/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.06.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:52:47,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:52:47,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:52:47,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:52:47,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:52:47,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:52:47,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:52:47,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:52:47,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:52:47,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:52:47,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:52:47,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:52:47,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:52:47,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:52:47,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:52:47,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:52:47,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:52:47,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:52:47,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:52:47,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:52:47,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:52:47,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:52:47,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:52:47,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:52:47,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:52:47,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:52:47,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:52:47,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:52:47,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:52:47,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:52:47,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:52:47,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:52:47,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:52:47,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:52:47,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:52:47,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:52:47,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:52:47,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:52:47,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:52:47,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:52:47,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:52:47,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:52:47,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:52:47,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:52:47,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:52:47,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:52:47,232 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:52:47,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:52:47,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:52:47,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:52:47,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:52:47,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:52:47,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:52:47,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:52:47,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:52:47,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:52:47,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:52:47,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:52:47,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:52:47,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:52:47,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:52:47,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:52:47,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:52:47,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:52:47,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:52:47,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:52:47,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:52:47,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:52:47,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:52:47,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:52:47,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:52:47,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:52:47,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:52:47,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:52:47,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:52:47,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:52:47,622 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:52:47,623 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.06.i.cil-1.c [2020-10-12 20:52:47,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de6890f21/4dd3f32edc484b4db9e6fdd06ae08d71/FLAG41130a072 [2020-10-12 20:52:48,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:52:48,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.06.i.cil-1.c [2020-10-12 20:52:48,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de6890f21/4dd3f32edc484b4db9e6fdd06ae08d71/FLAG41130a072 [2020-10-12 20:52:48,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de6890f21/4dd3f32edc484b4db9e6fdd06ae08d71 [2020-10-12 20:52:48,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:52:48,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:52:48,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:52:48,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:52:48,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:52:48,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:52:48" (1/1) ... [2020-10-12 20:52:48,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5dbf94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:48, skipping insertion in model container [2020-10-12 20:52:48,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:52:48" (1/1) ... [2020-10-12 20:52:48,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:52:48,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:52:49,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:52:49,235 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:52:49,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:52:49,399 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:52:49,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49 WrapperNode [2020-10-12 20:52:49,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:52:49,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:52:49,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:52:49,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:52:49,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (1/1) ... [2020-10-12 20:52:49,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (1/1) ... [2020-10-12 20:52:49,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (1/1) ... [2020-10-12 20:52:49,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (1/1) ... [2020-10-12 20:52:49,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (1/1) ... [2020-10-12 20:52:49,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (1/1) ... [2020-10-12 20:52:49,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (1/1) ... [2020-10-12 20:52:49,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:52:49,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:52:49,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:52:49,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:52:49,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:52:49,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:52:49,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:52:49,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:52:49,624 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:52:49,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:52:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:52:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:52:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:52:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:52:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:52:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:52:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:52:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:52:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:52:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:52:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:52:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:52:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:52:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:52:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:52:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:52:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:52:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:52:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:52:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:52:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:52:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:52:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:52:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:52:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:52:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:52:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:52:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:52:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:52:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:52:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:52:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:52:50,074 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:52:50,695 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:52:50,695 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:52:50,718 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:52:50,718 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:52:50,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:52:50 BoogieIcfgContainer [2020-10-12 20:52:50,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:52:50,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:52:50,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:52:50,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:52:50,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:52:48" (1/3) ... [2020-10-12 20:52:50,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddd2673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:52:50, skipping insertion in model container [2020-10-12 20:52:50,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:52:49" (2/3) ... [2020-10-12 20:52:50,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddd2673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:52:50, skipping insertion in model container [2020-10-12 20:52:50,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:52:50" (3/3) ... [2020-10-12 20:52:50,731 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-1.c [2020-10-12 20:52:50,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:52:50,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:52:50,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:52:50,789 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:52:50,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:52:50,789 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:52:50,790 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:52:50,790 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:52:50,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:52:50,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:52:50,790 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:52:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-10-12 20:52:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 20:52:50,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:50,825 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 20:52:50,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:50,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:50,831 INFO L82 PathProgramCache]: Analyzing trace with hash -603940065, now seen corresponding path program 1 times [2020-10-12 20:52:50,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:50,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220114885] [2020-10-12 20:52:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:52,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 20:52:52,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:52:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-12 20:52:52,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:52:52,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:52:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:52,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:52,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:52,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:52:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:52,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220114885] [2020-10-12 20:52:52,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:52,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:52,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206823357] [2020-10-12 20:52:52,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:52,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:52,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:52,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:52,481 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 5 states. [2020-10-12 20:52:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:53,648 INFO L93 Difference]: Finished difference Result 437 states and 746 transitions. [2020-10-12 20:52:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:53,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-12 20:52:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:53,665 INFO L225 Difference]: With dead ends: 437 [2020-10-12 20:52:53,666 INFO L226 Difference]: Without dead ends: 257 [2020-10-12 20:52:53,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:53,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-12 20:52:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 183. [2020-10-12 20:52:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-12 20:52:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 294 transitions. [2020-10-12 20:52:53,731 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 294 transitions. Word has length 50 [2020-10-12 20:52:53,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:53,731 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 294 transitions. [2020-10-12 20:52:53,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 294 transitions. [2020-10-12 20:52:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 20:52:53,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:53,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:53,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:52:53,735 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:53,736 INFO L82 PathProgramCache]: Analyzing trace with hash -512917115, now seen corresponding path program 1 times [2020-10-12 20:52:53,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:53,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008755320] [2020-10-12 20:52:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:54,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 20:52:54,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:52:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-12 20:52:54,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:52:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:54,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:54,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:52:54,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:54,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008755320] [2020-10-12 20:52:54,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:54,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:54,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459181566] [2020-10-12 20:52:54,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:54,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:54,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:54,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:54,422 INFO L87 Difference]: Start difference. First operand 183 states and 294 transitions. Second operand 5 states. [2020-10-12 20:52:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:55,526 INFO L93 Difference]: Finished difference Result 386 states and 605 transitions. [2020-10-12 20:52:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:55,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-12 20:52:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:55,535 INFO L225 Difference]: With dead ends: 386 [2020-10-12 20:52:55,535 INFO L226 Difference]: Without dead ends: 248 [2020-10-12 20:52:55,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-12 20:52:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 184. [2020-10-12 20:52:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-12 20:52:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 295 transitions. [2020-10-12 20:52:55,581 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 295 transitions. Word has length 51 [2020-10-12 20:52:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:55,582 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 295 transitions. [2020-10-12 20:52:55,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 295 transitions. [2020-10-12 20:52:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:52:55,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:55,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:55,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:52:55,600 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1878512674, now seen corresponding path program 1 times [2020-10-12 20:52:55,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:55,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796918737] [2020-10-12 20:52:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:55,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:57,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:57,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:52:57,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1487 [2020-10-12 20:52:57,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:52:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:57,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:57,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:57,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:57,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:52:57,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:57,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:57,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796918737] [2020-10-12 20:52:57,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:57,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:57,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837828853] [2020-10-12 20:52:57,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:57,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:57,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:57,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:57,265 INFO L87 Difference]: Start difference. First operand 184 states and 295 transitions. Second operand 5 states. [2020-10-12 20:52:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:58,245 INFO L93 Difference]: Finished difference Result 386 states and 604 transitions. [2020-10-12 20:52:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:58,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-12 20:52:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:58,248 INFO L225 Difference]: With dead ends: 386 [2020-10-12 20:52:58,249 INFO L226 Difference]: Without dead ends: 248 [2020-10-12 20:52:58,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:58,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-12 20:52:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 184. [2020-10-12 20:52:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-12 20:52:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 294 transitions. [2020-10-12 20:52:58,320 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 294 transitions. Word has length 63 [2020-10-12 20:52:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:58,321 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 294 transitions. [2020-10-12 20:52:58,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 294 transitions. [2020-10-12 20:52:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:52:58,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:58,325 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 20:52:58,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:52:58,325 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:58,325 INFO L82 PathProgramCache]: Analyzing trace with hash -287602074, now seen corresponding path program 1 times [2020-10-12 20:52:58,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:58,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130612937] [2020-10-12 20:52:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:03,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:03,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:53:03,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:03,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:53:03,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:03,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:03,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:53:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:53:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:03,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:03,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:03,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:03,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:03,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130612937] [2020-10-12 20:53:03,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:03,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:03,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3268063] [2020-10-12 20:53:03,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:03,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:03,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:03,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:03,517 INFO L87 Difference]: Start difference. First operand 184 states and 294 transitions. Second operand 5 states. [2020-10-12 20:53:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:04,416 INFO L93 Difference]: Finished difference Result 386 states and 603 transitions. [2020-10-12 20:53:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:04,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:53:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:04,419 INFO L225 Difference]: With dead ends: 386 [2020-10-12 20:53:04,419 INFO L226 Difference]: Without dead ends: 248 [2020-10-12 20:53:04,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-12 20:53:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 194. [2020-10-12 20:53:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-12 20:53:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 306 transitions. [2020-10-12 20:53:04,433 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 306 transitions. Word has length 64 [2020-10-12 20:53:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:04,435 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 306 transitions. [2020-10-12 20:53:04,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 306 transitions. [2020-10-12 20:53:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:53:04,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:04,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:04,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:53:04,438 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:04,438 INFO L82 PathProgramCache]: Analyzing trace with hash 649030781, now seen corresponding path program 1 times [2020-10-12 20:53:04,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:04,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159388547] [2020-10-12 20:53:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:05,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:05,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:53:05,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-12 20:53:05,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:05,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:05,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:05,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:05,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:05,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:05,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159388547] [2020-10-12 20:53:05,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:05,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:05,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024662899] [2020-10-12 20:53:05,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:05,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:05,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:05,722 INFO L87 Difference]: Start difference. First operand 194 states and 306 transitions. Second operand 5 states. [2020-10-12 20:53:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:06,579 INFO L93 Difference]: Finished difference Result 384 states and 600 transitions. [2020-10-12 20:53:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:06,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:53:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:06,582 INFO L225 Difference]: With dead ends: 384 [2020-10-12 20:53:06,582 INFO L226 Difference]: Without dead ends: 246 [2020-10-12 20:53:06,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-12 20:53:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 194. [2020-10-12 20:53:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-12 20:53:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 305 transitions. [2020-10-12 20:53:06,592 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 305 transitions. Word has length 64 [2020-10-12 20:53:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:06,593 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 305 transitions. [2020-10-12 20:53:06,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 305 transitions. [2020-10-12 20:53:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:53:06,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:06,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:06,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:53:06,594 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1551576484, now seen corresponding path program 1 times [2020-10-12 20:53:06,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:06,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916717515] [2020-10-12 20:53:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:06,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:06,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:53:06,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:53:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-12 20:53:06,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:53:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:07,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:07,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:07,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:07,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:07,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:07,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:07,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916717515] [2020-10-12 20:53:07,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:07,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:07,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460104154] [2020-10-12 20:53:07,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:07,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:07,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:07,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:07,046 INFO L87 Difference]: Start difference. First operand 194 states and 305 transitions. Second operand 5 states. [2020-10-12 20:53:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:08,009 INFO L93 Difference]: Finished difference Result 383 states and 598 transitions. [2020-10-12 20:53:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:08,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:53:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:08,011 INFO L225 Difference]: With dead ends: 383 [2020-10-12 20:53:08,011 INFO L226 Difference]: Without dead ends: 245 [2020-10-12 20:53:08,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:08,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-12 20:53:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 194. [2020-10-12 20:53:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-12 20:53:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 304 transitions. [2020-10-12 20:53:08,024 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 304 transitions. Word has length 64 [2020-10-12 20:53:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:08,024 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 304 transitions. [2020-10-12 20:53:08,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 304 transitions. [2020-10-12 20:53:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:53:08,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:08,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:08,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:53:08,026 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2139749201, now seen corresponding path program 1 times [2020-10-12 20:53:08,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:08,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640126645] [2020-10-12 20:53:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:13,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:13,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:53:13,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:13,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:53:13,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:53:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:13,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:53:13,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:13,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:13,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:13,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:13,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:13,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:13,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:13,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640126645] [2020-10-12 20:53:13,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:13,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:53:13,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137207141] [2020-10-12 20:53:13,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:53:13,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:13,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:53:13,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:53:13,265 INFO L87 Difference]: Start difference. First operand 194 states and 304 transitions. Second operand 8 states. [2020-10-12 20:53:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:14,802 INFO L93 Difference]: Finished difference Result 488 states and 764 transitions. [2020-10-12 20:53:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:53:14,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-12 20:53:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:14,809 INFO L225 Difference]: With dead ends: 488 [2020-10-12 20:53:14,811 INFO L226 Difference]: Without dead ends: 329 [2020-10-12 20:53:14,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:53:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-12 20:53:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 280. [2020-10-12 20:53:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-12 20:53:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 437 transitions. [2020-10-12 20:53:14,827 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 437 transitions. Word has length 65 [2020-10-12 20:53:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:14,828 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 437 transitions. [2020-10-12 20:53:14,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:53:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 437 transitions. [2020-10-12 20:53:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:53:14,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:14,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:14,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:53:14,830 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:14,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:14,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1395321639, now seen corresponding path program 1 times [2020-10-12 20:53:14,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:14,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818903254] [2020-10-12 20:53:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:15,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:15,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:53:15,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:53:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-12 20:53:15,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:53:15,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:15,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:15,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:15,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:15,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818903254] [2020-10-12 20:53:15,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:15,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:15,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261493211] [2020-10-12 20:53:15,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:15,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:15,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:15,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:15,182 INFO L87 Difference]: Start difference. First operand 280 states and 437 transitions. Second operand 5 states. [2020-10-12 20:53:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:16,144 INFO L93 Difference]: Finished difference Result 724 states and 1148 transitions. [2020-10-12 20:53:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:16,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-12 20:53:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:16,152 INFO L225 Difference]: With dead ends: 724 [2020-10-12 20:53:16,154 INFO L226 Difference]: Without dead ends: 479 [2020-10-12 20:53:16,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-12 20:53:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 358. [2020-10-12 20:53:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-12 20:53:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2020-10-12 20:53:16,178 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 67 [2020-10-12 20:53:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:16,178 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2020-10-12 20:53:16,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2020-10-12 20:53:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:53:16,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:16,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:16,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:53:16,186 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:16,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:16,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1334653565, now seen corresponding path program 1 times [2020-10-12 20:53:16,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:16,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985386981] [2020-10-12 20:53:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:16,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:16,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:53:16,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:53:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 20:53:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:53:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:16,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:16,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:16,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:16,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:16,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985386981] [2020-10-12 20:53:16,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:16,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:16,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412662655] [2020-10-12 20:53:16,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:16,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:16,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:16,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:16,498 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand 5 states. [2020-10-12 20:53:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:17,286 INFO L93 Difference]: Finished difference Result 687 states and 1103 transitions. [2020-10-12 20:53:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:17,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-12 20:53:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:17,289 INFO L225 Difference]: With dead ends: 687 [2020-10-12 20:53:17,289 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 20:53:17,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 20:53:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 324. [2020-10-12 20:53:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-12 20:53:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 513 transitions. [2020-10-12 20:53:17,302 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 513 transitions. Word has length 68 [2020-10-12 20:53:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:17,303 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 513 transitions. [2020-10-12 20:53:17,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 513 transitions. [2020-10-12 20:53:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:53:17,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:17,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:17,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:53:17,305 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:17,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:17,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1775842226, now seen corresponding path program 1 times [2020-10-12 20:53:17,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:17,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379184524] [2020-10-12 20:53:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:22,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:22,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:53:22,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:22,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:53:22,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:53:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:53:22,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:22,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:22,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:22,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:22,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:22,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379184524] [2020-10-12 20:53:22,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:22,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:53:22,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329150702] [2020-10-12 20:53:22,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:53:22,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:22,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:53:22,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:22,429 INFO L87 Difference]: Start difference. First operand 324 states and 513 transitions. Second operand 6 states. [2020-10-12 20:53:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:23,107 INFO L93 Difference]: Finished difference Result 531 states and 837 transitions. [2020-10-12 20:53:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:53:23,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-12 20:53:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:23,111 INFO L225 Difference]: With dead ends: 531 [2020-10-12 20:53:23,112 INFO L226 Difference]: Without dead ends: 341 [2020-10-12 20:53:23,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:53:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-12 20:53:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 331. [2020-10-12 20:53:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-12 20:53:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 521 transitions. [2020-10-12 20:53:23,124 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 521 transitions. Word has length 78 [2020-10-12 20:53:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:23,124 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 521 transitions. [2020-10-12 20:53:23,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:53:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 521 transitions. [2020-10-12 20:53:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:53:23,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:23,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:23,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:53:23,126 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash 198161722, now seen corresponding path program 1 times [2020-10-12 20:53:23,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:23,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217765516] [2020-10-12 20:53:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:28,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:53:28,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:53:28,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:53:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:28,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:28,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:28,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:28,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217765516] [2020-10-12 20:53:28,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:28,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:28,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870695692] [2020-10-12 20:53:28,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:28,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:28,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:28,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:28,245 INFO L87 Difference]: Start difference. First operand 331 states and 521 transitions. Second operand 5 states. [2020-10-12 20:53:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:28,893 INFO L93 Difference]: Finished difference Result 533 states and 837 transitions. [2020-10-12 20:53:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:28,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:53:28,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:28,897 INFO L225 Difference]: With dead ends: 533 [2020-10-12 20:53:28,897 INFO L226 Difference]: Without dead ends: 335 [2020-10-12 20:53:28,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-12 20:53:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-10-12 20:53:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-12 20:53:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 520 transitions. [2020-10-12 20:53:28,910 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 520 transitions. Word has length 78 [2020-10-12 20:53:28,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:28,910 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 520 transitions. [2020-10-12 20:53:28,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 520 transitions. [2020-10-12 20:53:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:53:28,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:28,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:28,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:53:28,912 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:28,913 INFO L82 PathProgramCache]: Analyzing trace with hash 751547387, now seen corresponding path program 1 times [2020-10-12 20:53:28,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:28,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946629487] [2020-10-12 20:53:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:53:33,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4144 [2020-10-12 20:53:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:53:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:33,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:33,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:33,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:33,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:33,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946629487] [2020-10-12 20:53:33,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:33,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:33,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034763767] [2020-10-12 20:53:33,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:33,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:33,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:33,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:33,158 INFO L87 Difference]: Start difference. First operand 331 states and 520 transitions. Second operand 5 states. [2020-10-12 20:53:33,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:33,975 INFO L93 Difference]: Finished difference Result 533 states and 836 transitions. [2020-10-12 20:53:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:33,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:53:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:33,979 INFO L225 Difference]: With dead ends: 533 [2020-10-12 20:53:33,979 INFO L226 Difference]: Without dead ends: 335 [2020-10-12 20:53:33,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:33,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-12 20:53:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-10-12 20:53:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-12 20:53:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 519 transitions. [2020-10-12 20:53:33,999 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 519 transitions. Word has length 79 [2020-10-12 20:53:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:34,000 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 519 transitions. [2020-10-12 20:53:34,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 519 transitions. [2020-10-12 20:53:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:53:34,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:34,002 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:34,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:53:34,002 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:34,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash 277330805, now seen corresponding path program 1 times [2020-10-12 20:53:34,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:34,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157128303] [2020-10-12 20:53:34,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:38,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:53:38,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4075 [2020-10-12 20:53:38,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:53:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:38,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:38,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:38,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:38,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:38,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:38,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:38,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157128303] [2020-10-12 20:53:38,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:38,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:38,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300628965] [2020-10-12 20:53:38,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:38,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:38,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:38,155 INFO L87 Difference]: Start difference. First operand 331 states and 519 transitions. Second operand 5 states. [2020-10-12 20:53:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:38,837 INFO L93 Difference]: Finished difference Result 533 states and 835 transitions. [2020-10-12 20:53:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:38,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:53:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:38,842 INFO L225 Difference]: With dead ends: 533 [2020-10-12 20:53:38,842 INFO L226 Difference]: Without dead ends: 335 [2020-10-12 20:53:38,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:38,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-12 20:53:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-10-12 20:53:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-12 20:53:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 518 transitions. [2020-10-12 20:53:38,858 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 518 transitions. Word has length 80 [2020-10-12 20:53:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:38,859 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 518 transitions. [2020-10-12 20:53:38,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 518 transitions. [2020-10-12 20:53:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:53:38,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:38,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:38,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:53:38,861 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:38,861 INFO L82 PathProgramCache]: Analyzing trace with hash -351393578, now seen corresponding path program 1 times [2020-10-12 20:53:38,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:38,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572077925] [2020-10-12 20:53:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:39,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:53:39,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-12 20:53:39,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:53:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:53:39,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:39,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:39,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:39,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:53:39,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:53:39,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572077925] [2020-10-12 20:53:39,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:39,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:39,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448056750] [2020-10-12 20:53:39,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:39,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:39,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:39,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:39,395 INFO L87 Difference]: Start difference. First operand 331 states and 518 transitions. Second operand 5 states. [2020-10-12 20:53:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:40,211 INFO L93 Difference]: Finished difference Result 582 states and 911 transitions. [2020-10-12 20:53:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:40,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:53:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:40,215 INFO L225 Difference]: With dead ends: 582 [2020-10-12 20:53:40,216 INFO L226 Difference]: Without dead ends: 413 [2020-10-12 20:53:40,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-12 20:53:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 363. [2020-10-12 20:53:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-12 20:53:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 576 transitions. [2020-10-12 20:53:40,230 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 576 transitions. Word has length 80 [2020-10-12 20:53:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:40,230 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 576 transitions. [2020-10-12 20:53:40,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 576 transitions. [2020-10-12 20:53:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:53:40,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:40,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:40,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:53:40,232 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:40,233 INFO L82 PathProgramCache]: Analyzing trace with hash -191550354, now seen corresponding path program 1 times [2020-10-12 20:53:40,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:40,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112478860] [2020-10-12 20:53:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:40,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:43,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:53:43,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:43,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3305 [2020-10-12 20:53:43,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:53:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:43,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:43,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:43,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:43,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:43,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:43,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:43,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112478860] [2020-10-12 20:53:43,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:43,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:43,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31032680] [2020-10-12 20:53:43,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:43,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:43,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:43,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:43,627 INFO L87 Difference]: Start difference. First operand 363 states and 576 transitions. Second operand 5 states. [2020-10-12 20:53:44,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:44,335 INFO L93 Difference]: Finished difference Result 612 states and 963 transitions. [2020-10-12 20:53:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:44,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:53:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:44,339 INFO L225 Difference]: With dead ends: 612 [2020-10-12 20:53:44,340 INFO L226 Difference]: Without dead ends: 401 [2020-10-12 20:53:44,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-12 20:53:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 372. [2020-10-12 20:53:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-12 20:53:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 585 transitions. [2020-10-12 20:53:44,355 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 585 transitions. Word has length 81 [2020-10-12 20:53:44,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:44,355 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 585 transitions. [2020-10-12 20:53:44,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 585 transitions. [2020-10-12 20:53:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:53:44,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:44,357 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 20:53:44,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:53:44,358 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:44,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1455524764, now seen corresponding path program 1 times [2020-10-12 20:53:44,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:44,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601360591] [2020-10-12 20:53:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:53:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:53:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 20:53:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:53:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:53:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:44,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:44,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:44,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:44,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:44,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:53:44,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601360591] [2020-10-12 20:53:44,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:44,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:44,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064489996] [2020-10-12 20:53:44,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:44,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:44,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:44,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:44,644 INFO L87 Difference]: Start difference. First operand 372 states and 585 transitions. Second operand 5 states. [2020-10-12 20:53:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:45,578 INFO L93 Difference]: Finished difference Result 928 states and 1472 transitions. [2020-10-12 20:53:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:45,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:53:45,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:45,581 INFO L225 Difference]: With dead ends: 928 [2020-10-12 20:53:45,581 INFO L226 Difference]: Without dead ends: 581 [2020-10-12 20:53:45,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-12 20:53:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 452. [2020-10-12 20:53:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-12 20:53:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 731 transitions. [2020-10-12 20:53:45,599 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 731 transitions. Word has length 81 [2020-10-12 20:53:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:45,599 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 731 transitions. [2020-10-12 20:53:45,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:45,599 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 731 transitions. [2020-10-12 20:53:45,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:53:45,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:45,601 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:45,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:53:45,602 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:45,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:45,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1142239008, now seen corresponding path program 1 times [2020-10-12 20:53:45,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:45,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341671123] [2020-10-12 20:53:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:45,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:53:45,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:53:45,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 20:53:45,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:45,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:53:45,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:53:45,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:45,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:45,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:45,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:45,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:45,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 20:53:45,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341671123] [2020-10-12 20:53:45,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:45,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:45,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503512804] [2020-10-12 20:53:45,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:45,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:45,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:45,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:45,850 INFO L87 Difference]: Start difference. First operand 452 states and 731 transitions. Second operand 5 states. [2020-10-12 20:53:46,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:46,758 INFO L93 Difference]: Finished difference Result 992 states and 1591 transitions. [2020-10-12 20:53:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:46,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:53:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:46,774 INFO L225 Difference]: With dead ends: 992 [2020-10-12 20:53:46,774 INFO L226 Difference]: Without dead ends: 565 [2020-10-12 20:53:46,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-12 20:53:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 452. [2020-10-12 20:53:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-12 20:53:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 731 transitions. [2020-10-12 20:53:46,798 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 731 transitions. Word has length 82 [2020-10-12 20:53:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:46,798 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 731 transitions. [2020-10-12 20:53:46,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 731 transitions. [2020-10-12 20:53:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:53:46,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:46,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:46,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:53:46,801 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:46,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:46,801 INFO L82 PathProgramCache]: Analyzing trace with hash 619942894, now seen corresponding path program 1 times [2020-10-12 20:53:46,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:46,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442991262] [2020-10-12 20:53:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:51,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:51,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:51,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:51,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:51,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:51,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:51,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442991262] [2020-10-12 20:53:51,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:51,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:51,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796528954] [2020-10-12 20:53:51,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:51,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:51,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:51,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:51,935 INFO L87 Difference]: Start difference. First operand 452 states and 731 transitions. Second operand 5 states. [2020-10-12 20:53:52,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:52,790 INFO L93 Difference]: Finished difference Result 924 states and 1492 transitions. [2020-10-12 20:53:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:52,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:53:52,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:52,795 INFO L225 Difference]: With dead ends: 924 [2020-10-12 20:53:52,796 INFO L226 Difference]: Without dead ends: 663 [2020-10-12 20:53:52,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:52,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-10-12 20:53:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 482. [2020-10-12 20:53:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-10-12 20:53:52,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 775 transitions. [2020-10-12 20:53:52,816 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 775 transitions. Word has length 82 [2020-10-12 20:53:52,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:52,816 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 775 transitions. [2020-10-12 20:53:52,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 775 transitions. [2020-10-12 20:53:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:53:52,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:52,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:52,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:53:52,818 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:52,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1062351803, now seen corresponding path program 1 times [2020-10-12 20:53:52,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:52,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603408661] [2020-10-12 20:53:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:52,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:57,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:53:57,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:53:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:53:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:53:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:53:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:58,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:58,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:58,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:58,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:58,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:58,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:53:58,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603408661] [2020-10-12 20:53:58,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:58,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:53:58,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445181623] [2020-10-12 20:53:58,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:53:58,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:58,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:53:58,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:53:58,064 INFO L87 Difference]: Start difference. First operand 482 states and 775 transitions. Second operand 9 states. [2020-10-12 20:53:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:59,713 INFO L93 Difference]: Finished difference Result 1008 states and 1612 transitions. [2020-10-12 20:53:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:53:59,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-12 20:53:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:59,717 INFO L225 Difference]: With dead ends: 1008 [2020-10-12 20:53:59,718 INFO L226 Difference]: Without dead ends: 742 [2020-10-12 20:53:59,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:53:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-12 20:53:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 491. [2020-10-12 20:53:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-12 20:53:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 786 transitions. [2020-10-12 20:53:59,737 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 786 transitions. Word has length 83 [2020-10-12 20:53:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:59,737 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 786 transitions. [2020-10-12 20:53:59,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:53:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 786 transitions. [2020-10-12 20:53:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:53:59,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:59,739 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 20:53:59,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:53:59,740 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:59,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1861439787, now seen corresponding path program 1 times [2020-10-12 20:53:59,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:59,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077163689] [2020-10-12 20:53:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:59,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:53:59,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 20:53:59,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:53:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:59,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:59,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:59,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:59,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:59,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077163689] [2020-10-12 20:53:59,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:59,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:59,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210574332] [2020-10-12 20:53:59,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:59,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:59,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:59,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:59,962 INFO L87 Difference]: Start difference. First operand 491 states and 786 transitions. Second operand 5 states. [2020-10-12 20:54:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:01,069 INFO L93 Difference]: Finished difference Result 1157 states and 1859 transitions. [2020-10-12 20:54:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:01,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:54:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:01,078 INFO L225 Difference]: With dead ends: 1157 [2020-10-12 20:54:01,078 INFO L226 Difference]: Without dead ends: 690 [2020-10-12 20:54:01,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-12 20:54:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 571. [2020-10-12 20:54:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-12 20:54:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 930 transitions. [2020-10-12 20:54:01,107 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 930 transitions. Word has length 89 [2020-10-12 20:54:01,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:01,107 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 930 transitions. [2020-10-12 20:54:01,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:01,107 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 930 transitions. [2020-10-12 20:54:01,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:54:01,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:01,109 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 20:54:01,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:54:01,110 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:01,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1613293293, now seen corresponding path program 1 times [2020-10-12 20:54:01,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:01,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439376809] [2020-10-12 20:54:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:01,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:01,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:01,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:54:01,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 20:54:01,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:54:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:01,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:01,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:01,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:01,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:01,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:01,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439376809] [2020-10-12 20:54:01,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:01,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:01,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028846889] [2020-10-12 20:54:01,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:01,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:01,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:01,443 INFO L87 Difference]: Start difference. First operand 571 states and 930 transitions. Second operand 5 states. [2020-10-12 20:54:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:02,233 INFO L93 Difference]: Finished difference Result 1214 states and 1978 transitions. [2020-10-12 20:54:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:02,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:54:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:02,237 INFO L225 Difference]: With dead ends: 1214 [2020-10-12 20:54:02,237 INFO L226 Difference]: Without dead ends: 667 [2020-10-12 20:54:02,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-10-12 20:54:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 619. [2020-10-12 20:54:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-12 20:54:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1012 transitions. [2020-10-12 20:54:02,259 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1012 transitions. Word has length 89 [2020-10-12 20:54:02,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:02,259 INFO L479 AbstractCegarLoop]: Abstraction has 619 states and 1012 transitions. [2020-10-12 20:54:02,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1012 transitions. [2020-10-12 20:54:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:54:02,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:02,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:02,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:54:02,262 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash -840702833, now seen corresponding path program 1 times [2020-10-12 20:54:02,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:02,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488081011] [2020-10-12 20:54:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:02,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:02,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:54:02,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 20:54:02,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:54:02,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:02,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:02,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:02,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:02,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:02,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:02,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:02,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488081011] [2020-10-12 20:54:02,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:02,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:02,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909622281] [2020-10-12 20:54:02,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:02,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:02,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:02,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:02,603 INFO L87 Difference]: Start difference. First operand 619 states and 1012 transitions. Second operand 5 states. [2020-10-12 20:54:03,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:03,670 INFO L93 Difference]: Finished difference Result 1317 states and 2140 transitions. [2020-10-12 20:54:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:03,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:54:03,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:03,676 INFO L225 Difference]: With dead ends: 1317 [2020-10-12 20:54:03,676 INFO L226 Difference]: Without dead ends: 722 [2020-10-12 20:54:03,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-10-12 20:54:03,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 539. [2020-10-12 20:54:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-10-12 20:54:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 868 transitions. [2020-10-12 20:54:03,694 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 868 transitions. Word has length 90 [2020-10-12 20:54:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:03,694 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 868 transitions. [2020-10-12 20:54:03,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:03,695 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 868 transitions. [2020-10-12 20:54:03,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:54:03,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:03,697 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:03,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:54:03,697 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1640662612, now seen corresponding path program 1 times [2020-10-12 20:54:03,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:03,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396328696] [2020-10-12 20:54:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:07,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:08,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:08,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:54:08,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:54:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:54:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:54:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:09,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:09,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:09,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:09,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:09,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:09,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:54:09,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396328696] [2020-10-12 20:54:09,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:09,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:54:09,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798554238] [2020-10-12 20:54:09,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:54:09,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:09,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:54:09,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:54:09,360 INFO L87 Difference]: Start difference. First operand 539 states and 868 transitions. Second operand 9 states. [2020-10-12 20:54:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:11,680 INFO L93 Difference]: Finished difference Result 1411 states and 2266 transitions. [2020-10-12 20:54:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:54:11,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-12 20:54:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:11,686 INFO L225 Difference]: With dead ends: 1411 [2020-10-12 20:54:11,686 INFO L226 Difference]: Without dead ends: 1121 [2020-10-12 20:54:11,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:54:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2020-10-12 20:54:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 613. [2020-10-12 20:54:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-12 20:54:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 990 transitions. [2020-10-12 20:54:11,716 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 990 transitions. Word has length 95 [2020-10-12 20:54:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:11,717 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 990 transitions. [2020-10-12 20:54:11,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:54:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 990 transitions. [2020-10-12 20:54:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:54:11,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:11,719 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:54:11,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:54:11,720 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:11,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1794312138, now seen corresponding path program 1 times [2020-10-12 20:54:11,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:11,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980553039] [2020-10-12 20:54:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:11,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:12,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:54:13,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-12 20:54:13,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:54:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:54:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:13,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:13,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:54:13,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980553039] [2020-10-12 20:54:13,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:13,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:13,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726431875] [2020-10-12 20:54:13,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:13,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:13,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:13,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:13,610 INFO L87 Difference]: Start difference. First operand 613 states and 990 transitions. Second operand 5 states. [2020-10-12 20:54:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:14,394 INFO L93 Difference]: Finished difference Result 1282 states and 2060 transitions. [2020-10-12 20:54:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:14,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:54:14,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:14,399 INFO L225 Difference]: With dead ends: 1282 [2020-10-12 20:54:14,399 INFO L226 Difference]: Without dead ends: 693 [2020-10-12 20:54:14,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-10-12 20:54:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 613. [2020-10-12 20:54:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-12 20:54:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 988 transitions. [2020-10-12 20:54:14,423 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 988 transitions. Word has length 102 [2020-10-12 20:54:14,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:14,423 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 988 transitions. [2020-10-12 20:54:14,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 988 transitions. [2020-10-12 20:54:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:54:14,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:14,427 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:14,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:54:14,427 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:14,428 INFO L82 PathProgramCache]: Analyzing trace with hash -397872663, now seen corresponding path program 1 times [2020-10-12 20:54:14,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:14,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762620843] [2020-10-12 20:54:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:15,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:15,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:54:15,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1479 [2020-10-12 20:54:15,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:54:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:54:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:15,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:15,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:15,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:15,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:15,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:15,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:54:15,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762620843] [2020-10-12 20:54:15,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:15,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:15,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001809369] [2020-10-12 20:54:15,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:15,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:15,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:15,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:15,985 INFO L87 Difference]: Start difference. First operand 613 states and 988 transitions. Second operand 5 states. [2020-10-12 20:54:16,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:16,786 INFO L93 Difference]: Finished difference Result 1272 states and 2042 transitions. [2020-10-12 20:54:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:16,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:54:16,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:16,789 INFO L225 Difference]: With dead ends: 1272 [2020-10-12 20:54:16,789 INFO L226 Difference]: Without dead ends: 683 [2020-10-12 20:54:16,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-12 20:54:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 613. [2020-10-12 20:54:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-12 20:54:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 986 transitions. [2020-10-12 20:54:16,810 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 986 transitions. Word has length 103 [2020-10-12 20:54:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:16,811 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 986 transitions. [2020-10-12 20:54:16,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 986 transitions. [2020-10-12 20:54:16,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:54:16,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:16,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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 20:54:16,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:54:16,813 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1051067716, now seen corresponding path program 1 times [2020-10-12 20:54:16,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:16,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763321380] [2020-10-12 20:54:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:16,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:17,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:54:17,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-12 20:54:17,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:54:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:54:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:18,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:18,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 20:54:18,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763321380] [2020-10-12 20:54:18,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:18,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:18,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765504699] [2020-10-12 20:54:18,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:18,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:18,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:18,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:18,055 INFO L87 Difference]: Start difference. First operand 613 states and 986 transitions. Second operand 5 states. [2020-10-12 20:54:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:19,039 INFO L93 Difference]: Finished difference Result 1423 states and 2294 transitions. [2020-10-12 20:54:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:19,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:54:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:19,043 INFO L225 Difference]: With dead ends: 1423 [2020-10-12 20:54:19,044 INFO L226 Difference]: Without dead ends: 834 [2020-10-12 20:54:19,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-12 20:54:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 691. [2020-10-12 20:54:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 20:54:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1128 transitions. [2020-10-12 20:54:19,068 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1128 transitions. Word has length 103 [2020-10-12 20:54:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:19,068 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1128 transitions. [2020-10-12 20:54:19,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1128 transitions. [2020-10-12 20:54:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:54:19,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:19,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:19,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:54:19,070 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:19,071 INFO L82 PathProgramCache]: Analyzing trace with hash -747283456, now seen corresponding path program 1 times [2020-10-12 20:54:19,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:19,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069010791] [2020-10-12 20:54:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:19,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:20,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:54:20,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-12 20:54:20,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:54:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:20,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:20,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:20,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:54:20,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069010791] [2020-10-12 20:54:20,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:20,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:20,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064911411] [2020-10-12 20:54:20,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:20,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:20,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:20,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:20,266 INFO L87 Difference]: Start difference. First operand 691 states and 1128 transitions. Second operand 5 states. [2020-10-12 20:54:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:20,917 INFO L93 Difference]: Finished difference Result 1396 states and 2276 transitions. [2020-10-12 20:54:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:20,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:54:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:20,922 INFO L225 Difference]: With dead ends: 1396 [2020-10-12 20:54:20,922 INFO L226 Difference]: Without dead ends: 729 [2020-10-12 20:54:20,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-12 20:54:20,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 691. [2020-10-12 20:54:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 20:54:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1126 transitions. [2020-10-12 20:54:20,944 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1126 transitions. Word has length 104 [2020-10-12 20:54:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:20,944 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1126 transitions. [2020-10-12 20:54:20,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1126 transitions. [2020-10-12 20:54:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:54:20,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:20,946 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:20,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:54:20,946 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:20,947 INFO L82 PathProgramCache]: Analyzing trace with hash -826931574, now seen corresponding path program 1 times [2020-10-12 20:54:20,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:20,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711370458] [2020-10-12 20:54:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:22,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:54:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-12 20:54:22,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:54:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:54:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:22,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:22,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:22,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:22,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:22,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 20:54:22,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711370458] [2020-10-12 20:54:22,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:22,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:22,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229318818] [2020-10-12 20:54:22,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:22,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:22,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:22,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:22,425 INFO L87 Difference]: Start difference. First operand 691 states and 1126 transitions. Second operand 5 states. [2020-10-12 20:54:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:23,048 INFO L93 Difference]: Finished difference Result 1396 states and 2272 transitions. [2020-10-12 20:54:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:23,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:54:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:23,052 INFO L225 Difference]: With dead ends: 1396 [2020-10-12 20:54:23,052 INFO L226 Difference]: Without dead ends: 729 [2020-10-12 20:54:23,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:23,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-12 20:54:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 691. [2020-10-12 20:54:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 20:54:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1124 transitions. [2020-10-12 20:54:23,074 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1124 transitions. Word has length 105 [2020-10-12 20:54:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:23,074 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1124 transitions. [2020-10-12 20:54:23,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1124 transitions. [2020-10-12 20:54:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:54:23,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:23,076 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:23,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:54:23,077 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:23,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:23,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1164278656, now seen corresponding path program 1 times [2020-10-12 20:54:23,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:23,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935134170] [2020-10-12 20:54:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:28,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:54:28,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:54:28,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:54:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:28,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:28,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:28,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 20:54:28,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935134170] [2020-10-12 20:54:28,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:28,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:28,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352207171] [2020-10-12 20:54:28,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:28,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:28,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:28,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:28,177 INFO L87 Difference]: Start difference. First operand 691 states and 1124 transitions. Second operand 5 states. [2020-10-12 20:54:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:28,767 INFO L93 Difference]: Finished difference Result 1362 states and 2225 transitions. [2020-10-12 20:54:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:28,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:54:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:28,771 INFO L225 Difference]: With dead ends: 1362 [2020-10-12 20:54:28,771 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 20:54:28,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 20:54:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-12 20:54:28,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 20:54:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1123 transitions. [2020-10-12 20:54:28,793 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1123 transitions. Word has length 105 [2020-10-12 20:54:28,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:28,794 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1123 transitions. [2020-10-12 20:54:28,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1123 transitions. [2020-10-12 20:54:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:54:28,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:28,796 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:28,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:54:28,796 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:28,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:28,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1853451333, now seen corresponding path program 1 times [2020-10-12 20:54:28,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:28,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365242870] [2020-10-12 20:54:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:29,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:30,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 20:54:30,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-10-12 20:54:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 20:54:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:54:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:30,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:30,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:30,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365242870] [2020-10-12 20:54:30,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:30,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:30,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44769007] [2020-10-12 20:54:30,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:30,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:30,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:30,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:30,374 INFO L87 Difference]: Start difference. First operand 691 states and 1123 transitions. Second operand 5 states. [2020-10-12 20:54:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:31,237 INFO L93 Difference]: Finished difference Result 1492 states and 2427 transitions. [2020-10-12 20:54:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:31,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:54:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:31,241 INFO L225 Difference]: With dead ends: 1492 [2020-10-12 20:54:31,242 INFO L226 Difference]: Without dead ends: 825 [2020-10-12 20:54:31,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-10-12 20:54:31,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 751. [2020-10-12 20:54:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-12 20:54:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1229 transitions. [2020-10-12 20:54:31,267 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1229 transitions. Word has length 106 [2020-10-12 20:54:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:31,267 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 1229 transitions. [2020-10-12 20:54:31,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:31,268 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1229 transitions. [2020-10-12 20:54:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:54:31,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:31,269 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:31,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:54:31,270 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1287902960, now seen corresponding path program 1 times [2020-10-12 20:54:31,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:31,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892907501] [2020-10-12 20:54:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:31,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:36,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:54:36,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:54:36,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:54:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:54:36,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:36,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:36,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:36,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:36,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892907501] [2020-10-12 20:54:36,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:36,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:54:36,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513541934] [2020-10-12 20:54:36,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:54:36,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:54:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:54:36,439 INFO L87 Difference]: Start difference. First operand 751 states and 1229 transitions. Second operand 8 states. [2020-10-12 20:54:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:38,409 INFO L93 Difference]: Finished difference Result 2177 states and 3582 transitions. [2020-10-12 20:54:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:54:38,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-12 20:54:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:38,415 INFO L225 Difference]: With dead ends: 2177 [2020-10-12 20:54:38,415 INFO L226 Difference]: Without dead ends: 1450 [2020-10-12 20:54:38,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:54:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2020-10-12 20:54:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1074. [2020-10-12 20:54:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-12 20:54:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1775 transitions. [2020-10-12 20:54:38,447 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1775 transitions. Word has length 109 [2020-10-12 20:54:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:38,447 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1775 transitions. [2020-10-12 20:54:38,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:54:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1775 transitions. [2020-10-12 20:54:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:54:38,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:38,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:38,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:54:38,450 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:38,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1078791634, now seen corresponding path program 1 times [2020-10-12 20:54:38,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:38,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001473029] [2020-10-12 20:54:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:54:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1934 [2020-10-12 20:54:40,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 20:54:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:54:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:40,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:40,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:40,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:40,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:40,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:40,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001473029] [2020-10-12 20:54:40,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:40,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:40,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787236952] [2020-10-12 20:54:40,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:40,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:40,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:40,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:40,489 INFO L87 Difference]: Start difference. First operand 1074 states and 1775 transitions. Second operand 5 states. [2020-10-12 20:54:41,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:41,326 INFO L93 Difference]: Finished difference Result 2302 states and 3804 transitions. [2020-10-12 20:54:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:41,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:54:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:41,340 INFO L225 Difference]: With dead ends: 2302 [2020-10-12 20:54:41,341 INFO L226 Difference]: Without dead ends: 1253 [2020-10-12 20:54:41,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-10-12 20:54:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1158. [2020-10-12 20:54:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-10-12 20:54:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1922 transitions. [2020-10-12 20:54:41,384 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1922 transitions. Word has length 109 [2020-10-12 20:54:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:41,385 INFO L479 AbstractCegarLoop]: Abstraction has 1158 states and 1922 transitions. [2020-10-12 20:54:41,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1922 transitions. [2020-10-12 20:54:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:54:41,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:41,387 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:41,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:54:41,387 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash -656020099, now seen corresponding path program 1 times [2020-10-12 20:54:41,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:41,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611289277] [2020-10-12 20:54:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:42,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:42,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:42,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:54:42,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:42,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-10-12 20:54:42,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:54:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 20:54:42,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:43,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:43,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:54:43,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611289277] [2020-10-12 20:54:43,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:43,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:54:43,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401200908] [2020-10-12 20:54:43,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:54:43,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:43,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:54:43,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:54:43,181 INFO L87 Difference]: Start difference. First operand 1158 states and 1922 transitions. Second operand 10 states. [2020-10-12 20:54:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:46,241 INFO L93 Difference]: Finished difference Result 3039 states and 4997 transitions. [2020-10-12 20:54:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:54:46,242 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-10-12 20:54:46,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:46,251 INFO L225 Difference]: With dead ends: 3039 [2020-10-12 20:54:46,251 INFO L226 Difference]: Without dead ends: 1906 [2020-10-12 20:54:46,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:54:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-10-12 20:54:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1486. [2020-10-12 20:54:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-10-12 20:54:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2485 transitions. [2020-10-12 20:54:46,305 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2485 transitions. Word has length 110 [2020-10-12 20:54:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:46,305 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 2485 transitions. [2020-10-12 20:54:46,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:54:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2485 transitions. [2020-10-12 20:54:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:54:46,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:46,308 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:46,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:54:46,308 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2127398169, now seen corresponding path program 1 times [2020-10-12 20:54:46,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:46,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933267668] [2020-10-12 20:54:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:47,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:47,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:47,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:54:47,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1279 [2020-10-12 20:54:47,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:54:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 20:54:47,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:47,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:47,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:47,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:47,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:54:47,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933267668] [2020-10-12 20:54:47,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:47,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:54:47,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496513238] [2020-10-12 20:54:47,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:54:47,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:47,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:54:47,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:54:47,854 INFO L87 Difference]: Start difference. First operand 1486 states and 2485 transitions. Second operand 9 states. [2020-10-12 20:54:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:50,998 INFO L93 Difference]: Finished difference Result 3402 states and 5649 transitions. [2020-10-12 20:54:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:54:51,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-10-12 20:54:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:51,011 INFO L225 Difference]: With dead ends: 3402 [2020-10-12 20:54:51,011 INFO L226 Difference]: Without dead ends: 1941 [2020-10-12 20:54:51,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:54:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2020-10-12 20:54:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1486. [2020-10-12 20:54:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-10-12 20:54:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2485 transitions. [2020-10-12 20:54:51,051 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2485 transitions. Word has length 111 [2020-10-12 20:54:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:51,052 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 2485 transitions. [2020-10-12 20:54:51,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:54:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2485 transitions. [2020-10-12 20:54:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:54:51,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:51,054 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:51,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:54:51,055 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:51,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1695157649, now seen corresponding path program 1 times [2020-10-12 20:54:51,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:51,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480791879] [2020-10-12 20:54:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:51,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:54:51,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-12 20:54:51,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:54:51,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:51,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:51,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:51,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:54:51,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480791879] [2020-10-12 20:54:51,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:51,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:51,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286971015] [2020-10-12 20:54:51,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:51,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:51,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:51,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:51,770 INFO L87 Difference]: Start difference. First operand 1486 states and 2485 transitions. Second operand 5 states. [2020-10-12 20:54:52,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:52,813 INFO L93 Difference]: Finished difference Result 3323 states and 5539 transitions. [2020-10-12 20:54:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:52,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:54:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:52,821 INFO L225 Difference]: With dead ends: 3323 [2020-10-12 20:54:52,821 INFO L226 Difference]: Without dead ends: 1862 [2020-10-12 20:54:52,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:52,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2020-10-12 20:54:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1586. [2020-10-12 20:54:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-10-12 20:54:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2653 transitions. [2020-10-12 20:54:52,869 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2653 transitions. Word has length 112 [2020-10-12 20:54:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:52,870 INFO L479 AbstractCegarLoop]: Abstraction has 1586 states and 2653 transitions. [2020-10-12 20:54:52,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2653 transitions. [2020-10-12 20:54:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:54:52,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:52,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:52,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:54:52,873 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:52,873 INFO L82 PathProgramCache]: Analyzing trace with hash 913629809, now seen corresponding path program 1 times [2020-10-12 20:54:52,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:52,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484551840] [2020-10-12 20:54:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:53,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:54:53,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-12 20:54:53,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:54:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:54:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:53,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:53,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:53,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:53,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:54:53,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484551840] [2020-10-12 20:54:53,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:53,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:53,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905377580] [2020-10-12 20:54:53,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:53,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:53,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:53,170 INFO L87 Difference]: Start difference. First operand 1586 states and 2653 transitions. Second operand 5 states. [2020-10-12 20:54:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:54,238 INFO L93 Difference]: Finished difference Result 3404 states and 5664 transitions. [2020-10-12 20:54:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:54,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:54:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:54,244 INFO L225 Difference]: With dead ends: 3404 [2020-10-12 20:54:54,244 INFO L226 Difference]: Without dead ends: 1843 [2020-10-12 20:54:54,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-10-12 20:54:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1469. [2020-10-12 20:54:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-10-12 20:54:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2440 transitions. [2020-10-12 20:54:54,281 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2440 transitions. Word has length 112 [2020-10-12 20:54:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:54,282 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 2440 transitions. [2020-10-12 20:54:54,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2440 transitions. [2020-10-12 20:54:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:54:54,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:54,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:54,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:54:54,285 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:54,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:54,285 INFO L82 PathProgramCache]: Analyzing trace with hash 39458852, now seen corresponding path program 1 times [2020-10-12 20:54:54,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:54,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086085211] [2020-10-12 20:54:54,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:59,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:54:59,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:54:59,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 20:54:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 20:54:59,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:59,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:59,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:59,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:59,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:59,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:59,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:59,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086085211] [2020-10-12 20:54:59,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:59,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:54:59,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995767582] [2020-10-12 20:54:59,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:54:59,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:59,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:54:59,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:54:59,446 INFO L87 Difference]: Start difference. First operand 1469 states and 2440 transitions. Second operand 8 states. [2020-10-12 20:55:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:01,092 INFO L93 Difference]: Finished difference Result 3098 states and 5102 transitions. [2020-10-12 20:55:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:55:01,093 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-12 20:55:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:01,097 INFO L225 Difference]: With dead ends: 3098 [2020-10-12 20:55:01,097 INFO L226 Difference]: Without dead ends: 1654 [2020-10-12 20:55:01,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:55:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2020-10-12 20:55:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1455. [2020-10-12 20:55:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1455 states. [2020-10-12 20:55:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2413 transitions. [2020-10-12 20:55:01,138 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2413 transitions. Word has length 113 [2020-10-12 20:55:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:01,139 INFO L479 AbstractCegarLoop]: Abstraction has 1455 states and 2413 transitions. [2020-10-12 20:55:01,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:55:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2413 transitions. [2020-10-12 20:55:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 20:55:01,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:01,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:01,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:55:01,141 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:01,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1549528877, now seen corresponding path program 1 times [2020-10-12 20:55:01,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:01,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100211201] [2020-10-12 20:55:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:01,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:01,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:55:01,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 20:55:01,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:55:01,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:01,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:01,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:01,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:01,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:01,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100211201] [2020-10-12 20:55:01,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:01,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:01,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146576538] [2020-10-12 20:55:01,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:01,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:01,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:01,465 INFO L87 Difference]: Start difference. First operand 1455 states and 2413 transitions. Second operand 5 states. [2020-10-12 20:55:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:02,514 INFO L93 Difference]: Finished difference Result 3149 states and 5207 transitions. [2020-10-12 20:55:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:02,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-12 20:55:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:02,518 INFO L225 Difference]: With dead ends: 3149 [2020-10-12 20:55:02,518 INFO L226 Difference]: Without dead ends: 1719 [2020-10-12 20:55:02,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:02,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-10-12 20:55:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1487. [2020-10-12 20:55:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-10-12 20:55:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2473 transitions. [2020-10-12 20:55:02,560 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2473 transitions. Word has length 118 [2020-10-12 20:55:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:02,560 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 2473 transitions. [2020-10-12 20:55:02,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2473 transitions. [2020-10-12 20:55:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:55:02,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:02,562 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:02,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:55:02,562 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:02,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2110535268, now seen corresponding path program 1 times [2020-10-12 20:55:02,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:02,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211618741] [2020-10-12 20:55:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:02,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:02,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:03,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:03,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:55:03,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-12 20:55:03,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:55:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:04,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:04,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:04,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211618741] [2020-10-12 20:55:04,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:04,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:04,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950388500] [2020-10-12 20:55:04,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:04,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:04,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:04,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:04,056 INFO L87 Difference]: Start difference. First operand 1487 states and 2473 transitions. Second operand 5 states. [2020-10-12 20:55:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:05,089 INFO L93 Difference]: Finished difference Result 3181 states and 5263 transitions. [2020-10-12 20:55:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:05,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:55:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:05,093 INFO L225 Difference]: With dead ends: 3181 [2020-10-12 20:55:05,093 INFO L226 Difference]: Without dead ends: 1719 [2020-10-12 20:55:05,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-10-12 20:55:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1491. [2020-10-12 20:55:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-10-12 20:55:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2477 transitions. [2020-10-12 20:55:05,145 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2477 transitions. Word has length 121 [2020-10-12 20:55:05,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:05,145 INFO L479 AbstractCegarLoop]: Abstraction has 1491 states and 2477 transitions. [2020-10-12 20:55:05,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2477 transitions. [2020-10-12 20:55:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:55:05,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:05,148 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:05,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:55:05,149 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash 907967387, now seen corresponding path program 1 times [2020-10-12 20:55:05,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:05,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991656634] [2020-10-12 20:55:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:05,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:06,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:55:06,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-10-12 20:55:06,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:55:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:06,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:06,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:06,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:06,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:06,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:06,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991656634] [2020-10-12 20:55:06,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:06,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:06,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299679913] [2020-10-12 20:55:06,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:06,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:06,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:06,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:06,224 INFO L87 Difference]: Start difference. First operand 1491 states and 2477 transitions. Second operand 5 states. [2020-10-12 20:55:07,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:07,220 INFO L93 Difference]: Finished difference Result 3185 states and 5263 transitions. [2020-10-12 20:55:07,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:07,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:55:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:07,224 INFO L225 Difference]: With dead ends: 3185 [2020-10-12 20:55:07,225 INFO L226 Difference]: Without dead ends: 1719 [2020-10-12 20:55:07,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:07,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-10-12 20:55:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1499. [2020-10-12 20:55:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2020-10-12 20:55:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2489 transitions. [2020-10-12 20:55:07,276 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2489 transitions. Word has length 122 [2020-10-12 20:55:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:07,276 INFO L479 AbstractCegarLoop]: Abstraction has 1499 states and 2489 transitions. [2020-10-12 20:55:07,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2489 transitions. [2020-10-12 20:55:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:55:07,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:07,279 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:07,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:55:07,280 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:07,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:07,280 INFO L82 PathProgramCache]: Analyzing trace with hash -300223114, now seen corresponding path program 1 times [2020-10-12 20:55:07,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:07,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036582177] [2020-10-12 20:55:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:08,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:55:08,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-12 20:55:08,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:55:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:08,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:08,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:08,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:08,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036582177] [2020-10-12 20:55:08,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:08,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:08,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526048667] [2020-10-12 20:55:08,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:08,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:08,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:08,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:08,664 INFO L87 Difference]: Start difference. First operand 1499 states and 2489 transitions. Second operand 5 states. [2020-10-12 20:55:09,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:09,653 INFO L93 Difference]: Finished difference Result 3169 states and 5235 transitions. [2020-10-12 20:55:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:09,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:55:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:09,664 INFO L225 Difference]: With dead ends: 3169 [2020-10-12 20:55:09,664 INFO L226 Difference]: Without dead ends: 1695 [2020-10-12 20:55:09,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2020-10-12 20:55:09,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1499. [2020-10-12 20:55:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2020-10-12 20:55:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2485 transitions. [2020-10-12 20:55:09,716 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2485 transitions. Word has length 122 [2020-10-12 20:55:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:09,716 INFO L479 AbstractCegarLoop]: Abstraction has 1499 states and 2485 transitions. [2020-10-12 20:55:09,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2485 transitions. [2020-10-12 20:55:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:55:09,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:09,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:09,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:55:09,720 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash 450799201, now seen corresponding path program 1 times [2020-10-12 20:55:09,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:09,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013153766] [2020-10-12 20:55:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:09,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:10,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:55:10,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-12 20:55:10,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:55:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:10,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:10,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:10,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:10,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:10,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:10,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013153766] [2020-10-12 20:55:10,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:10,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:10,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924457958] [2020-10-12 20:55:10,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:10,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:10,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:10,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:10,807 INFO L87 Difference]: Start difference. First operand 1499 states and 2485 transitions. Second operand 5 states. [2020-10-12 20:55:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:11,808 INFO L93 Difference]: Finished difference Result 3157 states and 5211 transitions. [2020-10-12 20:55:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:11,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:55:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:11,813 INFO L225 Difference]: With dead ends: 3157 [2020-10-12 20:55:11,813 INFO L226 Difference]: Without dead ends: 1683 [2020-10-12 20:55:11,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-10-12 20:55:11,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1503. [2020-10-12 20:55:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2020-10-12 20:55:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2489 transitions. [2020-10-12 20:55:11,865 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2489 transitions. Word has length 123 [2020-10-12 20:55:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:11,866 INFO L479 AbstractCegarLoop]: Abstraction has 1503 states and 2489 transitions. [2020-10-12 20:55:11,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2489 transitions. [2020-10-12 20:55:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:55:11,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:11,869 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:11,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:55:11,869 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash -547960864, now seen corresponding path program 1 times [2020-10-12 20:55:11,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:11,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263547045] [2020-10-12 20:55:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:55:16,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:55:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:55:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 20:55:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:17,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:17,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:17,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:17,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:17,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:17,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:17,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:17,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:17,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:55:17,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263547045] [2020-10-12 20:55:17,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:17,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:55:17,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908968490] [2020-10-12 20:55:17,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:55:17,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:17,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:55:17,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:55:17,148 INFO L87 Difference]: Start difference. First operand 1503 states and 2489 transitions. Second operand 10 states. [2020-10-12 20:55:19,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:19,566 INFO L93 Difference]: Finished difference Result 3395 states and 5620 transitions. [2020-10-12 20:55:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:55:19,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-12 20:55:19,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:19,573 INFO L225 Difference]: With dead ends: 3395 [2020-10-12 20:55:19,573 INFO L226 Difference]: Without dead ends: 1917 [2020-10-12 20:55:19,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:55:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-10-12 20:55:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1833. [2020-10-12 20:55:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-10-12 20:55:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 3050 transitions. [2020-10-12 20:55:19,640 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 3050 transitions. Word has length 124 [2020-10-12 20:55:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:19,641 INFO L479 AbstractCegarLoop]: Abstraction has 1833 states and 3050 transitions. [2020-10-12 20:55:19,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:55:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 3050 transitions. [2020-10-12 20:55:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:55:19,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:19,645 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:19,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:55:19,646 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:19,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1033527364, now seen corresponding path program 1 times [2020-10-12 20:55:19,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:19,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976478624] [2020-10-12 20:55:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:19,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:24,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:55:24,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:55:24,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:55:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:55:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:24,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:24,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:24,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:24,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:24,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:24,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 56 proven. 38 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:55:24,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976478624] [2020-10-12 20:55:24,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:24,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:24,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127952003] [2020-10-12 20:55:24,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:24,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:24,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:24,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:24,889 INFO L87 Difference]: Start difference. First operand 1833 states and 3050 transitions. Second operand 9 states. [2020-10-12 20:55:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:27,234 INFO L93 Difference]: Finished difference Result 3028 states and 4996 transitions. [2020-10-12 20:55:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:55:27,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-12 20:55:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:27,237 INFO L225 Difference]: With dead ends: 3028 [2020-10-12 20:55:27,237 INFO L226 Difference]: Without dead ends: 1912 [2020-10-12 20:55:27,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:55:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-10-12 20:55:27,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1833. [2020-10-12 20:55:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-10-12 20:55:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 3049 transitions. [2020-10-12 20:55:27,295 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 3049 transitions. Word has length 124 [2020-10-12 20:55:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:27,295 INFO L479 AbstractCegarLoop]: Abstraction has 1833 states and 3049 transitions. [2020-10-12 20:55:27,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 3049 transitions. [2020-10-12 20:55:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:55:27,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:27,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:27,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:55:27,299 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:27,300 INFO L82 PathProgramCache]: Analyzing trace with hash -983931741, now seen corresponding path program 1 times [2020-10-12 20:55:27,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:27,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711076227] [2020-10-12 20:55:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:27,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:55:27,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:27,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-12 20:55:27,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:55:27,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:27,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:27,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:27,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:27,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:27,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711076227] [2020-10-12 20:55:27,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:27,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:27,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730421033] [2020-10-12 20:55:27,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:27,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:27,782 INFO L87 Difference]: Start difference. First operand 1833 states and 3049 transitions. Second operand 5 states. [2020-10-12 20:55:28,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:28,818 INFO L93 Difference]: Finished difference Result 3848 states and 6372 transitions. [2020-10-12 20:55:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:28,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:55:28,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:28,821 INFO L225 Difference]: With dead ends: 3848 [2020-10-12 20:55:28,822 INFO L226 Difference]: Without dead ends: 2040 [2020-10-12 20:55:28,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-10-12 20:55:28,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1838. [2020-10-12 20:55:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-10-12 20:55:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 3054 transitions. [2020-10-12 20:55:28,885 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 3054 transitions. Word has length 124 [2020-10-12 20:55:28,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:28,885 INFO L479 AbstractCegarLoop]: Abstraction has 1838 states and 3054 transitions. [2020-10-12 20:55:28,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 3054 transitions. [2020-10-12 20:55:28,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:28,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:28,889 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, 1] [2020-10-12 20:55:28,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:55:28,889 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:28,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:28,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1810390166, now seen corresponding path program 1 times [2020-10-12 20:55:28,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:28,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306045128] [2020-10-12 20:55:28,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:28,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3511 [2020-10-12 20:55:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:55:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:32,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:32,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:32,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:32,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:32,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:32,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 20:55:32,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306045128] [2020-10-12 20:55:32,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:32,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:32,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7922668] [2020-10-12 20:55:32,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:32,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:32,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:32,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:32,525 INFO L87 Difference]: Start difference. First operand 1838 states and 3054 transitions. Second operand 5 states. [2020-10-12 20:55:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:33,355 INFO L93 Difference]: Finished difference Result 5433 states and 9030 transitions. [2020-10-12 20:55:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:33,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 20:55:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:33,360 INFO L225 Difference]: With dead ends: 5433 [2020-10-12 20:55:33,360 INFO L226 Difference]: Without dead ends: 3620 [2020-10-12 20:55:33,363 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 20:55:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2020-10-12 20:55:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3618. [2020-10-12 20:55:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3618 states. [2020-10-12 20:55:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5950 transitions. [2020-10-12 20:55:33,446 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5950 transitions. Word has length 125 [2020-10-12 20:55:33,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:33,446 INFO L479 AbstractCegarLoop]: Abstraction has 3618 states and 5950 transitions. [2020-10-12 20:55:33,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5950 transitions. [2020-10-12 20:55:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:33,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:33,451 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, 1] [2020-10-12 20:55:33,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:55:33,451 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:33,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:33,452 INFO L82 PathProgramCache]: Analyzing trace with hash 607513900, now seen corresponding path program 1 times [2020-10-12 20:55:33,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:33,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141488212] [2020-10-12 20:55:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:36,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:36,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2967 [2020-10-12 20:55:36,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 20:55:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:55:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:36,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:36,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:36,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:36,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-12 20:55:36,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141488212] [2020-10-12 20:55:36,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:36,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:36,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183740412] [2020-10-12 20:55:36,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:36,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:36,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:36,539 INFO L87 Difference]: Start difference. First operand 3618 states and 5950 transitions. Second operand 5 states. [2020-10-12 20:55:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:37,861 INFO L93 Difference]: Finished difference Result 8471 states and 13943 transitions. [2020-10-12 20:55:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:37,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 20:55:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:37,868 INFO L225 Difference]: With dead ends: 8471 [2020-10-12 20:55:37,868 INFO L226 Difference]: Without dead ends: 4894 [2020-10-12 20:55:37,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2020-10-12 20:55:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 3904. [2020-10-12 20:55:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3904 states. [2020-10-12 20:55:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 6384 transitions. [2020-10-12 20:55:37,964 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 6384 transitions. Word has length 125 [2020-10-12 20:55:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:37,964 INFO L479 AbstractCegarLoop]: Abstraction has 3904 states and 6384 transitions. [2020-10-12 20:55:37,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 6384 transitions. [2020-10-12 20:55:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:37,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:37,969 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:37,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:55:37,969 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:37,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:37,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1316802889, now seen corresponding path program 1 times [2020-10-12 20:55:37,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:37,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813000182] [2020-10-12 20:55:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:38,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:38,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:38,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-12 20:55:38,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:38,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:55:38,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:38,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:38,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:38,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:38,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813000182] [2020-10-12 20:55:38,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:38,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:38,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515105686] [2020-10-12 20:55:38,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:38,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:38,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:38,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:38,420 INFO L87 Difference]: Start difference. First operand 3904 states and 6384 transitions. Second operand 5 states. [2020-10-12 20:55:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:39,611 INFO L93 Difference]: Finished difference Result 8141 states and 13264 transitions. [2020-10-12 20:55:39,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:39,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 20:55:39,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:39,618 INFO L225 Difference]: With dead ends: 8141 [2020-10-12 20:55:39,618 INFO L226 Difference]: Without dead ends: 4278 [2020-10-12 20:55:39,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4278 states. [2020-10-12 20:55:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4278 to 3878. [2020-10-12 20:55:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3878 states. [2020-10-12 20:55:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6350 transitions. [2020-10-12 20:55:39,751 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6350 transitions. Word has length 125 [2020-10-12 20:55:39,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:39,751 INFO L479 AbstractCegarLoop]: Abstraction has 3878 states and 6350 transitions. [2020-10-12 20:55:39,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6350 transitions. [2020-10-12 20:55:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:55:39,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:39,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:39,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:55:39,756 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:39,757 INFO L82 PathProgramCache]: Analyzing trace with hash -650776383, now seen corresponding path program 1 times [2020-10-12 20:55:39,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:39,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549570228] [2020-10-12 20:55:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:41,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:44,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:55:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:55:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:55:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:55:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:44,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:44,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:44,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:44,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:44,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 20:55:44,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549570228] [2020-10-12 20:55:44,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:44,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:44,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930337979] [2020-10-12 20:55:44,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:44,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:44,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:44,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:44,981 INFO L87 Difference]: Start difference. First operand 3878 states and 6350 transitions. Second operand 9 states. [2020-10-12 20:55:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:47,112 INFO L93 Difference]: Finished difference Result 6696 states and 10886 transitions. [2020-10-12 20:55:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:55:47,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 126 [2020-10-12 20:55:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:47,118 INFO L225 Difference]: With dead ends: 6696 [2020-10-12 20:55:47,118 INFO L226 Difference]: Without dead ends: 4341 [2020-10-12 20:55:47,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:55:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2020-10-12 20:55:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3927. [2020-10-12 20:55:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3927 states. [2020-10-12 20:55:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 6435 transitions. [2020-10-12 20:55:47,220 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 6435 transitions. Word has length 126 [2020-10-12 20:55:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:47,220 INFO L479 AbstractCegarLoop]: Abstraction has 3927 states and 6435 transitions. [2020-10-12 20:55:47,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:55:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 6435 transitions. [2020-10-12 20:55:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:55:47,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:47,226 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:47,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:55:47,226 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:47,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:47,226 INFO L82 PathProgramCache]: Analyzing trace with hash -496230775, now seen corresponding path program 1 times [2020-10-12 20:55:47,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:47,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229347570] [2020-10-12 20:55:47,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:47,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:55:47,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 20:55:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:55:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:55:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:47,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:47,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:47,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:47,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:47,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:47,573 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 20:55:47,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229347570] [2020-10-12 20:55:47,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:47,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:47,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633205944] [2020-10-12 20:55:47,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:47,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:47,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:47,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:47,574 INFO L87 Difference]: Start difference. First operand 3927 states and 6435 transitions. Second operand 5 states. [2020-10-12 20:55:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:48,855 INFO L93 Difference]: Finished difference Result 4983 states and 8127 transitions. [2020-10-12 20:55:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:48,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-12 20:55:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:48,861 INFO L225 Difference]: With dead ends: 4983 [2020-10-12 20:55:48,861 INFO L226 Difference]: Without dead ends: 4148 [2020-10-12 20:55:48,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2020-10-12 20:55:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4004. [2020-10-12 20:55:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4004 states. [2020-10-12 20:55:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 6574 transitions. [2020-10-12 20:55:48,968 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 6574 transitions. Word has length 130 [2020-10-12 20:55:48,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:48,969 INFO L479 AbstractCegarLoop]: Abstraction has 4004 states and 6574 transitions. [2020-10-12 20:55:48,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:48,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 6574 transitions. [2020-10-12 20:55:48,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 20:55:48,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:48,974 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, 1] [2020-10-12 20:55:48,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:55:48,974 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:48,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:48,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1468896421, now seen corresponding path program 1 times [2020-10-12 20:55:48,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:48,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531704402] [2020-10-12 20:55:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:49,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 20:55:49,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-12 20:55:49,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:55:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:55:49,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:55:49,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531704402] [2020-10-12 20:55:49,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:49,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:49,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478956897] [2020-10-12 20:55:49,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:49,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:49,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:49,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:49,407 INFO L87 Difference]: Start difference. First operand 4004 states and 6574 transitions. Second operand 5 states. [2020-10-12 20:55:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:50,622 INFO L93 Difference]: Finished difference Result 5044 states and 8239 transitions. [2020-10-12 20:55:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:50,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-12 20:55:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:50,628 INFO L225 Difference]: With dead ends: 5044 [2020-10-12 20:55:50,628 INFO L226 Difference]: Without dead ends: 4132 [2020-10-12 20:55:50,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2020-10-12 20:55:50,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 3927. [2020-10-12 20:55:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3927 states. [2020-10-12 20:55:50,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 6435 transitions. [2020-10-12 20:55:50,729 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 6435 transitions. Word has length 131 [2020-10-12 20:55:50,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:50,729 INFO L479 AbstractCegarLoop]: Abstraction has 3927 states and 6435 transitions. [2020-10-12 20:55:50,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 6435 transitions. [2020-10-12 20:55:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:55:50,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:50,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:50,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:55:50,735 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:50,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:50,735 INFO L82 PathProgramCache]: Analyzing trace with hash 784475024, now seen corresponding path program 1 times [2020-10-12 20:55:50,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:50,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328339043] [2020-10-12 20:55:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:51,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:55:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-12 20:55:51,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:51,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:51,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:51,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:51,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-12 20:55:51,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328339043] [2020-10-12 20:55:51,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:51,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:51,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223380194] [2020-10-12 20:55:51,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:51,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:51,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:51,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:51,307 INFO L87 Difference]: Start difference. First operand 3927 states and 6435 transitions. Second operand 5 states. [2020-10-12 20:55:52,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:52,488 INFO L93 Difference]: Finished difference Result 8167 states and 13336 transitions. [2020-10-12 20:55:52,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:52,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-12 20:55:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:52,494 INFO L225 Difference]: With dead ends: 8167 [2020-10-12 20:55:52,494 INFO L226 Difference]: Without dead ends: 4281 [2020-10-12 20:55:52,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2020-10-12 20:55:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3927. [2020-10-12 20:55:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3927 states. [2020-10-12 20:55:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 6425 transitions. [2020-10-12 20:55:52,600 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 6425 transitions. Word has length 132 [2020-10-12 20:55:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:52,601 INFO L479 AbstractCegarLoop]: Abstraction has 3927 states and 6425 transitions. [2020-10-12 20:55:52,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 6425 transitions. [2020-10-12 20:55:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 20:55:52,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:52,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:52,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:55:52,606 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1634009454, now seen corresponding path program 1 times [2020-10-12 20:55:52,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:52,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906227626] [2020-10-12 20:55:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:53,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 20:55:53,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-12 20:55:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:53,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:53,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:53,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:53,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-12 20:55:53,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906227626] [2020-10-12 20:55:53,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:53,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:53,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971430364] [2020-10-12 20:55:53,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:53,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:53,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:53,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:53,146 INFO L87 Difference]: Start difference. First operand 3927 states and 6425 transitions. Second operand 5 states. [2020-10-12 20:55:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:54,112 INFO L93 Difference]: Finished difference Result 7985 states and 13032 transitions. [2020-10-12 20:55:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:54,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-12 20:55:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:54,117 INFO L225 Difference]: With dead ends: 7985 [2020-10-12 20:55:54,118 INFO L226 Difference]: Without dead ends: 4099 [2020-10-12 20:55:54,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2020-10-12 20:55:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 3927. [2020-10-12 20:55:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3927 states. [2020-10-12 20:55:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 6415 transitions. [2020-10-12 20:55:54,220 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 6415 transitions. Word has length 132 [2020-10-12 20:55:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:54,220 INFO L479 AbstractCegarLoop]: Abstraction has 3927 states and 6415 transitions. [2020-10-12 20:55:54,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 6415 transitions. [2020-10-12 20:55:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 20:55:54,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:54,225 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2020-10-12 20:55:54,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:55:54,225 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:54,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2078147993, now seen corresponding path program 1 times [2020-10-12 20:55:54,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:54,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633978029] [2020-10-12 20:55:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:59,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 20:55:59,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4937 [2020-10-12 20:55:59,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 20:55:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 20:55:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:59,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:59,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:55:59,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633978029] [2020-10-12 20:55:59,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:59,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:55:59,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979871327] [2020-10-12 20:55:59,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:55:59,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:59,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:55:59,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:55:59,346 INFO L87 Difference]: Start difference. First operand 3927 states and 6415 transitions. Second operand 9 states. [2020-10-12 20:56:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:02,746 INFO L93 Difference]: Finished difference Result 8803 states and 14352 transitions. [2020-10-12 20:56:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:56:02,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-10-12 20:56:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:02,753 INFO L225 Difference]: With dead ends: 8803 [2020-10-12 20:56:02,753 INFO L226 Difference]: Without dead ends: 4917 [2020-10-12 20:56:02,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:56:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-12 20:56:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4627. [2020-10-12 20:56:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2020-10-12 20:56:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7601 transitions. [2020-10-12 20:56:02,860 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7601 transitions. Word has length 137 [2020-10-12 20:56:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:02,860 INFO L479 AbstractCegarLoop]: Abstraction has 4627 states and 7601 transitions. [2020-10-12 20:56:02,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:56:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7601 transitions. [2020-10-12 20:56:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 20:56:02,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:02,866 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:02,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 20:56:02,867 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:02,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:02,867 INFO L82 PathProgramCache]: Analyzing trace with hash -559687769, now seen corresponding path program 1 times [2020-10-12 20:56:02,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:02,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524538386] [2020-10-12 20:56:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:07,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 20:56:07,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:07,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 20:56:07,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:56:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:56:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:08,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:08,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:08,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:08,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:08,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 62 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:56:08,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524538386] [2020-10-12 20:56:08,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:08,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:56:08,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984104736] [2020-10-12 20:56:08,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:56:08,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:08,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:56:08,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:56:08,534 INFO L87 Difference]: Start difference. First operand 4627 states and 7601 transitions. Second operand 11 states. [2020-10-12 20:56:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:12,726 INFO L93 Difference]: Finished difference Result 8079 states and 13169 transitions. [2020-10-12 20:56:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:56:12,727 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 138 [2020-10-12 20:56:12,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:12,734 INFO L225 Difference]: With dead ends: 8079 [2020-10-12 20:56:12,734 INFO L226 Difference]: Without dead ends: 5655 [2020-10-12 20:56:12,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 9 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:56:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2020-10-12 20:56:12,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 5252. [2020-10-12 20:56:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2020-10-12 20:56:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8633 transitions. [2020-10-12 20:56:12,886 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8633 transitions. Word has length 138 [2020-10-12 20:56:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:12,886 INFO L479 AbstractCegarLoop]: Abstraction has 5252 states and 8633 transitions. [2020-10-12 20:56:12,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:56:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8633 transitions. [2020-10-12 20:56:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 20:56:12,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:12,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:12,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 20:56:12,893 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:12,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:12,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1169742321, now seen corresponding path program 1 times [2020-10-12 20:56:12,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:12,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521656058] [2020-10-12 20:56:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:13,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 20:56:13,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:56:13,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-12 20:56:13,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:56:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:56:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:13,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:13,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:13,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:13,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:13,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:13,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:13,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521656058] [2020-10-12 20:56:13,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:13,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:13,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803545246] [2020-10-12 20:56:13,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:13,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:13,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:13,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:13,363 INFO L87 Difference]: Start difference. First operand 5252 states and 8633 transitions. Second operand 5 states. [2020-10-12 20:56:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:14,666 INFO L93 Difference]: Finished difference Result 11418 states and 18752 transitions. [2020-10-12 20:56:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:14,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-12 20:56:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:14,676 INFO L225 Difference]: With dead ends: 11418 [2020-10-12 20:56:14,676 INFO L226 Difference]: Without dead ends: 6207 [2020-10-12 20:56:14,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6207 states. [2020-10-12 20:56:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6207 to 5483. [2020-10-12 20:56:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5483 states. [2020-10-12 20:56:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 9068 transitions. [2020-10-12 20:56:14,835 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 9068 transitions. Word has length 140 [2020-10-12 20:56:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:14,836 INFO L479 AbstractCegarLoop]: Abstraction has 5483 states and 9068 transitions. [2020-10-12 20:56:14,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 9068 transitions. [2020-10-12 20:56:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 20:56:14,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:14,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:14,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 20:56:14,840 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:14,841 INFO L82 PathProgramCache]: Analyzing trace with hash -245657734, now seen corresponding path program 1 times [2020-10-12 20:56:14,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:14,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269434063] [2020-10-12 20:56:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:17,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:17,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 20:56:17,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2533 [2020-10-12 20:56:17,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 20:56:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:56:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:17,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:17,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:17,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:17,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:17,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:56:17,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269434063] [2020-10-12 20:56:17,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:17,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:17,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512736140] [2020-10-12 20:56:17,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:17,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:17,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:17,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:17,477 INFO L87 Difference]: Start difference. First operand 5483 states and 9068 transitions. Second operand 5 states. [2020-10-12 20:56:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:18,871 INFO L93 Difference]: Finished difference Result 12248 states and 20233 transitions. [2020-10-12 20:56:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:18,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-12 20:56:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:18,879 INFO L225 Difference]: With dead ends: 12248 [2020-10-12 20:56:18,879 INFO L226 Difference]: Without dead ends: 6806 [2020-10-12 20:56:18,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6806 states. [2020-10-12 20:56:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6806 to 6022. [2020-10-12 20:56:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6022 states. [2020-10-12 20:56:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 10041 transitions. [2020-10-12 20:56:19,066 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 10041 transitions. Word has length 143 [2020-10-12 20:56:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:19,066 INFO L479 AbstractCegarLoop]: Abstraction has 6022 states and 10041 transitions. [2020-10-12 20:56:19,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 10041 transitions. [2020-10-12 20:56:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 20:56:19,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:19,071 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:19,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 20:56:19,071 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2003900554, now seen corresponding path program 1 times [2020-10-12 20:56:19,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:19,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444402677] [2020-10-12 20:56:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:21,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 20:56:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2063 [2020-10-12 20:56:21,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:56:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:56:21,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:21,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:21,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:21,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:21,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:21,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:21,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444402677] [2020-10-12 20:56:21,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:21,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:21,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094426518] [2020-10-12 20:56:21,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:21,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:21,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:21,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:21,276 INFO L87 Difference]: Start difference. First operand 6022 states and 10041 transitions. Second operand 5 states. [2020-10-12 20:56:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:22,547 INFO L93 Difference]: Finished difference Result 12727 states and 21119 transitions. [2020-10-12 20:56:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:22,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-12 20:56:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:22,555 INFO L225 Difference]: With dead ends: 12727 [2020-10-12 20:56:22,555 INFO L226 Difference]: Without dead ends: 6746 [2020-10-12 20:56:22,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2020-10-12 20:56:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6036. [2020-10-12 20:56:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6036 states. [2020-10-12 20:56:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 10055 transitions. [2020-10-12 20:56:22,723 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 10055 transitions. Word has length 144 [2020-10-12 20:56:22,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:22,723 INFO L479 AbstractCegarLoop]: Abstraction has 6036 states and 10055 transitions. [2020-10-12 20:56:22,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 10055 transitions. [2020-10-12 20:56:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 20:56:22,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:22,728 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:22,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 20:56:22,728 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1410371203, now seen corresponding path program 1 times [2020-10-12 20:56:22,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:22,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128531931] [2020-10-12 20:56:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:24,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:24,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 20:56:24,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:24,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-12 20:56:24,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-12 20:56:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:56:24,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:24,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:24,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:24,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:56:24,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128531931] [2020-10-12 20:56:24,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:24,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:24,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581164109] [2020-10-12 20:56:24,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:24,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:24,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:24,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:24,942 INFO L87 Difference]: Start difference. First operand 6036 states and 10055 transitions. Second operand 5 states.