/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.10.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:03:56,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:03:56,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:03:56,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:03:56,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:03:56,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:03:56,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:03:56,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:03:56,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:03:56,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:03:56,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:03:56,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:03:56,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:03:56,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:03:56,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:03:56,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:03:56,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:03:56,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:03:56,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:03:56,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:03:56,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:03:56,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:03:56,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:03:56,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:03:56,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:03:56,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:03:56,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:03:56,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:03:56,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:03:56,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:03:56,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:03:56,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:03:56,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:03:56,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:03:56,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:03:56,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:03:56,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:03:56,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:03:56,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:03:56,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:03:56,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:03:56,438 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 [2020-10-14 10:03:56,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:03:56,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:03:56,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:03:56,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:03:56,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:03:56,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:03:56,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:03:56,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:03:56,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:03:56,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:03:56,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:03:56,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:03:56,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:03:56,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:03:56,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:03:56,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:03:56,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:03:56,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:03:56,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:03:56,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:03:56,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:03:56,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:03:56,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:03:56,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:03:56,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:03:56,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:03:56,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:03:56,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:03:56,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:03:56,487 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:03:56,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:03:56,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:03:56,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:03:56,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:03:56,850 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:03:56,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.10.i.cil-2.c [2020-10-14 10:03:56,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e820cd4f/a7433e1513ee4900ab69f0c8215fe08d/FLAG6d0c51c70 [2020-10-14 10:03:57,489 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:03:57,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.10.i.cil-2.c [2020-10-14 10:03:57,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e820cd4f/a7433e1513ee4900ab69f0c8215fe08d/FLAG6d0c51c70 [2020-10-14 10:03:57,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e820cd4f/a7433e1513ee4900ab69f0c8215fe08d [2020-10-14 10:03:57,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:03:57,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:03:57,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:03:57,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:03:57,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:03:57,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:57" (1/1) ... [2020-10-14 10:03:57,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f77297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:57, skipping insertion in model container [2020-10-14 10:03:57,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:57" (1/1) ... [2020-10-14 10:03:57,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:03:58,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:03:58,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:03:58,704 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:03:58,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:03:58,868 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:03:58,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58 WrapperNode [2020-10-14 10:03:58,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:03:58,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:03:58,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:03:58,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:03:58,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:58,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:58,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:58,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:58,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:59,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:59,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (1/1) ... [2020-10-14 10:03:59,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:03:59,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:03:59,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:03:59,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:03:59,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (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 [2020-10-14 10:03:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:03:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:03:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:03:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:03:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:03:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:03:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:03:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:03:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:03:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:03:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:03:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:03:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:03:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:03:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:03:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:03:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:03:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:03:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:03:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:03:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:03:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:03:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:03:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:03:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:03:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:03:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:03:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:03:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:03:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:03:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:03:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:03:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:03:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:03:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:03:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:03:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:03:59,598 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:04:00,284 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:04:00,284 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:04:00,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:04:00,308 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:04:00,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:00 BoogieIcfgContainer [2020-10-14 10:04:00,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:04:00,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:04:00,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:04:00,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:04:00,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:57" (1/3) ... [2020-10-14 10:04:00,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fad0ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:00, skipping insertion in model container [2020-10-14 10:04:00,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:58" (2/3) ... [2020-10-14 10:04:00,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fad0ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:00, skipping insertion in model container [2020-10-14 10:04:00,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:00" (3/3) ... [2020-10-14 10:04:00,321 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-2.c [2020-10-14 10:04:00,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:04:00,340 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:04:00,354 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:04:00,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:04:00,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:04:00,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:04:00,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:04:00,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:04:00,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:04:00,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:04:00,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:04:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-14 10:04:00,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 10:04:00,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:00,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:00,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:00,422 INFO L82 PathProgramCache]: Analyzing trace with hash 164626311, now seen corresponding path program 1 times [2020-10-14 10:04:00,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:00,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119458760] [2020-10-14 10:04:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:01,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 10:04:01,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:01,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-14 10:04:01,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:01,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:01,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:01,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:01,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:04:01,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:04:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:01,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:01,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:01,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:04:01,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:01,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:01,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:01,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:01,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:01,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119458760] [2020-10-14 10:04:01,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:01,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:01,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134244998] [2020-10-14 10:04:01,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:01,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:01,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:01,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:01,912 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 5 states. [2020-10-14 10:04:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:03,205 INFO L93 Difference]: Finished difference Result 399 states and 670 transitions. [2020-10-14 10:04:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:03,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-14 10:04:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:03,236 INFO L225 Difference]: With dead ends: 399 [2020-10-14 10:04:03,237 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 10:04:03,243 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 [2020-10-14 10:04:03,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 10:04:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 169. [2020-10-14 10:04:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 10:04:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 266 transitions. [2020-10-14 10:04:03,303 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 266 transitions. Word has length 47 [2020-10-14 10:04:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:03,304 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 266 transitions. [2020-10-14 10:04:03,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 266 transitions. [2020-10-14 10:04:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 10:04:03,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:03,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:03,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:04:03,308 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash 801945557, now seen corresponding path program 1 times [2020-10-14 10:04:03,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:03,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573564502] [2020-10-14 10:04:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:03,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:03,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 10:04:03,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-14 10:04:03,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:03,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:04:03,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:03,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:04:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:03,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:04,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573564502] [2020-10-14 10:04:04,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:04,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:04,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290818043] [2020-10-14 10:04:04,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:04,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:04,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:04,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:04,036 INFO L87 Difference]: Start difference. First operand 169 states and 266 transitions. Second operand 5 states. [2020-10-14 10:04:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:04,954 INFO L93 Difference]: Finished difference Result 351 states and 535 transitions. [2020-10-14 10:04:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:04,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-14 10:04:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:04,958 INFO L225 Difference]: With dead ends: 351 [2020-10-14 10:04:04,958 INFO L226 Difference]: Without dead ends: 227 [2020-10-14 10:04:04,964 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 [2020-10-14 10:04:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-14 10:04:04,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 170. [2020-10-14 10:04:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 10:04:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 267 transitions. [2020-10-14 10:04:04,997 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 267 transitions. Word has length 48 [2020-10-14 10:04:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:04,997 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 267 transitions. [2020-10-14 10:04:04,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 267 transitions. [2020-10-14 10:04:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 10:04:05,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:05,003 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] [2020-10-14 10:04:05,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:04:05,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:05,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:05,004 INFO L82 PathProgramCache]: Analyzing trace with hash 899947951, now seen corresponding path program 1 times [2020-10-14 10:04:05,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:05,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978913446] [2020-10-14 10:04:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:06,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:06,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 10:04:06,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:06,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-10-14 10:04:06,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:06,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 10:04:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:06,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:06,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:06,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:06,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:04:06,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:06,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:06,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978913446] [2020-10-14 10:04:06,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:06,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:06,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091612395] [2020-10-14 10:04:06,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:06,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:06,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:06,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:06,278 INFO L87 Difference]: Start difference. First operand 170 states and 267 transitions. Second operand 5 states. [2020-10-14 10:04:07,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:07,326 INFO L93 Difference]: Finished difference Result 397 states and 616 transitions. [2020-10-14 10:04:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:07,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-14 10:04:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:07,329 INFO L225 Difference]: With dead ends: 397 [2020-10-14 10:04:07,329 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 10:04:07,334 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 [2020-10-14 10:04:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 10:04:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 209. [2020-10-14 10:04:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-14 10:04:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 339 transitions. [2020-10-14 10:04:07,371 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 339 transitions. Word has length 60 [2020-10-14 10:04:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:07,372 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 339 transitions. [2020-10-14 10:04:07,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 339 transitions. [2020-10-14 10:04:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 10:04:07,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:07,381 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] [2020-10-14 10:04:07,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:04:07,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1650828211, now seen corresponding path program 1 times [2020-10-14 10:04:07,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:07,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276215068] [2020-10-14 10:04:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:12,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 10:04:12,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4705 [2020-10-14 10:04:12,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:12,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:04:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:12,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:12,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:12,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:12,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:12,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:12,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:12,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:12,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276215068] [2020-10-14 10:04:12,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:12,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:12,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078460082] [2020-10-14 10:04:12,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:12,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:12,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:12,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:12,280 INFO L87 Difference]: Start difference. First operand 209 states and 339 transitions. Second operand 5 states. [2020-10-14 10:04:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:13,252 INFO L93 Difference]: Finished difference Result 475 states and 760 transitions. [2020-10-14 10:04:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:13,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-14 10:04:13,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:13,259 INFO L225 Difference]: With dead ends: 475 [2020-10-14 10:04:13,259 INFO L226 Difference]: Without dead ends: 312 [2020-10-14 10:04:13,262 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 [2020-10-14 10:04:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-14 10:04:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 209. [2020-10-14 10:04:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-14 10:04:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 339 transitions. [2020-10-14 10:04:13,284 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 339 transitions. Word has length 61 [2020-10-14 10:04:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:13,284 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 339 transitions. [2020-10-14 10:04:13,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 339 transitions. [2020-10-14 10:04:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 10:04:13,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:13,287 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] [2020-10-14 10:04:13,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:04:13,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:13,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2122079917, now seen corresponding path program 1 times [2020-10-14 10:04:13,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:13,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754555476] [2020-10-14 10:04:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:13,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:14,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:14,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 10:04:14,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:14,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-14 10:04:14,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:14,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 10:04:14,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:14,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:14,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:14,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:14,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:14,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:14,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:14,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:14,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:14,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:14,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:14,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:14,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:14,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754555476] [2020-10-14 10:04:14,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:14,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:14,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66621404] [2020-10-14 10:04:14,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:14,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:14,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:14,242 INFO L87 Difference]: Start difference. First operand 209 states and 339 transitions. Second operand 5 states. [2020-10-14 10:04:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:15,143 INFO L93 Difference]: Finished difference Result 469 states and 752 transitions. [2020-10-14 10:04:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:15,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-14 10:04:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:15,150 INFO L225 Difference]: With dead ends: 469 [2020-10-14 10:04:15,150 INFO L226 Difference]: Without dead ends: 306 [2020-10-14 10:04:15,152 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 [2020-10-14 10:04:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-14 10:04:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 217. [2020-10-14 10:04:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-14 10:04:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 352 transitions. [2020-10-14 10:04:15,170 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 352 transitions. Word has length 61 [2020-10-14 10:04:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:15,171 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 352 transitions. [2020-10-14 10:04:15,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:15,174 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 352 transitions. [2020-10-14 10:04:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 10:04:15,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:15,177 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] [2020-10-14 10:04:15,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:04:15,177 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:15,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:15,179 INFO L82 PathProgramCache]: Analyzing trace with hash -720089219, now seen corresponding path program 1 times [2020-10-14 10:04:15,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:15,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723648619] [2020-10-14 10:04:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:15,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 10:04:15,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 10:04:15,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:15,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:04:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:15,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:15,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:15,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:15,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:15,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:15,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:15,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:15,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:15,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723648619] [2020-10-14 10:04:15,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:15,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:15,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998722341] [2020-10-14 10:04:15,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:15,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:15,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:15,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:15,696 INFO L87 Difference]: Start difference. First operand 217 states and 352 transitions. Second operand 5 states. [2020-10-14 10:04:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:16,697 INFO L93 Difference]: Finished difference Result 524 states and 847 transitions. [2020-10-14 10:04:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:16,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-14 10:04:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:16,701 INFO L225 Difference]: With dead ends: 524 [2020-10-14 10:04:16,701 INFO L226 Difference]: Without dead ends: 321 [2020-10-14 10:04:16,702 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 [2020-10-14 10:04:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-14 10:04:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 218. [2020-10-14 10:04:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-14 10:04:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 353 transitions. [2020-10-14 10:04:16,712 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 353 transitions. Word has length 61 [2020-10-14 10:04:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:16,712 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 353 transitions. [2020-10-14 10:04:16,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 353 transitions. [2020-10-14 10:04:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 10:04:16,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:16,714 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] [2020-10-14 10:04:16,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:04:16,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash -370435799, now seen corresponding path program 1 times [2020-10-14 10:04:16,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:16,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303214995] [2020-10-14 10:04:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:16,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:16,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:18,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:20,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:20,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 10:04:20,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3860 [2020-10-14 10:04:20,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:20,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:20,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:20,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:04:20,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:20,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:20,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:20,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:20,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:20,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303214995] [2020-10-14 10:04:20,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:20,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:20,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995393666] [2020-10-14 10:04:20,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:20,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:20,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:20,688 INFO L87 Difference]: Start difference. First operand 218 states and 353 transitions. Second operand 5 states. [2020-10-14 10:04:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:21,592 INFO L93 Difference]: Finished difference Result 519 states and 840 transitions. [2020-10-14 10:04:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:21,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-14 10:04:21,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:21,598 INFO L225 Difference]: With dead ends: 519 [2020-10-14 10:04:21,598 INFO L226 Difference]: Without dead ends: 315 [2020-10-14 10:04:21,599 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 [2020-10-14 10:04:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-14 10:04:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 218. [2020-10-14 10:04:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-14 10:04:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 353 transitions. [2020-10-14 10:04:21,608 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 353 transitions. Word has length 62 [2020-10-14 10:04:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:21,608 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 353 transitions. [2020-10-14 10:04:21,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 353 transitions. [2020-10-14 10:04:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 10:04:21,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:21,610 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] [2020-10-14 10:04:21,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:04:21,611 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:21,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2125508610, now seen corresponding path program 1 times [2020-10-14 10:04:21,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:21,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588866156] [2020-10-14 10:04:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:21,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:21,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:21,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:26,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:26,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 10:04:26,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:04:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 10:04:26,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:26,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:04:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:26,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:26,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:26,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:26,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:26,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:26,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588866156] [2020-10-14 10:04:26,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:26,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:26,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107808456] [2020-10-14 10:04:26,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:26,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:26,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:26,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:26,767 INFO L87 Difference]: Start difference. First operand 218 states and 353 transitions. Second operand 5 states. [2020-10-14 10:04:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:27,575 INFO L93 Difference]: Finished difference Result 578 states and 941 transitions. [2020-10-14 10:04:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:27,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-14 10:04:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:27,580 INFO L225 Difference]: With dead ends: 578 [2020-10-14 10:04:27,580 INFO L226 Difference]: Without dead ends: 374 [2020-10-14 10:04:27,581 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 [2020-10-14 10:04:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-10-14 10:04:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 219. [2020-10-14 10:04:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 10:04:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 354 transitions. [2020-10-14 10:04:27,597 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 354 transitions. Word has length 62 [2020-10-14 10:04:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:27,597 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 354 transitions. [2020-10-14 10:04:27,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 354 transitions. [2020-10-14 10:04:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 10:04:27,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:27,600 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] [2020-10-14 10:04:27,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:04:27,601 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:27,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:27,601 INFO L82 PathProgramCache]: Analyzing trace with hash -854432097, now seen corresponding path program 1 times [2020-10-14 10:04:27,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:27,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821339409] [2020-10-14 10:04:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:27,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:27,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:27,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 10:04:27,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 10:04:27,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:27,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:04:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:28,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:28,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:28,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:28,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:28,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821339409] [2020-10-14 10:04:28,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:28,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:28,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532408262] [2020-10-14 10:04:28,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:28,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:28,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:28,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:28,044 INFO L87 Difference]: Start difference. First operand 219 states and 354 transitions. Second operand 5 states. [2020-10-14 10:04:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:29,275 INFO L93 Difference]: Finished difference Result 521 states and 842 transitions. [2020-10-14 10:04:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:29,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-14 10:04:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:29,278 INFO L225 Difference]: With dead ends: 521 [2020-10-14 10:04:29,279 INFO L226 Difference]: Without dead ends: 316 [2020-10-14 10:04:29,280 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 [2020-10-14 10:04:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-14 10:04:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 219. [2020-10-14 10:04:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 10:04:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 354 transitions. [2020-10-14 10:04:29,289 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 354 transitions. Word has length 62 [2020-10-14 10:04:29,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:29,289 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 354 transitions. [2020-10-14 10:04:29,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:29,290 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 354 transitions. [2020-10-14 10:04:29,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 10:04:29,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:29,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:29,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:04:29,292 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:29,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:29,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1472760258, now seen corresponding path program 1 times [2020-10-14 10:04:29,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:29,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886460984] [2020-10-14 10:04:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:29,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:34,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:34,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 10:04:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:04:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:04:34,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:34,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:04:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:34,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:34,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:34,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:34,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:34,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:34,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:34,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886460984] [2020-10-14 10:04:34,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:34,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:34,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376548029] [2020-10-14 10:04:34,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:34,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:34,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:34,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:34,412 INFO L87 Difference]: Start difference. First operand 219 states and 354 transitions. Second operand 5 states. [2020-10-14 10:04:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:35,393 INFO L93 Difference]: Finished difference Result 539 states and 869 transitions. [2020-10-14 10:04:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:35,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-14 10:04:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:35,396 INFO L225 Difference]: With dead ends: 539 [2020-10-14 10:04:35,396 INFO L226 Difference]: Without dead ends: 334 [2020-10-14 10:04:35,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-14 10:04:35,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 219. [2020-10-14 10:04:35,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 10:04:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2020-10-14 10:04:35,409 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 63 [2020-10-14 10:04:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:35,409 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2020-10-14 10:04:35,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2020-10-14 10:04:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:04:35,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:35,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:35,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:04:35,412 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:35,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:35,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1828893178, now seen corresponding path program 1 times [2020-10-14 10:04:35,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:35,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048771352] [2020-10-14 10:04:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:35,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 10:04:35,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 10:04:35,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:35,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:04:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:35,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:35,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:35,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:35,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:35,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:35,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:35,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:35,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:35,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:35,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048771352] [2020-10-14 10:04:35,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:35,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:35,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178739792] [2020-10-14 10:04:35,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:35,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:35,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:35,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:35,698 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand 5 states. [2020-10-14 10:04:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:36,702 INFO L93 Difference]: Finished difference Result 521 states and 844 transitions. [2020-10-14 10:04:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:36,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-14 10:04:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:36,706 INFO L225 Difference]: With dead ends: 521 [2020-10-14 10:04:36,706 INFO L226 Difference]: Without dead ends: 316 [2020-10-14 10:04:36,707 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 [2020-10-14 10:04:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-14 10:04:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 219. [2020-10-14 10:04:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 10:04:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2020-10-14 10:04:36,716 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 64 [2020-10-14 10:04:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:36,716 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2020-10-14 10:04:36,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:36,716 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2020-10-14 10:04:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 10:04:36,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:36,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:36,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:04:36,718 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:36,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:36,718 INFO L82 PathProgramCache]: Analyzing trace with hash -754301780, now seen corresponding path program 1 times [2020-10-14 10:04:36,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:36,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534339186] [2020-10-14 10:04:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:37,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:37,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 10:04:37,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-14 10:04:37,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:37,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:04:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:37,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:37,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:37,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:37,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:37,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534339186] [2020-10-14 10:04:37,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:37,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:37,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967030263] [2020-10-14 10:04:37,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:37,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:37,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:37,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:37,560 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand 4 states. [2020-10-14 10:04:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:38,004 INFO L93 Difference]: Finished difference Result 625 states and 1026 transitions. [2020-10-14 10:04:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:38,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 10:04:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:38,007 INFO L225 Difference]: With dead ends: 625 [2020-10-14 10:04:38,007 INFO L226 Difference]: Without dead ends: 420 [2020-10-14 10:04:38,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-14 10:04:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2020-10-14 10:04:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-14 10:04:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 681 transitions. [2020-10-14 10:04:38,021 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 681 transitions. Word has length 69 [2020-10-14 10:04:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:38,021 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 681 transitions. [2020-10-14 10:04:38,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 681 transitions. [2020-10-14 10:04:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 10:04:38,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:38,023 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:38,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:04:38,024 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:38,024 INFO L82 PathProgramCache]: Analyzing trace with hash -330655058, now seen corresponding path program 1 times [2020-10-14 10:04:38,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:38,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693958706] [2020-10-14 10:04:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:38,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:38,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 10:04:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-14 10:04:38,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:38,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:04:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:38,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:38,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:38,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:38,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:38,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:38,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:38,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693958706] [2020-10-14 10:04:38,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:38,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:38,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173247751] [2020-10-14 10:04:38,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:38,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:38,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:38,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:38,696 INFO L87 Difference]: Start difference. First operand 418 states and 681 transitions. Second operand 5 states. [2020-10-14 10:04:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:39,706 INFO L93 Difference]: Finished difference Result 821 states and 1322 transitions. [2020-10-14 10:04:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:39,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 10:04:39,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:39,712 INFO L225 Difference]: With dead ends: 821 [2020-10-14 10:04:39,712 INFO L226 Difference]: Without dead ends: 614 [2020-10-14 10:04:39,713 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 [2020-10-14 10:04:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-10-14 10:04:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 419. [2020-10-14 10:04:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-14 10:04:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 682 transitions. [2020-10-14 10:04:39,729 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 682 transitions. Word has length 69 [2020-10-14 10:04:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:39,729 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 682 transitions. [2020-10-14 10:04:39,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 682 transitions. [2020-10-14 10:04:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 10:04:39,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:39,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:39,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:04:39,732 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:39,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:39,732 INFO L82 PathProgramCache]: Analyzing trace with hash 2118945072, now seen corresponding path program 1 times [2020-10-14 10:04:39,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:39,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590540652] [2020-10-14 10:04:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:39,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:41,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:41,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 10:04:41,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-14 10:04:41,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:41,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:04:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:04:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:41,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:41,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:41,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:41,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:41,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:41,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:41,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:41,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590540652] [2020-10-14 10:04:41,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:41,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:41,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170479240] [2020-10-14 10:04:41,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:41,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:41,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:41,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:41,226 INFO L87 Difference]: Start difference. First operand 419 states and 682 transitions. Second operand 5 states. [2020-10-14 10:04:42,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:42,212 INFO L93 Difference]: Finished difference Result 820 states and 1321 transitions. [2020-10-14 10:04:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:42,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 10:04:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:42,216 INFO L225 Difference]: With dead ends: 820 [2020-10-14 10:04:42,216 INFO L226 Difference]: Without dead ends: 613 [2020-10-14 10:04:42,218 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 [2020-10-14 10:04:42,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-10-14 10:04:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 417. [2020-10-14 10:04:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-14 10:04:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 680 transitions. [2020-10-14 10:04:42,233 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 680 transitions. Word has length 69 [2020-10-14 10:04:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:42,234 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 680 transitions. [2020-10-14 10:04:42,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 680 transitions. [2020-10-14 10:04:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 10:04:42,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:42,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:42,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:04:42,236 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:42,236 INFO L82 PathProgramCache]: Analyzing trace with hash -715815616, now seen corresponding path program 1 times [2020-10-14 10:04:42,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:42,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194804509] [2020-10-14 10:04:42,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:43,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:43,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 10:04:43,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-14 10:04:43,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:43,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 10:04:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:43,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:43,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:43,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:43,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:43,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:43,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194804509] [2020-10-14 10:04:43,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:43,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:43,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361818206] [2020-10-14 10:04:43,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:43,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:43,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:43,336 INFO L87 Difference]: Start difference. First operand 417 states and 680 transitions. Second operand 5 states. [2020-10-14 10:04:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:44,307 INFO L93 Difference]: Finished difference Result 817 states and 1318 transitions. [2020-10-14 10:04:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:44,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 10:04:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:44,311 INFO L225 Difference]: With dead ends: 817 [2020-10-14 10:04:44,311 INFO L226 Difference]: Without dead ends: 611 [2020-10-14 10:04:44,315 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 [2020-10-14 10:04:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-14 10:04:44,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 417. [2020-10-14 10:04:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-14 10:04:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 680 transitions. [2020-10-14 10:04:44,332 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 680 transitions. Word has length 69 [2020-10-14 10:04:44,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:44,332 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 680 transitions. [2020-10-14 10:04:44,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 680 transitions. [2020-10-14 10:04:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 10:04:44,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:44,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:44,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:04:44,334 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:44,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1755438, now seen corresponding path program 1 times [2020-10-14 10:04:44,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:44,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160562756] [2020-10-14 10:04:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:44,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:44,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:45,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:45,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 10:04:45,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-14 10:04:45,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:45,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 10:04:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:46,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:46,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:46,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:46,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:46,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:46,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160562756] [2020-10-14 10:04:46,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:46,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:46,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46153082] [2020-10-14 10:04:46,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:46,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:46,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:46,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:46,108 INFO L87 Difference]: Start difference. First operand 417 states and 680 transitions. Second operand 5 states. [2020-10-14 10:04:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:47,096 INFO L93 Difference]: Finished difference Result 817 states and 1318 transitions. [2020-10-14 10:04:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:47,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 10:04:47,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:47,100 INFO L225 Difference]: With dead ends: 817 [2020-10-14 10:04:47,101 INFO L226 Difference]: Without dead ends: 611 [2020-10-14 10:04:47,102 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 [2020-10-14 10:04:47,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-14 10:04:47,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 417. [2020-10-14 10:04:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-14 10:04:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 680 transitions. [2020-10-14 10:04:47,118 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 680 transitions. Word has length 72 [2020-10-14 10:04:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:47,118 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 680 transitions. [2020-10-14 10:04:47,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 680 transitions. [2020-10-14 10:04:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 10:04:47,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:47,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:47,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:04:47,121 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1905984651, now seen corresponding path program 1 times [2020-10-14 10:04:47,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:47,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530938150] [2020-10-14 10:04:47,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:47,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:47,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:48,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 10:04:48,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1279 [2020-10-14 10:04:48,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:48,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:48,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 10:04:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:48,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:48,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:48,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:48,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:48,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530938150] [2020-10-14 10:04:48,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:48,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:48,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388577124] [2020-10-14 10:04:48,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:48,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:48,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:48,496 INFO L87 Difference]: Start difference. First operand 417 states and 680 transitions. Second operand 5 states. [2020-10-14 10:04:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:49,436 INFO L93 Difference]: Finished difference Result 817 states and 1318 transitions. [2020-10-14 10:04:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:49,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-14 10:04:49,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:49,440 INFO L225 Difference]: With dead ends: 817 [2020-10-14 10:04:49,440 INFO L226 Difference]: Without dead ends: 611 [2020-10-14 10:04:49,441 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 [2020-10-14 10:04:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-14 10:04:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 417. [2020-10-14 10:04:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-14 10:04:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 680 transitions. [2020-10-14 10:04:49,457 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 680 transitions. Word has length 75 [2020-10-14 10:04:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:49,457 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 680 transitions. [2020-10-14 10:04:49,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 680 transitions. [2020-10-14 10:04:49,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 10:04:49,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:49,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:49,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:04:49,460 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:49,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1184177866, now seen corresponding path program 1 times [2020-10-14 10:04:49,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:49,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616340972] [2020-10-14 10:04:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:49,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 10:04:49,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 10:04:49,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:49,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:04:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:04:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:49,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:49,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:49,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:49,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:49,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:49,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616340972] [2020-10-14 10:04:49,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:49,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:49,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83478102] [2020-10-14 10:04:49,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:49,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:49,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:49,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:49,820 INFO L87 Difference]: Start difference. First operand 417 states and 680 transitions. Second operand 5 states. [2020-10-14 10:04:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:50,612 INFO L93 Difference]: Finished difference Result 907 states and 1474 transitions. [2020-10-14 10:04:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:50,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-14 10:04:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:50,615 INFO L225 Difference]: With dead ends: 907 [2020-10-14 10:04:50,615 INFO L226 Difference]: Without dead ends: 504 [2020-10-14 10:04:50,617 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 [2020-10-14 10:04:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-14 10:04:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 441. [2020-10-14 10:04:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 10:04:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 725 transitions. [2020-10-14 10:04:50,632 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 725 transitions. Word has length 76 [2020-10-14 10:04:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:50,633 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 725 transitions. [2020-10-14 10:04:50,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 725 transitions. [2020-10-14 10:04:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 10:04:50,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:50,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:50,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:04:50,635 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:50,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1323723885, now seen corresponding path program 1 times [2020-10-14 10:04:50,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:50,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865378742] [2020-10-14 10:04:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:53,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:53,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 10:04:53,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:04:53,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2887 [2020-10-14 10:04:53,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:53,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 10:04:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:53,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:53,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:53,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:53,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:53,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:53,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:53,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:53,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865378742] [2020-10-14 10:04:53,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:53,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:53,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019367500] [2020-10-14 10:04:53,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:53,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:53,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:53,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:53,622 INFO L87 Difference]: Start difference. First operand 441 states and 725 transitions. Second operand 5 states. [2020-10-14 10:04:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:54,562 INFO L93 Difference]: Finished difference Result 919 states and 1507 transitions. [2020-10-14 10:04:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:54,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-14 10:04:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:54,566 INFO L225 Difference]: With dead ends: 919 [2020-10-14 10:04:54,567 INFO L226 Difference]: Without dead ends: 713 [2020-10-14 10:04:54,568 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 [2020-10-14 10:04:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-14 10:04:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 441. [2020-10-14 10:04:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 10:04:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 725 transitions. [2020-10-14 10:04:54,585 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 725 transitions. Word has length 77 [2020-10-14 10:04:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:54,585 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 725 transitions. [2020-10-14 10:04:54,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:54,585 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 725 transitions. [2020-10-14 10:04:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 10:04:54,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:54,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:54,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:04:54,587 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:54,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:54,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1110927468, now seen corresponding path program 1 times [2020-10-14 10:04:54,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:54,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973432501] [2020-10-14 10:04:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:54,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:54,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:55,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 10:04:55,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:55,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-14 10:04:55,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:55,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:55,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:55,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 10:04:55,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:55,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:55,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:55,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:55,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:55,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:55,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:56,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973432501] [2020-10-14 10:04:56,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:56,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:56,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492133210] [2020-10-14 10:04:56,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:56,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:56,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:56,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:56,004 INFO L87 Difference]: Start difference. First operand 441 states and 725 transitions. Second operand 5 states. [2020-10-14 10:04:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:56,961 INFO L93 Difference]: Finished difference Result 841 states and 1363 transitions. [2020-10-14 10:04:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:56,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-14 10:04:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:56,965 INFO L225 Difference]: With dead ends: 841 [2020-10-14 10:04:56,965 INFO L226 Difference]: Without dead ends: 635 [2020-10-14 10:04:56,966 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 [2020-10-14 10:04:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-14 10:04:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 441. [2020-10-14 10:04:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 10:04:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 725 transitions. [2020-10-14 10:04:56,982 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 725 transitions. Word has length 78 [2020-10-14 10:04:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:56,982 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 725 transitions. [2020-10-14 10:04:56,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 725 transitions. [2020-10-14 10:04:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 10:04:56,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:56,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:56,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:04:56,985 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:56,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1231138383, now seen corresponding path program 1 times [2020-10-14 10:04:56,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:56,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288964484] [2020-10-14 10:04:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:57,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 10:04:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-14 10:04:57,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:57,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:04:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:04:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:57,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:57,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:57,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:04:57,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:57,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:04:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:58,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288964484] [2020-10-14 10:04:58,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:58,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:58,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286554544] [2020-10-14 10:04:58,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:58,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:58,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:58,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:58,007 INFO L87 Difference]: Start difference. First operand 441 states and 725 transitions. Second operand 5 states. [2020-10-14 10:04:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:59,004 INFO L93 Difference]: Finished difference Result 841 states and 1363 transitions. [2020-10-14 10:04:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:59,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-14 10:04:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:59,008 INFO L225 Difference]: With dead ends: 841 [2020-10-14 10:04:59,009 INFO L226 Difference]: Without dead ends: 635 [2020-10-14 10:04:59,010 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 [2020-10-14 10:04:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-14 10:04:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 441. [2020-10-14 10:04:59,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 10:04:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 725 transitions. [2020-10-14 10:04:59,027 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 725 transitions. Word has length 79 [2020-10-14 10:04:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:59,027 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 725 transitions. [2020-10-14 10:04:59,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 725 transitions. [2020-10-14 10:04:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 10:04:59,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:59,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:59,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:04:59,030 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:59,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1939261519, now seen corresponding path program 1 times [2020-10-14 10:04:59,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:59,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379706406] [2020-10-14 10:04:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:00,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:00,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 10:05:00,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-14 10:05:00,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:00,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:05:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:05:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:00,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:00,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:00,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:00,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:00,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:00,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:00,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379706406] [2020-10-14 10:05:00,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:00,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:00,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596325069] [2020-10-14 10:05:00,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:00,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:00,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:00,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:00,286 INFO L87 Difference]: Start difference. First operand 441 states and 725 transitions. Second operand 5 states. [2020-10-14 10:05:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:01,248 INFO L93 Difference]: Finished difference Result 841 states and 1363 transitions. [2020-10-14 10:05:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:01,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-14 10:05:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:01,254 INFO L225 Difference]: With dead ends: 841 [2020-10-14 10:05:01,254 INFO L226 Difference]: Without dead ends: 635 [2020-10-14 10:05:01,255 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 [2020-10-14 10:05:01,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-14 10:05:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 441. [2020-10-14 10:05:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 10:05:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 725 transitions. [2020-10-14 10:05:01,269 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 725 transitions. Word has length 79 [2020-10-14 10:05:01,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:01,270 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 725 transitions. [2020-10-14 10:05:01,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 725 transitions. [2020-10-14 10:05:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 10:05:01,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:01,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:01,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:05:01,272 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2049853046, now seen corresponding path program 1 times [2020-10-14 10:05:01,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:01,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492962499] [2020-10-14 10:05:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:01,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:01,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:01,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 10:05:01,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 10:05:01,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:01,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:05:01,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:01,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:01,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:01,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:01,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:01,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:01,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492962499] [2020-10-14 10:05:01,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:01,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:01,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202226725] [2020-10-14 10:05:01,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:01,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:01,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:01,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:01,695 INFO L87 Difference]: Start difference. First operand 441 states and 725 transitions. Second operand 5 states. [2020-10-14 10:05:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:02,451 INFO L93 Difference]: Finished difference Result 907 states and 1473 transitions. [2020-10-14 10:05:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:02,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-14 10:05:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:02,454 INFO L225 Difference]: With dead ends: 907 [2020-10-14 10:05:02,455 INFO L226 Difference]: Without dead ends: 504 [2020-10-14 10:05:02,456 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 [2020-10-14 10:05:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-14 10:05:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 446. [2020-10-14 10:05:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-14 10:05:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 734 transitions. [2020-10-14 10:05:02,470 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 734 transitions. Word has length 81 [2020-10-14 10:05:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:02,471 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 734 transitions. [2020-10-14 10:05:02,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:02,471 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 734 transitions. [2020-10-14 10:05:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 10:05:02,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:02,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:02,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:05:02,473 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2030631672, now seen corresponding path program 1 times [2020-10-14 10:05:02,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:02,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037874976] [2020-10-14 10:05:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:02,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:02,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 10:05:02,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-14 10:05:02,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:02,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:05:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:02,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:02,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:02,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:02,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:02,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:02,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:02,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:02,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:02,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:02,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037874976] [2020-10-14 10:05:02,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:02,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:02,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735232901] [2020-10-14 10:05:02,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:02,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:02,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:02,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:02,908 INFO L87 Difference]: Start difference. First operand 446 states and 734 transitions. Second operand 5 states. [2020-10-14 10:05:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:03,712 INFO L93 Difference]: Finished difference Result 905 states and 1470 transitions. [2020-10-14 10:05:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:03,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-14 10:05:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:03,716 INFO L225 Difference]: With dead ends: 905 [2020-10-14 10:05:03,716 INFO L226 Difference]: Without dead ends: 502 [2020-10-14 10:05:03,717 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 [2020-10-14 10:05:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-14 10:05:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 447. [2020-10-14 10:05:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-14 10:05:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 735 transitions. [2020-10-14 10:05:03,729 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 735 transitions. Word has length 82 [2020-10-14 10:05:03,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:03,730 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 735 transitions. [2020-10-14 10:05:03,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 735 transitions. [2020-10-14 10:05:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 10:05:03,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:03,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:03,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:05:03,732 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:03,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1918407074, now seen corresponding path program 1 times [2020-10-14 10:05:03,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:03,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566727950] [2020-10-14 10:05:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:05,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 10:05:05,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1305 [2020-10-14 10:05:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:05,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:05:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:05,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:05,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:05,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:05,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:05,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:05,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:05:05,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566727950] [2020-10-14 10:05:05,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:05,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:05,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424626613] [2020-10-14 10:05:05,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:05,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:05,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:05,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:05,117 INFO L87 Difference]: Start difference. First operand 447 states and 735 transitions. Second operand 5 states. [2020-10-14 10:05:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:05,876 INFO L93 Difference]: Finished difference Result 905 states and 1469 transitions. [2020-10-14 10:05:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:05,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-14 10:05:05,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:05,879 INFO L225 Difference]: With dead ends: 905 [2020-10-14 10:05:05,879 INFO L226 Difference]: Without dead ends: 502 [2020-10-14 10:05:05,881 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 [2020-10-14 10:05:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-14 10:05:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 447. [2020-10-14 10:05:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-14 10:05:05,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 734 transitions. [2020-10-14 10:05:05,895 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 734 transitions. Word has length 89 [2020-10-14 10:05:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:05,896 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 734 transitions. [2020-10-14 10:05:05,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 734 transitions. [2020-10-14 10:05:05,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 10:05:05,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:05,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:05,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:05:05,899 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:05,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:05,899 INFO L82 PathProgramCache]: Analyzing trace with hash -727602442, now seen corresponding path program 1 times [2020-10-14 10:05:05,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:05,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66693270] [2020-10-14 10:05:05,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:05,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:06,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:06,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 10:05:06,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:06,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-10-14 10:05:06,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:06,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:05:06,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:06,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:06,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:06,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:06,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:06,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:06,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:06,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:06,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66693270] [2020-10-14 10:05:06,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:06,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:06,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526553246] [2020-10-14 10:05:06,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:06,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:06,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:06,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:06,765 INFO L87 Difference]: Start difference. First operand 447 states and 734 transitions. Second operand 5 states. [2020-10-14 10:05:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:07,571 INFO L93 Difference]: Finished difference Result 905 states and 1468 transitions. [2020-10-14 10:05:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:07,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-14 10:05:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:07,574 INFO L225 Difference]: With dead ends: 905 [2020-10-14 10:05:07,575 INFO L226 Difference]: Without dead ends: 502 [2020-10-14 10:05:07,575 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 [2020-10-14 10:05:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-14 10:05:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 450. [2020-10-14 10:05:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-14 10:05:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 737 transitions. [2020-10-14 10:05:07,590 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 737 transitions. Word has length 89 [2020-10-14 10:05:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:07,590 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 737 transitions. [2020-10-14 10:05:07,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 737 transitions. [2020-10-14 10:05:07,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 10:05:07,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:07,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:07,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:05:07,592 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:07,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1916831202, now seen corresponding path program 1 times [2020-10-14 10:05:07,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:07,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021510774] [2020-10-14 10:05:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:12,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:12,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 10:05:12,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:05:12,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:12,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:05:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:12,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:12,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:12,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:12,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:12,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:12,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:12,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:12,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021510774] [2020-10-14 10:05:12,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:12,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:12,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141454031] [2020-10-14 10:05:12,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:12,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:12,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:12,680 INFO L87 Difference]: Start difference. First operand 450 states and 737 transitions. Second operand 5 states. [2020-10-14 10:05:13,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:13,600 INFO L93 Difference]: Finished difference Result 1041 states and 1689 transitions. [2020-10-14 10:05:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:13,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-14 10:05:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:13,604 INFO L225 Difference]: With dead ends: 1041 [2020-10-14 10:05:13,604 INFO L226 Difference]: Without dead ends: 638 [2020-10-14 10:05:13,605 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 [2020-10-14 10:05:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-14 10:05:13,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 514. [2020-10-14 10:05:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-14 10:05:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 853 transitions. [2020-10-14 10:05:13,621 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 853 transitions. Word has length 90 [2020-10-14 10:05:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:13,622 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 853 transitions. [2020-10-14 10:05:13,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 853 transitions. [2020-10-14 10:05:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 10:05:13,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:13,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:13,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:05:13,624 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:13,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1964679819, now seen corresponding path program 1 times [2020-10-14 10:05:13,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:13,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310612205] [2020-10-14 10:05:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:14,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 10:05:14,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:14,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-14 10:05:14,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:14,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:05:14,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:14,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:14,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:14,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:14,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:05:14,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310612205] [2020-10-14 10:05:14,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:14,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:14,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924829273] [2020-10-14 10:05:14,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:14,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:14,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:14,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:14,855 INFO L87 Difference]: Start difference. First operand 514 states and 853 transitions. Second operand 5 states. [2020-10-14 10:05:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:15,625 INFO L93 Difference]: Finished difference Result 1031 states and 1697 transitions. [2020-10-14 10:05:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:15,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-14 10:05:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:15,629 INFO L225 Difference]: With dead ends: 1031 [2020-10-14 10:05:15,629 INFO L226 Difference]: Without dead ends: 564 [2020-10-14 10:05:15,630 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 [2020-10-14 10:05:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-14 10:05:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 514. [2020-10-14 10:05:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-14 10:05:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 852 transitions. [2020-10-14 10:05:15,646 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 852 transitions. Word has length 90 [2020-10-14 10:05:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:15,647 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 852 transitions. [2020-10-14 10:05:15,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 852 transitions. [2020-10-14 10:05:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 10:05:15,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:15,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:15,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:05:15,649 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1961491748, now seen corresponding path program 1 times [2020-10-14 10:05:15,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:15,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124152225] [2020-10-14 10:05:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:16,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:16,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 10:05:16,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-14 10:05:16,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:16,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:05:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:16,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:16,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:16,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:16,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:16,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:16,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124152225] [2020-10-14 10:05:16,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:16,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:16,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184113581] [2020-10-14 10:05:16,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:16,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:16,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:16,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:16,415 INFO L87 Difference]: Start difference. First operand 514 states and 852 transitions. Second operand 5 states. [2020-10-14 10:05:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:17,200 INFO L93 Difference]: Finished difference Result 1030 states and 1695 transitions. [2020-10-14 10:05:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:17,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-14 10:05:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:17,204 INFO L225 Difference]: With dead ends: 1030 [2020-10-14 10:05:17,205 INFO L226 Difference]: Without dead ends: 563 [2020-10-14 10:05:17,206 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 [2020-10-14 10:05:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-14 10:05:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 515. [2020-10-14 10:05:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-10-14 10:05:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 853 transitions. [2020-10-14 10:05:17,219 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 853 transitions. Word has length 90 [2020-10-14 10:05:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:17,220 INFO L479 AbstractCegarLoop]: Abstraction has 515 states and 853 transitions. [2020-10-14 10:05:17,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 853 transitions. [2020-10-14 10:05:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 10:05:17,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:17,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:17,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:05:17,222 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:17,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:17,222 INFO L82 PathProgramCache]: Analyzing trace with hash -525067628, now seen corresponding path program 1 times [2020-10-14 10:05:17,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:17,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217775261] [2020-10-14 10:05:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:17,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:17,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:17,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 10:05:17,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 10:05:17,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:17,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:05:17,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:17,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:17,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:17,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:05:17,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:17,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:17,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217775261] [2020-10-14 10:05:17,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:17,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:17,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971268118] [2020-10-14 10:05:17,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:17,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:17,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:17,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:17,598 INFO L87 Difference]: Start difference. First operand 515 states and 853 transitions. Second operand 5 states. [2020-10-14 10:05:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:18,545 INFO L93 Difference]: Finished difference Result 1171 states and 1922 transitions. [2020-10-14 10:05:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:18,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-14 10:05:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:18,550 INFO L225 Difference]: With dead ends: 1171 [2020-10-14 10:05:18,550 INFO L226 Difference]: Without dead ends: 704 [2020-10-14 10:05:18,551 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 [2020-10-14 10:05:18,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-10-14 10:05:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 516. [2020-10-14 10:05:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 10:05:18,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 854 transitions. [2020-10-14 10:05:18,564 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 854 transitions. Word has length 90 [2020-10-14 10:05:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:18,564 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 854 transitions. [2020-10-14 10:05:18,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 854 transitions. [2020-10-14 10:05:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 10:05:18,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:18,566 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:18,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:05:18,566 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:18,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:18,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1722051149, now seen corresponding path program 1 times [2020-10-14 10:05:18,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:18,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836167724] [2020-10-14 10:05:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:18,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:18,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:23,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:23,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 10:05:23,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:05:23,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:05:23,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:23,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:05:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:05:23,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:23,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:23,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:23,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:23,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:23,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:23,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:23,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:23,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836167724] [2020-10-14 10:05:23,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:23,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:23,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867545007] [2020-10-14 10:05:23,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:23,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:23,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:23,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:23,657 INFO L87 Difference]: Start difference. First operand 516 states and 854 transitions. Second operand 5 states. [2020-10-14 10:05:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:24,412 INFO L93 Difference]: Finished difference Result 1282 states and 2116 transitions. [2020-10-14 10:05:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:24,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 10:05:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:24,417 INFO L225 Difference]: With dead ends: 1282 [2020-10-14 10:05:24,417 INFO L226 Difference]: Without dead ends: 814 [2020-10-14 10:05:24,418 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 [2020-10-14 10:05:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-10-14 10:05:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 579. [2020-10-14 10:05:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-14 10:05:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 969 transitions. [2020-10-14 10:05:24,433 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 969 transitions. Word has length 91 [2020-10-14 10:05:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:24,434 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 969 transitions. [2020-10-14 10:05:24,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 969 transitions. [2020-10-14 10:05:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 10:05:24,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:24,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:24,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:05:24,436 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:24,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:24,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1181265519, now seen corresponding path program 1 times [2020-10-14 10:05:24,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:24,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462026608] [2020-10-14 10:05:24,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:25,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 10:05:25,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1387 [2020-10-14 10:05:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:25,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:05:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:25,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:25,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:25,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:25,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:25,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:25,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462026608] [2020-10-14 10:05:25,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:25,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:25,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402255071] [2020-10-14 10:05:25,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:25,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:25,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:25,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:25,912 INFO L87 Difference]: Start difference. First operand 579 states and 969 transitions. Second operand 5 states. [2020-10-14 10:05:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:26,676 INFO L93 Difference]: Finished difference Result 1158 states and 1926 transitions. [2020-10-14 10:05:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:26,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 10:05:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:26,680 INFO L225 Difference]: With dead ends: 1158 [2020-10-14 10:05:26,680 INFO L226 Difference]: Without dead ends: 627 [2020-10-14 10:05:26,681 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 [2020-10-14 10:05:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-14 10:05:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 580. [2020-10-14 10:05:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-14 10:05:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 970 transitions. [2020-10-14 10:05:26,701 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 970 transitions. Word has length 91 [2020-10-14 10:05:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:26,702 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 970 transitions. [2020-10-14 10:05:26,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 970 transitions. [2020-10-14 10:05:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 10:05:26,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:26,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:26,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:05:26,703 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:26,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1020636063, now seen corresponding path program 1 times [2020-10-14 10:05:26,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:26,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376578619] [2020-10-14 10:05:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:26,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:28,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:28,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 10:05:28,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:28,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-14 10:05:28,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:28,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:28,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:05:28,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:28,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:28,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:28,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:28,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:28,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:28,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:28,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376578619] [2020-10-14 10:05:28,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:28,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:28,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246807285] [2020-10-14 10:05:28,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:28,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:28,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:28,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:28,320 INFO L87 Difference]: Start difference. First operand 580 states and 970 transitions. Second operand 5 states. [2020-10-14 10:05:29,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:29,087 INFO L93 Difference]: Finished difference Result 1154 states and 1921 transitions. [2020-10-14 10:05:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:29,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 10:05:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:29,091 INFO L225 Difference]: With dead ends: 1154 [2020-10-14 10:05:29,091 INFO L226 Difference]: Without dead ends: 615 [2020-10-14 10:05:29,092 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 [2020-10-14 10:05:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-10-14 10:05:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 573. [2020-10-14 10:05:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-10-14 10:05:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 962 transitions. [2020-10-14 10:05:29,105 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 962 transitions. Word has length 92 [2020-10-14 10:05:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:29,105 INFO L479 AbstractCegarLoop]: Abstraction has 573 states and 962 transitions. [2020-10-14 10:05:29,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 962 transitions. [2020-10-14 10:05:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 10:05:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:29,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:29,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:05:29,107 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:29,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:29,107 INFO L82 PathProgramCache]: Analyzing trace with hash 20927158, now seen corresponding path program 1 times [2020-10-14 10:05:29,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:29,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947818465] [2020-10-14 10:05:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:33,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 10:05:33,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:33,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4500 [2020-10-14 10:05:33,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:33,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:33,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:33,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:33,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:33,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:33,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:33,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:33,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:33,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:33,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:33,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:33,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947818465] [2020-10-14 10:05:33,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:33,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:33,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672164063] [2020-10-14 10:05:33,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:33,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:33,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:33,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:33,695 INFO L87 Difference]: Start difference. First operand 573 states and 962 transitions. Second operand 5 states. [2020-10-14 10:05:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:34,565 INFO L93 Difference]: Finished difference Result 1292 states and 2144 transitions. [2020-10-14 10:05:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:34,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-14 10:05:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:34,570 INFO L225 Difference]: With dead ends: 1292 [2020-10-14 10:05:34,570 INFO L226 Difference]: Without dead ends: 761 [2020-10-14 10:05:34,571 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 [2020-10-14 10:05:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-10-14 10:05:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 647. [2020-10-14 10:05:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-10-14 10:05:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1096 transitions. [2020-10-14 10:05:34,585 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1096 transitions. Word has length 95 [2020-10-14 10:05:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:34,585 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 1096 transitions. [2020-10-14 10:05:34,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1096 transitions. [2020-10-14 10:05:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 10:05:34,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:34,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:34,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:05:34,586 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:34,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash 931826688, now seen corresponding path program 1 times [2020-10-14 10:05:34,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:34,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660740540] [2020-10-14 10:05:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:34,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:34,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 10:05:34,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:34,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-14 10:05:34,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:34,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:34,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:34,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:34,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:34,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:35,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660740540] [2020-10-14 10:05:35,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:35,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:35,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140294573] [2020-10-14 10:05:35,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:35,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:35,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:35,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:35,002 INFO L87 Difference]: Start difference. First operand 647 states and 1096 transitions. Second operand 5 states. [2020-10-14 10:05:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:35,925 INFO L93 Difference]: Finished difference Result 1441 states and 2413 transitions. [2020-10-14 10:05:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:35,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-14 10:05:35,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:35,930 INFO L225 Difference]: With dead ends: 1441 [2020-10-14 10:05:35,930 INFO L226 Difference]: Without dead ends: 836 [2020-10-14 10:05:35,931 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 [2020-10-14 10:05:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-14 10:05:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 648. [2020-10-14 10:05:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-14 10:05:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1097 transitions. [2020-10-14 10:05:35,950 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1097 transitions. Word has length 95 [2020-10-14 10:05:35,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:35,951 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 1097 transitions. [2020-10-14 10:05:35,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:35,951 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1097 transitions. [2020-10-14 10:05:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 10:05:35,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:35,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:35,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:05:35,952 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:35,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:35,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1800308556, now seen corresponding path program 1 times [2020-10-14 10:05:35,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:35,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533959851] [2020-10-14 10:05:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:40,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 10:05:40,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4641 [2020-10-14 10:05:40,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:40,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:40,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:40,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:40,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:40,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:40,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:40,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:40,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:40,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:40,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533959851] [2020-10-14 10:05:40,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:40,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:40,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121749361] [2020-10-14 10:05:40,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:40,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:40,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:40,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:40,668 INFO L87 Difference]: Start difference. First operand 648 states and 1097 transitions. Second operand 5 states. [2020-10-14 10:05:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:41,542 INFO L93 Difference]: Finished difference Result 1438 states and 2408 transitions. [2020-10-14 10:05:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:41,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 10:05:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:41,548 INFO L225 Difference]: With dead ends: 1438 [2020-10-14 10:05:41,548 INFO L226 Difference]: Without dead ends: 832 [2020-10-14 10:05:41,551 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 [2020-10-14 10:05:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-14 10:05:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 724. [2020-10-14 10:05:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-14 10:05:41,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1233 transitions. [2020-10-14 10:05:41,575 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1233 transitions. Word has length 96 [2020-10-14 10:05:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:41,575 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 1233 transitions. [2020-10-14 10:05:41,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1233 transitions. [2020-10-14 10:05:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 10:05:41,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:41,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:41,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:05:41,578 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:41,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:41,578 INFO L82 PathProgramCache]: Analyzing trace with hash -398578623, now seen corresponding path program 1 times [2020-10-14 10:05:41,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:41,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001650347] [2020-10-14 10:05:41,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:46,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 10:05:46,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:05:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 10:05:46,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:46,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:05:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:46,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:46,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:46,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:46,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:05:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:46,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:46,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001650347] [2020-10-14 10:05:46,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:46,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:46,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612053481] [2020-10-14 10:05:46,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:46,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:46,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:46,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:46,728 INFO L87 Difference]: Start difference. First operand 724 states and 1233 transitions. Second operand 5 states. [2020-10-14 10:05:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:47,509 INFO L93 Difference]: Finished difference Result 1632 states and 2741 transitions. [2020-10-14 10:05:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:47,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 10:05:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:47,515 INFO L225 Difference]: With dead ends: 1632 [2020-10-14 10:05:47,515 INFO L226 Difference]: Without dead ends: 950 [2020-10-14 10:05:47,516 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 [2020-10-14 10:05:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-10-14 10:05:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 723. [2020-10-14 10:05:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-10-14 10:05:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1230 transitions. [2020-10-14 10:05:47,534 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1230 transitions. Word has length 96 [2020-10-14 10:05:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:47,534 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 1230 transitions. [2020-10-14 10:05:47,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:47,535 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1230 transitions. [2020-10-14 10:05:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 10:05:47,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:47,536 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:47,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:05:47,537 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash -26577086, now seen corresponding path program 1 times [2020-10-14 10:05:47,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:47,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668580786] [2020-10-14 10:05:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:48,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 10:05:48,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-14 10:05:48,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:48,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 10:05:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:48,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:48,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:48,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:05:48,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:48,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:48,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668580786] [2020-10-14 10:05:48,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:48,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:48,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229034561] [2020-10-14 10:05:48,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:48,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:48,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:48,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:48,095 INFO L87 Difference]: Start difference. First operand 723 states and 1230 transitions. Second operand 5 states. [2020-10-14 10:05:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:49,045 INFO L93 Difference]: Finished difference Result 1589 states and 2675 transitions. [2020-10-14 10:05:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:49,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 10:05:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:49,051 INFO L225 Difference]: With dead ends: 1589 [2020-10-14 10:05:49,051 INFO L226 Difference]: Without dead ends: 908 [2020-10-14 10:05:49,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-10-14 10:05:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 724. [2020-10-14 10:05:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-14 10:05:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1231 transitions. [2020-10-14 10:05:49,067 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1231 transitions. Word has length 96 [2020-10-14 10:05:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:49,067 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 1231 transitions. [2020-10-14 10:05:49,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1231 transitions. [2020-10-14 10:05:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 10:05:49,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:49,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:49,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:05:49,069 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:49,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1680531233, now seen corresponding path program 1 times [2020-10-14 10:05:49,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:49,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722397611] [2020-10-14 10:05:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:49,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:49,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:49,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:54,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:54,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 10:05:54,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:05:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:05:54,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:54,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:05:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:54,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:54,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:54,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:54,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:54,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:54,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722397611] [2020-10-14 10:05:54,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:54,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:54,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263538524] [2020-10-14 10:05:54,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:54,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:54,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:54,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:54,187 INFO L87 Difference]: Start difference. First operand 724 states and 1231 transitions. Second operand 5 states. [2020-10-14 10:05:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:55,018 INFO L93 Difference]: Finished difference Result 1760 states and 2976 transitions. [2020-10-14 10:05:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:55,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-14 10:05:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:55,023 INFO L225 Difference]: With dead ends: 1760 [2020-10-14 10:05:55,023 INFO L226 Difference]: Without dead ends: 1078 [2020-10-14 10:05:55,025 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 [2020-10-14 10:05:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-10-14 10:05:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 788. [2020-10-14 10:05:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-10-14 10:05:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1349 transitions. [2020-10-14 10:05:55,045 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1349 transitions. Word has length 97 [2020-10-14 10:05:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:55,045 INFO L479 AbstractCegarLoop]: Abstraction has 788 states and 1349 transitions. [2020-10-14 10:05:55,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1349 transitions. [2020-10-14 10:05:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 10:05:55,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:55,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:55,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 10:05:55,047 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:55,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:55,047 INFO L82 PathProgramCache]: Analyzing trace with hash 658891801, now seen corresponding path program 1 times [2020-10-14 10:05:55,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:55,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81561520] [2020-10-14 10:05:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:55,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 10:05:55,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:05:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 10:05:55,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:55,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:05:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:55,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:55,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:55,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:55,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:55,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:55,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:55,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:55,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:55,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:05:55,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81561520] [2020-10-14 10:05:55,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:55,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:55,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562531209] [2020-10-14 10:05:55,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:55,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:55,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:55,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:55,402 INFO L87 Difference]: Start difference. First operand 788 states and 1349 transitions. Second operand 5 states. [2020-10-14 10:05:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:56,332 INFO L93 Difference]: Finished difference Result 1718 states and 2912 transitions. [2020-10-14 10:05:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:56,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-14 10:05:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:56,338 INFO L225 Difference]: With dead ends: 1718 [2020-10-14 10:05:56,338 INFO L226 Difference]: Without dead ends: 972 [2020-10-14 10:05:56,339 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 [2020-10-14 10:05:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-10-14 10:05:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 788. [2020-10-14 10:05:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-10-14 10:05:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1349 transitions. [2020-10-14 10:05:56,357 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1349 transitions. Word has length 99 [2020-10-14 10:05:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:56,357 INFO L479 AbstractCegarLoop]: Abstraction has 788 states and 1349 transitions. [2020-10-14 10:05:56,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1349 transitions. [2020-10-14 10:05:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 10:05:56,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:56,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1] [2020-10-14 10:05:56,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 10:05:56,358 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1830797618, now seen corresponding path program 1 times [2020-10-14 10:05:56,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:56,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86086923] [2020-10-14 10:05:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 10:05:57,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-14 10:05:57,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:57,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:05:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:57,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:57,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:57,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:57,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:05:57,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86086923] [2020-10-14 10:05:57,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:57,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:57,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121167986] [2020-10-14 10:05:57,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:57,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:57,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:57,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:57,877 INFO L87 Difference]: Start difference. First operand 788 states and 1349 transitions. Second operand 5 states. [2020-10-14 10:05:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:58,615 INFO L93 Difference]: Finished difference Result 2297 states and 3938 transitions. [2020-10-14 10:05:58,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:58,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 10:05:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:58,624 INFO L225 Difference]: With dead ends: 2297 [2020-10-14 10:05:58,625 INFO L226 Difference]: Without dead ends: 1551 [2020-10-14 10:05:58,627 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 [2020-10-14 10:05:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2020-10-14 10:05:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1547. [2020-10-14 10:05:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2020-10-14 10:05:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2635 transitions. [2020-10-14 10:05:58,684 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2635 transitions. Word has length 103 [2020-10-14 10:05:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:58,684 INFO L479 AbstractCegarLoop]: Abstraction has 1547 states and 2635 transitions. [2020-10-14 10:05:58,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2635 transitions. [2020-10-14 10:05:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 10:05:58,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:58,688 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1] [2020-10-14 10:05:58,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 10:05:58,688 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:58,689 INFO L82 PathProgramCache]: Analyzing trace with hash 587686860, now seen corresponding path program 1 times [2020-10-14 10:05:58,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:58,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847407984] [2020-10-14 10:05:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:00,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:00,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 10:06:00,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:06:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-14 10:06:00,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:00,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:06:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:00,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:00,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:00,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:00,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:00,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:06:00,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847407984] [2020-10-14 10:06:00,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:00,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:00,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307863406] [2020-10-14 10:06:00,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:00,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:00,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:00,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:00,671 INFO L87 Difference]: Start difference. First operand 1547 states and 2635 transitions. Second operand 5 states. [2020-10-14 10:06:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:01,585 INFO L93 Difference]: Finished difference Result 3101 states and 5253 transitions. [2020-10-14 10:06:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:01,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 10:06:01,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:01,592 INFO L225 Difference]: With dead ends: 3101 [2020-10-14 10:06:01,593 INFO L226 Difference]: Without dead ends: 1629 [2020-10-14 10:06:01,596 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 [2020-10-14 10:06:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-10-14 10:06:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1547. [2020-10-14 10:06:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2020-10-14 10:06:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2633 transitions. [2020-10-14 10:06:01,640 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2633 transitions. Word has length 103 [2020-10-14 10:06:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:01,640 INFO L479 AbstractCegarLoop]: Abstraction has 1547 states and 2633 transitions. [2020-10-14 10:06:01,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2633 transitions. [2020-10-14 10:06:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 10:06:01,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:01,643 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1] [2020-10-14 10:06:01,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 10:06:01,643 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:01,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:01,643 INFO L82 PathProgramCache]: Analyzing trace with hash -2113135520, now seen corresponding path program 1 times [2020-10-14 10:06:01,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:01,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493299750] [2020-10-14 10:06:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:04,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 10:06:04,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2602 [2020-10-14 10:06:04,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:04,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:06:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:04,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:04,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:04,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:04,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:06:04,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493299750] [2020-10-14 10:06:04,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:04,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:04,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895873760] [2020-10-14 10:06:04,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:04,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:04,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:04,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:04,328 INFO L87 Difference]: Start difference. First operand 1547 states and 2633 transitions. Second operand 5 states. [2020-10-14 10:06:05,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:05,124 INFO L93 Difference]: Finished difference Result 3101 states and 5251 transitions. [2020-10-14 10:06:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:05,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 10:06:05,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:05,130 INFO L225 Difference]: With dead ends: 3101 [2020-10-14 10:06:05,131 INFO L226 Difference]: Without dead ends: 1629 [2020-10-14 10:06:05,133 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 [2020-10-14 10:06:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-10-14 10:06:05,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1547. [2020-10-14 10:06:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2020-10-14 10:06:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2631 transitions. [2020-10-14 10:06:05,183 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2631 transitions. Word has length 103 [2020-10-14 10:06:05,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:05,183 INFO L479 AbstractCegarLoop]: Abstraction has 1547 states and 2631 transitions. [2020-10-14 10:06:05,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2631 transitions. [2020-10-14 10:06:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 10:06:05,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:05,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:05,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 10:06:05,187 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash -705097787, now seen corresponding path program 1 times [2020-10-14 10:06:05,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:05,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430561485] [2020-10-14 10:06:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:05,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 10:06:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2711 [2020-10-14 10:06:07,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:07,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:06:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:07,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:07,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:07,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:07,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:06:07,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430561485] [2020-10-14 10:06:07,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:07,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:07,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95731416] [2020-10-14 10:06:07,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:07,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:07,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:07,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:07,982 INFO L87 Difference]: Start difference. First operand 1547 states and 2631 transitions. Second operand 5 states. [2020-10-14 10:06:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:08,785 INFO L93 Difference]: Finished difference Result 3101 states and 5249 transitions. [2020-10-14 10:06:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:08,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 10:06:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:08,789 INFO L225 Difference]: With dead ends: 3101 [2020-10-14 10:06:08,789 INFO L226 Difference]: Without dead ends: 1629 [2020-10-14 10:06:08,791 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 [2020-10-14 10:06:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-10-14 10:06:08,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1547. [2020-10-14 10:06:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2020-10-14 10:06:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2629 transitions. [2020-10-14 10:06:08,830 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2629 transitions. Word has length 103 [2020-10-14 10:06:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:08,830 INFO L479 AbstractCegarLoop]: Abstraction has 1547 states and 2629 transitions. [2020-10-14 10:06:08,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:08,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2629 transitions. [2020-10-14 10:06:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 10:06:08,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:08,833 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:08,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 10:06:08,834 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1722453528, now seen corresponding path program 1 times [2020-10-14 10:06:08,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:08,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450226327] [2020-10-14 10:06:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:08,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:11,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:11,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 10:06:11,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:11,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2225 [2020-10-14 10:06:11,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:11,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:06:11,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:11,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:11,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:11,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:11,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:11,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:11,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:06:11,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450226327] [2020-10-14 10:06:11,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:11,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:11,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468192296] [2020-10-14 10:06:11,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:11,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:11,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:11,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:11,139 INFO L87 Difference]: Start difference. First operand 1547 states and 2629 transitions. Second operand 5 states. [2020-10-14 10:06:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:11,908 INFO L93 Difference]: Finished difference Result 3099 states and 5245 transitions. [2020-10-14 10:06:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:11,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 10:06:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:11,912 INFO L225 Difference]: With dead ends: 3099 [2020-10-14 10:06:11,912 INFO L226 Difference]: Without dead ends: 1627 [2020-10-14 10:06:11,914 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 [2020-10-14 10:06:11,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-10-14 10:06:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1547. [2020-10-14 10:06:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2020-10-14 10:06:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2627 transitions. [2020-10-14 10:06:11,967 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2627 transitions. Word has length 103 [2020-10-14 10:06:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:11,967 INFO L479 AbstractCegarLoop]: Abstraction has 1547 states and 2627 transitions. [2020-10-14 10:06:11,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2627 transitions. [2020-10-14 10:06:11,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:06:11,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:11,971 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-14 10:06:11,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 10:06:11,971 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:11,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:11,971 INFO L82 PathProgramCache]: Analyzing trace with hash 562409907, now seen corresponding path program 1 times [2020-10-14 10:06:11,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:11,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079294615] [2020-10-14 10:06:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:11,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:15,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:06:15,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:15,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3077 [2020-10-14 10:06:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:15,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:06:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:15,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:15,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:06:15,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079294615] [2020-10-14 10:06:15,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:15,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:15,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114005996] [2020-10-14 10:06:15,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:15,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:15,164 INFO L87 Difference]: Start difference. First operand 1547 states and 2627 transitions. Second operand 5 states. [2020-10-14 10:06:15,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:15,962 INFO L93 Difference]: Finished difference Result 3099 states and 5243 transitions. [2020-10-14 10:06:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:15,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 10:06:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:15,967 INFO L225 Difference]: With dead ends: 3099 [2020-10-14 10:06:15,967 INFO L226 Difference]: Without dead ends: 1627 [2020-10-14 10:06:15,970 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 [2020-10-14 10:06:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-10-14 10:06:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1547. [2020-10-14 10:06:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2020-10-14 10:06:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2625 transitions. [2020-10-14 10:06:16,026 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2625 transitions. Word has length 104 [2020-10-14 10:06:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:16,026 INFO L479 AbstractCegarLoop]: Abstraction has 1547 states and 2625 transitions. [2020-10-14 10:06:16,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2625 transitions. [2020-10-14 10:06:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:06:16,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:16,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:16,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 10:06:16,031 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:16,031 INFO L82 PathProgramCache]: Analyzing trace with hash 823268977, now seen corresponding path program 1 times [2020-10-14 10:06:16,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:16,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949774778] [2020-10-14 10:06:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:06:17,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-14 10:06:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:17,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:06:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:17,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:17,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:17,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:17,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:17,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949774778] [2020-10-14 10:06:17,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:17,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:17,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623263103] [2020-10-14 10:06:17,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:17,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:17,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:17,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:17,176 INFO L87 Difference]: Start difference. First operand 1547 states and 2625 transitions. Second operand 5 states. [2020-10-14 10:06:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:18,214 INFO L93 Difference]: Finished difference Result 3389 states and 5694 transitions. [2020-10-14 10:06:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:18,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 10:06:18,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:18,220 INFO L225 Difference]: With dead ends: 3389 [2020-10-14 10:06:18,220 INFO L226 Difference]: Without dead ends: 1917 [2020-10-14 10:06:18,223 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 [2020-10-14 10:06:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-10-14 10:06:18,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1549. [2020-10-14 10:06:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1549 states. [2020-10-14 10:06:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2627 transitions. [2020-10-14 10:06:18,280 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2627 transitions. Word has length 104 [2020-10-14 10:06:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:18,281 INFO L479 AbstractCegarLoop]: Abstraction has 1549 states and 2627 transitions. [2020-10-14 10:06:18,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2627 transitions. [2020-10-14 10:06:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:06:18,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:18,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:18,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 10:06:18,286 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:18,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1710491823, now seen corresponding path program 1 times [2020-10-14 10:06:18,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:18,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326286831] [2020-10-14 10:06:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:18,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:20,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:20,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:06:20,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2314 [2020-10-14 10:06:20,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:20,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:06:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:06:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:20,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:20,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:20,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:20,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326286831] [2020-10-14 10:06:20,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:20,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:20,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920186461] [2020-10-14 10:06:20,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:20,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:20,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:20,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:20,697 INFO L87 Difference]: Start difference. First operand 1549 states and 2627 transitions. Second operand 5 states. [2020-10-14 10:06:21,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:21,761 INFO L93 Difference]: Finished difference Result 3389 states and 5694 transitions. [2020-10-14 10:06:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:21,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 10:06:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:21,765 INFO L225 Difference]: With dead ends: 3389 [2020-10-14 10:06:21,766 INFO L226 Difference]: Without dead ends: 1915 [2020-10-14 10:06:21,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2020-10-14 10:06:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1545. [2020-10-14 10:06:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-10-14 10:06:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2623 transitions. [2020-10-14 10:06:21,826 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2623 transitions. Word has length 104 [2020-10-14 10:06:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:21,827 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 2623 transitions. [2020-10-14 10:06:21,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2623 transitions. [2020-10-14 10:06:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:06:21,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:21,831 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:21,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 10:06:21,832 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:21,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:21,832 INFO L82 PathProgramCache]: Analyzing trace with hash -245558625, now seen corresponding path program 1 times [2020-10-14 10:06:21,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:21,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843289876] [2020-10-14 10:06:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:24,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:24,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:06:24,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2439 [2020-10-14 10:06:24,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:24,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 10:06:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:06:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:24,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:24,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:24,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:24,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:24,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:24,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:24,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:24,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843289876] [2020-10-14 10:06:24,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:24,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:24,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668046882] [2020-10-14 10:06:24,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:24,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:24,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:24,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:24,351 INFO L87 Difference]: Start difference. First operand 1545 states and 2623 transitions. Second operand 5 states. [2020-10-14 10:06:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:25,358 INFO L93 Difference]: Finished difference Result 3381 states and 5686 transitions. [2020-10-14 10:06:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:25,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 10:06:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:25,362 INFO L225 Difference]: With dead ends: 3381 [2020-10-14 10:06:25,363 INFO L226 Difference]: Without dead ends: 1911 [2020-10-14 10:06:25,365 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 [2020-10-14 10:06:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-10-14 10:06:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1545. [2020-10-14 10:06:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-10-14 10:06:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2623 transitions. [2020-10-14 10:06:25,420 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2623 transitions. Word has length 104 [2020-10-14 10:06:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:25,421 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 2623 transitions. [2020-10-14 10:06:25,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2623 transitions. [2020-10-14 10:06:25,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:06:25,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:25,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 10:06:25,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 10:06:25,425 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:25,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:25,425 INFO L82 PathProgramCache]: Analyzing trace with hash -542754120, now seen corresponding path program 1 times [2020-10-14 10:06:25,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:25,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729789534] [2020-10-14 10:06:25,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:27,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:06:27,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-10-14 10:06:27,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:27,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 10:06:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:27,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:27,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:27,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:27,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:27,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:06:27,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729789534] [2020-10-14 10:06:27,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:27,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:27,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876459755] [2020-10-14 10:06:27,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:27,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:27,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:27,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:27,908 INFO L87 Difference]: Start difference. First operand 1545 states and 2623 transitions. Second operand 5 states. [2020-10-14 10:06:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:28,678 INFO L93 Difference]: Finished difference Result 3091 states and 5233 transitions. [2020-10-14 10:06:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:28,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 10:06:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:28,681 INFO L225 Difference]: With dead ends: 3091 [2020-10-14 10:06:28,682 INFO L226 Difference]: Without dead ends: 1621 [2020-10-14 10:06:28,684 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 [2020-10-14 10:06:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2020-10-14 10:06:28,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1545. [2020-10-14 10:06:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-10-14 10:06:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2621 transitions. [2020-10-14 10:06:28,728 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2621 transitions. Word has length 104 [2020-10-14 10:06:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:28,729 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 2621 transitions. [2020-10-14 10:06:28,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2621 transitions. [2020-10-14 10:06:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 10:06:28,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:28,731 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-10-14 10:06:28,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 10:06:28,731 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:28,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1713234683, now seen corresponding path program 1 times [2020-10-14 10:06:28,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:28,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783824177] [2020-10-14 10:06:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:28,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:31,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 10:06:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3232 [2020-10-14 10:06:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:31,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:06:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:32,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:32,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:32,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:32,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:32,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:32,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:32,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:06:32,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783824177] [2020-10-14 10:06:32,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:32,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:32,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593470882] [2020-10-14 10:06:32,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:32,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:32,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:32,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:32,047 INFO L87 Difference]: Start difference. First operand 1545 states and 2621 transitions. Second operand 5 states. [2020-10-14 10:06:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:32,822 INFO L93 Difference]: Finished difference Result 3091 states and 5231 transitions. [2020-10-14 10:06:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:32,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 10:06:32,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:32,825 INFO L225 Difference]: With dead ends: 3091 [2020-10-14 10:06:32,825 INFO L226 Difference]: Without dead ends: 1621 [2020-10-14 10:06:32,828 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 [2020-10-14 10:06:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2020-10-14 10:06:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1545. [2020-10-14 10:06:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-10-14 10:06:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2619 transitions. [2020-10-14 10:06:32,864 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2619 transitions. Word has length 105 [2020-10-14 10:06:32,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:32,864 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 2619 transitions. [2020-10-14 10:06:32,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2619 transitions. [2020-10-14 10:06:32,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 10:06:32,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:32,867 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:32,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 10:06:32,867 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:32,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1042764632, now seen corresponding path program 1 times [2020-10-14 10:06:32,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:32,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815198024] [2020-10-14 10:06:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 10:06:33,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-14 10:06:33,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:33,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:06:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:06:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:33,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:33,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:33,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:33,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:33,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815198024] [2020-10-14 10:06:33,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:33,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:33,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771999051] [2020-10-14 10:06:33,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:33,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:33,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:33,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:33,834 INFO L87 Difference]: Start difference. First operand 1545 states and 2619 transitions. Second operand 4 states. [2020-10-14 10:06:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:34,330 INFO L93 Difference]: Finished difference Result 3019 states and 5143 transitions. [2020-10-14 10:06:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:34,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-14 10:06:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:34,334 INFO L225 Difference]: With dead ends: 3019 [2020-10-14 10:06:34,334 INFO L226 Difference]: Without dead ends: 2279 [2020-10-14 10:06:34,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-10-14 10:06:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2273. [2020-10-14 10:06:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-10-14 10:06:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3862 transitions. [2020-10-14 10:06:34,417 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3862 transitions. Word has length 105 [2020-10-14 10:06:34,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:34,417 INFO L479 AbstractCegarLoop]: Abstraction has 2273 states and 3862 transitions. [2020-10-14 10:06:34,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3862 transitions. [2020-10-14 10:06:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:06:34,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:34,422 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:34,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 10:06:34,422 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:34,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:34,422 INFO L82 PathProgramCache]: Analyzing trace with hash -562409119, now seen corresponding path program 1 times [2020-10-14 10:06:34,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:34,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482270381] [2020-10-14 10:06:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:34,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:35,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:06:35,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-14 10:06:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:35,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:06:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:06:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:35,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:35,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:35,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:06:35,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482270381] [2020-10-14 10:06:35,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:35,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:35,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983532679] [2020-10-14 10:06:35,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:35,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:35,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:35,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:35,859 INFO L87 Difference]: Start difference. First operand 2273 states and 3862 transitions. Second operand 5 states. [2020-10-14 10:06:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:36,815 INFO L93 Difference]: Finished difference Result 5020 states and 8438 transitions. [2020-10-14 10:06:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:36,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:06:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:36,820 INFO L225 Difference]: With dead ends: 5020 [2020-10-14 10:06:36,820 INFO L226 Difference]: Without dead ends: 2822 [2020-10-14 10:06:36,823 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 [2020-10-14 10:06:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2020-10-14 10:06:36,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2366. [2020-10-14 10:06:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2366 states. [2020-10-14 10:06:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 4009 transitions. [2020-10-14 10:06:36,904 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 4009 transitions. Word has length 106 [2020-10-14 10:06:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:36,905 INFO L479 AbstractCegarLoop]: Abstraction has 2366 states and 4009 transitions. [2020-10-14 10:06:36,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 4009 transitions. [2020-10-14 10:06:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:06:36,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:36,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:36,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 10:06:36,909 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1086548661, now seen corresponding path program 1 times [2020-10-14 10:06:36,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:36,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738809221] [2020-10-14 10:06:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:36,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:37,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:37,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:06:37,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-14 10:06:37,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:37,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:06:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:06:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:37,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:37,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:37,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:37,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:37,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:37,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738809221] [2020-10-14 10:06:37,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:37,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:37,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917254070] [2020-10-14 10:06:37,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:37,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:37,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:37,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:37,553 INFO L87 Difference]: Start difference. First operand 2366 states and 4009 transitions. Second operand 5 states. [2020-10-14 10:06:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:38,525 INFO L93 Difference]: Finished difference Result 5113 states and 8579 transitions. [2020-10-14 10:06:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:38,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:06:38,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:38,531 INFO L225 Difference]: With dead ends: 5113 [2020-10-14 10:06:38,531 INFO L226 Difference]: Without dead ends: 2822 [2020-10-14 10:06:38,534 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 [2020-10-14 10:06:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2020-10-14 10:06:38,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2516. [2020-10-14 10:06:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-10-14 10:06:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 4273 transitions. [2020-10-14 10:06:38,615 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 4273 transitions. Word has length 106 [2020-10-14 10:06:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:38,615 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 4273 transitions. [2020-10-14 10:06:38,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 4273 transitions. [2020-10-14 10:06:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:06:38,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:38,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:38,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 10:06:38,620 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:38,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:38,621 INFO L82 PathProgramCache]: Analyzing trace with hash -885254594, now seen corresponding path program 1 times [2020-10-14 10:06:38,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:38,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737798685] [2020-10-14 10:06:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:38,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:38,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:41,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:06:41,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:41,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3320 [2020-10-14 10:06:41,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:41,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:06:41,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:42,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:42,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:42,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:42,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:42,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:42,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:42,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:42,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:06:42,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737798685] [2020-10-14 10:06:42,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:42,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:42,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368655133] [2020-10-14 10:06:42,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:42,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:42,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:42,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:42,044 INFO L87 Difference]: Start difference. First operand 2516 states and 4273 transitions. Second operand 5 states. [2020-10-14 10:06:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:42,861 INFO L93 Difference]: Finished difference Result 5033 states and 8537 transitions. [2020-10-14 10:06:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:42,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:06:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:42,865 INFO L225 Difference]: With dead ends: 5033 [2020-10-14 10:06:42,865 INFO L226 Difference]: Without dead ends: 2592 [2020-10-14 10:06:42,869 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 [2020-10-14 10:06:42,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2020-10-14 10:06:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2516. [2020-10-14 10:06:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-10-14 10:06:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 4271 transitions. [2020-10-14 10:06:42,923 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 4271 transitions. Word has length 106 [2020-10-14 10:06:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:42,923 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 4271 transitions. [2020-10-14 10:06:42,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 4271 transitions. [2020-10-14 10:06:42,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 10:06:42,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:42,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:42,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 10:06:42,927 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:42,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1438020152, now seen corresponding path program 1 times [2020-10-14 10:06:42,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:42,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544533433] [2020-10-14 10:06:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:42,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:46,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 10:06:46,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3465 [2020-10-14 10:06:46,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:46,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:06:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:46,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:46,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:46,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:06:46,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544533433] [2020-10-14 10:06:46,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:46,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:46,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280270791] [2020-10-14 10:06:46,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:46,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:46,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:46,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:46,476 INFO L87 Difference]: Start difference. First operand 2516 states and 4271 transitions. Second operand 5 states. [2020-10-14 10:06:47,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:47,236 INFO L93 Difference]: Finished difference Result 5013 states and 8510 transitions. [2020-10-14 10:06:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:47,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 10:06:47,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:47,240 INFO L225 Difference]: With dead ends: 5013 [2020-10-14 10:06:47,240 INFO L226 Difference]: Without dead ends: 2572 [2020-10-14 10:06:47,243 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 [2020-10-14 10:06:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2020-10-14 10:06:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2516. [2020-10-14 10:06:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-10-14 10:06:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 4269 transitions. [2020-10-14 10:06:47,295 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 4269 transitions. Word has length 106 [2020-10-14 10:06:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:47,295 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 4269 transitions. [2020-10-14 10:06:47,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:47,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 4269 transitions. [2020-10-14 10:06:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 10:06:47,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:47,298 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] [2020-10-14 10:06:47,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 10:06:47,298 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1560570474, now seen corresponding path program 1 times [2020-10-14 10:06:47,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:47,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381402325] [2020-10-14 10:06:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:48,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 10:06:48,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-10-14 10:06:48,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:48,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:06:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:06:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:48,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:48,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:48,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:48,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:06:48,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381402325] [2020-10-14 10:06:48,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:48,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:48,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84937844] [2020-10-14 10:06:48,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:48,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:48,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:48,742 INFO L87 Difference]: Start difference. First operand 2516 states and 4269 transitions. Second operand 5 states. [2020-10-14 10:06:49,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:49,741 INFO L93 Difference]: Finished difference Result 5251 states and 8821 transitions. [2020-10-14 10:06:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:49,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 10:06:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:49,746 INFO L225 Difference]: With dead ends: 5251 [2020-10-14 10:06:49,746 INFO L226 Difference]: Without dead ends: 2810 [2020-10-14 10:06:49,749 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 [2020-10-14 10:06:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2020-10-14 10:06:49,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2516. [2020-10-14 10:06:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-10-14 10:06:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 4263 transitions. [2020-10-14 10:06:49,805 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 4263 transitions. Word has length 107 [2020-10-14 10:06:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:49,805 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 4263 transitions. [2020-10-14 10:06:49,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 4263 transitions. [2020-10-14 10:06:49,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 10:06:49,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:49,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:49,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 10:06:49,809 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:49,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:49,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1929366203, now seen corresponding path program 1 times [2020-10-14 10:06:49,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:49,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221925853] [2020-10-14 10:06:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:50,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 10:06:50,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-14 10:06:50,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:50,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:06:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:06:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:50,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:50,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:50,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:50,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:50,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:50,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:50,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221925853] [2020-10-14 10:06:50,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:50,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:50,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52772651] [2020-10-14 10:06:50,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:50,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:50,483 INFO L87 Difference]: Start difference. First operand 2516 states and 4263 transitions. Second operand 5 states. [2020-10-14 10:06:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:51,411 INFO L93 Difference]: Finished difference Result 5245 states and 8803 transitions. [2020-10-14 10:06:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:51,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 10:06:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:51,416 INFO L225 Difference]: With dead ends: 5245 [2020-10-14 10:06:51,416 INFO L226 Difference]: Without dead ends: 2804 [2020-10-14 10:06:51,419 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 [2020-10-14 10:06:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2020-10-14 10:06:51,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2522. [2020-10-14 10:06:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2522 states. [2020-10-14 10:06:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 4269 transitions. [2020-10-14 10:06:51,473 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 4269 transitions. Word has length 107 [2020-10-14 10:06:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:51,473 INFO L479 AbstractCegarLoop]: Abstraction has 2522 states and 4269 transitions. [2020-10-14 10:06:51,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 4269 transitions. [2020-10-14 10:06:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 10:06:51,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:51,476 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 10:06:51,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 10:06:51,476 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1799624459, now seen corresponding path program 1 times [2020-10-14 10:06:51,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:51,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059245248] [2020-10-14 10:06:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:55,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 10:06:55,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3747 [2020-10-14 10:06:55,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:55,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:06:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:55,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:55,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:55,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:55,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:55,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:55,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:06:55,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059245248] [2020-10-14 10:06:55,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:55,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:55,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828704738] [2020-10-14 10:06:55,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:55,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:55,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:55,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:55,313 INFO L87 Difference]: Start difference. First operand 2522 states and 4269 transitions. Second operand 5 states. [2020-10-14 10:06:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:56,047 INFO L93 Difference]: Finished difference Result 5009 states and 8482 transitions. [2020-10-14 10:06:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:56,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 10:06:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:56,051 INFO L225 Difference]: With dead ends: 5009 [2020-10-14 10:06:56,051 INFO L226 Difference]: Without dead ends: 2562 [2020-10-14 10:06:56,054 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 [2020-10-14 10:06:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2020-10-14 10:06:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2522. [2020-10-14 10:06:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2522 states. [2020-10-14 10:06:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 4267 transitions. [2020-10-14 10:06:56,106 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 4267 transitions. Word has length 107 [2020-10-14 10:06:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:56,107 INFO L479 AbstractCegarLoop]: Abstraction has 2522 states and 4267 transitions. [2020-10-14 10:06:56,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 4267 transitions. [2020-10-14 10:06:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 10:06:56,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:56,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:56,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 10:06:56,110 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:56,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:56,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1538777712, now seen corresponding path program 1 times [2020-10-14 10:06:56,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:56,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058367163] [2020-10-14 10:06:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:58,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 10:06:58,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2705 [2020-10-14 10:06:58,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:58,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:06:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:06:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:58,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:58,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:58,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:58,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:58,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058367163] [2020-10-14 10:06:58,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:58,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:58,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932395313] [2020-10-14 10:06:58,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:58,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:58,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:58,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:58,901 INFO L87 Difference]: Start difference. First operand 2522 states and 4267 transitions. Second operand 5 states. [2020-10-14 10:06:59,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:59,764 INFO L93 Difference]: Finished difference Result 5251 states and 8801 transitions. [2020-10-14 10:06:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:59,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 10:06:59,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:59,769 INFO L225 Difference]: With dead ends: 5251 [2020-10-14 10:06:59,769 INFO L226 Difference]: Without dead ends: 2804 [2020-10-14 10:06:59,772 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 [2020-10-14 10:06:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2020-10-14 10:06:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2528. [2020-10-14 10:06:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2528 states. [2020-10-14 10:06:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4273 transitions. [2020-10-14 10:06:59,825 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4273 transitions. Word has length 108 [2020-10-14 10:06:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:59,825 INFO L479 AbstractCegarLoop]: Abstraction has 2528 states and 4273 transitions. [2020-10-14 10:06:59,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4273 transitions. [2020-10-14 10:06:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 10:06:59,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:59,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:59,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 10:06:59,829 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:59,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1472307328, now seen corresponding path program 1 times [2020-10-14 10:06:59,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:59,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35309353] [2020-10-14 10:06:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:03,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3214 [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:07:03,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:03,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:03,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:03,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:03,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:03,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:03,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35309353] [2020-10-14 10:07:03,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:03,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:03,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984275768] [2020-10-14 10:07:03,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:03,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:03,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:03,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:03,122 INFO L87 Difference]: Start difference. First operand 2528 states and 4273 transitions. Second operand 5 states. [2020-10-14 10:07:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:03,980 INFO L93 Difference]: Finished difference Result 5233 states and 8773 transitions. [2020-10-14 10:07:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:03,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 10:07:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:03,984 INFO L225 Difference]: With dead ends: 5233 [2020-10-14 10:07:03,985 INFO L226 Difference]: Without dead ends: 2732 [2020-10-14 10:07:03,988 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 [2020-10-14 10:07:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2020-10-14 10:07:04,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2476. [2020-10-14 10:07:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2020-10-14 10:07:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4209 transitions. [2020-10-14 10:07:04,080 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4209 transitions. Word has length 109 [2020-10-14 10:07:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:04,080 INFO L479 AbstractCegarLoop]: Abstraction has 2476 states and 4209 transitions. [2020-10-14 10:07:04,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4209 transitions. [2020-10-14 10:07:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 10:07:04,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:04,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 10:07:04,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 10:07:04,087 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:04,088 INFO L82 PathProgramCache]: Analyzing trace with hash 453019722, now seen corresponding path program 1 times [2020-10-14 10:07:04,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:04,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771375417] [2020-10-14 10:07:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:06,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 10:07:06,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2419 [2020-10-14 10:07:06,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:06,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 10:07:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:06,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:06,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:06,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:06,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:06,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:06,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771375417] [2020-10-14 10:07:06,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:06,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:06,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280775840] [2020-10-14 10:07:06,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:06,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:06,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:06,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:06,626 INFO L87 Difference]: Start difference. First operand 2476 states and 4209 transitions. Second operand 5 states. [2020-10-14 10:07:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:07,681 INFO L93 Difference]: Finished difference Result 5436 states and 9160 transitions. [2020-10-14 10:07:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:07,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-14 10:07:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:07,685 INFO L225 Difference]: With dead ends: 5436 [2020-10-14 10:07:07,685 INFO L226 Difference]: Without dead ends: 3025 [2020-10-14 10:07:07,689 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 [2020-10-14 10:07:07,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2020-10-14 10:07:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2476. [2020-10-14 10:07:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2020-10-14 10:07:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4209 transitions. [2020-10-14 10:07:07,751 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4209 transitions. Word has length 110 [2020-10-14 10:07:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:07,751 INFO L479 AbstractCegarLoop]: Abstraction has 2476 states and 4209 transitions. [2020-10-14 10:07:07,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4209 transitions. [2020-10-14 10:07:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 10:07:07,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:07,756 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-14 10:07:07,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 10:07:07,756 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:07,756 INFO L82 PathProgramCache]: Analyzing trace with hash 660163593, now seen corresponding path program 1 times [2020-10-14 10:07:07,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:07,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284731505] [2020-10-14 10:07:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:10,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:12,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 10:07:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:07:12,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:12,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:07:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:12,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:12,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:12,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:12,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:12,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:12,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:07:12,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284731505] [2020-10-14 10:07:12,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:12,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:12,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334458114] [2020-10-14 10:07:12,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:12,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:12,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:12,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:12,856 INFO L87 Difference]: Start difference. First operand 2476 states and 4209 transitions. Second operand 5 states. [2020-10-14 10:07:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:13,629 INFO L93 Difference]: Finished difference Result 4937 states and 8396 transitions. [2020-10-14 10:07:13,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:13,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 10:07:13,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:13,633 INFO L225 Difference]: With dead ends: 4937 [2020-10-14 10:07:13,633 INFO L226 Difference]: Without dead ends: 2526 [2020-10-14 10:07:13,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-10-14 10:07:13,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2476. [2020-10-14 10:07:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2020-10-14 10:07:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4207 transitions. [2020-10-14 10:07:13,692 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4207 transitions. Word has length 111 [2020-10-14 10:07:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:13,692 INFO L479 AbstractCegarLoop]: Abstraction has 2476 states and 4207 transitions. [2020-10-14 10:07:13,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4207 transitions. [2020-10-14 10:07:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 10:07:13,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:13,697 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:13,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 10:07:13,697 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:13,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1301225445, now seen corresponding path program 1 times [2020-10-14 10:07:13,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:13,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006767915] [2020-10-14 10:07:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:07:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:18,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:18,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:18,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:18,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:18,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:07:18,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006767915] [2020-10-14 10:07:18,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:18,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:18,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229056941] [2020-10-14 10:07:18,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:18,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:18,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:18,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:18,796 INFO L87 Difference]: Start difference. First operand 2476 states and 4207 transitions. Second operand 5 states. [2020-10-14 10:07:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:19,505 INFO L93 Difference]: Finished difference Result 4937 states and 8394 transitions. [2020-10-14 10:07:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:19,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 10:07:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:19,510 INFO L225 Difference]: With dead ends: 4937 [2020-10-14 10:07:19,510 INFO L226 Difference]: Without dead ends: 2526 [2020-10-14 10:07:19,514 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 [2020-10-14 10:07:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-10-14 10:07:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2476. [2020-10-14 10:07:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2020-10-14 10:07:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4205 transitions. [2020-10-14 10:07:19,576 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4205 transitions. Word has length 111 [2020-10-14 10:07:19,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:19,576 INFO L479 AbstractCegarLoop]: Abstraction has 2476 states and 4205 transitions. [2020-10-14 10:07:19,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4205 transitions. [2020-10-14 10:07:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 10:07:19,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:19,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:19,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 10:07:19,580 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:19,580 INFO L82 PathProgramCache]: Analyzing trace with hash 928481660, now seen corresponding path program 1 times [2020-10-14 10:07:19,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:19,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803724538] [2020-10-14 10:07:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:19,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:24,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 10:07:24,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:24,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:07:24,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:24,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:07:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:24,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:24,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:24,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:24,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:24,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:07:24,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803724538] [2020-10-14 10:07:24,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:24,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:24,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424245407] [2020-10-14 10:07:24,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:24,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:24,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:24,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:24,671 INFO L87 Difference]: Start difference. First operand 2476 states and 4205 transitions. Second operand 5 states. [2020-10-14 10:07:25,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:25,424 INFO L93 Difference]: Finished difference Result 4929 states and 8382 transitions. [2020-10-14 10:07:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:25,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 10:07:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:25,429 INFO L225 Difference]: With dead ends: 4929 [2020-10-14 10:07:25,429 INFO L226 Difference]: Without dead ends: 2518 [2020-10-14 10:07:25,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-10-14 10:07:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2476. [2020-10-14 10:07:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2020-10-14 10:07:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4203 transitions. [2020-10-14 10:07:25,491 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4203 transitions. Word has length 112 [2020-10-14 10:07:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:25,492 INFO L479 AbstractCegarLoop]: Abstraction has 2476 states and 4203 transitions. [2020-10-14 10:07:25,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4203 transitions. [2020-10-14 10:07:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 10:07:25,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:25,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:25,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 10:07:25,496 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:25,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1876373038, now seen corresponding path program 1 times [2020-10-14 10:07:25,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:25,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598819477] [2020-10-14 10:07:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:30,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:30,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 10:07:30,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:30,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4781 [2020-10-14 10:07:30,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:30,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:07:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:30,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:30,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:30,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:30,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 10:07:30,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598819477] [2020-10-14 10:07:30,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:30,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:30,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147615743] [2020-10-14 10:07:30,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:30,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:30,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:30,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:30,365 INFO L87 Difference]: Start difference. First operand 2476 states and 4203 transitions. Second operand 5 states. [2020-10-14 10:07:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:31,101 INFO L93 Difference]: Finished difference Result 4921 states and 8370 transitions. [2020-10-14 10:07:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:31,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 10:07:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:31,105 INFO L225 Difference]: With dead ends: 4921 [2020-10-14 10:07:31,106 INFO L226 Difference]: Without dead ends: 2510 [2020-10-14 10:07:31,109 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 [2020-10-14 10:07:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2020-10-14 10:07:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2476. [2020-10-14 10:07:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2020-10-14 10:07:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4201 transitions. [2020-10-14 10:07:31,160 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4201 transitions. Word has length 112 [2020-10-14 10:07:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:31,160 INFO L479 AbstractCegarLoop]: Abstraction has 2476 states and 4201 transitions. [2020-10-14 10:07:31,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4201 transitions. [2020-10-14 10:07:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 10:07:31,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:31,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:31,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 10:07:31,162 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:31,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1699348493, now seen corresponding path program 1 times [2020-10-14 10:07:31,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:31,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085098145] [2020-10-14 10:07:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:33,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:33,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 10:07:33,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1890 [2020-10-14 10:07:33,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:33,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 10:07:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:33,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:33,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:33,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:33,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:33,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:33,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085098145] [2020-10-14 10:07:33,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:33,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:33,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218698408] [2020-10-14 10:07:33,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:33,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:33,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:33,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:33,131 INFO L87 Difference]: Start difference. First operand 2476 states and 4201 transitions. Second operand 5 states. [2020-10-14 10:07:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:34,240 INFO L93 Difference]: Finished difference Result 5436 states and 9152 transitions. [2020-10-14 10:07:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:34,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-14 10:07:34,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:34,244 INFO L225 Difference]: With dead ends: 5436 [2020-10-14 10:07:34,244 INFO L226 Difference]: Without dead ends: 3025 [2020-10-14 10:07:34,247 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 [2020-10-14 10:07:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2020-10-14 10:07:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2476. [2020-10-14 10:07:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2020-10-14 10:07:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4201 transitions. [2020-10-14 10:07:34,321 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4201 transitions. Word has length 113 [2020-10-14 10:07:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:34,322 INFO L479 AbstractCegarLoop]: Abstraction has 2476 states and 4201 transitions. [2020-10-14 10:07:34,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4201 transitions. [2020-10-14 10:07:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 10:07:34,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:34,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:34,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 10:07:34,324 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:34,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1388556206, now seen corresponding path program 1 times [2020-10-14 10:07:34,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:34,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398912816] [2020-10-14 10:07:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:34,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 10:07:34,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:34,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 10:07:34,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:34,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:07:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:34,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:34,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:34,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:34,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 10:07:34,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398912816] [2020-10-14 10:07:34,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:34,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:34,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718404222] [2020-10-14 10:07:34,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:34,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:34,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:34,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:34,721 INFO L87 Difference]: Start difference. First operand 2476 states and 4201 transitions. Second operand 5 states. [2020-10-14 10:07:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:35,450 INFO L93 Difference]: Finished difference Result 4921 states and 8368 transitions. [2020-10-14 10:07:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:35,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-14 10:07:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:35,455 INFO L225 Difference]: With dead ends: 4921 [2020-10-14 10:07:35,456 INFO L226 Difference]: Without dead ends: 2510 [2020-10-14 10:07:35,459 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 [2020-10-14 10:07:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2020-10-14 10:07:35,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2484. [2020-10-14 10:07:35,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2020-10-14 10:07:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 4213 transitions. [2020-10-14 10:07:35,511 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 4213 transitions. Word has length 113 [2020-10-14 10:07:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:35,511 INFO L479 AbstractCegarLoop]: Abstraction has 2484 states and 4213 transitions. [2020-10-14 10:07:35,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 4213 transitions. [2020-10-14 10:07:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 10:07:35,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:35,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:35,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 10:07:35,514 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1853057232, now seen corresponding path program 1 times [2020-10-14 10:07:35,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:35,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427680988] [2020-10-14 10:07:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:35,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:37,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:37,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:37,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:37,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:37,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:07:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:07:37,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427680988] [2020-10-14 10:07:37,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:37,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:37,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914182942] [2020-10-14 10:07:37,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:37,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:37,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:37,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:37,135 INFO L87 Difference]: Start difference. First operand 2484 states and 4213 transitions. Second operand 5 states. [2020-10-14 10:07:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:38,231 INFO L93 Difference]: Finished difference Result 5444 states and 9164 transitions. [2020-10-14 10:07:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:38,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 10:07:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:38,236 INFO L225 Difference]: With dead ends: 5444 [2020-10-14 10:07:38,237 INFO L226 Difference]: Without dead ends: 3033 [2020-10-14 10:07:38,240 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 [2020-10-14 10:07:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2020-10-14 10:07:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 2484. [2020-10-14 10:07:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2020-10-14 10:07:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 4213 transitions. [2020-10-14 10:07:38,297 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 4213 transitions. Word has length 114 [2020-10-14 10:07:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:38,297 INFO L479 AbstractCegarLoop]: Abstraction has 2484 states and 4213 transitions. [2020-10-14 10:07:38,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 4213 transitions. [2020-10-14 10:07:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 10:07:38,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:38,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 10:07:38,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 10:07:38,300 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:38,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:38,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1865502304, now seen corresponding path program 1 times [2020-10-14 10:07:38,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:38,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545059202] [2020-10-14 10:07:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:38,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:38,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 10:07:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 10:07:38,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:38,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:07:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:07:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:38,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:38,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:38,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:38,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:38,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:38,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:38,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 10:07:38,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545059202] [2020-10-14 10:07:38,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:38,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:38,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127929547] [2020-10-14 10:07:38,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:38,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:38,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:38,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:38,802 INFO L87 Difference]: Start difference. First operand 2484 states and 4213 transitions. Second operand 5 states. [2020-10-14 10:07:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:39,562 INFO L93 Difference]: Finished difference Result 4917 states and 8362 transitions. [2020-10-14 10:07:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:39,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 10:07:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:39,567 INFO L225 Difference]: With dead ends: 4917 [2020-10-14 10:07:39,567 INFO L226 Difference]: Without dead ends: 2502 [2020-10-14 10:07:39,570 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 [2020-10-14 10:07:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2020-10-14 10:07:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2482. [2020-10-14 10:07:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2482 states. [2020-10-14 10:07:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 4209 transitions. [2020-10-14 10:07:39,645 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 4209 transitions. Word has length 114 [2020-10-14 10:07:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:39,645 INFO L479 AbstractCegarLoop]: Abstraction has 2482 states and 4209 transitions. [2020-10-14 10:07:39,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 4209 transitions. [2020-10-14 10:07:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 10:07:39,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:39,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:39,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 10:07:39,648 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1213776912, now seen corresponding path program 1 times [2020-10-14 10:07:39,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:39,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160843456] [2020-10-14 10:07:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking...