/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.15.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:57:02,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:57:02,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:57:02,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:57:02,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:57:02,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:57:02,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:57:02,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:57:02,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:57:02,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:57:02,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:57:02,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:57:02,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:57:02,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:57:02,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:57:02,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:57:02,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:57:02,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:57:02,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:57:02,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:57:02,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:57:02,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:57:02,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:57:02,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:57:02,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:57:02,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:57:02,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:57:02,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:57:02,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:57:02,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:57:02,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:57:02,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:57:02,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:57:02,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:57:02,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:57:02,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:57:02,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:57:02,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:57:02,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:57:02,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:57:02,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:57:02,659 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 20:57:02,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:57:02,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:57:02,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:57:02,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:57:02,684 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:57:02,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:57:02,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:57:02,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:57:02,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:57:02,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:57:02,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:57:02,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:57:02,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:57:02,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:57:02,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:57:02,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:57:02,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:57:02,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:57:02,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:57:02,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:57:02,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:57:02,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:57:02,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:57:02,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:57:02,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:57:02,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:57:02,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:57:02,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:57:02,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:57:02,689 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 20:57:03,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:57:03,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:57:03,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:57:03,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:57:03,053 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:57:03,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.15.i.cil-1.c [2020-10-12 20:57:03,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da0fd8f90/2408c1731f15407f87bab3e43bfdc1d5/FLAG05f63a820 [2020-10-12 20:57:03,759 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:57:03,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.15.i.cil-1.c [2020-10-12 20:57:03,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da0fd8f90/2408c1731f15407f87bab3e43bfdc1d5/FLAG05f63a820 [2020-10-12 20:57:03,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da0fd8f90/2408c1731f15407f87bab3e43bfdc1d5 [2020-10-12 20:57:03,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:57:03,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:57:03,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:57:03,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:57:03,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:57:03,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:57:03" (1/1) ... [2020-10-12 20:57:03,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:03, skipping insertion in model container [2020-10-12 20:57:03,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:57:03" (1/1) ... [2020-10-12 20:57:03,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:57:04,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:57:04,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:57:04,757 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:57:04,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:57:05,005 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:57:05,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05 WrapperNode [2020-10-12 20:57:05,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:57:05,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:57:05,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:57:05,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:57:05,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (1/1) ... [2020-10-12 20:57:05,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (1/1) ... [2020-10-12 20:57:05,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (1/1) ... [2020-10-12 20:57:05,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (1/1) ... [2020-10-12 20:57:05,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (1/1) ... [2020-10-12 20:57:05,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (1/1) ... [2020-10-12 20:57:05,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (1/1) ... [2020-10-12 20:57:05,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:57:05,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:57:05,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:57:05,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:57:05,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (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 20:57:05,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:57:05,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:57:05,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:57:05,258 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:57:05,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:57:05,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:57:05,258 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:57:05,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:57:05,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:57:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:57:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:57:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:57:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:57:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:57:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:57:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:57:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:57:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:57:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:57:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:57:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:57:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:57:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:57:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:57:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:57:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:57:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:57:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:57:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:57:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:57:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:57:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:57:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:57:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:57:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:57:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:57:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:57:05,711 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:57:06,443 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:57:06,444 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:57:06,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:57:06,466 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:57:06,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:57:06 BoogieIcfgContainer [2020-10-12 20:57:06,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:57:06,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:57:06,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:57:06,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:57:06,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:57:03" (1/3) ... [2020-10-12 20:57:06,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:57:06, skipping insertion in model container [2020-10-12 20:57:06,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:57:05" (2/3) ... [2020-10-12 20:57:06,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:57:06, skipping insertion in model container [2020-10-12 20:57:06,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:57:06" (3/3) ... [2020-10-12 20:57:06,480 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-1.c [2020-10-12 20:57:06,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:57:06,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:57:06,514 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:57:06,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:57:06,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:57:06,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:57:06,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:57:06,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:57:06,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:57:06,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:57:06,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:57:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-10-12 20:57:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 20:57:06,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:06,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:06,574 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:06,579 INFO L82 PathProgramCache]: Analyzing trace with hash 176189692, now seen corresponding path program 1 times [2020-10-12 20:57:06,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:06,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409195415] [2020-10-12 20:57:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:08,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:08,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 20:57:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-12 20:57:08,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:08,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:08,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:57:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:57:08,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:08,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:08,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:08,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:57:08,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:08,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:57:08,250 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 20:57:08,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409195415] [2020-10-12 20:57:08,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:08,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:08,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010168946] [2020-10-12 20:57:08,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:08,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:08,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:08,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:08,286 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 5 states. [2020-10-12 20:57:09,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:09,628 INFO L93 Difference]: Finished difference Result 415 states and 702 transitions. [2020-10-12 20:57:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:09,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-12 20:57:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:09,650 INFO L225 Difference]: With dead ends: 415 [2020-10-12 20:57:09,651 INFO L226 Difference]: Without dead ends: 243 [2020-10-12 20:57:09,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:09,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-12 20:57:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 175. [2020-10-12 20:57:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-12 20:57:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 278 transitions. [2020-10-12 20:57:09,752 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 278 transitions. Word has length 49 [2020-10-12 20:57:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:09,754 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 278 transitions. [2020-10-12 20:57:09,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 278 transitions. [2020-10-12 20:57:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 20:57:09,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:09,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:09,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:57:09,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash -784049966, now seen corresponding path program 1 times [2020-10-12 20:57:09,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:09,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328107804] [2020-10-12 20:57:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:09,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:10,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:10,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 20:57:10,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-12 20:57:10,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:57:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:57:10,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:10,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:10,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:10,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:10,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:57:10,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:10,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:10,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:10,666 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 20:57:10,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328107804] [2020-10-12 20:57:10,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:10,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:10,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292026106] [2020-10-12 20:57:10,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:10,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:10,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:10,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:10,688 INFO L87 Difference]: Start difference. First operand 175 states and 278 transitions. Second operand 5 states. [2020-10-12 20:57:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:11,665 INFO L93 Difference]: Finished difference Result 365 states and 563 transitions. [2020-10-12 20:57:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:11,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-12 20:57:11,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:11,668 INFO L225 Difference]: With dead ends: 365 [2020-10-12 20:57:11,669 INFO L226 Difference]: Without dead ends: 235 [2020-10-12 20:57:11,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:11,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-12 20:57:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 176. [2020-10-12 20:57:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-12 20:57:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 279 transitions. [2020-10-12 20:57:11,683 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 279 transitions. Word has length 50 [2020-10-12 20:57:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:11,683 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 279 transitions. [2020-10-12 20:57:11,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 279 transitions. [2020-10-12 20:57:11,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 20:57:11,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:11,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:11,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:57:11,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:11,687 INFO L82 PathProgramCache]: Analyzing trace with hash 730335114, now seen corresponding path program 1 times [2020-10-12 20:57:11,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:11,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257293257] [2020-10-12 20:57:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:11,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:12,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:57:12,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-12 20:57:12,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:57:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:12,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:12,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:12,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:57:12,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:12,784 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 20:57:12,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257293257] [2020-10-12 20:57:12,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:12,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:12,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673798897] [2020-10-12 20:57:12,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:12,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:12,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:12,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:12,787 INFO L87 Difference]: Start difference. First operand 176 states and 279 transitions. Second operand 5 states. [2020-10-12 20:57:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:13,681 INFO L93 Difference]: Finished difference Result 365 states and 562 transitions. [2020-10-12 20:57:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:13,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 20:57:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:13,683 INFO L225 Difference]: With dead ends: 365 [2020-10-12 20:57:13,683 INFO L226 Difference]: Without dead ends: 235 [2020-10-12 20:57:13,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-12 20:57:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 176. [2020-10-12 20:57:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-12 20:57:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 278 transitions. [2020-10-12 20:57:13,695 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 278 transitions. Word has length 62 [2020-10-12 20:57:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:13,696 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 278 transitions. [2020-10-12 20:57:13,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 278 transitions. [2020-10-12 20:57:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:57:13,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:13,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:13,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:57:13,699 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash 2013544070, now seen corresponding path program 1 times [2020-10-12 20:57:13,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:13,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219475866] [2020-10-12 20:57:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:14,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:18,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:57:18,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 20:57:18,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:57:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:57:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:57:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:18,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:18,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:57:18,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:18,894 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 20:57:18,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219475866] [2020-10-12 20:57:18,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:18,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:18,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835192909] [2020-10-12 20:57:18,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:18,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:18,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:18,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:18,897 INFO L87 Difference]: Start difference. First operand 176 states and 278 transitions. Second operand 5 states. [2020-10-12 20:57:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:19,788 INFO L93 Difference]: Finished difference Result 365 states and 561 transitions. [2020-10-12 20:57:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:19,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:57:19,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:19,791 INFO L225 Difference]: With dead ends: 365 [2020-10-12 20:57:19,791 INFO L226 Difference]: Without dead ends: 235 [2020-10-12 20:57:19,793 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 20:57:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-12 20:57:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 186. [2020-10-12 20:57:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-12 20:57:19,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 290 transitions. [2020-10-12 20:57:19,807 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 290 transitions. Word has length 63 [2020-10-12 20:57:19,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:19,808 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 290 transitions. [2020-10-12 20:57:19,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:19,808 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 290 transitions. [2020-10-12 20:57:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:57:19,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:19,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:19,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:57:19,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash -172999281, now seen corresponding path program 1 times [2020-10-12 20:57:19,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:19,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172293002] [2020-10-12 20:57:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:20,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:57:20,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-12 20:57:20,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:57:20,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:20,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:20,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:20,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:57:20,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:20,786 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 20:57:20,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172293002] [2020-10-12 20:57:20,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:20,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:20,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253312851] [2020-10-12 20:57:20,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:20,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:20,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:20,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:20,790 INFO L87 Difference]: Start difference. First operand 186 states and 290 transitions. Second operand 5 states. [2020-10-12 20:57:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:21,633 INFO L93 Difference]: Finished difference Result 363 states and 558 transitions. [2020-10-12 20:57:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:21,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:57:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:21,635 INFO L225 Difference]: With dead ends: 363 [2020-10-12 20:57:21,635 INFO L226 Difference]: Without dead ends: 233 [2020-10-12 20:57:21,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-12 20:57:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 186. [2020-10-12 20:57:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-12 20:57:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 289 transitions. [2020-10-12 20:57:21,646 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 289 transitions. Word has length 63 [2020-10-12 20:57:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:21,647 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 289 transitions. [2020-10-12 20:57:21,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 289 transitions. [2020-10-12 20:57:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:57:21,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:21,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:21,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:57:21,649 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:21,649 INFO L82 PathProgramCache]: Analyzing trace with hash -105439280, now seen corresponding path program 1 times [2020-10-12 20:57:21,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:21,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794039612] [2020-10-12 20:57:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:22,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:22,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:57:22,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-12 20:57:22,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:57:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:22,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:22,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:22,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:22,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:57:22,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:22,151 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 20:57:22,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794039612] [2020-10-12 20:57:22,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:22,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:22,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48219636] [2020-10-12 20:57:22,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:22,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:22,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:22,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:22,154 INFO L87 Difference]: Start difference. First operand 186 states and 289 transitions. Second operand 5 states. [2020-10-12 20:57:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:23,025 INFO L93 Difference]: Finished difference Result 362 states and 556 transitions. [2020-10-12 20:57:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:23,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:57:23,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:23,027 INFO L225 Difference]: With dead ends: 362 [2020-10-12 20:57:23,027 INFO L226 Difference]: Without dead ends: 232 [2020-10-12 20:57:23,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-12 20:57:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 186. [2020-10-12 20:57:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-12 20:57:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 288 transitions. [2020-10-12 20:57:23,039 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 288 transitions. Word has length 63 [2020-10-12 20:57:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:23,040 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 288 transitions. [2020-10-12 20:57:23,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 288 transitions. [2020-10-12 20:57:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:57:23,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:23,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:23,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:57:23,043 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:23,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2041848089, now seen corresponding path program 1 times [2020-10-12 20:57:23,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:23,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266669907] [2020-10-12 20:57:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:23,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:25,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:28,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:28,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:28,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:57:28,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:57:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:57:28,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:57:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:57:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:57:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:28,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:28,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:28,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:28,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:57:28,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:28,273 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 20:57:28,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266669907] [2020-10-12 20:57:28,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:57:28,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:57:28,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265335541] [2020-10-12 20:57:28,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:57:28,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:57:28,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:57:28,284 INFO L87 Difference]: Start difference. First operand 186 states and 288 transitions. Second operand 8 states. [2020-10-12 20:57:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:29,760 INFO L93 Difference]: Finished difference Result 466 states and 720 transitions. [2020-10-12 20:57:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:57:29,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-12 20:57:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:29,764 INFO L225 Difference]: With dead ends: 466 [2020-10-12 20:57:29,764 INFO L226 Difference]: Without dead ends: 315 [2020-10-12 20:57:29,765 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 20:57:29,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-12 20:57:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 266. [2020-10-12 20:57:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-12 20:57:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 409 transitions. [2020-10-12 20:57:29,777 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 409 transitions. Word has length 64 [2020-10-12 20:57:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:29,778 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 409 transitions. [2020-10-12 20:57:29,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:57:29,778 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 409 transitions. [2020-10-12 20:57:29,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 20:57:29,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:29,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:29,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:57:29,780 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:29,780 INFO L82 PathProgramCache]: Analyzing trace with hash 139148321, now seen corresponding path program 1 times [2020-10-12 20:57:29,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:29,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603836947] [2020-10-12 20:57:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:30,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:30,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:57:30,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-12 20:57:30,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:57:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:57:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:30,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:30,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:30,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:30,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:30,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:30,254 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 20:57:30,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603836947] [2020-10-12 20:57:30,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:30,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:30,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330789232] [2020-10-12 20:57:30,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:30,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:30,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:30,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:30,256 INFO L87 Difference]: Start difference. First operand 266 states and 409 transitions. Second operand 5 states. [2020-10-12 20:57:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:30,992 INFO L93 Difference]: Finished difference Result 581 states and 903 transitions. [2020-10-12 20:57:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:30,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-12 20:57:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:30,996 INFO L225 Difference]: With dead ends: 581 [2020-10-12 20:57:30,996 INFO L226 Difference]: Without dead ends: 350 [2020-10-12 20:57:30,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:30,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-12 20:57:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 310. [2020-10-12 20:57:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-12 20:57:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 485 transitions. [2020-10-12 20:57:31,009 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 485 transitions. Word has length 66 [2020-10-12 20:57:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:31,010 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 485 transitions. [2020-10-12 20:57:31,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 485 transitions. [2020-10-12 20:57:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:57:31,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:31,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:31,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:57:31,012 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:31,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1475489421, now seen corresponding path program 1 times [2020-10-12 20:57:31,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:31,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050511342] [2020-10-12 20:57:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:36,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:57:36,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:57:36,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:57:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:57:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:57:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:57:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:36,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:36,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:36,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:36,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:36,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:57:36,182 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 20:57:36,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050511342] [2020-10-12 20:57:36,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:36,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:57:36,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451886423] [2020-10-12 20:57:36,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:57:36,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:36,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:57:36,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:36,184 INFO L87 Difference]: Start difference. First operand 310 states and 485 transitions. Second operand 6 states. [2020-10-12 20:57:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:36,810 INFO L93 Difference]: Finished difference Result 509 states and 793 transitions. [2020-10-12 20:57:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:57:36,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-12 20:57:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:36,814 INFO L225 Difference]: With dead ends: 509 [2020-10-12 20:57:36,815 INFO L226 Difference]: Without dead ends: 327 [2020-10-12 20:57:36,815 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 20:57:36,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-12 20:57:36,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2020-10-12 20:57:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 20:57:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 493 transitions. [2020-10-12 20:57:36,826 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 493 transitions. Word has length 77 [2020-10-12 20:57:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:36,826 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 493 transitions. [2020-10-12 20:57:36,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:57:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 493 transitions. [2020-10-12 20:57:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:57:36,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:36,828 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:36,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:57:36,828 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:36,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1370327007, now seen corresponding path program 1 times [2020-10-12 20:57:36,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:36,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905640610] [2020-10-12 20:57:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:39,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:41,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:41,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:57:41,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:57:41,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:57:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:41,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:41,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:41,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:41,926 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 20:57:41,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905640610] [2020-10-12 20:57:41,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:41,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:41,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8700628] [2020-10-12 20:57:41,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:41,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:41,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:41,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:41,929 INFO L87 Difference]: Start difference. First operand 317 states and 493 transitions. Second operand 5 states. [2020-10-12 20:57:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:42,743 INFO L93 Difference]: Finished difference Result 511 states and 793 transitions. [2020-10-12 20:57:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:42,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:57:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:42,746 INFO L225 Difference]: With dead ends: 511 [2020-10-12 20:57:42,747 INFO L226 Difference]: Without dead ends: 321 [2020-10-12 20:57:42,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:42,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-12 20:57:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2020-10-12 20:57:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 20:57:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 492 transitions. [2020-10-12 20:57:42,759 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 492 transitions. Word has length 77 [2020-10-12 20:57:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:42,760 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 492 transitions. [2020-10-12 20:57:42,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 492 transitions. [2020-10-12 20:57:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:57:42,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:42,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:42,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:57:42,762 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:42,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1918157252, now seen corresponding path program 1 times [2020-10-12 20:57:42,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:42,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331114144] [2020-10-12 20:57:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:42,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:46,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:57:46,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4057 [2020-10-12 20:57:46,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:57:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:46,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:46,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:46,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:46,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:46,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:46,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:46,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:46,913 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 20:57:46,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331114144] [2020-10-12 20:57:46,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:46,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:46,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025480422] [2020-10-12 20:57:46,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:46,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:46,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:46,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:46,916 INFO L87 Difference]: Start difference. First operand 317 states and 492 transitions. Second operand 5 states. [2020-10-12 20:57:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:47,545 INFO L93 Difference]: Finished difference Result 511 states and 792 transitions. [2020-10-12 20:57:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:47,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:57:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:47,549 INFO L225 Difference]: With dead ends: 511 [2020-10-12 20:57:47,549 INFO L226 Difference]: Without dead ends: 321 [2020-10-12 20:57:47,550 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 20:57:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-12 20:57:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2020-10-12 20:57:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 20:57:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 491 transitions. [2020-10-12 20:57:47,561 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 491 transitions. Word has length 78 [2020-10-12 20:57:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:47,561 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 491 transitions. [2020-10-12 20:57:47,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:47,561 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 491 transitions. [2020-10-12 20:57:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:57:47,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:47,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:47,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:57:47,563 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:47,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1035427334, now seen corresponding path program 1 times [2020-10-12 20:57:47,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:47,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130794549] [2020-10-12 20:57:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:51,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:57:51,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3871 [2020-10-12 20:57:51,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:57:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:57:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:51,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:51,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:51,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:51,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:51,522 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 20:57:51,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130794549] [2020-10-12 20:57:51,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:51,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:51,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438701179] [2020-10-12 20:57:51,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:51,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:51,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:51,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:51,524 INFO L87 Difference]: Start difference. First operand 317 states and 491 transitions. Second operand 5 states. [2020-10-12 20:57:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:52,145 INFO L93 Difference]: Finished difference Result 511 states and 791 transitions. [2020-10-12 20:57:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:52,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:57:52,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:52,148 INFO L225 Difference]: With dead ends: 511 [2020-10-12 20:57:52,148 INFO L226 Difference]: Without dead ends: 321 [2020-10-12 20:57:52,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-12 20:57:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2020-10-12 20:57:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 20:57:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 490 transitions. [2020-10-12 20:57:52,162 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 490 transitions. Word has length 79 [2020-10-12 20:57:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:52,162 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 490 transitions. [2020-10-12 20:57:52,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 490 transitions. [2020-10-12 20:57:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:57:52,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:52,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:52,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:57:52,164 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:52,165 INFO L82 PathProgramCache]: Analyzing trace with hash -370327419, now seen corresponding path program 1 times [2020-10-12 20:57:52,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:52,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95044163] [2020-10-12 20:57:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:52,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:57:52,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-12 20:57:52,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:57:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:57:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:52,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:52,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:52,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:52,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:52,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:52,703 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 20:57:52,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95044163] [2020-10-12 20:57:52,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:52,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:52,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780310837] [2020-10-12 20:57:52,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:52,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:52,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:52,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:52,705 INFO L87 Difference]: Start difference. First operand 317 states and 490 transitions. Second operand 5 states. [2020-10-12 20:57:53,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:53,428 INFO L93 Difference]: Finished difference Result 526 states and 803 transitions. [2020-10-12 20:57:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:53,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:57:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:53,430 INFO L225 Difference]: With dead ends: 526 [2020-10-12 20:57:53,430 INFO L226 Difference]: Without dead ends: 365 [2020-10-12 20:57:53,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-12 20:57:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 317. [2020-10-12 20:57:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 20:57:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 488 transitions. [2020-10-12 20:57:53,447 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 488 transitions. Word has length 79 [2020-10-12 20:57:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:53,447 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 488 transitions. [2020-10-12 20:57:53,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:53,448 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 488 transitions. [2020-10-12 20:57:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:57:53,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:53,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:53,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:57:53,452 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:53,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:53,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2042223381, now seen corresponding path program 1 times [2020-10-12 20:57:53,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:53,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422540236] [2020-10-12 20:57:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:53,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:55,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:56,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:56,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:57:56,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3355 [2020-10-12 20:57:56,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:57:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:57:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:57:56,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:56,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:56,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:56,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:56,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:56,926 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 20:57:56,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422540236] [2020-10-12 20:57:56,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:56,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:56,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476245523] [2020-10-12 20:57:56,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:56,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:56,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:56,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:56,929 INFO L87 Difference]: Start difference. First operand 317 states and 488 transitions. Second operand 5 states. [2020-10-12 20:57:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:57,619 INFO L93 Difference]: Finished difference Result 526 states and 800 transitions. [2020-10-12 20:57:57,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:57,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:57:57,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:57,622 INFO L225 Difference]: With dead ends: 526 [2020-10-12 20:57:57,624 INFO L226 Difference]: Without dead ends: 355 [2020-10-12 20:57:57,625 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 20:57:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-12 20:57:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 326. [2020-10-12 20:57:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-12 20:57:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 497 transitions. [2020-10-12 20:57:57,642 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 497 transitions. Word has length 80 [2020-10-12 20:57:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:57,643 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 497 transitions. [2020-10-12 20:57:57,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 497 transitions. [2020-10-12 20:57:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:57:57,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:57,652 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:57,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:57:57,653 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:57,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:57,653 INFO L82 PathProgramCache]: Analyzing trace with hash 66200564, now seen corresponding path program 1 times [2020-10-12 20:57:57,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:57,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125307843] [2020-10-12 20:57:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:58,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:58,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:57:58,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:58,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-12 20:57:58,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:57:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:57:58,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:58,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:58,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:58,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:58,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:58,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:57:58,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125307843] [2020-10-12 20:57:58,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:58,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:58,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179591596] [2020-10-12 20:57:58,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:58,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:58,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:58,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:58,252 INFO L87 Difference]: Start difference. First operand 326 states and 497 transitions. Second operand 5 states. [2020-10-12 20:57:59,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:59,073 INFO L93 Difference]: Finished difference Result 612 states and 935 transitions. [2020-10-12 20:57:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:59,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:57:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:59,078 INFO L225 Difference]: With dead ends: 612 [2020-10-12 20:57:59,078 INFO L226 Difference]: Without dead ends: 442 [2020-10-12 20:57:59,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-12 20:57:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 365. [2020-10-12 20:57:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-12 20:57:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 569 transitions. [2020-10-12 20:57:59,096 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 569 transitions. Word has length 80 [2020-10-12 20:57:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:59,097 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 569 transitions. [2020-10-12 20:57:59,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 569 transitions. [2020-10-12 20:57:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:57:59,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:59,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:59,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:57:59,100 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:59,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:59,100 INFO L82 PathProgramCache]: Analyzing trace with hash 133760565, now seen corresponding path program 1 times [2020-10-12 20:57:59,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:59,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572168724] [2020-10-12 20:57:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:59,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:57:59,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-12 20:57:59,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:57:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:57:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:59,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:59,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:59,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:59,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:59,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:59,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:59,446 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 20:57:59,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572168724] [2020-10-12 20:57:59,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:59,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:59,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221939699] [2020-10-12 20:57:59,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:59,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:59,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:59,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:59,448 INFO L87 Difference]: Start difference. First operand 365 states and 569 transitions. Second operand 5 states. [2020-10-12 20:58:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:00,438 INFO L93 Difference]: Finished difference Result 902 states and 1416 transitions. [2020-10-12 20:58:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:00,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:58:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:00,443 INFO L225 Difference]: With dead ends: 902 [2020-10-12 20:58:00,443 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:58:00,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:58:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 406. [2020-10-12 20:58:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-12 20:58:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 643 transitions. [2020-10-12 20:58:00,475 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 643 transitions. Word has length 80 [2020-10-12 20:58:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:00,475 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 643 transitions. [2020-10-12 20:58:00,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:00,475 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 643 transitions. [2020-10-12 20:58:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:58:00,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:00,477 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:00,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:58:00,478 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash 101254362, now seen corresponding path program 1 times [2020-10-12 20:58:00,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:00,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748388221] [2020-10-12 20:58:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:00,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:58:00,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:00,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-12 20:58:00,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:58:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:00,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:00,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:00,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:58:00,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748388221] [2020-10-12 20:58:00,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:00,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:00,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207645855] [2020-10-12 20:58:00,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:00,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:00,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:00,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:00,965 INFO L87 Difference]: Start difference. First operand 406 states and 643 transitions. Second operand 5 states. [2020-10-12 20:58:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:01,777 INFO L93 Difference]: Finished difference Result 724 states and 1142 transitions. [2020-10-12 20:58:01,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:01,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:58:01,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:01,782 INFO L225 Difference]: With dead ends: 724 [2020-10-12 20:58:01,782 INFO L226 Difference]: Without dead ends: 514 [2020-10-12 20:58:01,782 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 20:58:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-12 20:58:01,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 446. [2020-10-12 20:58:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-12 20:58:01,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 716 transitions. [2020-10-12 20:58:01,803 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 716 transitions. Word has length 81 [2020-10-12 20:58:01,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:01,804 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 716 transitions. [2020-10-12 20:58:01,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:01,804 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 716 transitions. [2020-10-12 20:58:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:58:01,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:01,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:01,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:58:01,807 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:01,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2099352903, now seen corresponding path program 1 times [2020-10-12 20:58:01,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:01,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348932010] [2020-10-12 20:58:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:02,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:02,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:58:02,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:02,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 20:58:02,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:58:02,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:02,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:02,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:02,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:02,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:02,093 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 20:58:02,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348932010] [2020-10-12 20:58:02,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:02,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:02,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139698609] [2020-10-12 20:58:02,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:02,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:02,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:02,095 INFO L87 Difference]: Start difference. First operand 446 states and 716 transitions. Second operand 5 states. [2020-10-12 20:58:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:03,020 INFO L93 Difference]: Finished difference Result 970 states and 1541 transitions. [2020-10-12 20:58:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:03,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:58:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:03,028 INFO L225 Difference]: With dead ends: 970 [2020-10-12 20:58:03,028 INFO L226 Difference]: Without dead ends: 549 [2020-10-12 20:58:03,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:03,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-10-12 20:58:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 406. [2020-10-12 20:58:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-12 20:58:03,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 643 transitions. [2020-10-12 20:58:03,044 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 643 transitions. Word has length 81 [2020-10-12 20:58:03,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:03,045 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 643 transitions. [2020-10-12 20:58:03,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 643 transitions. [2020-10-12 20:58:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:58:03,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:03,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:03,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:58:03,047 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:03,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1853569775, now seen corresponding path program 1 times [2020-10-12 20:58:03,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:03,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164501610] [2020-10-12 20:58:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:03,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:08,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:58:08,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:58:08,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:58:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:58:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:58:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:08,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:08,170 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 20:58:08,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164501610] [2020-10-12 20:58:08,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:08,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:08,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528061398] [2020-10-12 20:58:08,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:08,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:08,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:08,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:08,172 INFO L87 Difference]: Start difference. First operand 406 states and 643 transitions. Second operand 5 states. [2020-10-12 20:58:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:09,033 INFO L93 Difference]: Finished difference Result 824 states and 1301 transitions. [2020-10-12 20:58:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:09,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:58:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:09,038 INFO L225 Difference]: With dead ends: 824 [2020-10-12 20:58:09,038 INFO L226 Difference]: Without dead ends: 603 [2020-10-12 20:58:09,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-10-12 20:58:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 436. [2020-10-12 20:58:09,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-12 20:58:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 688 transitions. [2020-10-12 20:58:09,055 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 688 transitions. Word has length 81 [2020-10-12 20:58:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:09,055 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 688 transitions. [2020-10-12 20:58:09,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 688 transitions. [2020-10-12 20:58:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:58:09,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:09,057 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:09,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:58:09,057 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:09,058 INFO L82 PathProgramCache]: Analyzing trace with hash -257923140, now seen corresponding path program 1 times [2020-10-12 20:58:09,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:09,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414096309] [2020-10-12 20:58:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:09,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:14,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:14,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:58:14,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:58:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:58:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:58:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:14,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:14,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:14,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:14,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:14,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:14,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:58:14,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414096309] [2020-10-12 20:58:14,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:14,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:58:14,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241080969] [2020-10-12 20:58:14,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:58:14,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:14,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:58:14,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:58:14,372 INFO L87 Difference]: Start difference. First operand 436 states and 688 transitions. Second operand 9 states. [2020-10-12 20:58:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:16,091 INFO L93 Difference]: Finished difference Result 916 states and 1438 transitions. [2020-10-12 20:58:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:58:16,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-12 20:58:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:16,097 INFO L225 Difference]: With dead ends: 916 [2020-10-12 20:58:16,097 INFO L226 Difference]: Without dead ends: 690 [2020-10-12 20:58:16,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:58:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-12 20:58:16,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 445. [2020-10-12 20:58:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-12 20:58:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 699 transitions. [2020-10-12 20:58:16,122 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 699 transitions. Word has length 82 [2020-10-12 20:58:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:16,123 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 699 transitions. [2020-10-12 20:58:16,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:58:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 699 transitions. [2020-10-12 20:58:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:58:16,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:16,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:16,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:58:16,125 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2012560036, now seen corresponding path program 1 times [2020-10-12 20:58:16,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:16,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511464386] [2020-10-12 20:58:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:16,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:58:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 20:58:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:16,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:16,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:16,409 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 20:58:16,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511464386] [2020-10-12 20:58:16,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:16,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:16,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154300859] [2020-10-12 20:58:16,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:16,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:16,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:16,411 INFO L87 Difference]: Start difference. First operand 445 states and 699 transitions. Second operand 5 states. [2020-10-12 20:58:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:17,418 INFO L93 Difference]: Finished difference Result 1053 states and 1661 transitions. [2020-10-12 20:58:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:17,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:58:17,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:17,423 INFO L225 Difference]: With dead ends: 1053 [2020-10-12 20:58:17,423 INFO L226 Difference]: Without dead ends: 632 [2020-10-12 20:58:17,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-10-12 20:58:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 525. [2020-10-12 20:58:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-10-12 20:58:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 843 transitions. [2020-10-12 20:58:17,442 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 843 transitions. Word has length 88 [2020-10-12 20:58:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:17,442 INFO L479 AbstractCegarLoop]: Abstraction has 525 states and 843 transitions. [2020-10-12 20:58:17,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:17,442 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 843 transitions. [2020-10-12 20:58:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:58:17,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:17,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:17,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:58:17,444 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:17,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1858760538, now seen corresponding path program 1 times [2020-10-12 20:58:17,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:17,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635356720] [2020-10-12 20:58:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:17,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:58:17,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:17,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 20:58:17,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:58:17,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:17,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:17,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:17,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:17,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:17,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:17,794 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 20:58:17,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635356720] [2020-10-12 20:58:17,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:17,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:17,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307225709] [2020-10-12 20:58:17,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:17,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:17,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:17,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:17,796 INFO L87 Difference]: Start difference. First operand 525 states and 843 transitions. Second operand 5 states. [2020-10-12 20:58:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:18,785 INFO L93 Difference]: Finished difference Result 1211 states and 1947 transitions. [2020-10-12 20:58:18,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:18,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:58:18,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:18,791 INFO L225 Difference]: With dead ends: 1211 [2020-10-12 20:58:18,792 INFO L226 Difference]: Without dead ends: 710 [2020-10-12 20:58:18,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-12 20:58:18,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 523. [2020-10-12 20:58:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-12 20:58:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 841 transitions. [2020-10-12 20:58:18,811 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 841 transitions. Word has length 88 [2020-10-12 20:58:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:18,811 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 841 transitions. [2020-10-12 20:58:18,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 841 transitions. [2020-10-12 20:58:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:58:18,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:18,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:18,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:58:18,814 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:18,814 INFO L82 PathProgramCache]: Analyzing trace with hash 308855850, now seen corresponding path program 1 times [2020-10-12 20:58:18,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:18,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988532095] [2020-10-12 20:58:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:18,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:18,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:58:18,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 20:58:18,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:58:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:19,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:19,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:19,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:19,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:19,035 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 20:58:19,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988532095] [2020-10-12 20:58:19,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:19,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:19,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973343627] [2020-10-12 20:58:19,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:19,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:19,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:19,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:19,037 INFO L87 Difference]: Start difference. First operand 523 states and 841 transitions. Second operand 5 states. [2020-10-12 20:58:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:20,026 INFO L93 Difference]: Finished difference Result 1195 states and 1922 transitions. [2020-10-12 20:58:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:20,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:58:20,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:20,029 INFO L225 Difference]: With dead ends: 1195 [2020-10-12 20:58:20,029 INFO L226 Difference]: Without dead ends: 696 [2020-10-12 20:58:20,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-12 20:58:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 523. [2020-10-12 20:58:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-12 20:58:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 841 transitions. [2020-10-12 20:58:20,048 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 841 transitions. Word has length 89 [2020-10-12 20:58:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:20,048 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 841 transitions. [2020-10-12 20:58:20,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 841 transitions. [2020-10-12 20:58:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:58:20,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:20,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:20,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:58:20,051 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash 557002344, now seen corresponding path program 1 times [2020-10-12 20:58:20,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:20,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597486673] [2020-10-12 20:58:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:20,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:20,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:58:20,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:20,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 20:58:20,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:20,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:20,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:20,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:58:20,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:20,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:20,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:20,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:20,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:20,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:20,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:20,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:20,370 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 20:58:20,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597486673] [2020-10-12 20:58:20,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:20,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:20,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480314961] [2020-10-12 20:58:20,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:20,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:20,371 INFO L87 Difference]: Start difference. First operand 523 states and 841 transitions. Second operand 5 states. [2020-10-12 20:58:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:21,117 INFO L93 Difference]: Finished difference Result 1038 states and 1654 transitions. [2020-10-12 20:58:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:21,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:58:21,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:21,120 INFO L225 Difference]: With dead ends: 1038 [2020-10-12 20:58:21,120 INFO L226 Difference]: Without dead ends: 539 [2020-10-12 20:58:21,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-10-12 20:58:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 493. [2020-10-12 20:58:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-12 20:58:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 781 transitions. [2020-10-12 20:58:21,137 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 781 transitions. Word has length 89 [2020-10-12 20:58:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:21,137 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 781 transitions. [2020-10-12 20:58:21,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 781 transitions. [2020-10-12 20:58:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:58:21,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:21,139 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:21,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:58:21,139 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:21,140 INFO L82 PathProgramCache]: Analyzing trace with hash -533015283, now seen corresponding path program 1 times [2020-10-12 20:58:21,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:21,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776105642] [2020-10-12 20:58:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:26,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:26,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:58:26,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:58:26,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:26,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:58:26,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:26,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 20:58:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:26,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:26,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:26,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:58:26,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776105642] [2020-10-12 20:58:26,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:26,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:58:26,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434597696] [2020-10-12 20:58:26,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:58:26,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:26,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:58:26,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:58:26,363 INFO L87 Difference]: Start difference. First operand 493 states and 781 transitions. Second operand 9 states. [2020-10-12 20:58:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:27,884 INFO L93 Difference]: Finished difference Result 1268 states and 2006 transitions. [2020-10-12 20:58:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:58:27,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-12 20:58:27,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:27,889 INFO L225 Difference]: With dead ends: 1268 [2020-10-12 20:58:27,889 INFO L226 Difference]: Without dead ends: 1018 [2020-10-12 20:58:27,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:58:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-12 20:58:27,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 914. [2020-10-12 20:58:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-10-12 20:58:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1474 transitions. [2020-10-12 20:58:27,919 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1474 transitions. Word has length 95 [2020-10-12 20:58:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:27,920 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1474 transitions. [2020-10-12 20:58:27,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:58:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1474 transitions. [2020-10-12 20:58:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:58:27,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:27,924 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:27,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:58:27,926 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:27,927 INFO L82 PathProgramCache]: Analyzing trace with hash -960027808, now seen corresponding path program 1 times [2020-10-12 20:58:27,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:27,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236875769] [2020-10-12 20:58:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:32,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:58:32,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:58:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:58:32,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:58:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 20:58:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:33,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:33,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:33,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 20:58:33,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236875769] [2020-10-12 20:58:33,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:33,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:58:33,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447133043] [2020-10-12 20:58:33,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:58:33,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:33,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:58:33,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:58:33,140 INFO L87 Difference]: Start difference. First operand 914 states and 1474 transitions. Second operand 9 states. [2020-10-12 20:58:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:34,549 INFO L93 Difference]: Finished difference Result 1459 states and 2331 transitions. [2020-10-12 20:58:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:58:34,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-12 20:58:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:34,553 INFO L225 Difference]: With dead ends: 1459 [2020-10-12 20:58:34,553 INFO L226 Difference]: Without dead ends: 1209 [2020-10-12 20:58:34,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:58:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-12 20:58:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 533. [2020-10-12 20:58:34,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-10-12 20:58:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 842 transitions. [2020-10-12 20:58:34,576 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 842 transitions. Word has length 95 [2020-10-12 20:58:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:34,577 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 842 transitions. [2020-10-12 20:58:34,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:58:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 842 transitions. [2020-10-12 20:58:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:58:34,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:34,579 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:34,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:58:34,579 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:34,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:34,579 INFO L82 PathProgramCache]: Analyzing trace with hash 398695883, now seen corresponding path program 1 times [2020-10-12 20:58:34,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:34,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789352599] [2020-10-12 20:58:34,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:36,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:58:36,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-10-12 20:58:36,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:58:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:58:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:36,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:36,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:36,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:36,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:58:36,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789352599] [2020-10-12 20:58:36,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:36,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:36,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109866276] [2020-10-12 20:58:36,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:36,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:36,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:36,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:36,078 INFO L87 Difference]: Start difference. First operand 533 states and 842 transitions. Second operand 5 states. [2020-10-12 20:58:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:37,100 INFO L93 Difference]: Finished difference Result 1251 states and 1982 transitions. [2020-10-12 20:58:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:37,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:58:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:37,105 INFO L225 Difference]: With dead ends: 1251 [2020-10-12 20:58:37,105 INFO L226 Difference]: Without dead ends: 742 [2020-10-12 20:58:37,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-12 20:58:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 611. [2020-10-12 20:58:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-12 20:58:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 984 transitions. [2020-10-12 20:58:37,126 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 984 transitions. Word has length 102 [2020-10-12 20:58:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:37,126 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 984 transitions. [2020-10-12 20:58:37,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 984 transitions. [2020-10-12 20:58:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:58:37,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:37,128 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:37,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:58:37,128 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:37,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1818674659, now seen corresponding path program 1 times [2020-10-12 20:58:37,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:37,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007584824] [2020-10-12 20:58:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:37,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:37,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:38,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:58:38,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-10-12 20:58:38,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:58:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:58:38,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:38,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:38,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:38,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:38,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:58:38,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007584824] [2020-10-12 20:58:38,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:38,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:38,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239506730] [2020-10-12 20:58:38,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:38,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:38,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:38,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:38,655 INFO L87 Difference]: Start difference. First operand 611 states and 984 transitions. Second operand 5 states. [2020-10-12 20:58:39,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:39,452 INFO L93 Difference]: Finished difference Result 1224 states and 1956 transitions. [2020-10-12 20:58:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:39,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:58:39,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:39,456 INFO L225 Difference]: With dead ends: 1224 [2020-10-12 20:58:39,456 INFO L226 Difference]: Without dead ends: 637 [2020-10-12 20:58:39,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-10-12 20:58:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 585. [2020-10-12 20:58:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-12 20:58:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 932 transitions. [2020-10-12 20:58:39,480 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 932 transitions. Word has length 103 [2020-10-12 20:58:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:39,480 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 932 transitions. [2020-10-12 20:58:39,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 932 transitions. [2020-10-12 20:58:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:58:39,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:39,482 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:39,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:58:39,483 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:39,484 INFO L82 PathProgramCache]: Analyzing trace with hash -325340683, now seen corresponding path program 1 times [2020-10-12 20:58:39,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:39,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494243365] [2020-10-12 20:58:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:58:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-12 20:58:40,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:58:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:58:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:40,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:40,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:40,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:40,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:58:41,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494243365] [2020-10-12 20:58:41,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:41,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:41,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381074891] [2020-10-12 20:58:41,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:41,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:41,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:41,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:41,002 INFO L87 Difference]: Start difference. First operand 585 states and 932 transitions. Second operand 5 states. [2020-10-12 20:58:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:41,776 INFO L93 Difference]: Finished difference Result 1341 states and 2137 transitions. [2020-10-12 20:58:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:41,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:58:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:41,779 INFO L225 Difference]: With dead ends: 1341 [2020-10-12 20:58:41,779 INFO L226 Difference]: Without dead ends: 780 [2020-10-12 20:58:41,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-10-12 20:58:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 641. [2020-10-12 20:58:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-12 20:58:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1030 transitions. [2020-10-12 20:58:41,799 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1030 transitions. Word has length 105 [2020-10-12 20:58:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:41,799 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 1030 transitions. [2020-10-12 20:58:41,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1030 transitions. [2020-10-12 20:58:41,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:58:41,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:41,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:41,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:58:41,802 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:41,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:41,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1360713004, now seen corresponding path program 1 times [2020-10-12 20:58:41,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:41,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183701785] [2020-10-12 20:58:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:41,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:43,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:43,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:58:43,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-10-12 20:58:43,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:58:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:58:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:43,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:43,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:43,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:43,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:43,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:43,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 20:58:43,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183701785] [2020-10-12 20:58:43,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:43,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:43,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632623126] [2020-10-12 20:58:43,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:43,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:43,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:43,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:43,283 INFO L87 Difference]: Start difference. First operand 641 states and 1030 transitions. Second operand 5 states. [2020-10-12 20:58:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:43,934 INFO L93 Difference]: Finished difference Result 1296 states and 2080 transitions. [2020-10-12 20:58:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:43,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:58:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:43,937 INFO L225 Difference]: With dead ends: 1296 [2020-10-12 20:58:43,937 INFO L226 Difference]: Without dead ends: 679 [2020-10-12 20:58:43,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2020-10-12 20:58:43,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 641. [2020-10-12 20:58:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-12 20:58:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1028 transitions. [2020-10-12 20:58:43,958 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1028 transitions. Word has length 105 [2020-10-12 20:58:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:43,959 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 1028 transitions. [2020-10-12 20:58:43,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1028 transitions. [2020-10-12 20:58:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:58:43,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:43,961 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:43,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:58:43,961 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:43,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2027384234, now seen corresponding path program 1 times [2020-10-12 20:58:43,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:43,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757120664] [2020-10-12 20:58:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:44,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 20:58:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-10-12 20:58:45,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:58:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:58:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:45,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:45,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:45,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:45,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 20:58:45,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757120664] [2020-10-12 20:58:45,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:45,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:45,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98955053] [2020-10-12 20:58:45,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:45,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:45,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:45,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:45,448 INFO L87 Difference]: Start difference. First operand 641 states and 1028 transitions. Second operand 5 states. [2020-10-12 20:58:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:46,090 INFO L93 Difference]: Finished difference Result 1292 states and 2072 transitions. [2020-10-12 20:58:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:46,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:58:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:46,093 INFO L225 Difference]: With dead ends: 1292 [2020-10-12 20:58:46,094 INFO L226 Difference]: Without dead ends: 675 [2020-10-12 20:58:46,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-12 20:58:46,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 641. [2020-10-12 20:58:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-12 20:58:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1026 transitions. [2020-10-12 20:58:46,112 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1026 transitions. Word has length 106 [2020-10-12 20:58:46,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:46,112 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 1026 transitions. [2020-10-12 20:58:46,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:46,113 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1026 transitions. [2020-10-12 20:58:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:58:46,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:46,114 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:46,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:58:46,115 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:46,115 INFO L82 PathProgramCache]: Analyzing trace with hash -507052681, now seen corresponding path program 1 times [2020-10-12 20:58:46,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:46,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093550958] [2020-10-12 20:58:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:46,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:51,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 20:58:51,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:58:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:58:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:58:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:51,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:51,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:51,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:51,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-12 20:58:51,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093550958] [2020-10-12 20:58:51,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:51,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:51,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285893490] [2020-10-12 20:58:51,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:51,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:51,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:51,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:51,211 INFO L87 Difference]: Start difference. First operand 641 states and 1026 transitions. Second operand 5 states. [2020-10-12 20:58:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:51,765 INFO L93 Difference]: Finished difference Result 1262 states and 2029 transitions. [2020-10-12 20:58:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:51,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:58:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:51,768 INFO L225 Difference]: With dead ends: 1262 [2020-10-12 20:58:51,768 INFO L226 Difference]: Without dead ends: 645 [2020-10-12 20:58:51,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-10-12 20:58:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 641. [2020-10-12 20:58:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-12 20:58:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1025 transitions. [2020-10-12 20:58:51,783 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1025 transitions. Word has length 106 [2020-10-12 20:58:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:51,783 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 1025 transitions. [2020-10-12 20:58:51,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1025 transitions. [2020-10-12 20:58:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:58:51,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:51,785 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:51,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:58:51,786 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash -460947131, now seen corresponding path program 1 times [2020-10-12 20:58:51,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:51,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245768435] [2020-10-12 20:58:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:52,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:52,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:58:52,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:52,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-12 20:58:52,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:58:52,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:52,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:52,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:52,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:52,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:52,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:52,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:52,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:52,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:52,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245768435] [2020-10-12 20:58:52,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:52,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:52,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994299305] [2020-10-12 20:58:52,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:52,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:52,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:52,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:52,483 INFO L87 Difference]: Start difference. First operand 641 states and 1025 transitions. Second operand 5 states. [2020-10-12 20:58:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:53,340 INFO L93 Difference]: Finished difference Result 1455 states and 2326 transitions. [2020-10-12 20:58:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:53,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:58:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:53,345 INFO L225 Difference]: With dead ends: 1455 [2020-10-12 20:58:53,345 INFO L226 Difference]: Without dead ends: 838 [2020-10-12 20:58:53,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-10-12 20:58:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 643. [2020-10-12 20:58:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-12 20:58:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1027 transitions. [2020-10-12 20:58:53,363 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1027 transitions. Word has length 113 [2020-10-12 20:58:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:53,363 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 1027 transitions. [2020-10-12 20:58:53,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1027 transitions. [2020-10-12 20:58:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:58:53,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:53,365 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] [2020-10-12 20:58:53,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:58:53,366 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:53,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2118551642, now seen corresponding path program 1 times [2020-10-12 20:58:53,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:53,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179369176] [2020-10-12 20:58:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:54,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:58:54,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:54,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-12 20:58:54,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:58:54,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:54,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:54,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:54,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:54,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:54,232 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 20:58:54,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179369176] [2020-10-12 20:58:54,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:54,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:54,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981804962] [2020-10-12 20:58:54,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:54,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:54,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:54,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:54,233 INFO L87 Difference]: Start difference. First operand 643 states and 1027 transitions. Second operand 5 states. [2020-10-12 20:58:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:55,077 INFO L93 Difference]: Finished difference Result 1441 states and 2300 transitions. [2020-10-12 20:58:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:55,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:58:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:55,082 INFO L225 Difference]: With dead ends: 1441 [2020-10-12 20:58:55,082 INFO L226 Difference]: Without dead ends: 822 [2020-10-12 20:58:55,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:55,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-12 20:58:55,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 701. [2020-10-12 20:58:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-10-12 20:58:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1127 transitions. [2020-10-12 20:58:55,096 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1127 transitions. Word has length 114 [2020-10-12 20:58:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:55,096 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1127 transitions. [2020-10-12 20:58:55,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1127 transitions. [2020-10-12 20:58:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:58:55,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:55,098 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:55,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:58:55,099 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash 199758448, now seen corresponding path program 1 times [2020-10-12 20:58:55,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:55,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416779715] [2020-10-12 20:58:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:55,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:58:55,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-12 20:58:55,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:58:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:55,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:55,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:55,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:55,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:55,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:55,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:55,894 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 20:58:55,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416779715] [2020-10-12 20:58:55,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:55,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:55,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285840273] [2020-10-12 20:58:55,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:55,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:55,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:55,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:55,896 INFO L87 Difference]: Start difference. First operand 701 states and 1127 transitions. Second operand 5 states. [2020-10-12 20:58:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:56,750 INFO L93 Difference]: Finished difference Result 1499 states and 2398 transitions. [2020-10-12 20:58:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:56,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:58:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:56,760 INFO L225 Difference]: With dead ends: 1499 [2020-10-12 20:58:56,760 INFO L226 Difference]: Without dead ends: 822 [2020-10-12 20:58:56,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-12 20:58:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 701. [2020-10-12 20:58:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-10-12 20:58:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1125 transitions. [2020-10-12 20:58:56,781 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1125 transitions. Word has length 116 [2020-10-12 20:58:56,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:56,781 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1125 transitions. [2020-10-12 20:58:56,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1125 transitions. [2020-10-12 20:58:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:58:56,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:56,783 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:56,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:58:56,784 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:56,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:56,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2028381851, now seen corresponding path program 1 times [2020-10-12 20:58:56,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:56,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540382731] [2020-10-12 20:58:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:57,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:57,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 20:58:57,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:58:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-12 20:58:57,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:58:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:57,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:57,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:57,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:57,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:57,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:57,544 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 20:58:57,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540382731] [2020-10-12 20:58:57,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:57,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:57,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668343406] [2020-10-12 20:58:57,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:57,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:57,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:57,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:57,545 INFO L87 Difference]: Start difference. First operand 701 states and 1125 transitions. Second operand 5 states. [2020-10-12 20:58:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:58,386 INFO L93 Difference]: Finished difference Result 1495 states and 2388 transitions. [2020-10-12 20:58:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:58,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-12 20:58:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:58,390 INFO L225 Difference]: With dead ends: 1495 [2020-10-12 20:58:58,390 INFO L226 Difference]: Without dead ends: 818 [2020-10-12 20:58:58,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-12 20:58:58,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 701. [2020-10-12 20:58:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-10-12 20:58:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1123 transitions. [2020-10-12 20:58:58,406 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1123 transitions. Word has length 117 [2020-10-12 20:58:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:58,407 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1123 transitions. [2020-10-12 20:58:58,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1123 transitions. [2020-10-12 20:58:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:58:58,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:58,409 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:58,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:58:58,409 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash -439182019, now seen corresponding path program 1 times [2020-10-12 20:58:58,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:58,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795616292] [2020-10-12 20:58:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:58,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:58,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 20:58:58,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:58,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 20:58:58,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:58,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:58,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:58,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:58:58,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:58,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:58,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:58,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:58,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:58:58,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:58:58,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795616292] [2020-10-12 20:58:58,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:58,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:58,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281779530] [2020-10-12 20:58:58,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:58,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:58,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:58,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:58,710 INFO L87 Difference]: Start difference. First operand 701 states and 1123 transitions. Second operand 5 states. [2020-10-12 20:58:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:59,541 INFO L93 Difference]: Finished difference Result 1489 states and 2376 transitions. [2020-10-12 20:58:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:59,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-12 20:58:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:59,547 INFO L225 Difference]: With dead ends: 1489 [2020-10-12 20:58:59,547 INFO L226 Difference]: Without dead ends: 812 [2020-10-12 20:58:59,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-12 20:58:59,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 707. [2020-10-12 20:58:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-10-12 20:58:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1133 transitions. [2020-10-12 20:58:59,562 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1133 transitions. Word has length 117 [2020-10-12 20:58:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:59,562 INFO L479 AbstractCegarLoop]: Abstraction has 707 states and 1133 transitions. [2020-10-12 20:58:59,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1133 transitions. [2020-10-12 20:58:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:58:59,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:59,564 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:59,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:58:59,564 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:59,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1292972193, now seen corresponding path program 1 times [2020-10-12 20:58:59,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:59,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300012990] [2020-10-12 20:58:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:59:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-12 20:59:00,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:59:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:00,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:00,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:00,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300012990] [2020-10-12 20:59:00,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:00,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:00,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501954120] [2020-10-12 20:59:00,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:00,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:00,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:00,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:00,237 INFO L87 Difference]: Start difference. First operand 707 states and 1133 transitions. Second operand 5 states. [2020-10-12 20:59:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:01,050 INFO L93 Difference]: Finished difference Result 1495 states and 2384 transitions. [2020-10-12 20:59:01,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:01,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:59:01,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:01,055 INFO L225 Difference]: With dead ends: 1495 [2020-10-12 20:59:01,055 INFO L226 Difference]: Without dead ends: 812 [2020-10-12 20:59:01,056 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 20:59:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-12 20:59:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 709. [2020-10-12 20:59:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-10-12 20:59:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1135 transitions. [2020-10-12 20:59:01,071 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1135 transitions. Word has length 119 [2020-10-12 20:59:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:01,072 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 1135 transitions. [2020-10-12 20:59:01,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1135 transitions. [2020-10-12 20:59:01,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:59:01,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:01,073 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:01,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:59:01,073 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:01,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:01,074 INFO L82 PathProgramCache]: Analyzing trace with hash -217345796, now seen corresponding path program 1 times [2020-10-12 20:59:01,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:01,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994812263] [2020-10-12 20:59:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:01,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:01,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:06,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:06,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:59:06,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:06,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:59:06,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 20:59:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:59:06,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:06,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:06,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 20:59:06,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994812263] [2020-10-12 20:59:06,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:06,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:06,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461122289] [2020-10-12 20:59:06,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:06,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:06,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:06,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:06,190 INFO L87 Difference]: Start difference. First operand 709 states and 1135 transitions. Second operand 5 states. [2020-10-12 20:59:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:07,141 INFO L93 Difference]: Finished difference Result 1643 states and 2633 transitions. [2020-10-12 20:59:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:07,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:59:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:07,146 INFO L225 Difference]: With dead ends: 1643 [2020-10-12 20:59:07,146 INFO L226 Difference]: Without dead ends: 958 [2020-10-12 20:59:07,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-10-12 20:59:07,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 743. [2020-10-12 20:59:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-10-12 20:59:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1182 transitions. [2020-10-12 20:59:07,166 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1182 transitions. Word has length 120 [2020-10-12 20:59:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:07,166 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1182 transitions. [2020-10-12 20:59:07,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1182 transitions. [2020-10-12 20:59:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:59:07,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:07,167 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:07,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:59:07,167 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:07,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1038175019, now seen corresponding path program 1 times [2020-10-12 20:59:07,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:07,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198421725] [2020-10-12 20:59:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:12,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:12,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:59:12,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:59:12,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-12 20:59:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:59:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:12,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:12,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:12,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:12,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:12,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:12,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:12,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-12 20:59:12,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198421725] [2020-10-12 20:59:12,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:12,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:12,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907571539] [2020-10-12 20:59:12,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:12,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:12,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:12,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:12,265 INFO L87 Difference]: Start difference. First operand 743 states and 1182 transitions. Second operand 5 states. [2020-10-12 20:59:13,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:13,110 INFO L93 Difference]: Finished difference Result 1594 states and 2541 transitions. [2020-10-12 20:59:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:13,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:59:13,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:13,114 INFO L225 Difference]: With dead ends: 1594 [2020-10-12 20:59:13,114 INFO L226 Difference]: Without dead ends: 875 [2020-10-12 20:59:13,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:13,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2020-10-12 20:59:13,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 803. [2020-10-12 20:59:13,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-10-12 20:59:13,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1288 transitions. [2020-10-12 20:59:13,136 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1288 transitions. Word has length 120 [2020-10-12 20:59:13,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:13,136 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1288 transitions. [2020-10-12 20:59:13,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1288 transitions. [2020-10-12 20:59:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:59:13,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:13,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:13,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:59:13,138 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:13,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:13,139 INFO L82 PathProgramCache]: Analyzing trace with hash -26575158, now seen corresponding path program 1 times [2020-10-12 20:59:13,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:13,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752608061] [2020-10-12 20:59:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:13,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:13,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:13,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:13,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:59:13,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-12 20:59:13,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:59:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:13,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:13,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:13,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:13,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:13,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:13,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:13,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:13,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752608061] [2020-10-12 20:59:13,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:13,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:13,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698798456] [2020-10-12 20:59:13,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:13,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:13,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:13,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:13,860 INFO L87 Difference]: Start difference. First operand 803 states and 1288 transitions. Second operand 5 states. [2020-10-12 20:59:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:14,701 INFO L93 Difference]: Finished difference Result 1685 states and 2690 transitions. [2020-10-12 20:59:14,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:14,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:59:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:14,706 INFO L225 Difference]: With dead ends: 1685 [2020-10-12 20:59:14,706 INFO L226 Difference]: Without dead ends: 906 [2020-10-12 20:59:14,707 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 20:59:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-10-12 20:59:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 807. [2020-10-12 20:59:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-10-12 20:59:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1294 transitions. [2020-10-12 20:59:14,724 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1294 transitions. Word has length 120 [2020-10-12 20:59:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:14,724 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1294 transitions. [2020-10-12 20:59:14,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1294 transitions. [2020-10-12 20:59:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:59:14,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:14,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:14,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:59:14,726 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:14,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:14,726 INFO L82 PathProgramCache]: Analyzing trace with hash -672007367, now seen corresponding path program 1 times [2020-10-12 20:59:14,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:14,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463399857] [2020-10-12 20:59:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:15,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:15,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:59:15,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-12 20:59:15,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:59:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:15,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:15,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:15,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:15,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:15,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:15,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463399857] [2020-10-12 20:59:15,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:15,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:15,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107251274] [2020-10-12 20:59:15,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:15,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:15,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:15,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:15,387 INFO L87 Difference]: Start difference. First operand 807 states and 1294 transitions. Second operand 5 states. [2020-10-12 20:59:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:16,184 INFO L93 Difference]: Finished difference Result 1681 states and 2684 transitions. [2020-10-12 20:59:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:16,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:59:16,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:16,189 INFO L225 Difference]: With dead ends: 1681 [2020-10-12 20:59:16,189 INFO L226 Difference]: Without dead ends: 898 [2020-10-12 20:59:16,190 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 20:59:16,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-12 20:59:16,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 807. [2020-10-12 20:59:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-10-12 20:59:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1292 transitions. [2020-10-12 20:59:16,207 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1292 transitions. Word has length 120 [2020-10-12 20:59:16,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:16,207 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1292 transitions. [2020-10-12 20:59:16,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1292 transitions. [2020-10-12 20:59:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:59:16,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:16,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:16,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:59:16,209 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash 420348304, now seen corresponding path program 1 times [2020-10-12 20:59:16,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:16,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324486503] [2020-10-12 20:59:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:16,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:59:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-12 20:59:16,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:59:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:16,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:16,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:16,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:59:16,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:16,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:16,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324486503] [2020-10-12 20:59:16,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:16,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:16,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776171932] [2020-10-12 20:59:16,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:16,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:16,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:16,898 INFO L87 Difference]: Start difference. First operand 807 states and 1292 transitions. Second operand 5 states. [2020-10-12 20:59:17,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:17,748 INFO L93 Difference]: Finished difference Result 1677 states and 2676 transitions. [2020-10-12 20:59:17,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:17,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:59:17,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:17,752 INFO L225 Difference]: With dead ends: 1677 [2020-10-12 20:59:17,752 INFO L226 Difference]: Without dead ends: 894 [2020-10-12 20:59:17,753 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 20:59:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-12 20:59:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 809. [2020-10-12 20:59:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-10-12 20:59:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1294 transitions. [2020-10-12 20:59:17,770 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1294 transitions. Word has length 121 [2020-10-12 20:59:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:17,770 INFO L479 AbstractCegarLoop]: Abstraction has 809 states and 1294 transitions. [2020-10-12 20:59:17,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1294 transitions. [2020-10-12 20:59:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:59:17,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:17,772 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:17,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:59:17,772 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1308122043, now seen corresponding path program 1 times [2020-10-12 20:59:17,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:17,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387345899] [2020-10-12 20:59:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:17,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:17,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:59:17,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:17,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 20:59:17,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:17,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:17,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:17,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:59:17,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:18,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:18,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:18,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:18,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:18,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387345899] [2020-10-12 20:59:18,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:18,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:18,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097611437] [2020-10-12 20:59:18,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:18,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:18,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:18,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:18,037 INFO L87 Difference]: Start difference. First operand 809 states and 1294 transitions. Second operand 5 states. [2020-10-12 20:59:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:18,868 INFO L93 Difference]: Finished difference Result 1679 states and 2676 transitions. [2020-10-12 20:59:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:18,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:59:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:18,870 INFO L225 Difference]: With dead ends: 1679 [2020-10-12 20:59:18,870 INFO L226 Difference]: Without dead ends: 894 [2020-10-12 20:59:18,872 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 20:59:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-12 20:59:18,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 811. [2020-10-12 20:59:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-10-12 20:59:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1296 transitions. [2020-10-12 20:59:18,888 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1296 transitions. Word has length 122 [2020-10-12 20:59:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:18,888 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 1296 transitions. [2020-10-12 20:59:18,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1296 transitions. [2020-10-12 20:59:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:59:18,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:18,890 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:18,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:59:18,890 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:18,891 INFO L82 PathProgramCache]: Analyzing trace with hash -625504737, now seen corresponding path program 1 times [2020-10-12 20:59:18,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:18,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987220390] [2020-10-12 20:59:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:23,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:23,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:59:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:59:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:59:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:59:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:23,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:23,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 20:59:24,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987220390] [2020-10-12 20:59:24,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:24,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:24,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859205538] [2020-10-12 20:59:24,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:24,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:24,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:24,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:24,013 INFO L87 Difference]: Start difference. First operand 811 states and 1296 transitions. Second operand 5 states. [2020-10-12 20:59:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:24,914 INFO L93 Difference]: Finished difference Result 1722 states and 2757 transitions. [2020-10-12 20:59:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:24,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:59:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:24,916 INFO L225 Difference]: With dead ends: 1722 [2020-10-12 20:59:24,916 INFO L226 Difference]: Without dead ends: 935 [2020-10-12 20:59:24,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-10-12 20:59:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 867. [2020-10-12 20:59:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-12 20:59:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1394 transitions. [2020-10-12 20:59:24,934 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1394 transitions. Word has length 123 [2020-10-12 20:59:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:24,935 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1394 transitions. [2020-10-12 20:59:24,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1394 transitions. [2020-10-12 20:59:24,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:59:24,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:24,936 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:24,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:59:24,937 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:24,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:24,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1360445675, now seen corresponding path program 1 times [2020-10-12 20:59:24,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:24,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375023715] [2020-10-12 20:59:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:25,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:59:25,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 20:59:25,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:59:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:59:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:59:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:25,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:25,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:25,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:25,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:25,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:25,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375023715] [2020-10-12 20:59:25,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:25,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:25,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589686472] [2020-10-12 20:59:25,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:25,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:25,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:25,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:25,179 INFO L87 Difference]: Start difference. First operand 867 states and 1394 transitions. Second operand 5 states. [2020-10-12 20:59:26,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:26,016 INFO L93 Difference]: Finished difference Result 1789 states and 2868 transitions. [2020-10-12 20:59:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:26,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:59:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:26,019 INFO L225 Difference]: With dead ends: 1789 [2020-10-12 20:59:26,019 INFO L226 Difference]: Without dead ends: 946 [2020-10-12 20:59:26,020 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 20:59:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-10-12 20:59:26,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 869. [2020-10-12 20:59:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-10-12 20:59:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1396 transitions. [2020-10-12 20:59:26,036 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1396 transitions. Word has length 123 [2020-10-12 20:59:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:26,037 INFO L479 AbstractCegarLoop]: Abstraction has 869 states and 1396 transitions. [2020-10-12 20:59:26,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1396 transitions. [2020-10-12 20:59:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:59:26,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:26,039 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:26,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:59:26,039 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:26,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:26,039 INFO L82 PathProgramCache]: Analyzing trace with hash -252536978, now seen corresponding path program 1 times [2020-10-12 20:59:26,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:26,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197289271] [2020-10-12 20:59:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:31,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:59:31,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:31,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:59:31,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:59:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:59:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:31,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:31,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:31,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:31,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:31,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:31,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 15 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:59:31,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197289271] [2020-10-12 20:59:31,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:31,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:59:31,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368633594] [2020-10-12 20:59:31,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:59:31,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:31,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:59:31,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:59:31,405 INFO L87 Difference]: Start difference. First operand 869 states and 1396 transitions. Second operand 11 states. [2020-10-12 20:59:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:34,441 INFO L93 Difference]: Finished difference Result 2136 states and 3445 transitions. [2020-10-12 20:59:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:59:34,442 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-10-12 20:59:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:34,446 INFO L225 Difference]: With dead ends: 2136 [2020-10-12 20:59:34,446 INFO L226 Difference]: Without dead ends: 1291 [2020-10-12 20:59:34,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:59:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-10-12 20:59:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1248. [2020-10-12 20:59:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-10-12 20:59:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2024 transitions. [2020-10-12 20:59:34,482 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2024 transitions. Word has length 124 [2020-10-12 20:59:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:34,482 INFO L479 AbstractCegarLoop]: Abstraction has 1248 states and 2024 transitions. [2020-10-12 20:59:34,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:59:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2024 transitions. [2020-10-12 20:59:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:59:34,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:34,484 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:34,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:59:34,484 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:34,485 INFO L82 PathProgramCache]: Analyzing trace with hash 235309261, now seen corresponding path program 1 times [2020-10-12 20:59:34,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:34,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146563300] [2020-10-12 20:59:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:34,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:38,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:38,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:59:38,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:38,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3671 [2020-10-12 20:59:38,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 20:59:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:59:38,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:38,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:38,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:38,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:38,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:38,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:38,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 20:59:38,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146563300] [2020-10-12 20:59:38,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:38,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:38,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232968743] [2020-10-12 20:59:38,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:38,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:38,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:38,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:38,251 INFO L87 Difference]: Start difference. First operand 1248 states and 2024 transitions. Second operand 5 states. [2020-10-12 20:59:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:39,284 INFO L93 Difference]: Finished difference Result 2654 states and 4286 transitions. [2020-10-12 20:59:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:39,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:59:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:39,289 INFO L225 Difference]: With dead ends: 2654 [2020-10-12 20:59:39,289 INFO L226 Difference]: Without dead ends: 1430 [2020-10-12 20:59:39,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2020-10-12 20:59:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1260. [2020-10-12 20:59:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1260 states. [2020-10-12 20:59:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 2045 transitions. [2020-10-12 20:59:39,331 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 2045 transitions. Word has length 124 [2020-10-12 20:59:39,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:39,331 INFO L479 AbstractCegarLoop]: Abstraction has 1260 states and 2045 transitions. [2020-10-12 20:59:39,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:39,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 2045 transitions. [2020-10-12 20:59:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:59:39,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:39,334 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:39,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:59:39,334 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:39,335 INFO L82 PathProgramCache]: Analyzing trace with hash -656557954, now seen corresponding path program 1 times [2020-10-12 20:59:39,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:39,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011250719] [2020-10-12 20:59:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:42,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:44,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:44,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:59:44,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:59:44,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:59:44,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:59:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:59:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:59:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:44,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:44,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:44,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:44,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:44,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:59:44,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011250719] [2020-10-12 20:59:44,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:44,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:59:44,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833261172] [2020-10-12 20:59:44,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:59:44,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:44,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:59:44,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:44,763 INFO L87 Difference]: Start difference. First operand 1260 states and 2045 transitions. Second operand 9 states. [2020-10-12 20:59:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:47,036 INFO L93 Difference]: Finished difference Result 2941 states and 4757 transitions. [2020-10-12 20:59:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:59:47,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2020-10-12 20:59:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:47,042 INFO L225 Difference]: With dead ends: 2941 [2020-10-12 20:59:47,042 INFO L226 Difference]: Without dead ends: 1705 [2020-10-12 20:59:47,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:59:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2020-10-12 20:59:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1288. [2020-10-12 20:59:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-10-12 20:59:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 2093 transitions. [2020-10-12 20:59:47,092 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 2093 transitions. Word has length 125 [2020-10-12 20:59:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:47,093 INFO L479 AbstractCegarLoop]: Abstraction has 1288 states and 2093 transitions. [2020-10-12 20:59:47,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:59:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 2093 transitions. [2020-10-12 20:59:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:59:47,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:47,096 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:47,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:59:47,096 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:47,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1646913809, now seen corresponding path program 1 times [2020-10-12 20:59:47,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:47,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742083875] [2020-10-12 20:59:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:47,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:52,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:59:52,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:59:52,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:59:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:59:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:52,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-12 20:59:52,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742083875] [2020-10-12 20:59:52,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:52,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:52,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971217781] [2020-10-12 20:59:52,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:52,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:52,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:52,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:52,242 INFO L87 Difference]: Start difference. First operand 1288 states and 2093 transitions. Second operand 5 states. [2020-10-12 20:59:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:53,045 INFO L93 Difference]: Finished difference Result 3796 states and 6172 transitions. [2020-10-12 20:59:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:53,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-12 20:59:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:53,051 INFO L225 Difference]: With dead ends: 3796 [2020-10-12 20:59:53,051 INFO L226 Difference]: Without dead ends: 2532 [2020-10-12 20:59:53,054 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 20:59:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2020-10-12 20:59:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2530. [2020-10-12 20:59:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2530 states. [2020-10-12 20:59:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4061 transitions. [2020-10-12 20:59:53,153 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4061 transitions. Word has length 126 [2020-10-12 20:59:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:53,153 INFO L479 AbstractCegarLoop]: Abstraction has 2530 states and 4061 transitions. [2020-10-12 20:59:53,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4061 transitions. [2020-10-12 20:59:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:59:53,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:53,157 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:53,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:59:53,158 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:53,158 INFO L82 PathProgramCache]: Analyzing trace with hash 293668205, now seen corresponding path program 1 times [2020-10-12 20:59:53,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:53,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723024715] [2020-10-12 20:59:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:58,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:59:58,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:58,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:59:58,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 20:59:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:59:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:58,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:58,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:58,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:58,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:58,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:59:58,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723024715] [2020-10-12 20:59:58,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:58,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:58,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172543942] [2020-10-12 20:59:58,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:58,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:58,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:58,262 INFO L87 Difference]: Start difference. First operand 2530 states and 4061 transitions. Second operand 5 states. [2020-10-12 20:59:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:59,300 INFO L93 Difference]: Finished difference Result 5501 states and 8794 transitions. [2020-10-12 20:59:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:59,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-12 20:59:59,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:59,308 INFO L225 Difference]: With dead ends: 5501 [2020-10-12 20:59:59,308 INFO L226 Difference]: Without dead ends: 3010 [2020-10-12 20:59:59,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-10-12 20:59:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 2536. [2020-10-12 20:59:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2536 states. [2020-10-12 20:59:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4055 transitions. [2020-10-12 20:59:59,407 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4055 transitions. Word has length 126 [2020-10-12 20:59:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:59,407 INFO L479 AbstractCegarLoop]: Abstraction has 2536 states and 4055 transitions. [2020-10-12 20:59:59,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:59:59,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4055 transitions. [2020-10-12 20:59:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:59:59,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:59,412 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 20:59:59,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:59:59,413 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:59,413 INFO L82 PathProgramCache]: Analyzing trace with hash 117021552, now seen corresponding path program 1 times [2020-10-12 20:59:59,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:59,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067611077] [2020-10-12 20:59:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:59,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 20:59:59,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 20:59:59,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:59:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:59:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:59,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:59:59,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:59,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:59:59,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:59,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:59,658 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 20:59:59,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067611077] [2020-10-12 20:59:59,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:59,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:59:59,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473296000] [2020-10-12 20:59:59,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:59:59,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:59,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:59:59,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:59,659 INFO L87 Difference]: Start difference. First operand 2536 states and 4055 transitions. Second operand 5 states. [2020-10-12 21:00:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:00,734 INFO L93 Difference]: Finished difference Result 3580 states and 5709 transitions. [2020-10-12 21:00:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:00,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 21:00:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:00,739 INFO L225 Difference]: With dead ends: 3580 [2020-10-12 21:00:00,739 INFO L226 Difference]: Without dead ends: 2745 [2020-10-12 21:00:00,741 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 21:00:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2020-10-12 21:00:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2613. [2020-10-12 21:00:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-12 21:00:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 4194 transitions. [2020-10-12 21:00:00,833 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 4194 transitions. Word has length 129 [2020-10-12 21:00:00,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:00,834 INFO L479 AbstractCegarLoop]: Abstraction has 2613 states and 4194 transitions. [2020-10-12 21:00:00,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 4194 transitions. [2020-10-12 21:00:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 21:00:00,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:00,839 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:00,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 21:00:00,839 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:00,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:00,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1676704990, now seen corresponding path program 1 times [2020-10-12 21:00:00,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:00,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884826580] [2020-10-12 21:00:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:01,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 21:00:01,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-12 21:00:01,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 21:00:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 21:00:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:01,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:01,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:01,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:01,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:01,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:01,168 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 21:00:01,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884826580] [2020-10-12 21:00:01,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:01,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:01,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982165321] [2020-10-12 21:00:01,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:01,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:01,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:01,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:01,170 INFO L87 Difference]: Start difference. First operand 2613 states and 4194 transitions. Second operand 5 states. [2020-10-12 21:00:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:02,311 INFO L93 Difference]: Finished difference Result 3643 states and 5825 transitions. [2020-10-12 21:00:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:02,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-12 21:00:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:02,315 INFO L225 Difference]: With dead ends: 3643 [2020-10-12 21:00:02,315 INFO L226 Difference]: Without dead ends: 2731 [2020-10-12 21:00:02,316 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 21:00:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2020-10-12 21:00:02,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2591. [2020-10-12 21:00:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2591 states. [2020-10-12 21:00:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 4152 transitions. [2020-10-12 21:00:02,409 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 4152 transitions. Word has length 130 [2020-10-12 21:00:02,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:02,409 INFO L479 AbstractCegarLoop]: Abstraction has 2591 states and 4152 transitions. [2020-10-12 21:00:02,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:02,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 4152 transitions. [2020-10-12 21:00:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 21:00:02,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:02,414 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:02,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 21:00:02,415 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:02,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:02,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1043205131, now seen corresponding path program 1 times [2020-10-12 21:00:02,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:02,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469232911] [2020-10-12 21:00:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:02,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:04,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 21:00:04,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-12 21:00:04,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 21:00:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:04,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:04,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:04,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:04,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 21:00:04,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469232911] [2020-10-12 21:00:04,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:04,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:04,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118083208] [2020-10-12 21:00:04,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:04,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:04,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:04,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:04,325 INFO L87 Difference]: Start difference. First operand 2591 states and 4152 transitions. Second operand 5 states. [2020-10-12 21:00:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:05,247 INFO L93 Difference]: Finished difference Result 5337 states and 8515 transitions. [2020-10-12 21:00:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:05,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-12 21:00:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:05,251 INFO L225 Difference]: With dead ends: 5337 [2020-10-12 21:00:05,251 INFO L226 Difference]: Without dead ends: 2783 [2020-10-12 21:00:05,254 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 21:00:05,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2020-10-12 21:00:05,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2591. [2020-10-12 21:00:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2591 states. [2020-10-12 21:00:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 4146 transitions. [2020-10-12 21:00:05,342 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 4146 transitions. Word has length 133 [2020-10-12 21:00:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:05,342 INFO L479 AbstractCegarLoop]: Abstraction has 2591 states and 4146 transitions. [2020-10-12 21:00:05,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 4146 transitions. [2020-10-12 21:00:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 21:00:05,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:05,347 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:05,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 21:00:05,348 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:05,348 INFO L82 PathProgramCache]: Analyzing trace with hash -915369655, now seen corresponding path program 1 times [2020-10-12 21:00:05,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:05,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376277290] [2020-10-12 21:00:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 21:00:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:07,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:07,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:07,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:07,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:07,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 21:00:07,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376277290] [2020-10-12 21:00:07,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:07,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:00:07,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279170519] [2020-10-12 21:00:07,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:00:07,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:07,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:00:07,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:07,252 INFO L87 Difference]: Start difference. First operand 2591 states and 4146 transitions. Second operand 5 states. [2020-10-12 21:00:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:08,135 INFO L93 Difference]: Finished difference Result 5279 states and 8417 transitions. [2020-10-12 21:00:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:08,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-12 21:00:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:08,138 INFO L225 Difference]: With dead ends: 5279 [2020-10-12 21:00:08,139 INFO L226 Difference]: Without dead ends: 2725 [2020-10-12 21:00:08,142 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 21:00:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2020-10-12 21:00:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2591. [2020-10-12 21:00:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2591 states. [2020-10-12 21:00:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 4140 transitions. [2020-10-12 21:00:08,199 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 4140 transitions. Word has length 133 [2020-10-12 21:00:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:08,199 INFO L479 AbstractCegarLoop]: Abstraction has 2591 states and 4140 transitions. [2020-10-12 21:00:08,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:00:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 4140 transitions. [2020-10-12 21:00:08,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 21:00:08,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:08,203 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:08,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 21:00:08,203 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:08,203 INFO L82 PathProgramCache]: Analyzing trace with hash 140694004, now seen corresponding path program 1 times [2020-10-12 21:00:08,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:08,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868372707] [2020-10-12 21:00:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:08,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:13,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:13,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 21:00:13,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:13,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 21:00:13,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:13,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 21:00:13,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:13,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 21:00:13,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:13,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:13,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:13,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:13,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:13,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:13,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 63 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 21:00:13,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868372707] [2020-10-12 21:00:13,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:13,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 21:00:13,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123253488] [2020-10-12 21:00:13,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 21:00:13,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:13,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 21:00:13,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:00:13,757 INFO L87 Difference]: Start difference. First operand 2591 states and 4140 transitions. Second operand 11 states. [2020-10-12 21:00:17,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:17,320 INFO L93 Difference]: Finished difference Result 5423 states and 8612 transitions. [2020-10-12 21:00:17,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 21:00:17,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 138 [2020-10-12 21:00:17,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:17,324 INFO L225 Difference]: With dead ends: 5423 [2020-10-12 21:00:17,324 INFO L226 Difference]: Without dead ends: 2849 [2020-10-12 21:00:17,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 9 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-12 21:00:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2020-10-12 21:00:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2553. [2020-10-12 21:00:17,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2553 states. [2020-10-12 21:00:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4092 transitions. [2020-10-12 21:00:17,384 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4092 transitions. Word has length 138 [2020-10-12 21:00:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:17,384 INFO L479 AbstractCegarLoop]: Abstraction has 2553 states and 4092 transitions. [2020-10-12 21:00:17,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 21:00:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4092 transitions. [2020-10-12 21:00:17,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 21:00:17,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:17,387 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-12 21:00:17,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 21:00:17,388 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:17,388 INFO L82 PathProgramCache]: Analyzing trace with hash 443178018, now seen corresponding path program 1 times [2020-10-12 21:00:17,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:17,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569364618] [2020-10-12 21:00:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:19,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:19,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 21:00:19,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:00:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1888 [2020-10-12 21:00:19,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 21:00:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 21:00:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:19,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:19,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:19,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:19,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569364618] [2020-10-12 21:00:19,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:19,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 21:00:19,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511680718] [2020-10-12 21:00:19,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:00:19,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:19,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:00:19,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:00:19,720 INFO L87 Difference]: Start difference. First operand 2553 states and 4092 transitions. Second operand 10 states. [2020-10-12 21:00:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:24,352 INFO L93 Difference]: Finished difference Result 8311 states and 13281 transitions. [2020-10-12 21:00:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 21:00:24,352 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-10-12 21:00:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:24,358 INFO L225 Difference]: With dead ends: 8311 [2020-10-12 21:00:24,358 INFO L226 Difference]: Without dead ends: 5795 [2020-10-12 21:00:24,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-12 21:00:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2020-10-12 21:00:24,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 4810. [2020-10-12 21:00:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4810 states. [2020-10-12 21:00:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 7847 transitions. [2020-10-12 21:00:24,488 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 7847 transitions. Word has length 144 [2020-10-12 21:00:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:24,488 INFO L479 AbstractCegarLoop]: Abstraction has 4810 states and 7847 transitions. [2020-10-12 21:00:24,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:00:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 7847 transitions. [2020-10-12 21:00:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 21:00:24,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:24,494 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:24,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 21:00:24,495 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:24,495 INFO L82 PathProgramCache]: Analyzing trace with hash 741268179, now seen corresponding path program 1 times [2020-10-12 21:00:24,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:24,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883874133] [2020-10-12 21:00:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:24,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:28,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:28,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 21:00:28,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:28,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3940 [2020-10-12 21:00:28,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 21:00:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 21:00:28,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:28,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:28,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:28,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:28,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 23 proven. 92 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:29,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883874133] [2020-10-12 21:00:29,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:29,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 21:00:29,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975755610] [2020-10-12 21:00:29,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:00:29,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:29,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:00:29,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:00:29,096 INFO L87 Difference]: Start difference. First operand 4810 states and 7847 transitions. Second operand 10 states. [2020-10-12 21:00:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:31,400 INFO L93 Difference]: Finished difference Result 7152 states and 11542 transitions. [2020-10-12 21:00:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 21:00:31,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-10-12 21:00:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:31,408 INFO L225 Difference]: With dead ends: 7152 [2020-10-12 21:00:31,408 INFO L226 Difference]: Without dead ends: 6185 [2020-10-12 21:00:31,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:00:31,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2020-10-12 21:00:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 5906. [2020-10-12 21:00:31,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5906 states. [2020-10-12 21:00:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 9607 transitions. [2020-10-12 21:00:31,561 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 9607 transitions. Word has length 144 [2020-10-12 21:00:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:31,562 INFO L479 AbstractCegarLoop]: Abstraction has 5906 states and 9607 transitions. [2020-10-12 21:00:31,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:00:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 9607 transitions. [2020-10-12 21:00:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 21:00:31,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:31,569 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-12 21:00:31,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 21:00:31,569 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:31,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1097346452, now seen corresponding path program 1 times [2020-10-12 21:00:31,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:31,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545976705] [2020-10-12 21:00:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:32,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:34,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:34,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 21:00:34,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:00:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2541 [2020-10-12 21:00:34,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 21:00:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 21:00:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:34,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:34,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:00:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:00:34,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545976705] [2020-10-12 21:00:34,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:34,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 21:00:34,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106180462] [2020-10-12 21:00:34,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:00:34,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:34,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:00:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:00:34,842 INFO L87 Difference]: Start difference. First operand 5906 states and 9607 transitions. Second operand 10 states. [2020-10-12 21:00:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:39,246 INFO L93 Difference]: Finished difference Result 11219 states and 18130 transitions. [2020-10-12 21:00:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:00:39,247 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 145 [2020-10-12 21:00:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:39,256 INFO L225 Difference]: With dead ends: 11219 [2020-10-12 21:00:39,256 INFO L226 Difference]: Without dead ends: 6450 [2020-10-12 21:00:39,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-12 21:00:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6450 states. [2020-10-12 21:00:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6450 to 5892. [2020-10-12 21:00:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5892 states. [2020-10-12 21:00:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 9581 transitions. [2020-10-12 21:00:39,425 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 9581 transitions. Word has length 145 [2020-10-12 21:00:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:39,425 INFO L479 AbstractCegarLoop]: Abstraction has 5892 states and 9581 transitions. [2020-10-12 21:00:39,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:00:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 9581 transitions. [2020-10-12 21:00:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 21:00:39,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:39,433 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 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 21:00:39,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 21:00:39,433 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:39,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:39,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1626621587, now seen corresponding path program 1 times [2020-10-12 21:00:39,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:39,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461388028] [2020-10-12 21:00:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:44,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 21:00:44,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-12 21:00:44,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 21:00:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-12 21:00:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:44,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:44,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:44,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 21:00:44,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461388028] [2020-10-12 21:00:44,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:44,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 21:00:44,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339326153] [2020-10-12 21:00:44,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:00:44,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:44,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:00:44,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:00:44,766 INFO L87 Difference]: Start difference. First operand 5892 states and 9581 transitions. Second operand 10 states.