/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.02.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:51:56,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:51:56,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:51:56,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:51:56,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:51:56,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:51:56,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:51:56,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:51:56,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:51:56,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:51:56,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:51:56,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:51:56,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:51:56,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:51:56,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:51:56,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:51:56,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:51:56,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:51:56,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:51:56,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:51:56,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:51:56,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:51:56,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:51:56,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:51:56,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:51:56,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:51:56,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:51:56,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:51:56,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:51:56,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:51:56,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:51:56,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:51:56,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:51:56,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:51:56,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:51:56,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:51:56,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:51:56,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:51:56,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:51:56,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:51:56,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:51:56,155 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 20:51:56,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:51:56,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:51:56,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:51:56,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:51:56,181 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:51:56,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:51:56,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:51:56,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:51:56,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:51:56,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:51:56,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:51:56,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:51:56,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:51:56,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:51:56,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:51:56,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:51:56,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:51:56,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:51:56,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:51:56,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:51:56,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:51:56,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:51:56,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:51:56,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:51:56,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:51:56,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:51:56,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:51:56,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:51:56,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:51:56,186 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 20:51:56,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:51:56,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:51:56,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:51:56,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:51:56,527 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:51:56,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.02.i.cil-1.c [2020-10-12 20:51:56,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f388daac/86d14f559c0e4405ad7f502bb287e67a/FLAGe97130773 [2020-10-12 20:51:57,230 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:51:57,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.02.i.cil-1.c [2020-10-12 20:51:57,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f388daac/86d14f559c0e4405ad7f502bb287e67a/FLAGe97130773 [2020-10-12 20:51:57,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f388daac/86d14f559c0e4405ad7f502bb287e67a [2020-10-12 20:51:57,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:51:57,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:51:57,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:51:57,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:51:57,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:51:57,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:51:57" (1/1) ... [2020-10-12 20:51:57,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c09893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:57, skipping insertion in model container [2020-10-12 20:51:57,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:51:57" (1/1) ... [2020-10-12 20:51:57,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:51:57,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:51:58,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:51:58,096 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:51:58,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:51:58,245 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:51:58,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58 WrapperNode [2020-10-12 20:51:58,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:51:58,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:51:58,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:51:58,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:51:58,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (1/1) ... [2020-10-12 20:51:58,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (1/1) ... [2020-10-12 20:51:58,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (1/1) ... [2020-10-12 20:51:58,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (1/1) ... [2020-10-12 20:51:58,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (1/1) ... [2020-10-12 20:51:58,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (1/1) ... [2020-10-12 20:51:58,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (1/1) ... [2020-10-12 20:51:58,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:51:58,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:51:58,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:51:58,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:51:58,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (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 20:51:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:51:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:51:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:51:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:51:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:51:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:51:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:51:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:51:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:51:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:51:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:51:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:51:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:51:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:51:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:51:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:51:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:51:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:51:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:51:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:51:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:51:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:51:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:51:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:51:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:51:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:51:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:51:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:51:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:51:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:51:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:51:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:51:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:51:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:51:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:51:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:51:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:51:59,036 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:51:59,639 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:51:59,639 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:51:59,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:51:59,665 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:51:59,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:51:59 BoogieIcfgContainer [2020-10-12 20:51:59,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:51:59,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:51:59,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:51:59,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:51:59,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:51:57" (1/3) ... [2020-10-12 20:51:59,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d8864d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:51:59, skipping insertion in model container [2020-10-12 20:51:59,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:51:58" (2/3) ... [2020-10-12 20:51:59,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d8864d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:51:59, skipping insertion in model container [2020-10-12 20:51:59,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:51:59" (3/3) ... [2020-10-12 20:51:59,679 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.02.i.cil-1.c [2020-10-12 20:51:59,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:51:59,698 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:51:59,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:51:59,739 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:51:59,740 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:51:59,740 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:51:59,740 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:51:59,740 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:51:59,740 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:51:59,740 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:51:59,741 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:51:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-10-12 20:51:59,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 20:51:59,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:59,774 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 20:51:59,774 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash 416306971, now seen corresponding path program 1 times [2020-10-12 20:51:59,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:59,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940235947] [2020-10-12 20:51:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:00,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 20:52:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-12 20:52:00,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:52:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:52:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:01,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:01,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:01,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:01,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:52:01,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:01,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:01,074 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 20:52:01,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940235947] [2020-10-12 20:52:01,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:01,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:01,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375855832] [2020-10-12 20:52:01,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:01,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:01,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:01,106 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 5 states. [2020-10-12 20:52:02,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:02,090 INFO L93 Difference]: Finished difference Result 323 states and 538 transitions. [2020-10-12 20:52:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:02,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-12 20:52:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:02,106 INFO L225 Difference]: With dead ends: 323 [2020-10-12 20:52:02,106 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 20:52:02,111 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 20:52:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 20:52:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-10-12 20:52:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-12 20:52:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 222 transitions. [2020-10-12 20:52:02,168 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 222 transitions. Word has length 51 [2020-10-12 20:52:02,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:02,169 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 222 transitions. [2020-10-12 20:52:02,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:02,169 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 222 transitions. [2020-10-12 20:52:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:52:02,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:02,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:02,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:52:02,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:02,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:02,174 INFO L82 PathProgramCache]: Analyzing trace with hash -816750361, now seen corresponding path program 1 times [2020-10-12 20:52:02,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:02,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967337841] [2020-10-12 20:52:02,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:03,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:03,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:52:03,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-12 20:52:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:52:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:03,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:03,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:03,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:52:03,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:03,769 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 20:52:03,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967337841] [2020-10-12 20:52:03,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:03,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:03,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548508534] [2020-10-12 20:52:03,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:03,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:03,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:03,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:03,794 INFO L87 Difference]: Start difference. First operand 147 states and 222 transitions. Second operand 5 states. [2020-10-12 20:52:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:04,639 INFO L93 Difference]: Finished difference Result 286 states and 429 transitions. [2020-10-12 20:52:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:04,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 20:52:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:04,642 INFO L225 Difference]: With dead ends: 286 [2020-10-12 20:52:04,642 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 20:52:04,647 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 20:52:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 20:52:04,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-10-12 20:52:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-12 20:52:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 221 transitions. [2020-10-12 20:52:04,671 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 221 transitions. Word has length 64 [2020-10-12 20:52:04,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:04,672 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 221 transitions. [2020-10-12 20:52:04,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 221 transitions. [2020-10-12 20:52:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:52:04,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:04,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:04,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:52:04,682 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1981568581, now seen corresponding path program 1 times [2020-10-12 20:52:04,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:04,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764439161] [2020-10-12 20:52:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:08,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:08,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:52:08,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3893 [2020-10-12 20:52:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:52:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:52:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:08,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:08,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:08,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:08,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:08,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:08,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:08,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764439161] [2020-10-12 20:52:08,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:08,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:08,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033226671] [2020-10-12 20:52:08,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:08,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:08,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:08,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:08,713 INFO L87 Difference]: Start difference. First operand 147 states and 221 transitions. Second operand 5 states. [2020-10-12 20:52:09,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:09,394 INFO L93 Difference]: Finished difference Result 286 states and 428 transitions. [2020-10-12 20:52:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:09,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:52:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:09,396 INFO L225 Difference]: With dead ends: 286 [2020-10-12 20:52:09,397 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 20:52:09,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 20:52:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2020-10-12 20:52:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 20:52:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 233 transitions. [2020-10-12 20:52:09,418 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 233 transitions. Word has length 65 [2020-10-12 20:52:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:09,419 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 233 transitions. [2020-10-12 20:52:09,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 233 transitions. [2020-10-12 20:52:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:52:09,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:09,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:09,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:52:09,421 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1284246148, now seen corresponding path program 1 times [2020-10-12 20:52:09,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:09,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819895261] [2020-10-12 20:52:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:09,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:10,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:52:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-12 20:52:10,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:52:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:10,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:10,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:52:10,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:10,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819895261] [2020-10-12 20:52:10,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:10,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:10,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807193151] [2020-10-12 20:52:10,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:10,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:10,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:10,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:10,396 INFO L87 Difference]: Start difference. First operand 157 states and 233 transitions. Second operand 5 states. [2020-10-12 20:52:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:11,055 INFO L93 Difference]: Finished difference Result 284 states and 425 transitions. [2020-10-12 20:52:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:11,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:52:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:11,057 INFO L225 Difference]: With dead ends: 284 [2020-10-12 20:52:11,058 INFO L226 Difference]: Without dead ends: 162 [2020-10-12 20:52:11,059 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 20:52:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-12 20:52:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2020-10-12 20:52:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 20:52:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 232 transitions. [2020-10-12 20:52:11,069 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 232 transitions. Word has length 65 [2020-10-12 20:52:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:11,070 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 232 transitions. [2020-10-12 20:52:11,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 232 transitions. [2020-10-12 20:52:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:52:11,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:11,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:11,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:52:11,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:11,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:11,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1784897669, now seen corresponding path program 1 times [2020-10-12 20:52:11,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:11,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595151026] [2020-10-12 20:52:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:11,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:52:11,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:11,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-12 20:52:11,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:11,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:11,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:52:11,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:11,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:11,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595151026] [2020-10-12 20:52:11,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:11,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:11,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626854220] [2020-10-12 20:52:11,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:11,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:11,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:11,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:11,612 INFO L87 Difference]: Start difference. First operand 157 states and 232 transitions. Second operand 5 states. [2020-10-12 20:52:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:12,254 INFO L93 Difference]: Finished difference Result 283 states and 423 transitions. [2020-10-12 20:52:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:12,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:52:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:12,255 INFO L225 Difference]: With dead ends: 283 [2020-10-12 20:52:12,256 INFO L226 Difference]: Without dead ends: 161 [2020-10-12 20:52:12,256 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 20:52:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-12 20:52:12,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2020-10-12 20:52:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 20:52:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 231 transitions. [2020-10-12 20:52:12,264 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 231 transitions. Word has length 65 [2020-10-12 20:52:12,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:12,264 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 231 transitions. [2020-10-12 20:52:12,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 231 transitions. [2020-10-12 20:52:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 20:52:12,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:12,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:12,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:52:12,266 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:12,266 INFO L82 PathProgramCache]: Analyzing trace with hash -874943050, now seen corresponding path program 1 times [2020-10-12 20:52:12,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:12,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713519337] [2020-10-12 20:52:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:12,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:16,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:17,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:17,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:52:17,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:52:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:52:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:52:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:52:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:17,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:17,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:17,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713519337] [2020-10-12 20:52:17,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:17,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:52:17,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649886325] [2020-10-12 20:52:17,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:52:17,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:17,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:52:17,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:52:17,520 INFO L87 Difference]: Start difference. First operand 157 states and 231 transitions. Second operand 8 states. [2020-10-12 20:52:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:18,969 INFO L93 Difference]: Finished difference Result 424 states and 637 transitions. [2020-10-12 20:52:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:18,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-12 20:52:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:18,972 INFO L225 Difference]: With dead ends: 424 [2020-10-12 20:52:18,972 INFO L226 Difference]: Without dead ends: 302 [2020-10-12 20:52:18,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:52:18,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-12 20:52:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 256. [2020-10-12 20:52:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-12 20:52:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 389 transitions. [2020-10-12 20:52:18,987 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 389 transitions. Word has length 66 [2020-10-12 20:52:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:18,987 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 389 transitions. [2020-10-12 20:52:18,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:52:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 389 transitions. [2020-10-12 20:52:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:52:18,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:18,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:18,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:52:18,989 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:18,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1266106814, now seen corresponding path program 1 times [2020-10-12 20:52:18,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:18,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812482148] [2020-10-12 20:52:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:19,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:19,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:19,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:52:19,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-12 20:52:19,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:52:19,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:52:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:19,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:19,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:19,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:19,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:19,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812482148] [2020-10-12 20:52:19,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:19,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:19,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638635663] [2020-10-12 20:52:19,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:19,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:19,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:19,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:19,540 INFO L87 Difference]: Start difference. First operand 256 states and 389 transitions. Second operand 5 states. [2020-10-12 20:52:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:20,383 INFO L93 Difference]: Finished difference Result 558 states and 856 transitions. [2020-10-12 20:52:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:20,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-12 20:52:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:20,388 INFO L225 Difference]: With dead ends: 558 [2020-10-12 20:52:20,388 INFO L226 Difference]: Without dead ends: 436 [2020-10-12 20:52:20,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-12 20:52:20,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 339. [2020-10-12 20:52:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-12 20:52:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 544 transitions. [2020-10-12 20:52:20,416 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 544 transitions. Word has length 68 [2020-10-12 20:52:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:20,417 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 544 transitions. [2020-10-12 20:52:20,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 544 transitions. [2020-10-12 20:52:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:52:20,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:20,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:20,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:52:20,418 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash 587450902, now seen corresponding path program 1 times [2020-10-12 20:52:20,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:20,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005183635] [2020-10-12 20:52:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:21,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:52:21,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:21,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-12 20:52:21,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:52:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:21,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:21,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:21,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:21,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:21,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005183635] [2020-10-12 20:52:21,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:21,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:21,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285185270] [2020-10-12 20:52:21,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:21,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:21,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:21,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:21,148 INFO L87 Difference]: Start difference. First operand 339 states and 544 transitions. Second operand 5 states. [2020-10-12 20:52:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:21,788 INFO L93 Difference]: Finished difference Result 646 states and 1022 transitions. [2020-10-12 20:52:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:21,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-12 20:52:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:21,793 INFO L225 Difference]: With dead ends: 646 [2020-10-12 20:52:21,793 INFO L226 Difference]: Without dead ends: 342 [2020-10-12 20:52:21,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-12 20:52:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 300. [2020-10-12 20:52:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-12 20:52:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 465 transitions. [2020-10-12 20:52:21,810 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 465 transitions. Word has length 69 [2020-10-12 20:52:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:21,811 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 465 transitions. [2020-10-12 20:52:21,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 465 transitions. [2020-10-12 20:52:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:52:21,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:21,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:21,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:52:21,813 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:21,814 INFO L82 PathProgramCache]: Analyzing trace with hash -477815252, now seen corresponding path program 1 times [2020-10-12 20:52:21,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:21,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188317652] [2020-10-12 20:52:21,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:26,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:26,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:52:26,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:52:26,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:52:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:52:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:52:26,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:26,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:26,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:52:26,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188317652] [2020-10-12 20:52:26,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:26,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:52:26,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121938234] [2020-10-12 20:52:26,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:52:26,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:26,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:52:26,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:26,977 INFO L87 Difference]: Start difference. First operand 300 states and 465 transitions. Second operand 6 states. [2020-10-12 20:52:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:27,754 INFO L93 Difference]: Finished difference Result 491 states and 757 transitions. [2020-10-12 20:52:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:52:27,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-12 20:52:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:27,757 INFO L225 Difference]: With dead ends: 491 [2020-10-12 20:52:27,757 INFO L226 Difference]: Without dead ends: 317 [2020-10-12 20:52:27,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:52:27,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-12 20:52:27,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 307. [2020-10-12 20:52:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-12 20:52:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 473 transitions. [2020-10-12 20:52:27,769 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 473 transitions. Word has length 79 [2020-10-12 20:52:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:27,769 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 473 transitions. [2020-10-12 20:52:27,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:52:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 473 transitions. [2020-10-12 20:52:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:52:27,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:27,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:27,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:52:27,771 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:27,772 INFO L82 PathProgramCache]: Analyzing trace with hash 586764992, now seen corresponding path program 1 times [2020-10-12 20:52:27,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:27,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908554338] [2020-10-12 20:52:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:32,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:52:32,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 20:52:32,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:52:32,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:32,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:32,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:32,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:32,915 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 20:52:32,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908554338] [2020-10-12 20:52:32,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:32,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:32,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910830212] [2020-10-12 20:52:32,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:32,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:32,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:32,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:32,918 INFO L87 Difference]: Start difference. First operand 307 states and 473 transitions. Second operand 5 states. [2020-10-12 20:52:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:33,559 INFO L93 Difference]: Finished difference Result 493 states and 757 transitions. [2020-10-12 20:52:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:33,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:52:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:33,563 INFO L225 Difference]: With dead ends: 493 [2020-10-12 20:52:33,563 INFO L226 Difference]: Without dead ends: 311 [2020-10-12 20:52:33,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-12 20:52:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2020-10-12 20:52:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-12 20:52:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 472 transitions. [2020-10-12 20:52:33,577 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 472 transitions. Word has length 79 [2020-10-12 20:52:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:33,578 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 472 transitions. [2020-10-12 20:52:33,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 472 transitions. [2020-10-12 20:52:33,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:52:33,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:33,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:33,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:52:33,580 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:33,580 INFO L82 PathProgramCache]: Analyzing trace with hash -246918589, now seen corresponding path program 1 times [2020-10-12 20:52:33,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:33,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087010121] [2020-10-12 20:52:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:33,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:38,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:52:38,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:38,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:52:38,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:38,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:52:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:38,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:38,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:38,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:38,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:52:38,684 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 20:52:38,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087010121] [2020-10-12 20:52:38,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:38,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:38,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743065036] [2020-10-12 20:52:38,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:38,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:38,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:38,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:38,686 INFO L87 Difference]: Start difference. First operand 307 states and 472 transitions. Second operand 5 states. [2020-10-12 20:52:39,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:39,276 INFO L93 Difference]: Finished difference Result 493 states and 756 transitions. [2020-10-12 20:52:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:39,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:52:39,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:39,279 INFO L225 Difference]: With dead ends: 493 [2020-10-12 20:52:39,279 INFO L226 Difference]: Without dead ends: 311 [2020-10-12 20:52:39,280 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 20:52:39,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-12 20:52:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2020-10-12 20:52:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-12 20:52:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 471 transitions. [2020-10-12 20:52:39,292 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 471 transitions. Word has length 80 [2020-10-12 20:52:39,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:39,294 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 471 transitions. [2020-10-12 20:52:39,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 471 transitions. [2020-10-12 20:52:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:52:39,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:39,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:39,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:52:39,296 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:39,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1364797339, now seen corresponding path program 1 times [2020-10-12 20:52:39,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:39,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224885058] [2020-10-12 20:52:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:39,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:39,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:39,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:52:42,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3558 [2020-10-12 20:52:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:52:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:52:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:42,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:42,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:42,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:42,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:42,949 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 20:52:42,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224885058] [2020-10-12 20:52:42,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:42,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:42,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87923490] [2020-10-12 20:52:42,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:42,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:42,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:42,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:42,951 INFO L87 Difference]: Start difference. First operand 307 states and 471 transitions. Second operand 5 states. [2020-10-12 20:52:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:43,649 INFO L93 Difference]: Finished difference Result 493 states and 755 transitions. [2020-10-12 20:52:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:43,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:52:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:43,653 INFO L225 Difference]: With dead ends: 493 [2020-10-12 20:52:43,653 INFO L226 Difference]: Without dead ends: 311 [2020-10-12 20:52:43,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-12 20:52:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2020-10-12 20:52:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-12 20:52:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 470 transitions. [2020-10-12 20:52:43,670 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 470 transitions. Word has length 81 [2020-10-12 20:52:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:43,671 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 470 transitions. [2020-10-12 20:52:43,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 470 transitions. [2020-10-12 20:52:43,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:52:43,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:43,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:43,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:52:43,681 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:43,682 INFO L82 PathProgramCache]: Analyzing trace with hash 619583268, now seen corresponding path program 1 times [2020-10-12 20:52:43,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:43,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615619475] [2020-10-12 20:52:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:52:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-12 20:52:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:52:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:52:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:44,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:44,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:44,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:44,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:44,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:44,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:44,735 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 20:52:44,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615619475] [2020-10-12 20:52:44,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:44,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:44,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698957548] [2020-10-12 20:52:44,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:44,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:44,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:44,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:44,738 INFO L87 Difference]: Start difference. First operand 307 states and 470 transitions. Second operand 5 states. [2020-10-12 20:52:45,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:45,605 INFO L93 Difference]: Finished difference Result 542 states and 831 transitions. [2020-10-12 20:52:45,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:45,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 20:52:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:45,608 INFO L225 Difference]: With dead ends: 542 [2020-10-12 20:52:45,608 INFO L226 Difference]: Without dead ends: 389 [2020-10-12 20:52:45,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-12 20:52:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2020-10-12 20:52:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-12 20:52:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 528 transitions. [2020-10-12 20:52:45,624 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 528 transitions. Word has length 81 [2020-10-12 20:52:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:45,624 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 528 transitions. [2020-10-12 20:52:45,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 528 transitions. [2020-10-12 20:52:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:52:45,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:45,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:45,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:52:45,627 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:45,627 INFO L82 PathProgramCache]: Analyzing trace with hash -404899042, now seen corresponding path program 1 times [2020-10-12 20:52:45,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:45,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049182835] [2020-10-12 20:52:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:50,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:50,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:52:50,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:52:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:52:50,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:52:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:52:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:50,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:50,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:50,733 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 20:52:50,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049182835] [2020-10-12 20:52:50,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:50,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:50,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173946313] [2020-10-12 20:52:50,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:50,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:50,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:50,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:50,735 INFO L87 Difference]: Start difference. First operand 339 states and 528 transitions. Second operand 5 states. [2020-10-12 20:52:51,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:51,396 INFO L93 Difference]: Finished difference Result 574 states and 887 transitions. [2020-10-12 20:52:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:51,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:52:51,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:51,400 INFO L225 Difference]: With dead ends: 574 [2020-10-12 20:52:51,400 INFO L226 Difference]: Without dead ends: 379 [2020-10-12 20:52:51,401 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 20:52:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-12 20:52:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 348. [2020-10-12 20:52:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-12 20:52:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 537 transitions. [2020-10-12 20:52:51,413 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 537 transitions. Word has length 82 [2020-10-12 20:52:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:51,413 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 537 transitions. [2020-10-12 20:52:51,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 537 transitions. [2020-10-12 20:52:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 20:52:51,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:51,415 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 20:52:51,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:52:51,415 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:51,416 INFO L82 PathProgramCache]: Analyzing trace with hash -933400088, now seen corresponding path program 1 times [2020-10-12 20:52:51,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:51,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056816369] [2020-10-12 20:52:51,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:51,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:52:51,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 20:52:51,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:52:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:52:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:51,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:51,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:51,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:51,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:51,799 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 20:52:51,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056816369] [2020-10-12 20:52:51,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:51,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:51,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135271788] [2020-10-12 20:52:51,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:51,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:51,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:51,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:51,801 INFO L87 Difference]: Start difference. First operand 348 states and 537 transitions. Second operand 5 states. [2020-10-12 20:52:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:52,707 INFO L93 Difference]: Finished difference Result 732 states and 1133 transitions. [2020-10-12 20:52:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:52,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-12 20:52:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:52,713 INFO L225 Difference]: With dead ends: 732 [2020-10-12 20:52:52,713 INFO L226 Difference]: Without dead ends: 538 [2020-10-12 20:52:52,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:52,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-12 20:52:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 433. [2020-10-12 20:52:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-12 20:52:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 694 transitions. [2020-10-12 20:52:52,730 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 694 transitions. Word has length 82 [2020-10-12 20:52:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:52,730 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 694 transitions. [2020-10-12 20:52:52,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:52,730 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 694 transitions. [2020-10-12 20:52:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:52:52,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:52,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:52,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:52:52,733 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:52,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:52,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1122213676, now seen corresponding path program 1 times [2020-10-12 20:52:52,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:52,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950654874] [2020-10-12 20:52:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:53,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:52:53,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-12 20:52:53,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:52:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:52:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:52:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:53,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:53,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:53,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:52:53,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950654874] [2020-10-12 20:52:53,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:53,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:53,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528275687] [2020-10-12 20:52:53,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:53,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:53,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:53,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:53,253 INFO L87 Difference]: Start difference. First operand 433 states and 694 transitions. Second operand 5 states. [2020-10-12 20:52:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:53,854 INFO L93 Difference]: Finished difference Result 870 states and 1398 transitions. [2020-10-12 20:52:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:53,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-12 20:52:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:53,858 INFO L225 Difference]: With dead ends: 870 [2020-10-12 20:52:53,858 INFO L226 Difference]: Without dead ends: 462 [2020-10-12 20:52:53,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:52:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-12 20:52:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 433. [2020-10-12 20:52:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-12 20:52:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 692 transitions. [2020-10-12 20:52:53,875 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 692 transitions. Word has length 83 [2020-10-12 20:52:53,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:53,876 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 692 transitions. [2020-10-12 20:52:53,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 692 transitions. [2020-10-12 20:52:53,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 20:52:53,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:53,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:53,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:52:53,878 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:53,879 INFO L82 PathProgramCache]: Analyzing trace with hash -319309062, now seen corresponding path program 1 times [2020-10-12 20:52:53,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:53,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852619647] [2020-10-12 20:52:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:58,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:58,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:58,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:52:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:52:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:52:58,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:52:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:52:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:52:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:59,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:59,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:59,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:59,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:59,017 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 20:52:59,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852619647] [2020-10-12 20:52:59,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:59,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:59,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070508011] [2020-10-12 20:52:59,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:59,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:59,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:59,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:59,020 INFO L87 Difference]: Start difference. First operand 433 states and 692 transitions. Second operand 5 states. [2020-10-12 20:52:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:59,888 INFO L93 Difference]: Finished difference Result 841 states and 1322 transitions. [2020-10-12 20:52:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:59,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-12 20:52:59,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:59,894 INFO L225 Difference]: With dead ends: 841 [2020-10-12 20:52:59,894 INFO L226 Difference]: Without dead ends: 593 [2020-10-12 20:52:59,896 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 20:52:59,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-12 20:52:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 449. [2020-10-12 20:52:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-12 20:52:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 713 transitions. [2020-10-12 20:52:59,917 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 713 transitions. Word has length 83 [2020-10-12 20:52:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:59,917 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 713 transitions. [2020-10-12 20:52:59,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 713 transitions. [2020-10-12 20:52:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:52:59,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:59,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:59,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:52:59,919 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:59,920 INFO L82 PathProgramCache]: Analyzing trace with hash -675975357, now seen corresponding path program 1 times [2020-10-12 20:52:59,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:59,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220272646] [2020-10-12 20:52:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:04,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:04,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:53:04,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:53:04,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:53:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:53:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:05,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:05,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:05,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:05,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:05,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:05,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:05,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:05,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:05,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:05,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:05,111 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 20:53:05,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220272646] [2020-10-12 20:53:05,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:05,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:53:05,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635667225] [2020-10-12 20:53:05,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:53:05,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:05,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:53:05,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:53:05,113 INFO L87 Difference]: Start difference. First operand 449 states and 713 transitions. Second operand 9 states. [2020-10-12 20:53:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:06,787 INFO L93 Difference]: Finished difference Result 940 states and 1485 transitions. [2020-10-12 20:53:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:53:06,788 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-12 20:53:06,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:06,793 INFO L225 Difference]: With dead ends: 940 [2020-10-12 20:53:06,793 INFO L226 Difference]: Without dead ends: 686 [2020-10-12 20:53:06,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:53:06,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-10-12 20:53:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 458. [2020-10-12 20:53:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-12 20:53:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 724 transitions. [2020-10-12 20:53:06,814 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 724 transitions. Word has length 84 [2020-10-12 20:53:06,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:06,815 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 724 transitions. [2020-10-12 20:53:06,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:53:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 724 transitions. [2020-10-12 20:53:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:53:06,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:06,817 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:06,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:53:06,818 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:06,818 INFO L82 PathProgramCache]: Analyzing trace with hash -519464240, now seen corresponding path program 1 times [2020-10-12 20:53:06,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:06,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779419745] [2020-10-12 20:53:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:06,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:06,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:06,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:08,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:53:08,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-12 20:53:08,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:53:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:08,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:08,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:08,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:08,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:08,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:08,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:53:08,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779419745] [2020-10-12 20:53:08,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:08,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:08,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448969390] [2020-10-12 20:53:08,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:08,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:08,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:08,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:08,523 INFO L87 Difference]: Start difference. First operand 458 states and 724 transitions. Second operand 5 states. [2020-10-12 20:53:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:09,088 INFO L93 Difference]: Finished difference Result 896 states and 1425 transitions. [2020-10-12 20:53:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:09,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-12 20:53:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:09,091 INFO L225 Difference]: With dead ends: 896 [2020-10-12 20:53:09,091 INFO L226 Difference]: Without dead ends: 462 [2020-10-12 20:53:09,092 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 20:53:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-12 20:53:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 458. [2020-10-12 20:53:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-12 20:53:09,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 723 transitions. [2020-10-12 20:53:09,107 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 723 transitions. Word has length 84 [2020-10-12 20:53:09,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:09,107 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 723 transitions. [2020-10-12 20:53:09,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 723 transitions. [2020-10-12 20:53:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:53:09,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:09,109 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, 1] [2020-10-12 20:53:09,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:53:09,109 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:09,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:09,110 INFO L82 PathProgramCache]: Analyzing trace with hash 273546962, now seen corresponding path program 1 times [2020-10-12 20:53:09,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:09,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367975822] [2020-10-12 20:53:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-12 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:53:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:09,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:09,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:09,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:09,682 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 20:53:09,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367975822] [2020-10-12 20:53:09,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:09,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:09,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544786615] [2020-10-12 20:53:09,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:09,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:09,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:09,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:09,684 INFO L87 Difference]: Start difference. First operand 458 states and 723 transitions. Second operand 5 states. [2020-10-12 20:53:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:10,597 INFO L93 Difference]: Finished difference Result 904 states and 1424 transitions. [2020-10-12 20:53:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:10,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:53:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:10,606 INFO L225 Difference]: With dead ends: 904 [2020-10-12 20:53:10,606 INFO L226 Difference]: Without dead ends: 650 [2020-10-12 20:53:10,607 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 20:53:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-12 20:53:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 541. [2020-10-12 20:53:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-10-12 20:53:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 876 transitions. [2020-10-12 20:53:10,623 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 876 transitions. Word has length 90 [2020-10-12 20:53:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:10,624 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 876 transitions. [2020-10-12 20:53:10,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 876 transitions. [2020-10-12 20:53:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:53:10,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:10,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:10,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:53:10,626 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:10,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:10,627 INFO L82 PathProgramCache]: Analyzing trace with hash -623846316, now seen corresponding path program 1 times [2020-10-12 20:53:10,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:10,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002276719] [2020-10-12 20:53:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:11,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:53:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-12 20:53:11,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:53:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:11,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:11,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:11,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:11,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:11,093 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 20:53:11,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002276719] [2020-10-12 20:53:11,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:11,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:11,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009465380] [2020-10-12 20:53:11,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:11,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:11,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:11,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:11,094 INFO L87 Difference]: Start difference. First operand 541 states and 876 transitions. Second operand 5 states. [2020-10-12 20:53:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:11,812 INFO L93 Difference]: Finished difference Result 1174 states and 1899 transitions. [2020-10-12 20:53:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:11,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:53:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:11,817 INFO L225 Difference]: With dead ends: 1174 [2020-10-12 20:53:11,817 INFO L226 Difference]: Without dead ends: 657 [2020-10-12 20:53:11,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-10-12 20:53:11,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 589. [2020-10-12 20:53:11,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-10-12 20:53:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 960 transitions. [2020-10-12 20:53:11,838 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 960 transitions. Word has length 90 [2020-10-12 20:53:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:11,838 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 960 transitions. [2020-10-12 20:53:11,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 960 transitions. [2020-10-12 20:53:11,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:53:11,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:11,841 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:11,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:53:11,841 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:11,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1022204551, now seen corresponding path program 1 times [2020-10-12 20:53:11,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:11,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400882303] [2020-10-12 20:53:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:16,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 20:53:16,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:53:16,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:53:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:53:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:17,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:17,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:17,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:17,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:17,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:17,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:17,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 20:53:17,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400882303] [2020-10-12 20:53:17,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:17,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:53:17,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347424598] [2020-10-12 20:53:17,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:53:17,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:17,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:53:17,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:53:17,209 INFO L87 Difference]: Start difference. First operand 589 states and 960 transitions. Second operand 9 states. [2020-10-12 20:53:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:19,360 INFO L93 Difference]: Finished difference Result 1305 states and 2116 transitions. [2020-10-12 20:53:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:53:19,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:53:19,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:19,369 INFO L225 Difference]: With dead ends: 1305 [2020-10-12 20:53:19,370 INFO L226 Difference]: Without dead ends: 985 [2020-10-12 20:53:19,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:53:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2020-10-12 20:53:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 675. [2020-10-12 20:53:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-12 20:53:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1100 transitions. [2020-10-12 20:53:19,396 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1100 transitions. Word has length 96 [2020-10-12 20:53:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:19,397 INFO L479 AbstractCegarLoop]: Abstraction has 675 states and 1100 transitions. [2020-10-12 20:53:19,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:53:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1100 transitions. [2020-10-12 20:53:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:53:19,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:19,399 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:19,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:53:19,399 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:19,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:19,400 INFO L82 PathProgramCache]: Analyzing trace with hash -865693434, now seen corresponding path program 1 times [2020-10-12 20:53:19,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:19,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586620951] [2020-10-12 20:53:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:20,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 20:53:20,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:20,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1223 [2020-10-12 20:53:20,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:53:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:53:20,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:20,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:53:20,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586620951] [2020-10-12 20:53:20,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:20,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:20,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407657212] [2020-10-12 20:53:20,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:20,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:20,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:20,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:20,706 INFO L87 Difference]: Start difference. First operand 675 states and 1100 transitions. Second operand 5 states. [2020-10-12 20:53:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:21,312 INFO L93 Difference]: Finished difference Result 1366 states and 2225 transitions. [2020-10-12 20:53:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:21,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-12 20:53:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:21,316 INFO L225 Difference]: With dead ends: 1366 [2020-10-12 20:53:21,317 INFO L226 Difference]: Without dead ends: 715 [2020-10-12 20:53:21,318 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 20:53:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-12 20:53:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 675. [2020-10-12 20:53:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-12 20:53:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1098 transitions. [2020-10-12 20:53:21,344 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1098 transitions. Word has length 96 [2020-10-12 20:53:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:21,344 INFO L479 AbstractCegarLoop]: Abstraction has 675 states and 1098 transitions. [2020-10-12 20:53:21,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1098 transitions. [2020-10-12 20:53:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 20:53:21,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:21,346 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:21,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:53:21,347 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:21,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2103578083, now seen corresponding path program 1 times [2020-10-12 20:53:21,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:21,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557332611] [2020-10-12 20:53:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:22,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:22,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 20:53:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-12 20:53:22,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:53:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:53:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:22,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:22,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:53:22,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557332611] [2020-10-12 20:53:22,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:22,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:22,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835549458] [2020-10-12 20:53:22,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:22,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:22,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:22,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:22,557 INFO L87 Difference]: Start difference. First operand 675 states and 1098 transitions. Second operand 5 states. [2020-10-12 20:53:23,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:23,329 INFO L93 Difference]: Finished difference Result 1404 states and 2275 transitions. [2020-10-12 20:53:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:23,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-12 20:53:23,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:23,333 INFO L225 Difference]: With dead ends: 1404 [2020-10-12 20:53:23,334 INFO L226 Difference]: Without dead ends: 753 [2020-10-12 20:53:23,335 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 20:53:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-10-12 20:53:23,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 675. [2020-10-12 20:53:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-12 20:53:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1096 transitions. [2020-10-12 20:53:23,357 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1096 transitions. Word has length 97 [2020-10-12 20:53:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:23,358 INFO L479 AbstractCegarLoop]: Abstraction has 675 states and 1096 transitions. [2020-10-12 20:53:23,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1096 transitions. [2020-10-12 20:53:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 20:53:23,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:23,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:23,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:53:23,360 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:23,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1904783573, now seen corresponding path program 1 times [2020-10-12 20:53:23,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:23,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522056073] [2020-10-12 20:53:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:26,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:53:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3529 [2020-10-12 20:53:26,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:53:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:53:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:27,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:27,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:27,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:53:27,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522056073] [2020-10-12 20:53:27,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:27,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:27,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387889219] [2020-10-12 20:53:27,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:27,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:27,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:27,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:27,021 INFO L87 Difference]: Start difference. First operand 675 states and 1096 transitions. Second operand 5 states. [2020-10-12 20:53:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:27,704 INFO L93 Difference]: Finished difference Result 1977 states and 3221 transitions. [2020-10-12 20:53:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:27,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 20:53:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:27,711 INFO L225 Difference]: With dead ends: 1977 [2020-10-12 20:53:27,711 INFO L226 Difference]: Without dead ends: 1326 [2020-10-12 20:53:27,713 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 20:53:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-10-12 20:53:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1324. [2020-10-12 20:53:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-12 20:53:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2130 transitions. [2020-10-12 20:53:27,773 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2130 transitions. Word has length 98 [2020-10-12 20:53:27,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:27,774 INFO L479 AbstractCegarLoop]: Abstraction has 1324 states and 2130 transitions. [2020-10-12 20:53:27,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2130 transitions. [2020-10-12 20:53:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 20:53:27,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:27,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:27,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:53:27,779 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:27,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1487386967, now seen corresponding path program 1 times [2020-10-12 20:53:27,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:27,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981731585] [2020-10-12 20:53:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:29,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:53:29,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:29,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-10-12 20:53:29,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 20:53:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:53:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:53:29,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:29,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:29,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:29,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:29,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 20:53:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:53:29,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981731585] [2020-10-12 20:53:29,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:29,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:29,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184833157] [2020-10-12 20:53:29,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:29,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:29,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:29,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:29,465 INFO L87 Difference]: Start difference. First operand 1324 states and 2130 transitions. Second operand 5 states. [2020-10-12 20:53:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:30,400 INFO L93 Difference]: Finished difference Result 2989 states and 4801 transitions. [2020-10-12 20:53:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:30,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 20:53:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:30,407 INFO L225 Difference]: With dead ends: 2989 [2020-10-12 20:53:30,407 INFO L226 Difference]: Without dead ends: 1704 [2020-10-12 20:53:30,409 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 20:53:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-10-12 20:53:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1334. [2020-10-12 20:53:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-10-12 20:53:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 2142 transitions. [2020-10-12 20:53:30,457 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 2142 transitions. Word has length 98 [2020-10-12 20:53:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:30,457 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 2142 transitions. [2020-10-12 20:53:30,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 2142 transitions. [2020-10-12 20:53:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:53:30,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:30,461 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:30,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:53:30,461 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:30,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:30,462 INFO L82 PathProgramCache]: Analyzing trace with hash 572504783, now seen corresponding path program 1 times [2020-10-12 20:53:30,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:30,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282771743] [2020-10-12 20:53:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:31,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:33,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:53:33,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:33,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2915 [2020-10-12 20:53:33,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:53:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:53:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:33,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:33,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:33,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:33,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:53:33,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282771743] [2020-10-12 20:53:33,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:33,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:33,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915415068] [2020-10-12 20:53:33,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:33,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:33,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:33,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:33,460 INFO L87 Difference]: Start difference. First operand 1334 states and 2142 transitions. Second operand 5 states. [2020-10-12 20:53:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:34,234 INFO L93 Difference]: Finished difference Result 2787 states and 4452 transitions. [2020-10-12 20:53:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:34,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:53:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:34,243 INFO L225 Difference]: With dead ends: 2787 [2020-10-12 20:53:34,243 INFO L226 Difference]: Without dead ends: 1490 [2020-10-12 20:53:34,246 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 20:53:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2020-10-12 20:53:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1334. [2020-10-12 20:53:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-10-12 20:53:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 2138 transitions. [2020-10-12 20:53:34,287 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 2138 transitions. Word has length 104 [2020-10-12 20:53:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:34,288 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 2138 transitions. [2020-10-12 20:53:34,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 2138 transitions. [2020-10-12 20:53:34,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:53:34,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:34,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:34,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:53:34,291 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:34,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:34,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1781155664, now seen corresponding path program 1 times [2020-10-12 20:53:34,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:34,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781713672] [2020-10-12 20:53:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:37,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:53:37,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:37,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3527 [2020-10-12 20:53:37,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:53:37,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:37,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:37,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:37,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:37,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:37,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:37,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:37,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:37,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781713672] [2020-10-12 20:53:37,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:37,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:37,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636123918] [2020-10-12 20:53:37,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:37,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:37,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:37,924 INFO L87 Difference]: Start difference. First operand 1334 states and 2138 transitions. Second operand 5 states. [2020-10-12 20:53:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:38,860 INFO L93 Difference]: Finished difference Result 2877 states and 4552 transitions. [2020-10-12 20:53:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:38,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:53:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:38,868 INFO L225 Difference]: With dead ends: 2877 [2020-10-12 20:53:38,868 INFO L226 Difference]: Without dead ends: 1540 [2020-10-12 20:53:38,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-10-12 20:53:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1334. [2020-10-12 20:53:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-10-12 20:53:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 2134 transitions. [2020-10-12 20:53:38,914 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 2134 transitions. Word has length 104 [2020-10-12 20:53:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:38,914 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 2134 transitions. [2020-10-12 20:53:38,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 2134 transitions. [2020-10-12 20:53:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:53:38,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:38,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:38,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:53:38,918 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:38,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:38,918 INFO L82 PathProgramCache]: Analyzing trace with hash -520238414, now seen corresponding path program 1 times [2020-10-12 20:53:38,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:38,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813267241] [2020-10-12 20:53:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:39,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:42,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:53:42,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3387 [2020-10-12 20:53:42,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:53:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:53:42,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:42,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:42,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:42,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:42,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:42,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:42,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813267241] [2020-10-12 20:53:42,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:42,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:42,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155295916] [2020-10-12 20:53:42,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:42,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:42,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:42,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:42,406 INFO L87 Difference]: Start difference. First operand 1334 states and 2134 transitions. Second operand 5 states. [2020-10-12 20:53:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:43,138 INFO L93 Difference]: Finished difference Result 2771 states and 4402 transitions. [2020-10-12 20:53:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:43,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:53:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:43,146 INFO L225 Difference]: With dead ends: 2771 [2020-10-12 20:53:43,146 INFO L226 Difference]: Without dead ends: 1434 [2020-10-12 20:53:43,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2020-10-12 20:53:43,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1334. [2020-10-12 20:53:43,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-10-12 20:53:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 2130 transitions. [2020-10-12 20:53:43,191 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 2130 transitions. Word has length 104 [2020-10-12 20:53:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:43,192 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 2130 transitions. [2020-10-12 20:53:43,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 2130 transitions. [2020-10-12 20:53:43,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:53:43,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:43,195 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:43,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:53:43,195 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:43,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1092392506, now seen corresponding path program 1 times [2020-10-12 20:53:43,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:43,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828755080] [2020-10-12 20:53:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:45,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:53:45,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2327 [2020-10-12 20:53:45,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 20:53:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:53:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:45,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:45,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:45,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:53:45,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828755080] [2020-10-12 20:53:45,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:45,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:45,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551359439] [2020-10-12 20:53:45,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:45,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:45,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:45,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:45,609 INFO L87 Difference]: Start difference. First operand 1334 states and 2130 transitions. Second operand 5 states. [2020-10-12 20:53:46,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:46,365 INFO L93 Difference]: Finished difference Result 2881 states and 4588 transitions. [2020-10-12 20:53:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:46,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:53:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:46,373 INFO L225 Difference]: With dead ends: 2881 [2020-10-12 20:53:46,374 INFO L226 Difference]: Without dead ends: 1584 [2020-10-12 20:53:46,376 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 20:53:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-10-12 20:53:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1436. [2020-10-12 20:53:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-12 20:53:46,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2308 transitions. [2020-10-12 20:53:46,421 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2308 transitions. Word has length 105 [2020-10-12 20:53:46,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:46,421 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 2308 transitions. [2020-10-12 20:53:46,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:46,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2308 transitions. [2020-10-12 20:53:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:53:46,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:46,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:46,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:53:46,425 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:46,425 INFO L82 PathProgramCache]: Analyzing trace with hash -947873896, now seen corresponding path program 1 times [2020-10-12 20:53:46,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:46,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850271217] [2020-10-12 20:53:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:47,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:47,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:53:47,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-12 20:53:47,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:47,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:47,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:47,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:47,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:47,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:47,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850271217] [2020-10-12 20:53:47,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:47,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:47,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473255949] [2020-10-12 20:53:47,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:47,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:47,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:47,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:47,202 INFO L87 Difference]: Start difference. First operand 1436 states and 2308 transitions. Second operand 5 states. [2020-10-12 20:53:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:48,154 INFO L93 Difference]: Finished difference Result 3037 states and 4838 transitions. [2020-10-12 20:53:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:48,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:53:48,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:48,162 INFO L225 Difference]: With dead ends: 3037 [2020-10-12 20:53:48,163 INFO L226 Difference]: Without dead ends: 1638 [2020-10-12 20:53:48,165 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 20:53:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2020-10-12 20:53:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1436. [2020-10-12 20:53:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-12 20:53:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2304 transitions. [2020-10-12 20:53:48,202 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2304 transitions. Word has length 105 [2020-10-12 20:53:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:48,202 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 2304 transitions. [2020-10-12 20:53:48,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2304 transitions. [2020-10-12 20:53:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:53:48,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:48,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:48,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:53:48,206 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash -514144810, now seen corresponding path program 1 times [2020-10-12 20:53:48,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:48,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427997970] [2020-10-12 20:53:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:48,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:53:48,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:53:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-12 20:53:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:53:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:53:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:48,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:48,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:48,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:48,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:53:48,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427997970] [2020-10-12 20:53:48,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:48,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:48,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980176059] [2020-10-12 20:53:48,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:48,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:48,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:48,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:48,867 INFO L87 Difference]: Start difference. First operand 1436 states and 2304 transitions. Second operand 5 states. [2020-10-12 20:53:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:49,634 INFO L93 Difference]: Finished difference Result 2931 states and 4688 transitions. [2020-10-12 20:53:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:49,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:53:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:49,642 INFO L225 Difference]: With dead ends: 2931 [2020-10-12 20:53:49,643 INFO L226 Difference]: Without dead ends: 1532 [2020-10-12 20:53:49,645 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 20:53:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-10-12 20:53:49,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1436. [2020-10-12 20:53:49,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-12 20:53:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2300 transitions. [2020-10-12 20:53:49,683 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2300 transitions. Word has length 105 [2020-10-12 20:53:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:49,683 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 2300 transitions. [2020-10-12 20:53:49,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2300 transitions. [2020-10-12 20:53:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 20:53:49,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:49,686 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:49,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:53:49,687 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:49,687 INFO L82 PathProgramCache]: Analyzing trace with hash -785680226, now seen corresponding path program 1 times [2020-10-12 20:53:49,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:49,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145754432] [2020-10-12 20:53:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:52,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 20:53:52,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2353 [2020-10-12 20:53:52,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:53:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:53:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:52,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:52,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:52,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:52,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:53:52,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:52,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:53:52,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145754432] [2020-10-12 20:53:52,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:52,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:52,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112803876] [2020-10-12 20:53:52,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:52,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:52,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:52,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:52,124 INFO L87 Difference]: Start difference. First operand 1436 states and 2300 transitions. Second operand 5 states. [2020-10-12 20:53:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:52,852 INFO L93 Difference]: Finished difference Result 2991 states and 4768 transitions. [2020-10-12 20:53:52,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:52,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 20:53:52,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:52,860 INFO L225 Difference]: With dead ends: 2991 [2020-10-12 20:53:52,861 INFO L226 Difference]: Without dead ends: 1592 [2020-10-12 20:53:52,863 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 20:53:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2020-10-12 20:53:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1436. [2020-10-12 20:53:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-12 20:53:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2296 transitions. [2020-10-12 20:53:52,902 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2296 transitions. Word has length 107 [2020-10-12 20:53:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:52,902 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 2296 transitions. [2020-10-12 20:53:52,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2296 transitions. [2020-10-12 20:53:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:53:52,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:52,905 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:52,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:53:52,905 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:52,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1561870317, now seen corresponding path program 1 times [2020-10-12 20:53:52,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:52,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048496889] [2020-10-12 20:53:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:55,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:55,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:53:55,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2383 [2020-10-12 20:53:55,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 20:53:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:53:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:55,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:55,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:55,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:53:55,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048496889] [2020-10-12 20:53:55,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:55,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:55,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953698611] [2020-10-12 20:53:55,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:55,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:55,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:55,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:55,378 INFO L87 Difference]: Start difference. First operand 1436 states and 2296 transitions. Second operand 5 states. [2020-10-12 20:53:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:56,220 INFO L93 Difference]: Finished difference Result 3141 states and 5012 transitions. [2020-10-12 20:53:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:56,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:53:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:56,226 INFO L225 Difference]: With dead ends: 3141 [2020-10-12 20:53:56,226 INFO L226 Difference]: Without dead ends: 1742 [2020-10-12 20:53:56,229 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 20:53:56,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2020-10-12 20:53:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1554. [2020-10-12 20:53:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-12 20:53:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2506 transitions. [2020-10-12 20:53:56,271 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2506 transitions. Word has length 108 [2020-10-12 20:53:56,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:56,271 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 2506 transitions. [2020-10-12 20:53:56,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2506 transitions. [2020-10-12 20:53:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:53:56,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:56,274 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:56,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:53:56,274 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:56,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:56,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1202786108, now seen corresponding path program 1 times [2020-10-12 20:53:56,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:56,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819551809] [2020-10-12 20:53:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:56,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:59,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:53:59,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2732 [2020-10-12 20:53:59,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 20:53:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:53:59,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:59,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:59,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:59,088 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 20:53:59,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819551809] [2020-10-12 20:53:59,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:59,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:59,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904028982] [2020-10-12 20:53:59,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:59,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:59,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:59,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:59,090 INFO L87 Difference]: Start difference. First operand 1554 states and 2506 transitions. Second operand 5 states. [2020-10-12 20:54:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:00,034 INFO L93 Difference]: Finished difference Result 3505 states and 5627 transitions. [2020-10-12 20:54:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:00,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:54:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:00,039 INFO L225 Difference]: With dead ends: 3505 [2020-10-12 20:54:00,040 INFO L226 Difference]: Without dead ends: 1988 [2020-10-12 20:54:00,041 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 20:54:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2020-10-12 20:54:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1624. [2020-10-12 20:54:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1624 states. [2020-10-12 20:54:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2624 transitions. [2020-10-12 20:54:00,073 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2624 transitions. Word has length 110 [2020-10-12 20:54:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:00,073 INFO L479 AbstractCegarLoop]: Abstraction has 1624 states and 2624 transitions. [2020-10-12 20:54:00,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2624 transitions. [2020-10-12 20:54:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:54:00,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:00,075 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:00,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:54:00,076 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:00,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1361181648, now seen corresponding path program 1 times [2020-10-12 20:54:00,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:00,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811549320] [2020-10-12 20:54:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:03,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:54:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2996 [2020-10-12 20:54:03,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 20:54:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:54:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:03,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:03,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:03,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:03,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:03,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:03,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:03,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:03,165 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 20:54:03,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811549320] [2020-10-12 20:54:03,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:03,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:03,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607478244] [2020-10-12 20:54:03,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:03,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:03,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:03,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:03,167 INFO L87 Difference]: Start difference. First operand 1624 states and 2624 transitions. Second operand 5 states. [2020-10-12 20:54:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:03,973 INFO L93 Difference]: Finished difference Result 3431 states and 5526 transitions. [2020-10-12 20:54:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:03,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:54:03,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:03,977 INFO L225 Difference]: With dead ends: 3431 [2020-10-12 20:54:03,977 INFO L226 Difference]: Without dead ends: 1844 [2020-10-12 20:54:03,979 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 20:54:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2020-10-12 20:54:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1664. [2020-10-12 20:54:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-10-12 20:54:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2700 transitions. [2020-10-12 20:54:04,009 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2700 transitions. Word has length 111 [2020-10-12 20:54:04,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:04,009 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2700 transitions. [2020-10-12 20:54:04,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2700 transitions. [2020-10-12 20:54:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:54:04,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:04,011 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 20:54:04,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:54:04,011 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:04,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1938808470, now seen corresponding path program 1 times [2020-10-12 20:54:04,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:04,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889709341] [2020-10-12 20:54:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:04,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:07,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:54:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3034 [2020-10-12 20:54:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:54:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 20:54:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:07,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:07,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:07,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:07,320 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 20:54:07,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889709341] [2020-10-12 20:54:07,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:07,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:54:07,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739013180] [2020-10-12 20:54:07,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:54:07,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:54:07,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:54:07,322 INFO L87 Difference]: Start difference. First operand 1664 states and 2700 transitions. Second operand 10 states. [2020-10-12 20:54:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:10,230 INFO L93 Difference]: Finished difference Result 5087 states and 8267 transitions. [2020-10-12 20:54:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:54:10,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 111 [2020-10-12 20:54:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:10,238 INFO L225 Difference]: With dead ends: 5087 [2020-10-12 20:54:10,238 INFO L226 Difference]: Without dead ends: 3460 [2020-10-12 20:54:10,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 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 20:54:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2020-10-12 20:54:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3088. [2020-10-12 20:54:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-12 20:54:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 5102 transitions. [2020-10-12 20:54:10,340 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 5102 transitions. Word has length 111 [2020-10-12 20:54:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:10,341 INFO L479 AbstractCegarLoop]: Abstraction has 3088 states and 5102 transitions. [2020-10-12 20:54:10,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:54:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 5102 transitions. [2020-10-12 20:54:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:54:10,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:10,348 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:10,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:54:10,349 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:10,349 INFO L82 PathProgramCache]: Analyzing trace with hash -33634242, now seen corresponding path program 1 times [2020-10-12 20:54:10,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:10,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359918787] [2020-10-12 20:54:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:54:13,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:13,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3083 [2020-10-12 20:54:13,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:54:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 20:54:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:13,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:13,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:13,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:13,766 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 20:54:13,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359918787] [2020-10-12 20:54:13,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:13,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:54:13,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288302435] [2020-10-12 20:54:13,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:54:13,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:13,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:54:13,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:54:13,770 INFO L87 Difference]: Start difference. First operand 3088 states and 5102 transitions. Second operand 10 states. [2020-10-12 20:54:17,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:17,095 INFO L93 Difference]: Finished difference Result 6978 states and 11346 transitions. [2020-10-12 20:54:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:54:17,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2020-10-12 20:54:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:17,105 INFO L225 Difference]: With dead ends: 6978 [2020-10-12 20:54:17,105 INFO L226 Difference]: Without dead ends: 3925 [2020-10-12 20:54:17,111 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 20:54:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2020-10-12 20:54:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3221. [2020-10-12 20:54:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3221 states. [2020-10-12 20:54:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 5353 transitions. [2020-10-12 20:54:17,217 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 5353 transitions. Word has length 112 [2020-10-12 20:54:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:17,218 INFO L479 AbstractCegarLoop]: Abstraction has 3221 states and 5353 transitions. [2020-10-12 20:54:17,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:54:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 5353 transitions. [2020-10-12 20:54:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:54:17,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:17,224 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:17,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:54:17,224 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:17,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1482815859, now seen corresponding path program 1 times [2020-10-12 20:54:17,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:17,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343259191] [2020-10-12 20:54:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:20,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:22,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:22,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:54:22,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:54:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:54:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 20:54:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 20:54:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:22,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:22,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:22,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:22,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:22,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343259191] [2020-10-12 20:54:22,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:22,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:54:22,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620731208] [2020-10-12 20:54:22,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:54:22,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:54:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:54:22,402 INFO L87 Difference]: Start difference. First operand 3221 states and 5353 transitions. Second operand 8 states. [2020-10-12 20:54:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:24,040 INFO L93 Difference]: Finished difference Result 6811 states and 11201 transitions. [2020-10-12 20:54:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:54:24,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-12 20:54:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:24,049 INFO L225 Difference]: With dead ends: 6811 [2020-10-12 20:54:24,049 INFO L226 Difference]: Without dead ends: 3631 [2020-10-12 20:54:24,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:54:24,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-12 20:54:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3191. [2020-10-12 20:54:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3191 states. [2020-10-12 20:54:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 5295 transitions. [2020-10-12 20:54:24,155 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 5295 transitions. Word has length 113 [2020-10-12 20:54:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:24,156 INFO L479 AbstractCegarLoop]: Abstraction has 3191 states and 5295 transitions. [2020-10-12 20:54:24,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:54:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 5295 transitions. [2020-10-12 20:54:24,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:54:24,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:24,161 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 20:54:24,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:54:24,161 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:24,162 INFO L82 PathProgramCache]: Analyzing trace with hash 854800920, now seen corresponding path program 1 times [2020-10-12 20:54:24,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:24,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400690686] [2020-10-12 20:54:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:29,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:29,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:54:29,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:29,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:54:29,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 20:54:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:29,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:29,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:29,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:29,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400690686] [2020-10-12 20:54:29,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:29,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:29,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806969995] [2020-10-12 20:54:29,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:29,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:29,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:29,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:29,295 INFO L87 Difference]: Start difference. First operand 3191 states and 5295 transitions. Second operand 5 states. [2020-10-12 20:54:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:30,145 INFO L93 Difference]: Finished difference Result 5030 states and 8229 transitions. [2020-10-12 20:54:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:30,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:54:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:30,153 INFO L225 Difference]: With dead ends: 5030 [2020-10-12 20:54:30,153 INFO L226 Difference]: Without dead ends: 3363 [2020-10-12 20:54:30,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2020-10-12 20:54:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3191. [2020-10-12 20:54:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3191 states. [2020-10-12 20:54:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 5287 transitions. [2020-10-12 20:54:30,249 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 5287 transitions. Word has length 119 [2020-10-12 20:54:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:30,250 INFO L479 AbstractCegarLoop]: Abstraction has 3191 states and 5287 transitions. [2020-10-12 20:54:30,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 5287 transitions. [2020-10-12 20:54:30,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:54:30,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:30,255 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:30,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:54:30,255 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:30,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:30,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1523791989, now seen corresponding path program 1 times [2020-10-12 20:54:30,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:30,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737788810] [2020-10-12 20:54:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:30,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:30,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:54:30,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:54:30,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-12 20:54:30,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:54:30,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:30,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:30,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:30,848 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 20:54:30,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737788810] [2020-10-12 20:54:30,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:30,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:30,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144365610] [2020-10-12 20:54:30,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:30,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:30,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:30,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:30,850 INFO L87 Difference]: Start difference. First operand 3191 states and 5287 transitions. Second operand 5 states. [2020-10-12 20:54:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:31,934 INFO L93 Difference]: Finished difference Result 6669 states and 10966 transitions. [2020-10-12 20:54:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:31,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:54:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:31,941 INFO L225 Difference]: With dead ends: 6669 [2020-10-12 20:54:31,941 INFO L226 Difference]: Without dead ends: 3519 [2020-10-12 20:54:31,947 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 20:54:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2020-10-12 20:54:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3191. [2020-10-12 20:54:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3191 states. [2020-10-12 20:54:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 5279 transitions. [2020-10-12 20:54:32,050 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 5279 transitions. Word has length 119 [2020-10-12 20:54:32,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:32,051 INFO L479 AbstractCegarLoop]: Abstraction has 3191 states and 5279 transitions. [2020-10-12 20:54:32,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 5279 transitions. [2020-10-12 20:54:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:54:32,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:32,056 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2020-10-12 20:54:32,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:54:32,056 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash -837598416, now seen corresponding path program 1 times [2020-10-12 20:54:32,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:32,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664637104] [2020-10-12 20:54:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:32,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:35,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:35,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:54:35,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3879 [2020-10-12 20:54:35,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:35,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:54:35,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 20:54:35,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:54:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:36,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:36,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:36,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:36,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:36,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-12 20:54:36,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664637104] [2020-10-12 20:54:36,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:36,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:36,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139691377] [2020-10-12 20:54:36,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:36,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:36,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:36,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:36,033 INFO L87 Difference]: Start difference. First operand 3191 states and 5279 transitions. Second operand 5 states. [2020-10-12 20:54:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:37,051 INFO L93 Difference]: Finished difference Result 6699 states and 10988 transitions. [2020-10-12 20:54:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:37,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:54:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:37,055 INFO L225 Difference]: With dead ends: 6699 [2020-10-12 20:54:37,055 INFO L226 Difference]: Without dead ends: 3537 [2020-10-12 20:54:37,059 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 20:54:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2020-10-12 20:54:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3129. [2020-10-12 20:54:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-12 20:54:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5161 transitions. [2020-10-12 20:54:37,122 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5161 transitions. Word has length 120 [2020-10-12 20:54:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:37,123 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 5161 transitions. [2020-10-12 20:54:37,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5161 transitions. [2020-10-12 20:54:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:54:37,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:37,126 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 20:54:37,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:54:37,126 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1158206152, now seen corresponding path program 1 times [2020-10-12 20:54:37,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:37,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287910886] [2020-10-12 20:54:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:37,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:38,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:54:38,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-12 20:54:38,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:54:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:38,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:38,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:38,655 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 20:54:38,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287910886] [2020-10-12 20:54:38,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:38,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:38,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392085301] [2020-10-12 20:54:38,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:38,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:38,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:38,657 INFO L87 Difference]: Start difference. First operand 3129 states and 5161 transitions. Second operand 5 states. [2020-10-12 20:54:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:39,656 INFO L93 Difference]: Finished difference Result 6545 states and 10714 transitions. [2020-10-12 20:54:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:39,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:54:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:39,661 INFO L225 Difference]: With dead ends: 6545 [2020-10-12 20:54:39,661 INFO L226 Difference]: Without dead ends: 3457 [2020-10-12 20:54:39,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2020-10-12 20:54:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3129. [2020-10-12 20:54:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-12 20:54:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5153 transitions. [2020-10-12 20:54:39,729 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5153 transitions. Word has length 121 [2020-10-12 20:54:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:39,729 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 5153 transitions. [2020-10-12 20:54:39,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5153 transitions. [2020-10-12 20:54:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:54:39,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:39,735 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:39,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:54:39,735 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:39,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:39,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1686090801, now seen corresponding path program 1 times [2020-10-12 20:54:39,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:39,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608316528] [2020-10-12 20:54:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:39,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:54:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:54:44,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 20:54:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:44,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:44,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:44,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:44,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:44,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:54:44,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:44,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:44,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:44,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608316528] [2020-10-12 20:54:44,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:44,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:44,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800741236] [2020-10-12 20:54:44,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:44,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:44,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:44,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:44,854 INFO L87 Difference]: Start difference. First operand 3129 states and 5153 transitions. Second operand 5 states. [2020-10-12 20:54:45,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:45,804 INFO L93 Difference]: Finished difference Result 5034 states and 8175 transitions. [2020-10-12 20:54:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:45,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:54:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:45,809 INFO L225 Difference]: With dead ends: 5034 [2020-10-12 20:54:45,809 INFO L226 Difference]: Without dead ends: 3375 [2020-10-12 20:54:45,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-10-12 20:54:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 3129. [2020-10-12 20:54:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-12 20:54:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5145 transitions. [2020-10-12 20:54:45,874 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5145 transitions. Word has length 122 [2020-10-12 20:54:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:45,874 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 5145 transitions. [2020-10-12 20:54:45,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5145 transitions. [2020-10-12 20:54:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:54:45,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:45,878 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 20:54:45,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:54:45,878 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:45,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:45,878 INFO L82 PathProgramCache]: Analyzing trace with hash -797362834, now seen corresponding path program 1 times [2020-10-12 20:54:45,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:45,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66826510] [2020-10-12 20:54:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:46,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:46,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:54:46,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:46,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-12 20:54:46,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:54:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:47,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:47,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:47,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:47,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:47,022 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 20:54:47,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66826510] [2020-10-12 20:54:47,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:47,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:47,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141930495] [2020-10-12 20:54:47,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:47,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:47,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:47,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:47,024 INFO L87 Difference]: Start difference. First operand 3129 states and 5145 transitions. Second operand 5 states. [2020-10-12 20:54:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:48,035 INFO L93 Difference]: Finished difference Result 6545 states and 10682 transitions. [2020-10-12 20:54:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:48,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:54:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:48,041 INFO L225 Difference]: With dead ends: 6545 [2020-10-12 20:54:48,041 INFO L226 Difference]: Without dead ends: 3457 [2020-10-12 20:54:48,046 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 20:54:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2020-10-12 20:54:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3129. [2020-10-12 20:54:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-12 20:54:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5137 transitions. [2020-10-12 20:54:48,114 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5137 transitions. Word has length 122 [2020-10-12 20:54:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:48,114 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 5137 transitions. [2020-10-12 20:54:48,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5137 transitions. [2020-10-12 20:54:48,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:54:48,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:48,118 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 20:54:48,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:54:48,118 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:48,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:48,118 INFO L82 PathProgramCache]: Analyzing trace with hash 884039928, now seen corresponding path program 1 times [2020-10-12 20:54:48,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:48,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841606705] [2020-10-12 20:54:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:49,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:54:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-12 20:54:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:54:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:49,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:49,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:49,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:49,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:49,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:49,452 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 20:54:49,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841606705] [2020-10-12 20:54:49,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:49,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:49,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591097513] [2020-10-12 20:54:49,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:49,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:49,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:49,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:49,453 INFO L87 Difference]: Start difference. First operand 3129 states and 5137 transitions. Second operand 5 states. [2020-10-12 20:54:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:50,420 INFO L93 Difference]: Finished difference Result 6513 states and 10626 transitions. [2020-10-12 20:54:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:50,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:54:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:50,424 INFO L225 Difference]: With dead ends: 6513 [2020-10-12 20:54:50,425 INFO L226 Difference]: Without dead ends: 3425 [2020-10-12 20:54:50,428 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 20:54:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2020-10-12 20:54:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 3129. [2020-10-12 20:54:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-12 20:54:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5129 transitions. [2020-10-12 20:54:50,495 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5129 transitions. Word has length 122 [2020-10-12 20:54:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:50,496 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 5129 transitions. [2020-10-12 20:54:50,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5129 transitions. [2020-10-12 20:54:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:54:50,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:50,499 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 20:54:50,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:54:50,499 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1448851298, now seen corresponding path program 1 times [2020-10-12 20:54:50,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:50,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165458213] [2020-10-12 20:54:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:50,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:50,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:51,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:54:51,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:51,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-10-12 20:54:51,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:54:51,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:51,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:51,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:51,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:51,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:51,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:54:51,564 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 20:54:51,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165458213] [2020-10-12 20:54:51,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:51,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:51,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102493899] [2020-10-12 20:54:51,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:51,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:51,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:51,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:51,567 INFO L87 Difference]: Start difference. First operand 3129 states and 5129 transitions. Second operand 5 states. [2020-10-12 20:54:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:52,567 INFO L93 Difference]: Finished difference Result 6497 states and 10594 transitions. [2020-10-12 20:54:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:52,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:54:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:52,571 INFO L225 Difference]: With dead ends: 6497 [2020-10-12 20:54:52,571 INFO L226 Difference]: Without dead ends: 3409 [2020-10-12 20:54:52,574 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 20:54:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2020-10-12 20:54:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3129. [2020-10-12 20:54:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-12 20:54:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5121 transitions. [2020-10-12 20:54:52,642 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5121 transitions. Word has length 123 [2020-10-12 20:54:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:52,642 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 5121 transitions. [2020-10-12 20:54:52,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5121 transitions. [2020-10-12 20:54:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:54:52,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:52,646 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:54:52,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:54:52,646 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:52,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:52,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1102619870, now seen corresponding path program 1 times [2020-10-12 20:54:52,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:52,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144878982] [2020-10-12 20:54:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:52,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:52,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:52,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:57,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:54:57,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:54:57,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:54:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 20:54:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:54:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:57,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:57,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:57,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:57,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:57,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:54:57,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144878982] [2020-10-12 20:54:57,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:57,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:57,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489845173] [2020-10-12 20:54:57,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:57,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:57,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:57,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:57,767 INFO L87 Difference]: Start difference. First operand 3129 states and 5121 transitions. Second operand 5 states. [2020-10-12 20:54:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:58,737 INFO L93 Difference]: Finished difference Result 5022 states and 8115 transitions. [2020-10-12 20:54:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:58,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:54:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:58,741 INFO L225 Difference]: With dead ends: 5022 [2020-10-12 20:54:58,742 INFO L226 Difference]: Without dead ends: 3363 [2020-10-12 20:54:58,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:54:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2020-10-12 20:54:58,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3129. [2020-10-12 20:54:58,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-12 20:54:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5113 transitions. [2020-10-12 20:54:58,819 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5113 transitions. Word has length 124 [2020-10-12 20:54:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:58,819 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 5113 transitions. [2020-10-12 20:54:58,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:58,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5113 transitions. [2020-10-12 20:54:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:54:58,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:58,823 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 20:54:58,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:54:58,823 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:58,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1023944041, now seen corresponding path program 1 times [2020-10-12 20:54:58,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:58,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515628234] [2020-10-12 20:54:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:59,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:54:59,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-12 20:54:59,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:54:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:54:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:59,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:59,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:59,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:59,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:54:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:59,977 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 20:54:59,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515628234] [2020-10-12 20:54:59,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:59,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:59,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610653904] [2020-10-12 20:54:59,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:59,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:59,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:59,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:59,979 INFO L87 Difference]: Start difference. First operand 3129 states and 5113 transitions. Second operand 5 states. [2020-10-12 20:55:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:00,960 INFO L93 Difference]: Finished difference Result 6497 states and 10562 transitions. [2020-10-12 20:55:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:00,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 20:55:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:00,964 INFO L225 Difference]: With dead ends: 6497 [2020-10-12 20:55:00,965 INFO L226 Difference]: Without dead ends: 3409 [2020-10-12 20:55:00,968 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 20:55:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2020-10-12 20:55:01,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3129. [2020-10-12 20:55:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-12 20:55:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5105 transitions. [2020-10-12 20:55:01,033 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5105 transitions. Word has length 124 [2020-10-12 20:55:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:01,033 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 5105 transitions. [2020-10-12 20:55:01,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5105 transitions. [2020-10-12 20:55:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:01,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:01,037 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:01,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:55:01,037 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:01,038 INFO L82 PathProgramCache]: Analyzing trace with hash 551434972, now seen corresponding path program 1 times [2020-10-12 20:55:01,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:01,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053678162] [2020-10-12 20:55:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:01,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:06,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:06,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:55:06,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:55:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 20:55:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:06,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:06,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:06,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 20:55:06,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053678162] [2020-10-12 20:55:06,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:06,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:55:06,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877277195] [2020-10-12 20:55:06,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:55:06,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:06,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:55:06,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:55:06,421 INFO L87 Difference]: Start difference. First operand 3129 states and 5105 transitions. Second operand 11 states. [2020-10-12 20:55:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:09,676 INFO L93 Difference]: Finished difference Result 6401 states and 10264 transitions. [2020-10-12 20:55:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:55:09,676 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 125 [2020-10-12 20:55:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:09,682 INFO L225 Difference]: With dead ends: 6401 [2020-10-12 20:55:09,682 INFO L226 Difference]: Without dead ends: 4782 [2020-10-12 20:55:09,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:55:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4782 states. [2020-10-12 20:55:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4782 to 3948. [2020-10-12 20:55:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2020-10-12 20:55:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6506 transitions. [2020-10-12 20:55:09,770 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6506 transitions. Word has length 125 [2020-10-12 20:55:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:09,771 INFO L479 AbstractCegarLoop]: Abstraction has 3948 states and 6506 transitions. [2020-10-12 20:55:09,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:55:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6506 transitions. [2020-10-12 20:55:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:09,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:09,775 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:09,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:55:09,776 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:09,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1595756172, now seen corresponding path program 1 times [2020-10-12 20:55:09,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:09,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569485653] [2020-10-12 20:55:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:14,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:14,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:14,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:14,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 20:55:14,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:55:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:55:14,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:15,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:15,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:15,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:55:15,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:15,266 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 20:55:15,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569485653] [2020-10-12 20:55:15,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:15,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:55:15,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906099075] [2020-10-12 20:55:15,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:55:15,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:15,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:55:15,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:55:15,273 INFO L87 Difference]: Start difference. First operand 3948 states and 6506 transitions. Second operand 10 states. [2020-10-12 20:55:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:18,695 INFO L93 Difference]: Finished difference Result 6748 states and 11007 transitions. [2020-10-12 20:55:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:55:18,696 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2020-10-12 20:55:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:18,702 INFO L225 Difference]: With dead ends: 6748 [2020-10-12 20:55:18,702 INFO L226 Difference]: Without dead ends: 4290 [2020-10-12 20:55:18,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:55:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4290 states. [2020-10-12 20:55:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4290 to 3948. [2020-10-12 20:55:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2020-10-12 20:55:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6504 transitions. [2020-10-12 20:55:18,788 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6504 transitions. Word has length 125 [2020-10-12 20:55:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:18,788 INFO L479 AbstractCegarLoop]: Abstraction has 3948 states and 6504 transitions. [2020-10-12 20:55:18,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:55:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6504 transitions. [2020-10-12 20:55:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:55:18,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:18,793 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 20:55:18,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:55:18,793 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:18,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1266485241, now seen corresponding path program 1 times [2020-10-12 20:55:18,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:18,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236859797] [2020-10-12 20:55:18,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:18,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:19,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:55:19,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-12 20:55:19,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:55:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:19,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:19,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:19,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:19,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:19,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:19,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:20,016 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 20:55:20,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236859797] [2020-10-12 20:55:20,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:20,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:20,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032856638] [2020-10-12 20:55:20,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:20,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:20,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:20,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:20,018 INFO L87 Difference]: Start difference. First operand 3948 states and 6504 transitions. Second operand 5 states. [2020-10-12 20:55:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:21,085 INFO L93 Difference]: Finished difference Result 8167 states and 13400 transitions. [2020-10-12 20:55:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:21,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 20:55:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:21,090 INFO L225 Difference]: With dead ends: 8167 [2020-10-12 20:55:21,090 INFO L226 Difference]: Without dead ends: 4260 [2020-10-12 20:55:21,095 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 20:55:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2020-10-12 20:55:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 3948. [2020-10-12 20:55:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2020-10-12 20:55:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6494 transitions. [2020-10-12 20:55:21,177 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6494 transitions. Word has length 125 [2020-10-12 20:55:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:21,177 INFO L479 AbstractCegarLoop]: Abstraction has 3948 states and 6494 transitions. [2020-10-12 20:55:21,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6494 transitions. [2020-10-12 20:55:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:55:21,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:21,182 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:21,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:55:21,182 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:21,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:21,182 INFO L82 PathProgramCache]: Analyzing trace with hash -92539720, now seen corresponding path program 1 times [2020-10-12 20:55:21,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:21,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916992662] [2020-10-12 20:55:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:26,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:55:26,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:55:26,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:55:26,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:26,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 20:55:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:26,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:26,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:26,664 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 20:55:26,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916992662] [2020-10-12 20:55:26,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:26,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:55:26,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323273978] [2020-10-12 20:55:26,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:55:26,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:26,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:55:26,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:55:26,666 INFO L87 Difference]: Start difference. First operand 3948 states and 6494 transitions. Second operand 11 states. [2020-10-12 20:55:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:29,525 INFO L93 Difference]: Finished difference Result 8685 states and 14214 transitions. [2020-10-12 20:55:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:55:29,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 126 [2020-10-12 20:55:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:29,531 INFO L225 Difference]: With dead ends: 8685 [2020-10-12 20:55:29,532 INFO L226 Difference]: Without dead ends: 4778 [2020-10-12 20:55:29,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:55:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2020-10-12 20:55:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 3999. [2020-10-12 20:55:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3999 states. [2020-10-12 20:55:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 6528 transitions. [2020-10-12 20:55:29,626 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 6528 transitions. Word has length 126 [2020-10-12 20:55:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:29,626 INFO L479 AbstractCegarLoop]: Abstraction has 3999 states and 6528 transitions. [2020-10-12 20:55:29,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:55:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 6528 transitions. [2020-10-12 20:55:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:55:29,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:29,630 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:29,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:55:29,630 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1001120469, now seen corresponding path program 1 times [2020-10-12 20:55:29,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:29,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892125875] [2020-10-12 20:55:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:29,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:34,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:55:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:55:34,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:55:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 20:55:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:34,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:34,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:34,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:34,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:34,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:34,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:55:34,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892125875] [2020-10-12 20:55:34,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:34,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:34,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776813662] [2020-10-12 20:55:34,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:34,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:34,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:34,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:34,795 INFO L87 Difference]: Start difference. First operand 3999 states and 6528 transitions. Second operand 5 states.