/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.14.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:41:06,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:41:06,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:41:06,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:41:06,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:41:06,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:41:06,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:41:06,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:41:06,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:41:06,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:41:06,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:41:06,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:41:06,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:41:06,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:41:06,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:41:06,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:41:06,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:41:06,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:41:06,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:41:06,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:41:06,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:41:06,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:41:06,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:41:06,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:41:06,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:41:06,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:41:06,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:41:06,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:41:06,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:41:06,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:41:06,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:41:06,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:41:06,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:41:06,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:41:06,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:41:06,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:41:06,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:41:06,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:41:06,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:41:06,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:41:06,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:41:06,754 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 [2020-10-15 04:41:06,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:41:06,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:41:06,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:41:06,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:41:06,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:41:06,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:41:06,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:41:06,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:41:06,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:41:06,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:41:06,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:41:06,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:41:06,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:41:06,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:41:06,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:41:06,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:41:06,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:41:06,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:41:06,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:41:06,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:41:06,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:41:06,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:41:06,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:41:06,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:41:06,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:41:06,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:41:06,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:41:06,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:41:06,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:41:06,784 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:41:07,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:41:07,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:41:07,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:41:07,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:41:07,106 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:41:07,106 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.14.i.cil-2.c [2020-10-15 04:41:07,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35f3f9757/69dfd9732b2a44b9a4d6697fa4c7f8c0/FLAG35f6b7a35 [2020-10-15 04:41:07,729 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:41:07,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.14.i.cil-2.c [2020-10-15 04:41:07,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35f3f9757/69dfd9732b2a44b9a4d6697fa4c7f8c0/FLAG35f6b7a35 [2020-10-15 04:41:08,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35f3f9757/69dfd9732b2a44b9a4d6697fa4c7f8c0 [2020-10-15 04:41:08,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:41:08,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:41:08,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:41:08,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:41:08,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:41:08,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:41:08" (1/1) ... [2020-10-15 04:41:08,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c10b60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:08, skipping insertion in model container [2020-10-15 04:41:08,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:41:08" (1/1) ... [2020-10-15 04:41:08,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:41:08,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:41:08,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:41:08,898 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:41:09,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:41:09,071 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:41:09,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09 WrapperNode [2020-10-15 04:41:09,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:41:09,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:41:09,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:41:09,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:41:09,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (1/1) ... [2020-10-15 04:41:09,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (1/1) ... [2020-10-15 04:41:09,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (1/1) ... [2020-10-15 04:41:09,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (1/1) ... [2020-10-15 04:41:09,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (1/1) ... [2020-10-15 04:41:09,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (1/1) ... [2020-10-15 04:41:09,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (1/1) ... [2020-10-15 04:41:09,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:41:09,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:41:09,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:41:09,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:41:09,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (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 [2020-10-15 04:41:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:41:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:41:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:41:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:41:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:41:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:41:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:41:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:41:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:41:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:41:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:41:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:41:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:41:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:41:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:41:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:41:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:41:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:41:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:41:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:41:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:41:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:41:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:41:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:41:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:41:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:41:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:41:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:41:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:41:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:41:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:41:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:41:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:41:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:41:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:41:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:41:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:41:09,911 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:41:10,698 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:41:10,699 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:41:10,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:41:10,721 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:41:10,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:41:10 BoogieIcfgContainer [2020-10-15 04:41:10,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:41:10,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:41:10,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:41:10,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:41:10,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:41:08" (1/3) ... [2020-10-15 04:41:10,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a855d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:41:10, skipping insertion in model container [2020-10-15 04:41:10,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:41:09" (2/3) ... [2020-10-15 04:41:10,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a855d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:41:10, skipping insertion in model container [2020-10-15 04:41:10,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:41:10" (3/3) ... [2020-10-15 04:41:10,736 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-2.c [2020-10-15 04:41:10,748 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:41:10,757 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:41:10,772 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:41:10,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:41:10,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:41:10,802 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:41:10,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:41:10,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:41:10,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:41:10,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:41:10,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:41:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-15 04:41:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 04:41:10,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:10,838 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] [2020-10-15 04:41:10,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:10,845 INFO L82 PathProgramCache]: Analyzing trace with hash -212391038, now seen corresponding path program 1 times [2020-10-15 04:41:10,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:10,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651045834] [2020-10-15 04:41:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:11,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:11,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 04:41:11,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:11,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-15 04:41:11,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:11,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:11,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:41:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:41:12,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:12,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:12,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:12,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:41:12,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:12,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:12,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651045834] [2020-10-15 04:41:12,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:12,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:12,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306453041] [2020-10-15 04:41:12,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:12,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:12,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:12,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:12,151 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 5 states. [2020-10-15 04:41:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:13,505 INFO L93 Difference]: Finished difference Result 421 states and 714 transitions. [2020-10-15 04:41:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:13,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-15 04:41:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:13,523 INFO L225 Difference]: With dead ends: 421 [2020-10-15 04:41:13,523 INFO L226 Difference]: Without dead ends: 247 [2020-10-15 04:41:13,528 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 [2020-10-15 04:41:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-15 04:41:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 177. [2020-10-15 04:41:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-15 04:41:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-10-15 04:41:13,588 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 48 [2020-10-15 04:41:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:13,588 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-10-15 04:41:13,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-10-15 04:41:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 04:41:13,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:13,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:13,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:41:13,592 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:13,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:13,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1765539696, now seen corresponding path program 1 times [2020-10-15 04:41:13,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:13,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637789359] [2020-10-15 04:41:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:14,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 04:41:14,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-15 04:41:14,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:14,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:41:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:14,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:14,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:14,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:14,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:41:14,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:14,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:14,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637789359] [2020-10-15 04:41:14,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:14,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:14,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952270012] [2020-10-15 04:41:14,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:14,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:14,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:14,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:14,271 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-10-15 04:41:15,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:15,273 INFO L93 Difference]: Finished difference Result 372 states and 577 transitions. [2020-10-15 04:41:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:15,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-15 04:41:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:15,278 INFO L225 Difference]: With dead ends: 372 [2020-10-15 04:41:15,278 INFO L226 Difference]: Without dead ends: 240 [2020-10-15 04:41:15,281 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 [2020-10-15 04:41:15,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-15 04:41:15,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 178. [2020-10-15 04:41:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-15 04:41:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 283 transitions. [2020-10-15 04:41:15,300 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 283 transitions. Word has length 49 [2020-10-15 04:41:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:15,300 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 283 transitions. [2020-10-15 04:41:15,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:15,301 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 283 transitions. [2020-10-15 04:41:15,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:41:15,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:15,304 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] [2020-10-15 04:41:15,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:41:15,304 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:15,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:15,305 INFO L82 PathProgramCache]: Analyzing trace with hash 342173479, now seen corresponding path program 1 times [2020-10-15 04:41:15,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:15,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677661411] [2020-10-15 04:41:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:16,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:16,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 04:41:16,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:41:16,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-10-15 04:41:16,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:16,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:41:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:41:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:16,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:16,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:16,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:16,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:16,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:16,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677661411] [2020-10-15 04:41:16,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:16,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:16,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429700682] [2020-10-15 04:41:16,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:16,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:16,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:16,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:16,722 INFO L87 Difference]: Start difference. First operand 178 states and 283 transitions. Second operand 5 states. [2020-10-15 04:41:17,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:17,703 INFO L93 Difference]: Finished difference Result 383 states and 604 transitions. [2020-10-15 04:41:17,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:17,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-15 04:41:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:17,706 INFO L225 Difference]: With dead ends: 383 [2020-10-15 04:41:17,706 INFO L226 Difference]: Without dead ends: 251 [2020-10-15 04:41:17,710 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 [2020-10-15 04:41:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-15 04:41:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2020-10-15 04:41:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-15 04:41:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 341 transitions. [2020-10-15 04:41:17,745 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 341 transitions. Word has length 61 [2020-10-15 04:41:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:17,748 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 341 transitions. [2020-10-15 04:41:17,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 341 transitions. [2020-10-15 04:41:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 04:41:17,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:17,754 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] [2020-10-15 04:41:17,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:41:17,755 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1939523751, now seen corresponding path program 1 times [2020-10-15 04:41:17,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:17,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520000908] [2020-10-15 04:41:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:17,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 04:41:22,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4622 [2020-10-15 04:41:22,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:22,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:22,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:41:22,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:22,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:22,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:22,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:22,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:22,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520000908] [2020-10-15 04:41:22,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:22,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:22,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415864590] [2020-10-15 04:41:22,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:22,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:22,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:22,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:22,548 INFO L87 Difference]: Start difference. First operand 210 states and 341 transitions. Second operand 5 states. [2020-10-15 04:41:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:23,617 INFO L93 Difference]: Finished difference Result 483 states and 776 transitions. [2020-10-15 04:41:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:23,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 04:41:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:23,620 INFO L225 Difference]: With dead ends: 483 [2020-10-15 04:41:23,620 INFO L226 Difference]: Without dead ends: 319 [2020-10-15 04:41:23,622 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 [2020-10-15 04:41:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-15 04:41:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 249. [2020-10-15 04:41:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-15 04:41:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 413 transitions. [2020-10-15 04:41:23,636 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 413 transitions. Word has length 62 [2020-10-15 04:41:23,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:23,636 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 413 transitions. [2020-10-15 04:41:23,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 413 transitions. [2020-10-15 04:41:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 04:41:23,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:23,640 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] [2020-10-15 04:41:23,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:41:23,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:23,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1455527453, now seen corresponding path program 1 times [2020-10-15 04:41:23,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:23,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24563296] [2020-10-15 04:41:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:24,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:24,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 04:41:24,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-15 04:41:24,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:24,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:24,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:24,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:24,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:24,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:24,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:24,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:24,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:24,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24563296] [2020-10-15 04:41:24,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:24,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:24,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363749337] [2020-10-15 04:41:24,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:24,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:24,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:24,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:24,088 INFO L87 Difference]: Start difference. First operand 249 states and 413 transitions. Second operand 5 states. [2020-10-15 04:41:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:25,205 INFO L93 Difference]: Finished difference Result 562 states and 921 transitions. [2020-10-15 04:41:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:25,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 04:41:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:25,208 INFO L225 Difference]: With dead ends: 562 [2020-10-15 04:41:25,209 INFO L226 Difference]: Without dead ends: 359 [2020-10-15 04:41:25,210 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 [2020-10-15 04:41:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-15 04:41:25,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 250. [2020-10-15 04:41:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-15 04:41:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 414 transitions. [2020-10-15 04:41:25,220 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 414 transitions. Word has length 62 [2020-10-15 04:41:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:25,221 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 414 transitions. [2020-10-15 04:41:25,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 414 transitions. [2020-10-15 04:41:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:41:25,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:25,228 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] [2020-10-15 04:41:25,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:41:25,228 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:25,229 INFO L82 PathProgramCache]: Analyzing trace with hash -244578581, now seen corresponding path program 1 times [2020-10-15 04:41:25,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:25,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794211960] [2020-10-15 04:41:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:28,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:28,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 04:41:28,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:28,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3613 [2020-10-15 04:41:28,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:28,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:28,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:28,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:28,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:28,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:28,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:28,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:28,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:28,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:28,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:28,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:28,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:28,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:28,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:28,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794211960] [2020-10-15 04:41:28,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:28,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:28,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411468171] [2020-10-15 04:41:28,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:28,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:28,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:28,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:28,960 INFO L87 Difference]: Start difference. First operand 250 states and 414 transitions. Second operand 5 states. [2020-10-15 04:41:29,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:29,951 INFO L93 Difference]: Finished difference Result 556 states and 912 transitions. [2020-10-15 04:41:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:29,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 04:41:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:29,957 INFO L225 Difference]: With dead ends: 556 [2020-10-15 04:41:29,957 INFO L226 Difference]: Without dead ends: 352 [2020-10-15 04:41:29,958 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 [2020-10-15 04:41:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-15 04:41:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 258. [2020-10-15 04:41:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-15 04:41:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 427 transitions. [2020-10-15 04:41:29,969 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 427 transitions. Word has length 63 [2020-10-15 04:41:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:29,969 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 427 transitions. [2020-10-15 04:41:29,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 427 transitions. [2020-10-15 04:41:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:41:29,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:29,971 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] [2020-10-15 04:41:29,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:41:29,971 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:29,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1225973960, now seen corresponding path program 1 times [2020-10-15 04:41:29,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:29,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951266925] [2020-10-15 04:41:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:34,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:34,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 04:41:35,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:41:35,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:41:35,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:35,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:41:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:35,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:35,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:35,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:35,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:35,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:35,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:35,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:35,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951266925] [2020-10-15 04:41:35,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:35,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:35,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325287477] [2020-10-15 04:41:35,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:35,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:35,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:35,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:35,177 INFO L87 Difference]: Start difference. First operand 258 states and 427 transitions. Second operand 5 states. [2020-10-15 04:41:35,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:35,971 INFO L93 Difference]: Finished difference Result 658 states and 1092 transitions. [2020-10-15 04:41:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:35,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 04:41:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:35,976 INFO L225 Difference]: With dead ends: 658 [2020-10-15 04:41:35,977 INFO L226 Difference]: Without dead ends: 414 [2020-10-15 04:41:35,978 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 [2020-10-15 04:41:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-15 04:41:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 259. [2020-10-15 04:41:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 04:41:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 428 transitions. [2020-10-15 04:41:35,995 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 428 transitions. Word has length 63 [2020-10-15 04:41:35,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:35,996 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 428 transitions. [2020-10-15 04:41:35,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 428 transitions. [2020-10-15 04:41:35,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:41:35,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:35,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:35,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:41:35,998 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:35,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1931405365, now seen corresponding path program 1 times [2020-10-15 04:41:35,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:36,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240864896] [2020-10-15 04:41:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:36,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:36,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:36,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 04:41:36,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:36,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-15 04:41:36,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:36,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:36,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:36,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:36,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:36,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:36,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:36,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:36,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:36,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:36,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240864896] [2020-10-15 04:41:36,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:36,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:36,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484798091] [2020-10-15 04:41:36,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:36,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:36,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:36,403 INFO L87 Difference]: Start difference. First operand 259 states and 428 transitions. Second operand 5 states. [2020-10-15 04:41:37,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:37,453 INFO L93 Difference]: Finished difference Result 606 states and 1000 transitions. [2020-10-15 04:41:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:37,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 04:41:37,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:37,456 INFO L225 Difference]: With dead ends: 606 [2020-10-15 04:41:37,456 INFO L226 Difference]: Without dead ends: 361 [2020-10-15 04:41:37,457 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 [2020-10-15 04:41:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-15 04:41:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 259. [2020-10-15 04:41:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 04:41:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 428 transitions. [2020-10-15 04:41:37,466 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 428 transitions. Word has length 63 [2020-10-15 04:41:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:37,467 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 428 transitions. [2020-10-15 04:41:37,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 428 transitions. [2020-10-15 04:41:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 04:41:37,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:37,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:37,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:41:37,469 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:37,469 INFO L82 PathProgramCache]: Analyzing trace with hash 409240186, now seen corresponding path program 1 times [2020-10-15 04:41:37,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:37,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977502474] [2020-10-15 04:41:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:37,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:42,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:41:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:41:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:41:42,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:42,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:41:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:42,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:42,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:42,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:42,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:42,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:42,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:42,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:42,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:42,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977502474] [2020-10-15 04:41:42,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:42,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:42,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584275404] [2020-10-15 04:41:42,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:42,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:42,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:42,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:42,617 INFO L87 Difference]: Start difference. First operand 259 states and 428 transitions. Second operand 5 states. [2020-10-15 04:41:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:43,395 INFO L93 Difference]: Finished difference Result 627 states and 1033 transitions. [2020-10-15 04:41:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:43,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 04:41:43,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:43,398 INFO L225 Difference]: With dead ends: 627 [2020-10-15 04:41:43,399 INFO L226 Difference]: Without dead ends: 382 [2020-10-15 04:41:43,400 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 [2020-10-15 04:41:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-15 04:41:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 259. [2020-10-15 04:41:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 04:41:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 429 transitions. [2020-10-15 04:41:43,409 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 429 transitions. Word has length 64 [2020-10-15 04:41:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:43,409 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 429 transitions. [2020-10-15 04:41:43,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 429 transitions. [2020-10-15 04:41:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 04:41:43,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:43,411 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, 1] [2020-10-15 04:41:43,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:41:43,411 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:43,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1410704048, now seen corresponding path program 1 times [2020-10-15 04:41:43,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:43,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219909998] [2020-10-15 04:41:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:43,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:43,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 04:41:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:41:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-15 04:41:43,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:43,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:41:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:43,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:43,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:43,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:43,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:43,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:43,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219909998] [2020-10-15 04:41:43,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:43,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:43,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125364900] [2020-10-15 04:41:43,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:43,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:43,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:43,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:43,731 INFO L87 Difference]: Start difference. First operand 259 states and 429 transitions. Second operand 5 states. [2020-10-15 04:41:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:44,703 INFO L93 Difference]: Finished difference Result 606 states and 1002 transitions. [2020-10-15 04:41:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:44,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-15 04:41:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:44,707 INFO L225 Difference]: With dead ends: 606 [2020-10-15 04:41:44,707 INFO L226 Difference]: Without dead ends: 361 [2020-10-15 04:41:44,709 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 [2020-10-15 04:41:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-15 04:41:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 259. [2020-10-15 04:41:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 04:41:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 429 transitions. [2020-10-15 04:41:44,724 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 429 transitions. Word has length 65 [2020-10-15 04:41:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:44,724 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 429 transitions. [2020-10-15 04:41:44,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 429 transitions. [2020-10-15 04:41:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:41:44,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:44,732 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, 1] [2020-10-15 04:41:44,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:41:44,732 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:44,733 INFO L82 PathProgramCache]: Analyzing trace with hash -497826610, now seen corresponding path program 1 times [2020-10-15 04:41:44,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:44,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281718526] [2020-10-15 04:41:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:44,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:45,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:45,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:41:45,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-10-15 04:41:45,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:45,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:41:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:45,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:45,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:45,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:45,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:45,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:45,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:45,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:45,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:45,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:45,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281718526] [2020-10-15 04:41:45,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:45,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:45,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909553531] [2020-10-15 04:41:45,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:45,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:45,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:45,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:45,680 INFO L87 Difference]: Start difference. First operand 259 states and 429 transitions. Second operand 5 states. [2020-10-15 04:41:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:46,763 INFO L93 Difference]: Finished difference Result 607 states and 1003 transitions. [2020-10-15 04:41:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:46,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 04:41:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:46,767 INFO L225 Difference]: With dead ends: 607 [2020-10-15 04:41:46,767 INFO L226 Difference]: Without dead ends: 362 [2020-10-15 04:41:46,768 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 [2020-10-15 04:41:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-15 04:41:46,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 259. [2020-10-15 04:41:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 04:41:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 429 transitions. [2020-10-15 04:41:46,777 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 429 transitions. Word has length 70 [2020-10-15 04:41:46,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:46,777 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 429 transitions. [2020-10-15 04:41:46,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:46,778 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 429 transitions. [2020-10-15 04:41:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:41:46,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:46,779 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, 1] [2020-10-15 04:41:46,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:41:46,779 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1869633908, now seen corresponding path program 1 times [2020-10-15 04:41:46,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:46,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546066550] [2020-10-15 04:41:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:48,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:48,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-10-15 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:41:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 04:41:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:48,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:48,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:48,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:48,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:48,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:48,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:48,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:48,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:48,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:48,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546066550] [2020-10-15 04:41:48,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:48,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:48,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404636164] [2020-10-15 04:41:48,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:48,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:48,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:48,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:48,336 INFO L87 Difference]: Start difference. First operand 259 states and 429 transitions. Second operand 5 states. [2020-10-15 04:41:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:49,567 INFO L93 Difference]: Finished difference Result 606 states and 1002 transitions. [2020-10-15 04:41:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:49,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 04:41:49,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:49,569 INFO L225 Difference]: With dead ends: 606 [2020-10-15 04:41:49,570 INFO L226 Difference]: Without dead ends: 361 [2020-10-15 04:41:49,571 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 [2020-10-15 04:41:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-15 04:41:49,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 258. [2020-10-15 04:41:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-15 04:41:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 428 transitions. [2020-10-15 04:41:49,580 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 428 transitions. Word has length 70 [2020-10-15 04:41:49,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:49,580 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 428 transitions. [2020-10-15 04:41:49,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:49,581 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 428 transitions. [2020-10-15 04:41:49,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:41:49,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:49,582 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, 1] [2020-10-15 04:41:49,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:41:49,582 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:49,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:49,583 INFO L82 PathProgramCache]: Analyzing trace with hash -545889728, now seen corresponding path program 1 times [2020-10-15 04:41:49,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:49,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511668747] [2020-10-15 04:41:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:49,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:49,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:49,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:50,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:50,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:41:50,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:50,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-15 04:41:50,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:50,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:50,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:50,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 04:41:50,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:50,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:50,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:50,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:50,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:50,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:50,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:50,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511668747] [2020-10-15 04:41:50,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:50,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:50,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385545025] [2020-10-15 04:41:50,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:50,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:50,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:50,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:50,874 INFO L87 Difference]: Start difference. First operand 258 states and 428 transitions. Second operand 5 states. [2020-10-15 04:41:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:51,863 INFO L93 Difference]: Finished difference Result 604 states and 1000 transitions. [2020-10-15 04:41:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:51,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 04:41:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:51,866 INFO L225 Difference]: With dead ends: 604 [2020-10-15 04:41:51,866 INFO L226 Difference]: Without dead ends: 360 [2020-10-15 04:41:51,868 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 [2020-10-15 04:41:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-15 04:41:51,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 258. [2020-10-15 04:41:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-15 04:41:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 428 transitions. [2020-10-15 04:41:51,878 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 428 transitions. Word has length 70 [2020-10-15 04:41:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:51,878 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 428 transitions. [2020-10-15 04:41:51,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 428 transitions. [2020-10-15 04:41:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:41:51,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:51,880 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] [2020-10-15 04:41:51,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:41:51,881 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:51,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:51,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1233207914, now seen corresponding path program 1 times [2020-10-15 04:41:51,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:51,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062448725] [2020-10-15 04:41:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:51,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:52,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 04:41:52,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-10-15 04:41:52,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:52,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 04:41:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:52,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:52,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:52,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:52,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:52,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062448725] [2020-10-15 04:41:52,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:52,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:52,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619835330] [2020-10-15 04:41:52,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:52,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:52,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:52,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:52,936 INFO L87 Difference]: Start difference. First operand 258 states and 428 transitions. Second operand 5 states. [2020-10-15 04:41:53,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:53,915 INFO L93 Difference]: Finished difference Result 604 states and 1000 transitions. [2020-10-15 04:41:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:53,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:41:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:53,917 INFO L225 Difference]: With dead ends: 604 [2020-10-15 04:41:53,917 INFO L226 Difference]: Without dead ends: 360 [2020-10-15 04:41:53,918 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 [2020-10-15 04:41:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-15 04:41:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 258. [2020-10-15 04:41:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-15 04:41:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 428 transitions. [2020-10-15 04:41:53,927 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 428 transitions. Word has length 73 [2020-10-15 04:41:53,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:53,928 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 428 transitions. [2020-10-15 04:41:53,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:53,928 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 428 transitions. [2020-10-15 04:41:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 04:41:53,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:53,929 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, 1] [2020-10-15 04:41:53,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:41:53,929 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:53,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1370073397, now seen corresponding path program 1 times [2020-10-15 04:41:53,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:53,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852088108] [2020-10-15 04:41:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:54,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:58,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:41:58,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4574 [2020-10-15 04:41:58,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:58,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 04:41:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:58,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:58,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:58,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:41:58,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852088108] [2020-10-15 04:41:58,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:58,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:58,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246531076] [2020-10-15 04:41:58,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:58,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:58,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:58,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:58,586 INFO L87 Difference]: Start difference. First operand 258 states and 428 transitions. Second operand 5 states. [2020-10-15 04:41:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:59,528 INFO L93 Difference]: Finished difference Result 604 states and 1000 transitions. [2020-10-15 04:41:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:59,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-15 04:41:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:59,531 INFO L225 Difference]: With dead ends: 604 [2020-10-15 04:41:59,531 INFO L226 Difference]: Without dead ends: 360 [2020-10-15 04:41:59,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:41:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-15 04:41:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 258. [2020-10-15 04:41:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-15 04:41:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 428 transitions. [2020-10-15 04:41:59,543 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 428 transitions. Word has length 76 [2020-10-15 04:41:59,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:59,544 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 428 transitions. [2020-10-15 04:41:59,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 428 transitions. [2020-10-15 04:41:59,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 04:41:59,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:59,545 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, 1] [2020-10-15 04:41:59,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:41:59,546 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:59,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:59,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2147229612, now seen corresponding path program 1 times [2020-10-15 04:41:59,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:59,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905157671] [2020-10-15 04:41:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:00,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 04:42:00,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-15 04:42:00,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:00,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:00,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:42:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:42:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:42:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:00,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:00,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:00,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:00,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:00,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:00,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:00,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905157671] [2020-10-15 04:42:00,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:00,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:00,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123330385] [2020-10-15 04:42:00,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:00,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:00,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:00,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:00,142 INFO L87 Difference]: Start difference. First operand 258 states and 428 transitions. Second operand 5 states. [2020-10-15 04:42:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:01,185 INFO L93 Difference]: Finished difference Result 593 states and 982 transitions. [2020-10-15 04:42:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:01,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-15 04:42:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:01,188 INFO L225 Difference]: With dead ends: 593 [2020-10-15 04:42:01,188 INFO L226 Difference]: Without dead ends: 349 [2020-10-15 04:42:01,189 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 [2020-10-15 04:42:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-15 04:42:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 282. [2020-10-15 04:42:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-15 04:42:01,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 473 transitions. [2020-10-15 04:42:01,197 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 473 transitions. Word has length 77 [2020-10-15 04:42:01,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:01,198 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 473 transitions. [2020-10-15 04:42:01,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 473 transitions. [2020-10-15 04:42:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 04:42:01,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:01,199 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, 1, 1] [2020-10-15 04:42:01,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:42:01,199 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1728528113, now seen corresponding path program 1 times [2020-10-15 04:42:01,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:01,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952749666] [2020-10-15 04:42:01,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:03,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:03,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2638 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 04:42:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:03,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:03,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:03,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:03,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:03,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:03,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952749666] [2020-10-15 04:42:03,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:03,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:42:03,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980063518] [2020-10-15 04:42:03,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:42:03,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:03,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:42:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:42:03,970 INFO L87 Difference]: Start difference. First operand 282 states and 473 transitions. Second operand 8 states. [2020-10-15 04:42:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:05,757 INFO L93 Difference]: Finished difference Result 925 states and 1541 transitions. [2020-10-15 04:42:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:42:05,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-10-15 04:42:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:05,761 INFO L225 Difference]: With dead ends: 925 [2020-10-15 04:42:05,761 INFO L226 Difference]: Without dead ends: 681 [2020-10-15 04:42:05,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:42:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-15 04:42:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 506. [2020-10-15 04:42:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-15 04:42:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 860 transitions. [2020-10-15 04:42:05,780 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 860 transitions. Word has length 79 [2020-10-15 04:42:05,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:05,780 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 860 transitions. [2020-10-15 04:42:05,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:42:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 860 transitions. [2020-10-15 04:42:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:42:05,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:05,782 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, 1] [2020-10-15 04:42:05,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:42:05,783 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:05,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1640041177, now seen corresponding path program 1 times [2020-10-15 04:42:05,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:05,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920265864] [2020-10-15 04:42:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:06,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:06,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 04:42:06,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-15 04:42:06,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:06,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:42:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:42:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:42:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:06,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:06,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:06,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:06,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:06,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920265864] [2020-10-15 04:42:06,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:06,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:42:06,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043983115] [2020-10-15 04:42:06,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:42:06,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:06,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:42:06,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:42:06,975 INFO L87 Difference]: Start difference. First operand 506 states and 860 transitions. Second operand 4 states. [2020-10-15 04:42:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:07,491 INFO L93 Difference]: Finished difference Result 1436 states and 2448 transitions. [2020-10-15 04:42:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:42:07,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-15 04:42:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:07,496 INFO L225 Difference]: With dead ends: 1436 [2020-10-15 04:42:07,496 INFO L226 Difference]: Without dead ends: 968 [2020-10-15 04:42:07,498 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 [2020-10-15 04:42:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-15 04:42:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 963. [2020-10-15 04:42:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-15 04:42:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1620 transitions. [2020-10-15 04:42:07,528 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1620 transitions. Word has length 80 [2020-10-15 04:42:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:07,529 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1620 transitions. [2020-10-15 04:42:07,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:42:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1620 transitions. [2020-10-15 04:42:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:42:07,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:07,532 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, 1] [2020-10-15 04:42:07,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:42:07,532 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:07,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:07,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1216394455, now seen corresponding path program 1 times [2020-10-15 04:42:07,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:07,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354953237] [2020-10-15 04:42:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:08,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:08,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 04:42:08,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:08,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-15 04:42:08,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:08,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 04:42:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:42:08,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:08,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:08,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:08,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:08,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:08,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:08,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:08,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354953237] [2020-10-15 04:42:08,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:08,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:08,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922223744] [2020-10-15 04:42:08,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:08,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:08,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:08,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:08,568 INFO L87 Difference]: Start difference. First operand 963 states and 1620 transitions. Second operand 5 states. [2020-10-15 04:42:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:09,566 INFO L93 Difference]: Finished difference Result 1818 states and 3019 transitions. [2020-10-15 04:42:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:09,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-15 04:42:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:09,574 INFO L225 Difference]: With dead ends: 1818 [2020-10-15 04:42:09,575 INFO L226 Difference]: Without dead ends: 1347 [2020-10-15 04:42:09,577 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 [2020-10-15 04:42:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-10-15 04:42:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 963. [2020-10-15 04:42:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-15 04:42:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1620 transitions. [2020-10-15 04:42:09,614 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1620 transitions. Word has length 80 [2020-10-15 04:42:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:09,615 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1620 transitions. [2020-10-15 04:42:09,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1620 transitions. [2020-10-15 04:42:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 04:42:09,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:09,617 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, 1, 1] [2020-10-15 04:42:09,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:42:09,617 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash 441689176, now seen corresponding path program 1 times [2020-10-15 04:42:09,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:09,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878462546] [2020-10-15 04:42:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:09,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:10,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 04:42:10,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:10,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-15 04:42:10,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:10,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:42:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:42:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:10,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:10,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:10,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:10,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:10,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:10,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878462546] [2020-10-15 04:42:10,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:10,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:10,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267923071] [2020-10-15 04:42:10,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:10,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:10,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:10,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:10,558 INFO L87 Difference]: Start difference. First operand 963 states and 1620 transitions. Second operand 5 states. [2020-10-15 04:42:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:11,470 INFO L93 Difference]: Finished difference Result 2226 states and 3706 transitions. [2020-10-15 04:42:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:11,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-15 04:42:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:11,483 INFO L225 Difference]: With dead ends: 2226 [2020-10-15 04:42:11,483 INFO L226 Difference]: Without dead ends: 1301 [2020-10-15 04:42:11,485 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 [2020-10-15 04:42:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-10-15 04:42:11,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1111. [2020-10-15 04:42:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-15 04:42:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1892 transitions. [2020-10-15 04:42:11,524 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1892 transitions. Word has length 81 [2020-10-15 04:42:11,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:11,525 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1892 transitions. [2020-10-15 04:42:11,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1892 transitions. [2020-10-15 04:42:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 04:42:11,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:11,530 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, 1, 1, 1] [2020-10-15 04:42:11,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:42:11,531 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1105109935, now seen corresponding path program 1 times [2020-10-15 04:42:11,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:11,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483492512] [2020-10-15 04:42:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:12,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:12,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 04:42:12,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1416 [2020-10-15 04:42:12,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:12,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:42:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:42:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:13,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:13,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:13,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:13,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:13,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:13,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:13,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:13,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:13,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:13,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483492512] [2020-10-15 04:42:13,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:13,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:13,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11922245] [2020-10-15 04:42:13,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:13,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:13,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:13,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:13,028 INFO L87 Difference]: Start difference. First operand 1111 states and 1892 transitions. Second operand 5 states. [2020-10-15 04:42:14,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:14,058 INFO L93 Difference]: Finished difference Result 2040 states and 3427 transitions. [2020-10-15 04:42:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:14,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-15 04:42:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:14,066 INFO L225 Difference]: With dead ends: 2040 [2020-10-15 04:42:14,066 INFO L226 Difference]: Without dead ends: 1495 [2020-10-15 04:42:14,068 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 [2020-10-15 04:42:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2020-10-15 04:42:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1111. [2020-10-15 04:42:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-15 04:42:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1892 transitions. [2020-10-15 04:42:14,104 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1892 transitions. Word has length 82 [2020-10-15 04:42:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:14,104 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1892 transitions. [2020-10-15 04:42:14,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1892 transitions. [2020-10-15 04:42:14,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 04:42:14,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:14,107 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, 1, 1] [2020-10-15 04:42:14,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:42:14,108 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:14,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:14,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1395656928, now seen corresponding path program 1 times [2020-10-15 04:42:14,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:14,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783867886] [2020-10-15 04:42:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:14,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:14,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:14,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 04:42:14,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-15 04:42:14,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:14,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:42:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:42:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:42:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:14,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:14,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:14,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:14,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:14,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:14,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:14,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:14,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:14,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783867886] [2020-10-15 04:42:14,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:14,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:14,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096897631] [2020-10-15 04:42:14,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:14,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:14,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:14,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:14,494 INFO L87 Difference]: Start difference. First operand 1111 states and 1892 transitions. Second operand 5 states. [2020-10-15 04:42:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:15,340 INFO L93 Difference]: Finished difference Result 2252 states and 3812 transitions. [2020-10-15 04:42:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:15,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-15 04:42:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:15,347 INFO L225 Difference]: With dead ends: 2252 [2020-10-15 04:42:15,348 INFO L226 Difference]: Without dead ends: 1179 [2020-10-15 04:42:15,350 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 [2020-10-15 04:42:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-10-15 04:42:15,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1116. [2020-10-15 04:42:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1116 states. [2020-10-15 04:42:15,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1901 transitions. [2020-10-15 04:42:15,379 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1901 transitions. Word has length 83 [2020-10-15 04:42:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:15,380 INFO L479 AbstractCegarLoop]: Abstraction has 1116 states and 1901 transitions. [2020-10-15 04:42:15,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1901 transitions. [2020-10-15 04:42:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 04:42:15,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:15,383 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, 1, 1] [2020-10-15 04:42:15,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:42:15,383 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:15,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:15,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1370344750, now seen corresponding path program 1 times [2020-10-15 04:42:15,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:15,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181190958] [2020-10-15 04:42:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:15,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:15,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:15,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:15,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 04:42:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-15 04:42:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:15,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:42:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:42:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:15,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:15,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:15,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:42:15,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:15,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:15,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181190958] [2020-10-15 04:42:15,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:15,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:15,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434010349] [2020-10-15 04:42:15,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:15,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:15,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:15,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:15,760 INFO L87 Difference]: Start difference. First operand 1116 states and 1901 transitions. Second operand 5 states. [2020-10-15 04:42:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:16,600 INFO L93 Difference]: Finished difference Result 2249 states and 3808 transitions. [2020-10-15 04:42:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:16,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-15 04:42:16,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:16,607 INFO L225 Difference]: With dead ends: 2249 [2020-10-15 04:42:16,607 INFO L226 Difference]: Without dead ends: 1176 [2020-10-15 04:42:16,609 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 [2020-10-15 04:42:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-10-15 04:42:16,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1117. [2020-10-15 04:42:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-10-15 04:42:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1902 transitions. [2020-10-15 04:42:16,637 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1902 transitions. Word has length 84 [2020-10-15 04:42:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:16,637 INFO L479 AbstractCegarLoop]: Abstraction has 1117 states and 1902 transitions. [2020-10-15 04:42:16,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1902 transitions. [2020-10-15 04:42:16,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 04:42:16,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:16,640 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, 1] [2020-10-15 04:42:16,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:42:16,640 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:16,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1906221607, now seen corresponding path program 1 times [2020-10-15 04:42:16,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:16,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530133630] [2020-10-15 04:42:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:16,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:17,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:17,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:17,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 04:42:17,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:17,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-15 04:42:17,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:17,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:42:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 04:42:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:18,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:42:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:18,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:18,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530133630] [2020-10-15 04:42:18,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:18,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:42:18,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62451546] [2020-10-15 04:42:18,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:42:18,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:18,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:42:18,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:42:18,033 INFO L87 Difference]: Start difference. First operand 1117 states and 1902 transitions. Second operand 9 states. [2020-10-15 04:42:20,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:20,913 INFO L93 Difference]: Finished difference Result 2396 states and 4018 transitions. [2020-10-15 04:42:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:42:20,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-15 04:42:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:20,921 INFO L225 Difference]: With dead ends: 2396 [2020-10-15 04:42:20,922 INFO L226 Difference]: Without dead ends: 1851 [2020-10-15 04:42:20,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:42:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-10-15 04:42:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1593. [2020-10-15 04:42:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-10-15 04:42:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2738 transitions. [2020-10-15 04:42:20,966 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2738 transitions. Word has length 90 [2020-10-15 04:42:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:20,966 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 2738 transitions. [2020-10-15 04:42:20,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:42:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2738 transitions. [2020-10-15 04:42:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 04:42:20,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:20,970 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] [2020-10-15 04:42:20,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:42:20,970 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:20,972 INFO L82 PathProgramCache]: Analyzing trace with hash -335965084, now seen corresponding path program 1 times [2020-10-15 04:42:20,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:20,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300163410] [2020-10-15 04:42:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:21,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 04:42:21,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:21,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-15 04:42:21,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:21,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-15 04:42:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:21,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:21,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:21,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:21,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:21,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:21,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300163410] [2020-10-15 04:42:21,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:21,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:21,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415272376] [2020-10-15 04:42:21,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:21,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:21,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:21,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:21,905 INFO L87 Difference]: Start difference. First operand 1593 states and 2738 transitions. Second operand 5 states. [2020-10-15 04:42:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:22,894 INFO L93 Difference]: Finished difference Result 2081 states and 3534 transitions. [2020-10-15 04:42:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:22,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-15 04:42:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:22,902 INFO L225 Difference]: With dead ends: 2081 [2020-10-15 04:42:22,903 INFO L226 Difference]: Without dead ends: 1797 [2020-10-15 04:42:22,904 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 [2020-10-15 04:42:22,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-10-15 04:42:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1593. [2020-10-15 04:42:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-10-15 04:42:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2738 transitions. [2020-10-15 04:42:22,945 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2738 transitions. Word has length 90 [2020-10-15 04:42:22,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:22,945 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 2738 transitions. [2020-10-15 04:42:22,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2738 transitions. [2020-10-15 04:42:22,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 04:42:22,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:22,949 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] [2020-10-15 04:42:22,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:42:22,949 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:22,950 INFO L82 PathProgramCache]: Analyzing trace with hash -389123929, now seen corresponding path program 1 times [2020-10-15 04:42:22,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:22,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025308865] [2020-10-15 04:42:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:27,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:27,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 04:42:27,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:42:27,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:27,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:42:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:28,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:28,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:28,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:28,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:28,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:28,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:28,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025308865] [2020-10-15 04:42:28,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:28,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:28,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970473817] [2020-10-15 04:42:28,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:28,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:28,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:28,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:28,035 INFO L87 Difference]: Start difference. First operand 1593 states and 2738 transitions. Second operand 5 states. [2020-10-15 04:42:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:29,002 INFO L93 Difference]: Finished difference Result 2348 states and 3981 transitions. [2020-10-15 04:42:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:29,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-15 04:42:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:29,009 INFO L225 Difference]: With dead ends: 2348 [2020-10-15 04:42:29,009 INFO L226 Difference]: Without dead ends: 1791 [2020-10-15 04:42:29,011 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 [2020-10-15 04:42:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-10-15 04:42:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1657. [2020-10-15 04:42:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1657 states. [2020-10-15 04:42:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2854 transitions. [2020-10-15 04:42:29,050 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2854 transitions. Word has length 91 [2020-10-15 04:42:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:29,051 INFO L479 AbstractCegarLoop]: Abstraction has 1657 states and 2854 transitions. [2020-10-15 04:42:29,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2854 transitions. [2020-10-15 04:42:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 04:42:29,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:29,055 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, 1, 1] [2020-10-15 04:42:29,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:42:29,055 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:29,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1276945045, now seen corresponding path program 1 times [2020-10-15 04:42:29,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:29,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355437687] [2020-10-15 04:42:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:29,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:30,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 04:42:30,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:30,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:30,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:30,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:30,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:30,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:30,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:30,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:30,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355437687] [2020-10-15 04:42:30,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:30,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:42:30,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234735906] [2020-10-15 04:42:30,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:42:30,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:30,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:42:30,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:42:30,273 INFO L87 Difference]: Start difference. First operand 1657 states and 2854 transitions. Second operand 10 states. [2020-10-15 04:42:33,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:33,524 INFO L93 Difference]: Finished difference Result 2940 states and 4909 transitions. [2020-10-15 04:42:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 04:42:33,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-15 04:42:33,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:33,537 INFO L225 Difference]: With dead ends: 2940 [2020-10-15 04:42:33,538 INFO L226 Difference]: Without dead ends: 2121 [2020-10-15 04:42:33,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:42:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2020-10-15 04:42:33,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1578. [2020-10-15 04:42:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-10-15 04:42:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2708 transitions. [2020-10-15 04:42:33,585 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2708 transitions. Word has length 91 [2020-10-15 04:42:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:33,586 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 2708 transitions. [2020-10-15 04:42:33,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:42:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2708 transitions. [2020-10-15 04:42:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 04:42:33,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:33,590 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, 1] [2020-10-15 04:42:33,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:42:33,590 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:33,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash -194126095, now seen corresponding path program 1 times [2020-10-15 04:42:33,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:33,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184007847] [2020-10-15 04:42:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:33,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:33,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:33,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 04:42:33,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-15 04:42:33,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:33,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:42:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:34,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:34,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:34,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:34,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:34,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:34,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:34,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:34,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:34,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:42:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:34,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184007847] [2020-10-15 04:42:34,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:34,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:34,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006266066] [2020-10-15 04:42:34,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:34,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:34,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:34,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:34,055 INFO L87 Difference]: Start difference. First operand 1578 states and 2708 transitions. Second operand 5 states. [2020-10-15 04:42:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:35,090 INFO L93 Difference]: Finished difference Result 3631 states and 6161 transitions. [2020-10-15 04:42:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:35,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-15 04:42:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:35,099 INFO L225 Difference]: With dead ends: 3631 [2020-10-15 04:42:35,100 INFO L226 Difference]: Without dead ends: 2097 [2020-10-15 04:42:35,103 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 [2020-10-15 04:42:35,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2020-10-15 04:42:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1709. [2020-10-15 04:42:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-10-15 04:42:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2943 transitions. [2020-10-15 04:42:35,141 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2943 transitions. Word has length 91 [2020-10-15 04:42:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:35,141 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2943 transitions. [2020-10-15 04:42:35,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2943 transitions. [2020-10-15 04:42:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 04:42:35,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:35,145 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, 1] [2020-10-15 04:42:35,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:42:35,146 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:35,146 INFO L82 PathProgramCache]: Analyzing trace with hash -500101194, now seen corresponding path program 1 times [2020-10-15 04:42:35,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:35,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078113367] [2020-10-15 04:42:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:36,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:40,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:40,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 04:42:40,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:42:40,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:40,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 04:42:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:40,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:40,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:40,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:40,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-15 04:42:40,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078113367] [2020-10-15 04:42:40,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:40,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:42:40,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391747350] [2020-10-15 04:42:40,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:42:40,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:40,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:42:40,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:42:40,305 INFO L87 Difference]: Start difference. First operand 1709 states and 2943 transitions. Second operand 8 states. [2020-10-15 04:42:41,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:41,871 INFO L93 Difference]: Finished difference Result 4456 states and 7656 transitions. [2020-10-15 04:42:41,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:42:41,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-15 04:42:41,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:41,882 INFO L225 Difference]: With dead ends: 4456 [2020-10-15 04:42:41,882 INFO L226 Difference]: Without dead ends: 2772 [2020-10-15 04:42:41,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:42:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2020-10-15 04:42:41,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2618. [2020-10-15 04:42:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2618 states. [2020-10-15 04:42:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 4535 transitions. [2020-10-15 04:42:41,955 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 4535 transitions. Word has length 92 [2020-10-15 04:42:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:41,955 INFO L479 AbstractCegarLoop]: Abstraction has 2618 states and 4535 transitions. [2020-10-15 04:42:41,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:42:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 4535 transitions. [2020-10-15 04:42:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 04:42:41,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:41,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:41,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:42:41,961 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:41,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:41,962 INFO L82 PathProgramCache]: Analyzing trace with hash -994664184, now seen corresponding path program 1 times [2020-10-15 04:42:41,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:41,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458337833] [2020-10-15 04:42:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:41,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:46,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 04:42:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:42:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:46,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:42:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:47,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:47,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:47,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:42:47,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:47,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:47,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:47,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458337833] [2020-10-15 04:42:47,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:47,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:47,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470148948] [2020-10-15 04:42:47,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:47,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:47,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:47,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:47,053 INFO L87 Difference]: Start difference. First operand 2618 states and 4535 transitions. Second operand 5 states. [2020-10-15 04:42:48,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:48,015 INFO L93 Difference]: Finished difference Result 3586 states and 6125 transitions. [2020-10-15 04:42:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:48,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-15 04:42:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:48,031 INFO L225 Difference]: With dead ends: 3586 [2020-10-15 04:42:48,032 INFO L226 Difference]: Without dead ends: 2964 [2020-10-15 04:42:48,034 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 [2020-10-15 04:42:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-10-15 04:42:48,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2730. [2020-10-15 04:42:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2730 states. [2020-10-15 04:42:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 4735 transitions. [2020-10-15 04:42:48,098 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 4735 transitions. Word has length 93 [2020-10-15 04:42:48,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:48,098 INFO L479 AbstractCegarLoop]: Abstraction has 2730 states and 4735 transitions. [2020-10-15 04:42:48,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 4735 transitions. [2020-10-15 04:42:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 04:42:48,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:48,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:48,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:42:48,104 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1462100663, now seen corresponding path program 1 times [2020-10-15 04:42:48,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:48,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758701424] [2020-10-15 04:42:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:48,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:53,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 04:42:53,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:42:53,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:53,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:42:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 04:42:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:53,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:53,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:53,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:53,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:53,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:53,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:53,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758701424] [2020-10-15 04:42:53,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:53,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:53,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455271741] [2020-10-15 04:42:53,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:53,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:53,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:53,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:53,191 INFO L87 Difference]: Start difference. First operand 2730 states and 4735 transitions. Second operand 5 states. [2020-10-15 04:42:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:54,094 INFO L93 Difference]: Finished difference Result 3626 states and 6195 transitions. [2020-10-15 04:42:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:54,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-15 04:42:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:54,101 INFO L225 Difference]: With dead ends: 3626 [2020-10-15 04:42:54,102 INFO L226 Difference]: Without dead ends: 2948 [2020-10-15 04:42:54,105 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 [2020-10-15 04:42:54,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-10-15 04:42:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2734. [2020-10-15 04:42:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2734 states. [2020-10-15 04:42:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 4739 transitions. [2020-10-15 04:42:54,185 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 4739 transitions. Word has length 94 [2020-10-15 04:42:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:54,185 INFO L479 AbstractCegarLoop]: Abstraction has 2734 states and 4739 transitions. [2020-10-15 04:42:54,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 4739 transitions. [2020-10-15 04:42:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 04:42:54,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:54,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:54,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:42:54,191 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:54,192 INFO L82 PathProgramCache]: Analyzing trace with hash -489955522, now seen corresponding path program 1 times [2020-10-15 04:42:54,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:54,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892988861] [2020-10-15 04:42:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:54,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:54,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:54,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 04:42:54,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:42:54,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-15 04:42:54,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:54,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:42:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:42:54,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:54,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:54,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:54,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:54,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:54,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:54,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:54,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:54,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:42:54,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892988861] [2020-10-15 04:42:54,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:54,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:54,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585690887] [2020-10-15 04:42:54,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:54,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:54,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:54,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:54,614 INFO L87 Difference]: Start difference. First operand 2734 states and 4739 transitions. Second operand 5 states. [2020-10-15 04:42:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:55,661 INFO L93 Difference]: Finished difference Result 6233 states and 10696 transitions. [2020-10-15 04:42:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:55,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-15 04:42:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:55,670 INFO L225 Difference]: With dead ends: 6233 [2020-10-15 04:42:55,670 INFO L226 Difference]: Without dead ends: 3524 [2020-10-15 04:42:55,675 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 [2020-10-15 04:42:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2020-10-15 04:42:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 2734. [2020-10-15 04:42:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2734 states. [2020-10-15 04:42:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 4739 transitions. [2020-10-15 04:42:55,785 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 4739 transitions. Word has length 94 [2020-10-15 04:42:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:55,786 INFO L479 AbstractCegarLoop]: Abstraction has 2734 states and 4739 transitions. [2020-10-15 04:42:55,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 4739 transitions. [2020-10-15 04:42:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 04:42:55,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:55,792 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, 1] [2020-10-15 04:42:55,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 04:42:55,792 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:55,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:55,793 INFO L82 PathProgramCache]: Analyzing trace with hash 650277275, now seen corresponding path program 1 times [2020-10-15 04:42:55,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:55,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546106673] [2020-10-15 04:42:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:55,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:00,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:00,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 04:43:00,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:00,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4607 [2020-10-15 04:43:00,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:00,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:43:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:43:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:00,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:00,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:00,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:00,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:00,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:00,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:00,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:00,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546106673] [2020-10-15 04:43:00,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:00,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:00,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487908361] [2020-10-15 04:43:00,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:00,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:00,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:00,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:00,495 INFO L87 Difference]: Start difference. First operand 2734 states and 4739 transitions. Second operand 5 states. [2020-10-15 04:43:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:01,448 INFO L93 Difference]: Finished difference Result 4180 states and 7155 transitions. [2020-10-15 04:43:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:01,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-15 04:43:01,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:01,456 INFO L225 Difference]: With dead ends: 4180 [2020-10-15 04:43:01,456 INFO L226 Difference]: Without dead ends: 2948 [2020-10-15 04:43:01,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-10-15 04:43:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2766. [2020-10-15 04:43:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2020-10-15 04:43:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4795 transitions. [2020-10-15 04:43:01,547 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4795 transitions. Word has length 97 [2020-10-15 04:43:01,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:01,548 INFO L479 AbstractCegarLoop]: Abstraction has 2766 states and 4795 transitions. [2020-10-15 04:43:01,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4795 transitions. [2020-10-15 04:43:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 04:43:01,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:01,554 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, 1, 1] [2020-10-15 04:43:01,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 04:43:01,554 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:01,554 INFO L82 PathProgramCache]: Analyzing trace with hash -148602779, now seen corresponding path program 1 times [2020-10-15 04:43:01,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:01,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545837679] [2020-10-15 04:43:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:02,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:02,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 04:43:02,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:43:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-15 04:43:02,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:02,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:43:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:43:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:02,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:02,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:02,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:02,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:02,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:02,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:02,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545837679] [2020-10-15 04:43:02,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:02,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:02,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683918056] [2020-10-15 04:43:02,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:02,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:02,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:02,095 INFO L87 Difference]: Start difference. First operand 2766 states and 4795 transitions. Second operand 5 states. [2020-10-15 04:43:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:03,191 INFO L93 Difference]: Finished difference Result 6297 states and 10798 transitions. [2020-10-15 04:43:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:03,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-15 04:43:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:03,199 INFO L225 Difference]: With dead ends: 6297 [2020-10-15 04:43:03,199 INFO L226 Difference]: Without dead ends: 3556 [2020-10-15 04:43:03,204 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 [2020-10-15 04:43:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2020-10-15 04:43:03,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3104. [2020-10-15 04:43:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3104 states. [2020-10-15 04:43:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5409 transitions. [2020-10-15 04:43:03,301 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5409 transitions. Word has length 97 [2020-10-15 04:43:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:03,302 INFO L479 AbstractCegarLoop]: Abstraction has 3104 states and 5409 transitions. [2020-10-15 04:43:03,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:03,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5409 transitions. [2020-10-15 04:43:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 04:43:03,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:03,310 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, 1] [2020-10-15 04:43:03,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 04:43:03,311 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:03,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1292689783, now seen corresponding path program 1 times [2020-10-15 04:43:03,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:03,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014696736] [2020-10-15 04:43:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:08,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 04:43:08,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:08,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:43:08,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:08,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:43:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:43:08,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:08,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:08,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:08,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:08,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:08,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:08,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:08,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:08,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014696736] [2020-10-15 04:43:08,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:08,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:08,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422626856] [2020-10-15 04:43:08,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:08,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:08,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:08,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:08,394 INFO L87 Difference]: Start difference. First operand 3104 states and 5409 transitions. Second operand 5 states. [2020-10-15 04:43:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:09,333 INFO L93 Difference]: Finished difference Result 4686 states and 8075 transitions. [2020-10-15 04:43:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:09,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-15 04:43:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:09,338 INFO L225 Difference]: With dead ends: 4686 [2020-10-15 04:43:09,338 INFO L226 Difference]: Without dead ends: 3306 [2020-10-15 04:43:09,341 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 [2020-10-15 04:43:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2020-10-15 04:43:09,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 3136. [2020-10-15 04:43:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2020-10-15 04:43:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 5465 transitions. [2020-10-15 04:43:09,434 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 5465 transitions. Word has length 98 [2020-10-15 04:43:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:09,434 INFO L479 AbstractCegarLoop]: Abstraction has 3136 states and 5465 transitions. [2020-10-15 04:43:09,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 5465 transitions. [2020-10-15 04:43:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 04:43:09,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:09,443 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, 1, 1] [2020-10-15 04:43:09,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 04:43:09,443 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:09,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1997755411, now seen corresponding path program 1 times [2020-10-15 04:43:09,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:09,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090278170] [2020-10-15 04:43:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:09,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 04:43:09,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:43:09,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-15 04:43:09,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:09,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:43:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:43:09,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:09,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:09,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090278170] [2020-10-15 04:43:09,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:09,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:09,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383742726] [2020-10-15 04:43:09,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:09,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:09,887 INFO L87 Difference]: Start difference. First operand 3136 states and 5465 transitions. Second operand 5 states. [2020-10-15 04:43:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:10,954 INFO L93 Difference]: Finished difference Result 6637 states and 11423 transitions. [2020-10-15 04:43:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:10,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-15 04:43:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:10,958 INFO L225 Difference]: With dead ends: 6637 [2020-10-15 04:43:10,958 INFO L226 Difference]: Without dead ends: 3526 [2020-10-15 04:43:10,962 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 [2020-10-15 04:43:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2020-10-15 04:43:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3102. [2020-10-15 04:43:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3102 states. [2020-10-15 04:43:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 5407 transitions. [2020-10-15 04:43:11,074 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 5407 transitions. Word has length 98 [2020-10-15 04:43:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:11,074 INFO L479 AbstractCegarLoop]: Abstraction has 3102 states and 5407 transitions. [2020-10-15 04:43:11,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 5407 transitions. [2020-10-15 04:43:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 04:43:11,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:11,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:11,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 04:43:11,081 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:11,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1644589364, now seen corresponding path program 1 times [2020-10-15 04:43:11,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:11,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114950905] [2020-10-15 04:43:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:11,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 04:43:11,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-15 04:43:11,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:11,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:43:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:43:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:11,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:11,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:11,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:11,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:11,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:11,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114950905] [2020-10-15 04:43:11,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:11,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:11,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048339938] [2020-10-15 04:43:11,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:11,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:11,741 INFO L87 Difference]: Start difference. First operand 3102 states and 5407 transitions. Second operand 4 states. [2020-10-15 04:43:12,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:12,312 INFO L93 Difference]: Finished difference Result 6200 states and 10856 transitions. [2020-10-15 04:43:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:12,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-15 04:43:12,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:12,318 INFO L225 Difference]: With dead ends: 6200 [2020-10-15 04:43:12,319 INFO L226 Difference]: Without dead ends: 4641 [2020-10-15 04:43:12,322 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 [2020-10-15 04:43:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2020-10-15 04:43:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 4617. [2020-10-15 04:43:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2020-10-15 04:43:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 8043 transitions. [2020-10-15 04:43:12,399 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 8043 transitions. Word has length 100 [2020-10-15 04:43:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:12,400 INFO L479 AbstractCegarLoop]: Abstraction has 4617 states and 8043 transitions. [2020-10-15 04:43:12,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 8043 transitions. [2020-10-15 04:43:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 04:43:12,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:12,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:12,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 04:43:12,405 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:12,406 INFO L82 PathProgramCache]: Analyzing trace with hash 272782066, now seen corresponding path program 1 times [2020-10-15 04:43:12,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:12,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640919735] [2020-10-15 04:43:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:12,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:12,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 04:43:12,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:43:12,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-15 04:43:12,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:12,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:43:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:43:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:12,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:12,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:12,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:12,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:12,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:12,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:12,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640919735] [2020-10-15 04:43:12,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:12,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:12,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700848076] [2020-10-15 04:43:12,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:12,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:12,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:12,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:12,843 INFO L87 Difference]: Start difference. First operand 4617 states and 8043 transitions. Second operand 5 states. [2020-10-15 04:43:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:13,954 INFO L93 Difference]: Finished difference Result 9914 states and 17034 transitions. [2020-10-15 04:43:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:13,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-15 04:43:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:13,961 INFO L225 Difference]: With dead ends: 9914 [2020-10-15 04:43:13,961 INFO L226 Difference]: Without dead ends: 5322 [2020-10-15 04:43:13,967 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 [2020-10-15 04:43:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2020-10-15 04:43:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 4692. [2020-10-15 04:43:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-15 04:43:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 8178 transitions. [2020-10-15 04:43:14,099 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 8178 transitions. Word has length 100 [2020-10-15 04:43:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:14,099 INFO L479 AbstractCegarLoop]: Abstraction has 4692 states and 8178 transitions. [2020-10-15 04:43:14,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 8178 transitions. [2020-10-15 04:43:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 04:43:14,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:14,105 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, 1, 1] [2020-10-15 04:43:14,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 04:43:14,106 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:14,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:14,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1819727104, now seen corresponding path program 1 times [2020-10-15 04:43:14,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:14,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256612942] [2020-10-15 04:43:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:14,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:14,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:14,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 04:43:14,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:43:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-15 04:43:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:14,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:43:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:43:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:14,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:14,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:14,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:14,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:14,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:14,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:14,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:14,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256612942] [2020-10-15 04:43:14,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:14,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:14,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748844515] [2020-10-15 04:43:14,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:14,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:14,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:14,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:14,467 INFO L87 Difference]: Start difference. First operand 4692 states and 8178 transitions. Second operand 5 states. [2020-10-15 04:43:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:15,520 INFO L93 Difference]: Finished difference Result 9944 states and 17104 transitions. [2020-10-15 04:43:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:15,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-15 04:43:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:15,526 INFO L225 Difference]: With dead ends: 9944 [2020-10-15 04:43:15,526 INFO L226 Difference]: Without dead ends: 5277 [2020-10-15 04:43:15,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2020-10-15 04:43:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 4137. [2020-10-15 04:43:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4137 states. [2020-10-15 04:43:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 7173 transitions. [2020-10-15 04:43:15,610 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 7173 transitions. Word has length 101 [2020-10-15 04:43:15,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:15,610 INFO L479 AbstractCegarLoop]: Abstraction has 4137 states and 7173 transitions. [2020-10-15 04:43:15,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:15,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 7173 transitions. [2020-10-15 04:43:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:43:15,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:15,617 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, 1] [2020-10-15 04:43:15,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 04:43:15,617 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash 830669068, now seen corresponding path program 1 times [2020-10-15 04:43:15,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:15,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639318576] [2020-10-15 04:43:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:16,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:16,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 04:43:16,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-15 04:43:16,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:16,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:43:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:43:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:43:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:16,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:16,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:16,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:16,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:16,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:16,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:16,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:16,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-15 04:43:16,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639318576] [2020-10-15 04:43:16,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:16,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:16,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736923425] [2020-10-15 04:43:16,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:16,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:16,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:16,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:16,879 INFO L87 Difference]: Start difference. First operand 4137 states and 7173 transitions. Second operand 5 states. [2020-10-15 04:43:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:17,602 INFO L93 Difference]: Finished difference Result 6022 states and 10407 transitions. [2020-10-15 04:43:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:17,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-15 04:43:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:17,607 INFO L225 Difference]: With dead ends: 6022 [2020-10-15 04:43:17,607 INFO L226 Difference]: Without dead ends: 4155 [2020-10-15 04:43:17,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4155 states. [2020-10-15 04:43:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4155 to 4147. [2020-10-15 04:43:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4147 states. [2020-10-15 04:43:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 7185 transitions. [2020-10-15 04:43:17,680 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 7185 transitions. Word has length 104 [2020-10-15 04:43:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:17,680 INFO L479 AbstractCegarLoop]: Abstraction has 4147 states and 7185 transitions. [2020-10-15 04:43:17,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 7185 transitions. [2020-10-15 04:43:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 04:43:17,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:17,685 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, 1, 1] [2020-10-15 04:43:17,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 04:43:17,685 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:17,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:17,685 INFO L82 PathProgramCache]: Analyzing trace with hash 60396125, now seen corresponding path program 1 times [2020-10-15 04:43:17,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:17,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759051519] [2020-10-15 04:43:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:17,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:18,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:22,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:22,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 04:43:22,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:43:22,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:22,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 04:43:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:43:22,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:23,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:23,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:23,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:23,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:23,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:23,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759051519] [2020-10-15 04:43:23,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:23,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:43:23,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624745306] [2020-10-15 04:43:23,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:43:23,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:23,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:43:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:43:23,403 INFO L87 Difference]: Start difference. First operand 4147 states and 7185 transitions. Second operand 10 states. [2020-10-15 04:43:26,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:26,535 INFO L93 Difference]: Finished difference Result 8990 states and 15373 transitions. [2020-10-15 04:43:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:43:26,536 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-10-15 04:43:26,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:26,544 INFO L225 Difference]: With dead ends: 8990 [2020-10-15 04:43:26,544 INFO L226 Difference]: Without dead ends: 6371 [2020-10-15 04:43:26,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:43:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6371 states. [2020-10-15 04:43:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6371 to 5965. [2020-10-15 04:43:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5965 states. [2020-10-15 04:43:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5965 states to 5965 states and 10322 transitions. [2020-10-15 04:43:26,697 INFO L78 Accepts]: Start accepts. Automaton has 5965 states and 10322 transitions. Word has length 105 [2020-10-15 04:43:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:26,697 INFO L479 AbstractCegarLoop]: Abstraction has 5965 states and 10322 transitions. [2020-10-15 04:43:26,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:43:26,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5965 states and 10322 transitions. [2020-10-15 04:43:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 04:43:26,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:26,703 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, 1, 1] [2020-10-15 04:43:26,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 04:43:26,703 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:26,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1408243749, now seen corresponding path program 2 times [2020-10-15 04:43:26,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:26,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606656979] [2020-10-15 04:43:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:31,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:31,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 04:43:31,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:43:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:43:31,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:31,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 04:43:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:43:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:32,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:32,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606656979] [2020-10-15 04:43:32,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:32,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:43:32,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931293637] [2020-10-15 04:43:32,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:43:32,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:32,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:43:32,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:43:32,242 INFO L87 Difference]: Start difference. First operand 5965 states and 10322 transitions. Second operand 12 states. [2020-10-15 04:43:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:36,271 INFO L93 Difference]: Finished difference Result 9916 states and 16956 transitions. [2020-10-15 04:43:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:43:36,271 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2020-10-15 04:43:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:36,279 INFO L225 Difference]: With dead ends: 9916 [2020-10-15 04:43:36,280 INFO L226 Difference]: Without dead ends: 7120 [2020-10-15 04:43:36,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:43:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2020-10-15 04:43:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 6085. [2020-10-15 04:43:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6085 states. [2020-10-15 04:43:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 10517 transitions. [2020-10-15 04:43:36,405 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 10517 transitions. Word has length 105 [2020-10-15 04:43:36,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:36,405 INFO L479 AbstractCegarLoop]: Abstraction has 6085 states and 10517 transitions. [2020-10-15 04:43:36,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:43:36,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 10517 transitions. [2020-10-15 04:43:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 04:43:36,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:36,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:36,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 04:43:36,412 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:36,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1497378110, now seen corresponding path program 1 times [2020-10-15 04:43:36,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:36,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208238145] [2020-10-15 04:43:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:41,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:41,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 04:43:41,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:43:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:43:41,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:41,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:43:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 04:43:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:41,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:41,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:41,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:41,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:43:41,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:41,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:43:41,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208238145] [2020-10-15 04:43:41,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:41,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:43:41,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595417337] [2020-10-15 04:43:41,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:43:41,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:41,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:43:41,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:43:41,648 INFO L87 Difference]: Start difference. First operand 6085 states and 10517 transitions. Second operand 9 states. [2020-10-15 04:43:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:43,622 INFO L93 Difference]: Finished difference Result 9876 states and 16832 transitions. [2020-10-15 04:43:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:43:43,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-15 04:43:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:43,632 INFO L225 Difference]: With dead ends: 9876 [2020-10-15 04:43:43,632 INFO L226 Difference]: Without dead ends: 6960 [2020-10-15 04:43:43,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:43:43,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2020-10-15 04:43:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 3779. [2020-10-15 04:43:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3779 states. [2020-10-15 04:43:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 6492 transitions. [2020-10-15 04:43:43,738 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 6492 transitions. Word has length 107 [2020-10-15 04:43:43,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:43,739 INFO L479 AbstractCegarLoop]: Abstraction has 3779 states and 6492 transitions. [2020-10-15 04:43:43,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:43:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 6492 transitions. [2020-10-15 04:43:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 04:43:43,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:43,743 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, 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] [2020-10-15 04:43:43,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 04:43:43,743 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:43,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2039656911, now seen corresponding path program 1 times [2020-10-15 04:43:43,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:43,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733136165] [2020-10-15 04:43:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:43,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:43,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:48,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:48,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 04:43:48,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:43:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:43:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:48,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:43:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 04:43:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:48,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:48,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:48,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:48,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:48,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 04:43:48,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733136165] [2020-10-15 04:43:48,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:48,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:43:48,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376302446] [2020-10-15 04:43:48,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:43:48,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:48,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:43:48,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:43:48,914 INFO L87 Difference]: Start difference. First operand 3779 states and 6492 transitions. Second operand 9 states. [2020-10-15 04:43:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:50,440 INFO L93 Difference]: Finished difference Result 6955 states and 11868 transitions. [2020-10-15 04:43:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:43:50,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-10-15 04:43:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:50,446 INFO L225 Difference]: With dead ends: 6955 [2020-10-15 04:43:50,447 INFO L226 Difference]: Without dead ends: 4042 [2020-10-15 04:43:50,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:43:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4042 states. [2020-10-15 04:43:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4042 to 3058. [2020-10-15 04:43:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3058 states. [2020-10-15 04:43:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 5227 transitions. [2020-10-15 04:43:50,522 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 5227 transitions. Word has length 111 [2020-10-15 04:43:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:50,522 INFO L479 AbstractCegarLoop]: Abstraction has 3058 states and 5227 transitions. [2020-10-15 04:43:50,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:43:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 5227 transitions. [2020-10-15 04:43:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 04:43:50,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:50,525 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:43:50,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 04:43:50,526 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:50,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1995223577, now seen corresponding path program 1 times [2020-10-15 04:43:50,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:50,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923829794] [2020-10-15 04:43:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:51,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:51,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 04:43:51,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1238 [2020-10-15 04:43:51,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:51,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:43:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:43:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:51,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:51,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:51,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:51,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:43:51,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923829794] [2020-10-15 04:43:51,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:51,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:51,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101175670] [2020-10-15 04:43:51,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:51,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:51,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:51,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:51,884 INFO L87 Difference]: Start difference. First operand 3058 states and 5227 transitions. Second operand 5 states. [2020-10-15 04:43:53,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:53,085 INFO L93 Difference]: Finished difference Result 6934 states and 11719 transitions. [2020-10-15 04:43:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:53,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-15 04:43:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:53,090 INFO L225 Difference]: With dead ends: 6934 [2020-10-15 04:43:53,090 INFO L226 Difference]: Without dead ends: 3907 [2020-10-15 04:43:53,094 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 [2020-10-15 04:43:53,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2020-10-15 04:43:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3355. [2020-10-15 04:43:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3355 states. [2020-10-15 04:43:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 5758 transitions. [2020-10-15 04:43:53,197 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 5758 transitions. Word has length 113 [2020-10-15 04:43:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:53,198 INFO L479 AbstractCegarLoop]: Abstraction has 3355 states and 5758 transitions. [2020-10-15 04:43:53,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 5758 transitions. [2020-10-15 04:43:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 04:43:53,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:53,200 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:43:53,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 04:43:53,201 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:53,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1807117545, now seen corresponding path program 1 times [2020-10-15 04:43:53,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:53,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633327433] [2020-10-15 04:43:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:53,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 04:43:55,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2718 [2020-10-15 04:43:55,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:55,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:43:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:43:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:55,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:55,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:55,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:55,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:55,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:55,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:43:56,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633327433] [2020-10-15 04:43:56,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:56,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:56,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278772993] [2020-10-15 04:43:56,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:56,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:56,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:56,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:56,015 INFO L87 Difference]: Start difference. First operand 3355 states and 5758 transitions. Second operand 5 states. [2020-10-15 04:43:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:57,235 INFO L93 Difference]: Finished difference Result 7519 states and 12772 transitions. [2020-10-15 04:43:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:57,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-15 04:43:57,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:57,241 INFO L225 Difference]: With dead ends: 7519 [2020-10-15 04:43:57,241 INFO L226 Difference]: Without dead ends: 4195 [2020-10-15 04:43:57,246 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 [2020-10-15 04:43:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2020-10-15 04:43:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 3346. [2020-10-15 04:43:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3346 states. [2020-10-15 04:43:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 5749 transitions. [2020-10-15 04:43:57,325 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 5749 transitions. Word has length 113 [2020-10-15 04:43:57,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:57,325 INFO L479 AbstractCegarLoop]: Abstraction has 3346 states and 5749 transitions. [2020-10-15 04:43:57,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 5749 transitions. [2020-10-15 04:43:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 04:43:57,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:57,328 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:43:57,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 04:43:57,329 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:57,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:57,329 INFO L82 PathProgramCache]: Analyzing trace with hash -486615245, now seen corresponding path program 1 times [2020-10-15 04:43:57,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:57,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732412063] [2020-10-15 04:43:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:57,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:59,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:59,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 04:43:59,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2190 [2020-10-15 04:43:59,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:59,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:43:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:43:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:59,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:59,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:59,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:59,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:59,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:59,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 04:43:59,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732412063] [2020-10-15 04:43:59,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:59,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:59,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111387113] [2020-10-15 04:43:59,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:59,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:59,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:59,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:59,595 INFO L87 Difference]: Start difference. First operand 3346 states and 5749 transitions. Second operand 5 states. [2020-10-15 04:44:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:00,720 INFO L93 Difference]: Finished difference Result 7501 states and 12754 transitions. [2020-10-15 04:44:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:00,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-15 04:44:00,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:00,725 INFO L225 Difference]: With dead ends: 7501 [2020-10-15 04:44:00,725 INFO L226 Difference]: Without dead ends: 4186 [2020-10-15 04:44:00,729 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 [2020-10-15 04:44:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2020-10-15 04:44:00,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 3346. [2020-10-15 04:44:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3346 states. [2020-10-15 04:44:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 5749 transitions. [2020-10-15 04:44:00,823 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 5749 transitions. Word has length 113 [2020-10-15 04:44:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:00,824 INFO L479 AbstractCegarLoop]: Abstraction has 3346 states and 5749 transitions. [2020-10-15 04:44:00,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 5749 transitions. [2020-10-15 04:44:00,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 04:44:00,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:00,826 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-10-15 04:44:00,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 04:44:00,826 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:00,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:00,827 INFO L82 PathProgramCache]: Analyzing trace with hash -426517985, now seen corresponding path program 1 times [2020-10-15 04:44:00,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:00,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246864493] [2020-10-15 04:44:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:00,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:02,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 04:44:02,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1892 [2020-10-15 04:44:02,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:02,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-15 04:44:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 04:44:02,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:02,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:02,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:02,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:44:02,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:02,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 04:44:02,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246864493] [2020-10-15 04:44:02,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:02,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:02,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408102404] [2020-10-15 04:44:02,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:02,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:02,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:02,794 INFO L87 Difference]: Start difference. First operand 3346 states and 5749 transitions. Second operand 5 states. [2020-10-15 04:44:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:03,845 INFO L93 Difference]: Finished difference Result 7258 states and 12396 transitions. [2020-10-15 04:44:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:03,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-15 04:44:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:03,850 INFO L225 Difference]: With dead ends: 7258 [2020-10-15 04:44:03,850 INFO L226 Difference]: Without dead ends: 3943 [2020-10-15 04:44:03,855 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 [2020-10-15 04:44:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2020-10-15 04:44:03,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3613. [2020-10-15 04:44:03,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2020-10-15 04:44:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 6232 transitions. [2020-10-15 04:44:03,941 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 6232 transitions. Word has length 116 [2020-10-15 04:44:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:03,941 INFO L479 AbstractCegarLoop]: Abstraction has 3613 states and 6232 transitions. [2020-10-15 04:44:03,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 6232 transitions. [2020-10-15 04:44:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 04:44:03,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:03,944 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, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:44:03,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 04:44:03,944 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:03,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1797803191, now seen corresponding path program 1 times [2020-10-15 04:44:03,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:03,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37176096] [2020-10-15 04:44:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:03,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:07,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:07,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 04:44:07,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3534 [2020-10-15 04:44:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:07,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 04:44:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 04:44:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:07,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:07,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:07,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:07,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:07,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37176096] [2020-10-15 04:44:07,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:07,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:44:07,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914562825] [2020-10-15 04:44:07,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:44:07,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:07,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:44:07,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:44:07,683 INFO L87 Difference]: Start difference. First operand 3613 states and 6232 transitions. Second operand 9 states. [2020-10-15 04:44:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:10,963 INFO L93 Difference]: Finished difference Result 10555 states and 18165 transitions. [2020-10-15 04:44:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:44:10,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-10-15 04:44:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:10,973 INFO L225 Difference]: With dead ends: 10555 [2020-10-15 04:44:10,973 INFO L226 Difference]: Without dead ends: 6973 [2020-10-15 04:44:10,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:44:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2020-10-15 04:44:11,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6610. [2020-10-15 04:44:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6610 states. [2020-10-15 04:44:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 11496 transitions. [2020-10-15 04:44:11,153 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 11496 transitions. Word has length 117 [2020-10-15 04:44:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:11,153 INFO L479 AbstractCegarLoop]: Abstraction has 6610 states and 11496 transitions. [2020-10-15 04:44:11,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:44:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 11496 transitions. [2020-10-15 04:44:11,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 04:44:11,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:11,159 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, 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] [2020-10-15 04:44:11,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 04:44:11,159 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:11,160 INFO L82 PathProgramCache]: Analyzing trace with hash -439036655, now seen corresponding path program 1 times [2020-10-15 04:44:11,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:11,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719840332] [2020-10-15 04:44:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:12,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 04:44:12,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:44:12,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-15 04:44:12,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:12,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:12,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:12,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:44:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:44:12,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:12,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:12,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:12,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:12,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:12,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:12,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:12,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:12,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:12,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:12,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:12,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719840332] [2020-10-15 04:44:12,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:12,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:12,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126416210] [2020-10-15 04:44:12,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:12,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:12,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:12,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:12,809 INFO L87 Difference]: Start difference. First operand 6610 states and 11496 transitions. Second operand 5 states. [2020-10-15 04:44:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:14,189 INFO L93 Difference]: Finished difference Result 14736 states and 25353 transitions. [2020-10-15 04:44:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:14,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 04:44:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:14,199 INFO L225 Difference]: With dead ends: 14736 [2020-10-15 04:44:14,199 INFO L226 Difference]: Without dead ends: 8161 [2020-10-15 04:44:14,206 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 [2020-10-15 04:44:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2020-10-15 04:44:14,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 7294. [2020-10-15 04:44:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7294 states. [2020-10-15 04:44:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 12720 transitions. [2020-10-15 04:44:14,403 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 12720 transitions. Word has length 118 [2020-10-15 04:44:14,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:14,403 INFO L479 AbstractCegarLoop]: Abstraction has 7294 states and 12720 transitions. [2020-10-15 04:44:14,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:14,403 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 12720 transitions. [2020-10-15 04:44:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 04:44:14,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:14,409 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, 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] [2020-10-15 04:44:14,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 04:44:14,409 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:14,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:14,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1295067795, now seen corresponding path program 1 times [2020-10-15 04:44:14,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:14,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781525907] [2020-10-15 04:44:14,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:18,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:18,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 04:44:18,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4069 [2020-10-15 04:44:18,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:18,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:44:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:44:18,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:18,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:18,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:18,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:18,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:18,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:18,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:18,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:18,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781525907] [2020-10-15 04:44:18,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:18,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:18,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837994060] [2020-10-15 04:44:18,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:18,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:18,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:18,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:18,585 INFO L87 Difference]: Start difference. First operand 7294 states and 12720 transitions. Second operand 5 states. [2020-10-15 04:44:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:20,025 INFO L93 Difference]: Finished difference Result 16086 states and 27783 transitions. [2020-10-15 04:44:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:20,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 04:44:20,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:20,035 INFO L225 Difference]: With dead ends: 16086 [2020-10-15 04:44:20,035 INFO L226 Difference]: Without dead ends: 8827 [2020-10-15 04:44:20,042 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 [2020-10-15 04:44:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8827 states. [2020-10-15 04:44:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8827 to 7276. [2020-10-15 04:44:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7276 states. [2020-10-15 04:44:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 12702 transitions. [2020-10-15 04:44:20,242 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 12702 transitions. Word has length 118 [2020-10-15 04:44:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:20,242 INFO L479 AbstractCegarLoop]: Abstraction has 7276 states and 12702 transitions. [2020-10-15 04:44:20,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 12702 transitions. [2020-10-15 04:44:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 04:44:20,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:20,248 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, 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] [2020-10-15 04:44:20,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 04:44:20,248 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:20,249 INFO L82 PathProgramCache]: Analyzing trace with hash -846252707, now seen corresponding path program 1 times [2020-10-15 04:44:20,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:20,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187928452] [2020-10-15 04:44:20,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:20,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:22,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 04:44:22,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2620 [2020-10-15 04:44:22,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:22,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:44:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:44:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:22,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:22,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:22,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:44:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:22,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:22,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187928452] [2020-10-15 04:44:22,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:22,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:22,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336686078] [2020-10-15 04:44:22,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:22,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:22,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:22,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:22,956 INFO L87 Difference]: Start difference. First operand 7276 states and 12702 transitions. Second operand 5 states. [2020-10-15 04:44:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:24,263 INFO L93 Difference]: Finished difference Result 15474 states and 26703 transitions. [2020-10-15 04:44:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:24,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 04:44:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:24,273 INFO L225 Difference]: With dead ends: 15474 [2020-10-15 04:44:24,273 INFO L226 Difference]: Without dead ends: 8233 [2020-10-15 04:44:24,280 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 [2020-10-15 04:44:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8233 states. [2020-10-15 04:44:24,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8233 to 6700. [2020-10-15 04:44:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6700 states. [2020-10-15 04:44:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 11658 transitions. [2020-10-15 04:44:24,461 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 11658 transitions. Word has length 118 [2020-10-15 04:44:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:24,461 INFO L479 AbstractCegarLoop]: Abstraction has 6700 states and 11658 transitions. [2020-10-15 04:44:24,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 11658 transitions. [2020-10-15 04:44:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 04:44:24,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:24,468 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, 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] [2020-10-15 04:44:24,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 04:44:24,468 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:24,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1883696321, now seen corresponding path program 1 times [2020-10-15 04:44:24,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:24,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943196307] [2020-10-15 04:44:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:24,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:24,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:26,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:26,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 04:44:26,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:44:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-15 04:44:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:26,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:44:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:44:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:26,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:26,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:26,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:26,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:26,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:26,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:26,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943196307] [2020-10-15 04:44:26,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:26,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:26,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74792503] [2020-10-15 04:44:26,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:26,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:26,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:26,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:26,148 INFO L87 Difference]: Start difference. First operand 6700 states and 11658 transitions. Second operand 5 states. [2020-10-15 04:44:27,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:27,568 INFO L93 Difference]: Finished difference Result 14862 states and 25599 transitions. [2020-10-15 04:44:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:27,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 04:44:27,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:27,578 INFO L225 Difference]: With dead ends: 14862 [2020-10-15 04:44:27,579 INFO L226 Difference]: Without dead ends: 8197 [2020-10-15 04:44:27,584 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 [2020-10-15 04:44:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8197 states. [2020-10-15 04:44:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8197 to 6712. [2020-10-15 04:44:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6712 states. [2020-10-15 04:44:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6712 states to 6712 states and 11670 transitions. [2020-10-15 04:44:27,765 INFO L78 Accepts]: Start accepts. Automaton has 6712 states and 11670 transitions. Word has length 119 [2020-10-15 04:44:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:27,765 INFO L479 AbstractCegarLoop]: Abstraction has 6712 states and 11670 transitions. [2020-10-15 04:44:27,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 6712 states and 11670 transitions. [2020-10-15 04:44:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 04:44:27,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:27,771 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, 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] [2020-10-15 04:44:27,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 04:44:27,772 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:27,772 INFO L82 PathProgramCache]: Analyzing trace with hash -193640577, now seen corresponding path program 1 times [2020-10-15 04:44:27,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:27,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833446924] [2020-10-15 04:44:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:31,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:31,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 04:44:31,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3438 [2020-10-15 04:44:31,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:31,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:44:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 04:44:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:44:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:31,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:31,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:31,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:31,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:31,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:31,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:31,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:31,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833446924] [2020-10-15 04:44:31,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:31,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:31,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652749768] [2020-10-15 04:44:31,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:31,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:31,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:31,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:31,308 INFO L87 Difference]: Start difference. First operand 6712 states and 11670 transitions. Second operand 5 states. [2020-10-15 04:44:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:32,789 INFO L93 Difference]: Finished difference Result 14868 states and 25605 transitions. [2020-10-15 04:44:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:32,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 04:44:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:32,800 INFO L225 Difference]: With dead ends: 14868 [2020-10-15 04:44:32,800 INFO L226 Difference]: Without dead ends: 8191 [2020-10-15 04:44:32,807 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 [2020-10-15 04:44:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8191 states. [2020-10-15 04:44:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8191 to 6694. [2020-10-15 04:44:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6694 states. [2020-10-15 04:44:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6694 states to 6694 states and 11652 transitions. [2020-10-15 04:44:32,990 INFO L78 Accepts]: Start accepts. Automaton has 6694 states and 11652 transitions. Word has length 119 [2020-10-15 04:44:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:32,990 INFO L479 AbstractCegarLoop]: Abstraction has 6694 states and 11652 transitions. [2020-10-15 04:44:32,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:32,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6694 states and 11652 transitions. [2020-10-15 04:44:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 04:44:32,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:32,996 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, 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] [2020-10-15 04:44:32,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 04:44:32,996 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:32,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2144900597, now seen corresponding path program 1 times [2020-10-15 04:44:32,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:32,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185801823] [2020-10-15 04:44:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:33,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:35,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:35,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 04:44:35,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2515 [2020-10-15 04:44:35,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:35,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:44:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:44:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:35,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:35,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:44:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:35,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:44:35,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185801823] [2020-10-15 04:44:35,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:35,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:35,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183866607] [2020-10-15 04:44:35,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:35,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:35,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:35,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:35,600 INFO L87 Difference]: Start difference. First operand 6694 states and 11652 transitions. Second operand 5 states. [2020-10-15 04:44:36,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:36,948 INFO L93 Difference]: Finished difference Result 14166 states and 24363 transitions. [2020-10-15 04:44:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:36,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 04:44:36,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:36,958 INFO L225 Difference]: With dead ends: 14166 [2020-10-15 04:44:36,958 INFO L226 Difference]: Without dead ends: 7507 [2020-10-15 04:44:36,965 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 [2020-10-15 04:44:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7507 states. [2020-10-15 04:44:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7507 to 6028. [2020-10-15 04:44:37,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6028 states. [2020-10-15 04:44:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 10446 transitions. [2020-10-15 04:44:37,143 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 10446 transitions. Word has length 119 [2020-10-15 04:44:37,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:37,144 INFO L479 AbstractCegarLoop]: Abstraction has 6028 states and 10446 transitions. [2020-10-15 04:44:37,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 10446 transitions. [2020-10-15 04:44:37,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 04:44:37,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:37,148 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:44:37,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 04:44:37,148 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:37,149 INFO L82 PathProgramCache]: Analyzing trace with hash 979606216, now seen corresponding path program 1 times [2020-10-15 04:44:37,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:37,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381519543] [2020-10-15 04:44:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:42,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:42,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 04:44:42,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:42,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:44:42,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:42,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:44:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 04:44:42,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:42,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:42,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:42,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:42,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:42,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:42,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:44:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-15 04:44:42,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381519543] [2020-10-15 04:44:42,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:42,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:44:42,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696154467] [2020-10-15 04:44:42,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:44:42,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:42,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:44:42,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:44:42,452 INFO L87 Difference]: Start difference. First operand 6028 states and 10446 transitions. Second operand 8 states.