56:45,570 INFO L78 Accepts]: Start accepts. Automaton has 14159 states and 21894 transitions. Word has length 133 [2020-10-12 20:56:45,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:45,571 INFO L479 AbstractCegarLoop]: Abstraction has 14159 states and 21894 transitions. [2020-10-12 20:56:45,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:56:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 14159 states and 21894 transitions. [2020-10-12 20:56:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 20:56:45,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:45,577 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] [2020-10-12 20:56:45,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-12 20:56:45,577 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:45,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1689661926, now seen corresponding path program 1 times [2020-10-12 20:56:45,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:45,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310701661] [2020-10-12 20:56:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:46,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:46,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 20:56:46,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-10-12 20:56:46,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:56:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:56:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:46,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:46,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:46,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:46,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:46,379 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 20:56:46,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310701661] [2020-10-12 20:56:46,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:46,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:46,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493975292] [2020-10-12 20:56:46,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:46,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:46,380 INFO L87 Difference]: Start difference. First operand 14159 states and 21894 transitions. Second operand 5 states. [2020-10-12 20:56:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:47,731 INFO L93 Difference]: Finished difference Result 30617 states and 47358 transitions. [2020-10-12 20:56:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:47,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-12 20:56:47,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:47,748 INFO L225 Difference]: With dead ends: 30617 [2020-10-12 20:56:47,748 INFO L226 Difference]: Without dead ends: 16499 [2020-10-12 20:56:47,765 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 20:56:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16499 states. [2020-10-12 20:56:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16499 to 15259. [2020-10-12 20:56:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15259 states. [2020-10-12 20:56:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15259 states to 15259 states and 23754 transitions. [2020-10-12 20:56:48,126 INFO L78 Accepts]: Start accepts. Automaton has 15259 states and 23754 transitions. Word has length 138 [2020-10-12 20:56:48,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:48,127 INFO L479 AbstractCegarLoop]: Abstraction has 15259 states and 23754 transitions. [2020-10-12 20:56:48,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:48,127 INFO L276 IsEmpty]: Start isEmpty. Operand 15259 states and 23754 transitions. [2020-10-12 20:56:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-12 20:56:48,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:48,133 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] [2020-10-12 20:56:48,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-12 20:56:48,133 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:48,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:48,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1000321233, now seen corresponding path program 1 times [2020-10-12 20:56:48,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:48,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958565272] [2020-10-12 20:56:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:48,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:52,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:52,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 20:56:52,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4273 [2020-10-12 20:56:52,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:56:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:56:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:56:52,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:52,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:52,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:52,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:52,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:52,512 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 20:56:52,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958565272] [2020-10-12 20:56:52,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:52,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:52,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527130332] [2020-10-12 20:56:52,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:52,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:52,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:52,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:52,514 INFO L87 Difference]: Start difference. First operand 15259 states and 23754 transitions. Second operand 5 states. [2020-10-12 20:56:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:53,871 INFO L93 Difference]: Finished difference Result 21865 states and 33891 transitions. [2020-10-12 20:56:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:53,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-12 20:56:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:53,887 INFO L225 Difference]: With dead ends: 21865 [2020-10-12 20:56:53,888 INFO L226 Difference]: Without dead ends: 15651 [2020-10-12 20:56:53,895 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 20:56:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15651 states. [2020-10-12 20:56:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15651 to 15259. [2020-10-12 20:56:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15259 states. [2020-10-12 20:56:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15259 states to 15259 states and 23746 transitions. [2020-10-12 20:56:54,229 INFO L78 Accepts]: Start accepts. Automaton has 15259 states and 23746 transitions. Word has length 141 [2020-10-12 20:56:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:54,230 INFO L479 AbstractCegarLoop]: Abstraction has 15259 states and 23746 transitions. [2020-10-12 20:56:54,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 15259 states and 23746 transitions. [2020-10-12 20:56:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:56:54,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:54,236 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] [2020-10-12 20:56:54,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-12 20:56:54,237 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:54,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2023019570, now seen corresponding path program 1 times [2020-10-12 20:56:54,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:54,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665102587] [2020-10-12 20:56:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:54,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 20:56:59,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:56:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:56:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:56:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:59,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:59,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:59,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 23 proven. 64 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:59,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665102587] [2020-10-12 20:56:59,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:59,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:56:59,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720033720] [2020-10-12 20:56:59,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:56:59,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:59,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:56:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:56:59,501 INFO L87 Difference]: Start difference. First operand 15259 states and 23746 transitions. Second operand 9 states.