/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:04:26,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:04:26,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:04:26,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:04:26,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:04:26,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:04:26,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:04:26,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:04:26,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:04:26,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:04:26,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:04:26,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:04:26,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:04:26,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:04:26,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:04:26,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:04:26,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:04:26,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:04:26,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:04:26,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:04:26,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:04:26,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:04:26,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:04:26,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:04:26,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:04:26,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:04:26,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:04:26,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:04:26,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:04:26,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:04:26,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:04:26,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:04:26,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:04:26,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:04:26,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:04:26,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:04:26,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:04:26,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:04:26,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:04:26,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:04:26,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:04:26,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 10:04:26,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:04:26,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:04:26,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:04:26,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:04:26,918 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:04:26,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:04:26,918 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:04:26,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:04:26,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:04:26,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:04:26,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:04:26,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:04:26,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:04:26,921 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:04:26,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:04:26,921 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:04:26,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:04:26,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:04:26,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:04:26,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:04:26,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:04:26,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:04:26,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:04:26,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:04:26,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:04:26,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:04:26,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:04:26,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:04:26,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:04:26,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:04:27,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:04:27,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:04:27,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:04:27,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:04:27,284 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:04:27,284 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-1.c [2020-10-14 10:04:27,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b3cde6a7/855ff5139feb4a55a38e5f5e2a4a03b2/FLAG5391cdebe [2020-10-14 10:04:27,922 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:04:27,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.13.i.cil-1.c [2020-10-14 10:04:27,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b3cde6a7/855ff5139feb4a55a38e5f5e2a4a03b2/FLAG5391cdebe [2020-10-14 10:04:28,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b3cde6a7/855ff5139feb4a55a38e5f5e2a4a03b2 [2020-10-14 10:04:28,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:04:28,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:04:28,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:04:28,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:04:28,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:04:28,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:28" (1/1) ... [2020-10-14 10:04:28,222 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 14.10 10:04:28, skipping insertion in model container [2020-10-14 10:04:28,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:28" (1/1) ... [2020-10-14 10:04:28,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:04:28,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:04:29,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:04:29,033 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:04:29,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:04:29,251 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:04:29,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29 WrapperNode [2020-10-14 10:04:29,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:04:29,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:04:29,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:04:29,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:04:29,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (1/1) ... [2020-10-14 10:04:29,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (1/1) ... [2020-10-14 10:04:29,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (1/1) ... [2020-10-14 10:04:29,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (1/1) ... [2020-10-14 10:04:29,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (1/1) ... [2020-10-14 10:04:29,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (1/1) ... [2020-10-14 10:04:29,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (1/1) ... [2020-10-14 10:04:29,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:04:29,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:04:29,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:04:29,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:04:29,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:04:29,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:04:29,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:04:29,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:04:29,477 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:04:29,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:04:29,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:04:29,477 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:04:29,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:04:29,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:04:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:04:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:04:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:04:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:04:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:04:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:04:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:04:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:04:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:04:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:04:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:04:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:04:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:04:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:04:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:04:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:04:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:04:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:04:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:04:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:04:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:04:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:04:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:04:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:04:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:04:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:04:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:04:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:04:30,211 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:04:31,016 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:04:31,016 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:04:31,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:04:31,041 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:04:31,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:31 BoogieIcfgContainer [2020-10-14 10:04:31,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:04:31,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:04:31,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:04:31,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:04:31,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:28" (1/3) ... [2020-10-14 10:04:31,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a3ea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:31, skipping insertion in model container [2020-10-14 10:04:31,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:29" (2/3) ... [2020-10-14 10:04:31,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a3ea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:31, skipping insertion in model container [2020-10-14 10:04:31,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:31" (3/3) ... [2020-10-14 10:04:31,055 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.13.i.cil-1.c [2020-10-14 10:04:31,066 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:04:31,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:04:31,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:04:31,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:04:31,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:04:31,116 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:04:31,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:04:31,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:04:31,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:04:31,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:04:31,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:04:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-14 10:04:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 10:04:31,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:31,150 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] [2020-10-14 10:04:31,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:31,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:31,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-14 10:04:31,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:31,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317859645] [2020-10-14 10:04:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:31,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:33,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 10:04:33,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1674 [2020-10-14 10:04:33,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:33,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:04:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:04:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:33,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:33,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:33,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:33,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:04:33,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:33,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:04:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:33,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317859645] [2020-10-14 10:04:33,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:33,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:33,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927437542] [2020-10-14 10:04:33,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:33,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:33,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:33,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:33,334 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-14 10:04:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:34,071 INFO L93 Difference]: Finished difference Result 436 states and 738 transitions. [2020-10-14 10:04:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:34,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 10:04:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:34,088 INFO L225 Difference]: With dead ends: 436 [2020-10-14 10:04:34,088 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 10:04:34,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 10:04:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-14 10:04:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 10:04:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2020-10-14 10:04:34,157 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 41 [2020-10-14 10:04:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:34,158 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2020-10-14 10:04:34,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2020-10-14 10:04:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 10:04:34,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:34,162 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] [2020-10-14 10:04:34,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:04:34,163 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:34,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:34,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-14 10:04:34,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:34,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640190257] [2020-10-14 10:04:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:35,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 10:04:35,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:04:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-14 10:04:35,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:35,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:04:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:04:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:35,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:35,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:35,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:04:35,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:35,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:35,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:04:35,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640190257] [2020-10-14 10:04:35,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:35,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:35,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731093061] [2020-10-14 10:04:35,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:35,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:35,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:35,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:35,248 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand 4 states. [2020-10-14 10:04:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:35,790 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2020-10-14 10:04:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:35,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 10:04:35,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:35,795 INFO L225 Difference]: With dead ends: 518 [2020-10-14 10:04:35,795 INFO L226 Difference]: Without dead ends: 391 [2020-10-14 10:04:35,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-14 10:04:35,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-14 10:04:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 10:04:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2020-10-14 10:04:35,834 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 58 [2020-10-14 10:04:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:35,834 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2020-10-14 10:04:35,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:35,835 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2020-10-14 10:04:35,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 10:04:35,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:35,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:35,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:04:35,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:35,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-14 10:04:35,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:35,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952172175] [2020-10-14 10:04:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:36,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 10:04:36,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-14 10:04:36,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:36,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:04:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:04:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:36,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:36,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:36,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:36,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:04:36,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952172175] [2020-10-14 10:04:36,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:36,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:36,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707848881] [2020-10-14 10:04:36,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:36,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:36,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:36,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:36,606 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand 4 states. [2020-10-14 10:04:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:37,123 INFO L93 Difference]: Finished difference Result 768 states and 1164 transitions. [2020-10-14 10:04:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:37,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 10:04:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:37,129 INFO L225 Difference]: With dead ends: 768 [2020-10-14 10:04:37,130 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 10:04:37,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 10:04:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-14 10:04:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 10:04:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-14 10:04:37,157 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-14 10:04:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:37,158 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-14 10:04:37,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-14 10:04:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 10:04:37,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:37,163 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:37,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:04:37,163 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:37,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1488005106, now seen corresponding path program 1 times [2020-10-14 10:04:37,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:37,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520493019] [2020-10-14 10:04:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:38,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:40,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:04:40,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3501 [2020-10-14 10:04:40,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:40,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:04:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:40,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:40,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:40,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:40,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:04:40,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:40,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:40,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520493019] [2020-10-14 10:04:40,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:40,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:40,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554656095] [2020-10-14 10:04:40,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:40,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:40,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:40,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:40,855 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-14 10:04:41,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:41,362 INFO L93 Difference]: Finished difference Result 1020 states and 1543 transitions. [2020-10-14 10:04:41,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:41,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 10:04:41,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:41,367 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:04:41,367 INFO L226 Difference]: Without dead ends: 643 [2020-10-14 10:04:41,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-14 10:04:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2020-10-14 10:04:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-14 10:04:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 968 transitions. [2020-10-14 10:04:41,390 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 968 transitions. Word has length 104 [2020-10-14 10:04:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:41,391 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 968 transitions. [2020-10-14 10:04:41,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 968 transitions. [2020-10-14 10:04:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 10:04:41,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:41,394 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:41,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:04:41,395 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:41,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1455605068, now seen corresponding path program 1 times [2020-10-14 10:04:41,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:41,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909088596] [2020-10-14 10:04:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:44,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:44,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 10:04:44,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:44,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3321 [2020-10-14 10:04:44,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:44,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:04:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:04:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:04:44,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:44,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:44,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:44,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:04:44,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:44,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:44,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909088596] [2020-10-14 10:04:44,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:44,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:44,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24563296] [2020-10-14 10:04:44,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:44,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:44,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:44,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:44,882 INFO L87 Difference]: Start difference. First operand 641 states and 968 transitions. Second operand 4 states. [2020-10-14 10:04:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:45,843 INFO L93 Difference]: Finished difference Result 1270 states and 1927 transitions. [2020-10-14 10:04:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:45,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-14 10:04:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:45,850 INFO L225 Difference]: With dead ends: 1270 [2020-10-14 10:04:45,850 INFO L226 Difference]: Without dead ends: 768 [2020-10-14 10:04:45,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-14 10:04:45,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-10-14 10:04:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-14 10:04:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1147 transitions. [2020-10-14 10:04:45,882 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1147 transitions. Word has length 110 [2020-10-14 10:04:45,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:45,885 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1147 transitions. [2020-10-14 10:04:45,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1147 transitions. [2020-10-14 10:04:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 10:04:45,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:45,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:45,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:04:45,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash 758633420, now seen corresponding path program 1 times [2020-10-14 10:04:45,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:45,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731432429] [2020-10-14 10:04:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:46,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:46,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 10:04:46,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-14 10:04:46,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:46,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:04:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:04:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:46,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:46,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:46,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:04:46,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:46,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:46,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:04:46,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731432429] [2020-10-14 10:04:46,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:46,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:46,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456753744] [2020-10-14 10:04:46,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:46,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:46,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:46,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:46,656 INFO L87 Difference]: Start difference. First operand 766 states and 1147 transitions. Second operand 4 states. [2020-10-14 10:04:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:47,162 INFO L93 Difference]: Finished difference Result 1518 states and 2284 transitions. [2020-10-14 10:04:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:47,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-14 10:04:47,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:47,169 INFO L225 Difference]: With dead ends: 1518 [2020-10-14 10:04:47,170 INFO L226 Difference]: Without dead ends: 891 [2020-10-14 10:04:47,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:47,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-14 10:04:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2020-10-14 10:04:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-14 10:04:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1337 transitions. [2020-10-14 10:04:47,203 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1337 transitions. Word has length 127 [2020-10-14 10:04:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:47,203 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1337 transitions. [2020-10-14 10:04:47,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1337 transitions. [2020-10-14 10:04:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:04:47,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:47,208 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:47,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:04:47,209 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:47,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1858251708, now seen corresponding path program 1 times [2020-10-14 10:04:47,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:47,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868174182] [2020-10-14 10:04:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:47,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:48,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 10:04:48,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:04:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-14 10:04:48,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:48,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:04:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 10:04:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:48,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:48,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:48,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:48,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:48,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:48,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:48,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:04:48,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868174182] [2020-10-14 10:04:48,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:48,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:04:48,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789236443] [2020-10-14 10:04:48,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:04:48,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:04:48,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:48,260 INFO L87 Difference]: Start difference. First operand 891 states and 1337 transitions. Second operand 4 states. [2020-10-14 10:04:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:48,748 INFO L93 Difference]: Finished difference Result 1020 states and 1527 transitions. [2020-10-14 10:04:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:04:48,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-14 10:04:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:48,754 INFO L225 Difference]: With dead ends: 1020 [2020-10-14 10:04:48,754 INFO L226 Difference]: Without dead ends: 1018 [2020-10-14 10:04:48,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:04:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-14 10:04:48,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2020-10-14 10:04:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-14 10:04:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1524 transitions. [2020-10-14 10:04:48,787 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1524 transitions. Word has length 133 [2020-10-14 10:04:48,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:48,787 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1524 transitions. [2020-10-14 10:04:48,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:04:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1524 transitions. [2020-10-14 10:04:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 10:04:48,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:48,794 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:48,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:04:48,794 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:48,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:48,795 INFO L82 PathProgramCache]: Analyzing trace with hash 128857992, now seen corresponding path program 1 times [2020-10-14 10:04:48,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:48,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481554409] [2020-10-14 10:04:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:48,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:53,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:53,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 10:04:53,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:04:53,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 10:04:53,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:53,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:04:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:04:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:04:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:04:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:53,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:53,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:04:53,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:04:53,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:04:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:04:53,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:04:53,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:04:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:04:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:04:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:04:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:04:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:04:54,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481554409] [2020-10-14 10:04:54,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:04:54,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:04:54,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287593052] [2020-10-14 10:04:54,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:04:54,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:04:54,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:04:54,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:04:54,027 INFO L87 Difference]: Start difference. First operand 1016 states and 1524 transitions. Second operand 5 states. [2020-10-14 10:04:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:55,155 INFO L93 Difference]: Finished difference Result 2844 states and 4290 transitions. [2020-10-14 10:04:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:55,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-14 10:04:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:55,165 INFO L225 Difference]: With dead ends: 2844 [2020-10-14 10:04:55,165 INFO L226 Difference]: Without dead ends: 1842 [2020-10-14 10:04:55,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:04:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-10-14 10:04:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1312. [2020-10-14 10:04:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-14 10:04:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2068 transitions. [2020-10-14 10:04:55,229 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2068 transitions. Word has length 169 [2020-10-14 10:04:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:55,230 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 2068 transitions. [2020-10-14 10:04:55,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2068 transitions. [2020-10-14 10:04:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:04:55,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:55,234 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:55,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:04:55,234 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:55,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1774386870, now seen corresponding path program 1 times [2020-10-14 10:04:55,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:55,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092735454] [2020-10-14 10:04:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:00,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:05:00,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 10:05:00,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:00,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:05:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:00,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:00,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:00,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:05:00,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:00,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:05:00,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092735454] [2020-10-14 10:05:00,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:00,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:00,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423521302] [2020-10-14 10:05:00,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:00,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:00,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:00,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:00,437 INFO L87 Difference]: Start difference. First operand 1312 states and 2068 transitions. Second operand 5 states. [2020-10-14 10:05:01,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:01,903 INFO L93 Difference]: Finished difference Result 3108 states and 4791 transitions. [2020-10-14 10:05:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:01,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 10:05:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:01,916 INFO L225 Difference]: With dead ends: 3108 [2020-10-14 10:05:01,916 INFO L226 Difference]: Without dead ends: 1810 [2020-10-14 10:05:01,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:01,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2020-10-14 10:05:02,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1320. [2020-10-14 10:05:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-10-14 10:05:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2076 transitions. [2020-10-14 10:05:02,010 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2076 transitions. Word has length 170 [2020-10-14 10:05:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:02,011 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 2076 transitions. [2020-10-14 10:05:02,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2076 transitions. [2020-10-14 10:05:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:05:02,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:02,018 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:02,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:05:02,019 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:02,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1383375992, now seen corresponding path program 1 times [2020-10-14 10:05:02,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:02,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456182212] [2020-10-14 10:05:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:07,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:05:07,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:05:07,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 10:05:07,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:07,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:05:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-14 10:05:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:05:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:07,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:07,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:07,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:07,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:07,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:07,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:07,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:05:07,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456182212] [2020-10-14 10:05:07,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:07,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:05:07,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19060675] [2020-10-14 10:05:07,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:05:07,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:07,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:05:07,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:05:07,197 INFO L87 Difference]: Start difference. First operand 1320 states and 2076 transitions. Second operand 4 states. [2020-10-14 10:05:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:07,698 INFO L93 Difference]: Finished difference Result 1811 states and 2852 transitions. [2020-10-14 10:05:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:05:07,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-14 10:05:07,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:07,708 INFO L225 Difference]: With dead ends: 1811 [2020-10-14 10:05:07,709 INFO L226 Difference]: Without dead ends: 1483 [2020-10-14 10:05:07,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:05:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-10-14 10:05:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1483. [2020-10-14 10:05:07,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-10-14 10:05:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2336 transitions. [2020-10-14 10:05:07,789 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2336 transitions. Word has length 170 [2020-10-14 10:05:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:07,789 INFO L479 AbstractCegarLoop]: Abstraction has 1483 states and 2336 transitions. [2020-10-14 10:05:07,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:05:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2336 transitions. [2020-10-14 10:05:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 10:05:07,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:07,798 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:07,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:05:07,798 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:07,799 INFO L82 PathProgramCache]: Analyzing trace with hash -287446943, now seen corresponding path program 1 times [2020-10-14 10:05:07,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:07,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514617502] [2020-10-14 10:05:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:12,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:12,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 10:05:12,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:12,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:05:12,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:12,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:05:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:12,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:12,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:12,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:12,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:12,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:12,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 10:05:13,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514617502] [2020-10-14 10:05:13,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:13,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:13,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293223842] [2020-10-14 10:05:13,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:13,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:13,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:13,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:13,014 INFO L87 Difference]: Start difference. First operand 1483 states and 2336 transitions. Second operand 5 states. [2020-10-14 10:05:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:14,146 INFO L93 Difference]: Finished difference Result 3881 states and 6074 transitions. [2020-10-14 10:05:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:14,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 10:05:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:14,159 INFO L225 Difference]: With dead ends: 3881 [2020-10-14 10:05:14,160 INFO L226 Difference]: Without dead ends: 2412 [2020-10-14 10:05:14,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2020-10-14 10:05:14,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1816. [2020-10-14 10:05:14,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-10-14 10:05:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2948 transitions. [2020-10-14 10:05:14,277 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2948 transitions. Word has length 182 [2020-10-14 10:05:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:14,278 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2948 transitions. [2020-10-14 10:05:14,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2948 transitions. [2020-10-14 10:05:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:05:14,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:14,283 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:14,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:05:14,284 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:14,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2073794395, now seen corresponding path program 1 times [2020-10-14 10:05:14,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:14,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482251250] [2020-10-14 10:05:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:14,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:15,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:19,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:19,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:05:19,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:05:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 10:05:19,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:19,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:19,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:05:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 10:05:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:19,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:19,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:19,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:19,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:19,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:05:19,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482251250] [2020-10-14 10:05:19,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:19,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:19,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890184569] [2020-10-14 10:05:19,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:19,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:19,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:19,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:19,567 INFO L87 Difference]: Start difference. First operand 1816 states and 2948 transitions. Second operand 5 states. [2020-10-14 10:05:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:20,291 INFO L93 Difference]: Finished difference Result 5398 states and 8763 transitions. [2020-10-14 10:05:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:20,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:05:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:20,309 INFO L225 Difference]: With dead ends: 5398 [2020-10-14 10:05:20,310 INFO L226 Difference]: Without dead ends: 3596 [2020-10-14 10:05:20,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2020-10-14 10:05:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3594. [2020-10-14 10:05:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-14 10:05:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5795 transitions. [2020-10-14 10:05:20,451 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5795 transitions. Word has length 183 [2020-10-14 10:05:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:20,451 INFO L479 AbstractCegarLoop]: Abstraction has 3594 states and 5795 transitions. [2020-10-14 10:05:20,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5795 transitions. [2020-10-14 10:05:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:05:20,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:20,462 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:20,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:05:20,462 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:20,462 INFO L82 PathProgramCache]: Analyzing trace with hash -162751837, now seen corresponding path program 1 times [2020-10-14 10:05:20,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:20,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381565124] [2020-10-14 10:05:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:25,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:25,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:05:25,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:05:25,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:25,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:25,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:25,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:25,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:25,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:25,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:05:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:05:25,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381565124] [2020-10-14 10:05:25,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:25,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:25,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539212098] [2020-10-14 10:05:25,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:25,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:25,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:25,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:25,656 INFO L87 Difference]: Start difference. First operand 3594 states and 5795 transitions. Second operand 5 states. [2020-10-14 10:05:26,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:26,780 INFO L93 Difference]: Finished difference Result 9016 states and 14367 transitions. [2020-10-14 10:05:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:26,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:05:26,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:26,812 INFO L225 Difference]: With dead ends: 9016 [2020-10-14 10:05:26,812 INFO L226 Difference]: Without dead ends: 5441 [2020-10-14 10:05:26,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2020-10-14 10:05:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 3594. [2020-10-14 10:05:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-14 10:05:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5795 transitions. [2020-10-14 10:05:27,014 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5795 transitions. Word has length 183 [2020-10-14 10:05:27,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:27,015 INFO L479 AbstractCegarLoop]: Abstraction has 3594 states and 5795 transitions. [2020-10-14 10:05:27,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5795 transitions. [2020-10-14 10:05:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:05:27,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:27,026 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:27,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:05:27,026 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:27,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1753835773, now seen corresponding path program 1 times [2020-10-14 10:05:27,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:27,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319819103] [2020-10-14 10:05:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:32,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:32,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:05:32,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 10:05:32,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:32,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:32,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:05:32,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:32,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:32,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:32,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:05:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 10:05:32,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319819103] [2020-10-14 10:05:32,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:32,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:32,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888943948] [2020-10-14 10:05:32,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:32,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:32,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:32,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:32,206 INFO L87 Difference]: Start difference. First operand 3594 states and 5795 transitions. Second operand 5 states. [2020-10-14 10:05:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:33,321 INFO L93 Difference]: Finished difference Result 8944 states and 14269 transitions. [2020-10-14 10:05:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:33,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:05:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:33,361 INFO L225 Difference]: With dead ends: 8944 [2020-10-14 10:05:33,362 INFO L226 Difference]: Without dead ends: 5369 [2020-10-14 10:05:33,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:33,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2020-10-14 10:05:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 3594. [2020-10-14 10:05:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-14 10:05:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5795 transitions. [2020-10-14 10:05:33,506 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5795 transitions. Word has length 183 [2020-10-14 10:05:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:33,506 INFO L479 AbstractCegarLoop]: Abstraction has 3594 states and 5795 transitions. [2020-10-14 10:05:33,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5795 transitions. [2020-10-14 10:05:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:05:33,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:33,520 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:33,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:05:33,521 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:33,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:33,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1878796561, now seen corresponding path program 1 times [2020-10-14 10:05:33,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:33,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666385401] [2020-10-14 10:05:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:33,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:38,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:38,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:05:38,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:05:38,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4595 [2020-10-14 10:05:38,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:38,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:38,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:38,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:38,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:38,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:38,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 10:05:38,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666385401] [2020-10-14 10:05:38,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:38,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:38,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038683211] [2020-10-14 10:05:38,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:38,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:38,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:38,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:38,237 INFO L87 Difference]: Start difference. First operand 3594 states and 5795 transitions. Second operand 5 states. [2020-10-14 10:05:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:39,450 INFO L93 Difference]: Finished difference Result 9034 states and 14385 transitions. [2020-10-14 10:05:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:39,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:05:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:39,470 INFO L225 Difference]: With dead ends: 9034 [2020-10-14 10:05:39,471 INFO L226 Difference]: Without dead ends: 5459 [2020-10-14 10:05:39,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2020-10-14 10:05:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 3612. [2020-10-14 10:05:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2020-10-14 10:05:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5813 transitions. [2020-10-14 10:05:39,598 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5813 transitions. Word has length 183 [2020-10-14 10:05:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:39,598 INFO L479 AbstractCegarLoop]: Abstraction has 3612 states and 5813 transitions. [2020-10-14 10:05:39,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:39,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5813 transitions. [2020-10-14 10:05:39,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:05:39,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:39,608 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:39,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:05:39,608 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:39,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1324416763, now seen corresponding path program 1 times [2020-10-14 10:05:39,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:39,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484813391] [2020-10-14 10:05:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:39,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:39,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:44,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:44,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:05:44,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 10:05:44,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:44,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:05:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:05:44,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:44,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:44,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:44,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:44,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:05:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:44,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:05:44,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484813391] [2020-10-14 10:05:44,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:44,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:44,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509383747] [2020-10-14 10:05:44,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:44,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:44,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:44,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:44,773 INFO L87 Difference]: Start difference. First operand 3612 states and 5813 transitions. Second operand 5 states. [2020-10-14 10:05:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:45,851 INFO L93 Difference]: Finished difference Result 8980 states and 14305 transitions. [2020-10-14 10:05:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:45,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:05:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:45,865 INFO L225 Difference]: With dead ends: 8980 [2020-10-14 10:05:45,865 INFO L226 Difference]: Without dead ends: 5387 [2020-10-14 10:05:45,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5387 states. [2020-10-14 10:05:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5387 to 3612. [2020-10-14 10:05:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2020-10-14 10:05:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5813 transitions. [2020-10-14 10:05:46,001 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5813 transitions. Word has length 184 [2020-10-14 10:05:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:46,001 INFO L479 AbstractCegarLoop]: Abstraction has 3612 states and 5813 transitions. [2020-10-14 10:05:46,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5813 transitions. [2020-10-14 10:05:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:05:46,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:46,010 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:46,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:05:46,011 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:46,011 INFO L82 PathProgramCache]: Analyzing trace with hash -177955790, now seen corresponding path program 1 times [2020-10-14 10:05:46,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:46,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624268149] [2020-10-14 10:05:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:51,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:51,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:05:51,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:51,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 10:05:51,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:51,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:05:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:05:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:05:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:51,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:51,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:51,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:51,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:51,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:51,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 10:05:51,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624268149] [2020-10-14 10:05:51,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:51,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:51,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126745564] [2020-10-14 10:05:51,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:51,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:51,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:51,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:51,177 INFO L87 Difference]: Start difference. First operand 3612 states and 5813 transitions. Second operand 5 states. [2020-10-14 10:05:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:52,292 INFO L93 Difference]: Finished difference Result 9070 states and 14421 transitions. [2020-10-14 10:05:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:52,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:05:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:52,305 INFO L225 Difference]: With dead ends: 9070 [2020-10-14 10:05:52,306 INFO L226 Difference]: Without dead ends: 5477 [2020-10-14 10:05:52,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2020-10-14 10:05:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 4053. [2020-10-14 10:05:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4053 states. [2020-10-14 10:05:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 6560 transitions. [2020-10-14 10:05:52,450 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 6560 transitions. Word has length 184 [2020-10-14 10:05:52,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:52,450 INFO L479 AbstractCegarLoop]: Abstraction has 4053 states and 6560 transitions. [2020-10-14 10:05:52,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 6560 transitions. [2020-10-14 10:05:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:05:52,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:52,460 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:52,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:05:52,460 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:52,461 INFO L82 PathProgramCache]: Analyzing trace with hash -108307916, now seen corresponding path program 1 times [2020-10-14 10:05:52,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:52,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380931302] [2020-10-14 10:05:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:55,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:57,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:05:57,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:05:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 10:05:57,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:57,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:05:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:05:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:05:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:57,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:05:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:57,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:57,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:05:57,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:05:57,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:05:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:05:57,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:05:57,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:05:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:05:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:05:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:05:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:05:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:05:57,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380931302] [2020-10-14 10:05:57,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:05:57,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:05:57,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508862062] [2020-10-14 10:05:57,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:05:57,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:05:57,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:05:57,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:05:57,674 INFO L87 Difference]: Start difference. First operand 4053 states and 6560 transitions. Second operand 5 states. [2020-10-14 10:05:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:05:58,718 INFO L93 Difference]: Finished difference Result 10879 states and 17518 transitions. [2020-10-14 10:05:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:05:58,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:05:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:05:58,735 INFO L225 Difference]: With dead ends: 10879 [2020-10-14 10:05:58,735 INFO L226 Difference]: Without dead ends: 6845 [2020-10-14 10:05:58,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:05:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2020-10-14 10:05:58,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 4071. [2020-10-14 10:05:58,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-14 10:05:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 6578 transitions. [2020-10-14 10:05:58,913 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 6578 transitions. Word has length 184 [2020-10-14 10:05:58,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:05:58,913 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 6578 transitions. [2020-10-14 10:05:58,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:05:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 6578 transitions. [2020-10-14 10:05:58,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:05:58,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:05:58,923 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:05:58,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:05:58,924 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:05:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:05:58,924 INFO L82 PathProgramCache]: Analyzing trace with hash -263714255, now seen corresponding path program 1 times [2020-10-14 10:05:58,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:05:58,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569749539] [2020-10-14 10:05:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:05:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:05:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:05:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:00,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:00,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:06:00,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:00,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1940 [2020-10-14 10:06:00,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:00,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:06:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:06:00,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:00,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:00,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:00,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:00,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 10:06:00,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569749539] [2020-10-14 10:06:00,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:00,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:00,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288936221] [2020-10-14 10:06:00,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:00,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:00,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:00,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:00,984 INFO L87 Difference]: Start difference. First operand 4071 states and 6578 transitions. Second operand 5 states. [2020-10-14 10:06:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:02,088 INFO L93 Difference]: Finished difference Result 9898 states and 15835 transitions. [2020-10-14 10:06:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:02,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:06:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:02,106 INFO L225 Difference]: With dead ends: 9898 [2020-10-14 10:06:02,106 INFO L226 Difference]: Without dead ends: 5846 [2020-10-14 10:06:02,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2020-10-14 10:06:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 4071. [2020-10-14 10:06:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-14 10:06:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 6578 transitions. [2020-10-14 10:06:02,252 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 6578 transitions. Word has length 184 [2020-10-14 10:06:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:02,253 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 6578 transitions. [2020-10-14 10:06:02,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 6578 transitions. [2020-10-14 10:06:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 10:06:02,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:02,263 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:02,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:06:02,264 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:02,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1282788982, now seen corresponding path program 1 times [2020-10-14 10:06:02,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:02,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958173177] [2020-10-14 10:06:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:02,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:03,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:07,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:06:07,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:07,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:06:07,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:07,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:06:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:06:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:07,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:07,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:07,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:07,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:07,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:07,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 10:06:07,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958173177] [2020-10-14 10:06:07,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:07,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:07,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32830275] [2020-10-14 10:06:07,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:07,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:07,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:07,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:07,426 INFO L87 Difference]: Start difference. First operand 4071 states and 6578 transitions. Second operand 5 states. [2020-10-14 10:06:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:08,358 INFO L93 Difference]: Finished difference Result 10222 states and 16321 transitions. [2020-10-14 10:06:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:08,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 10:06:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:08,378 INFO L225 Difference]: With dead ends: 10222 [2020-10-14 10:06:08,378 INFO L226 Difference]: Without dead ends: 6170 [2020-10-14 10:06:08,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2020-10-14 10:06:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 4071. [2020-10-14 10:06:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-14 10:06:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 6596 transitions. [2020-10-14 10:06:08,544 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 6596 transitions. Word has length 185 [2020-10-14 10:06:08,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:08,545 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 6596 transitions. [2020-10-14 10:06:08,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 6596 transitions. [2020-10-14 10:06:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 10:06:08,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:08,555 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:08,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:06:08,555 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:08,555 INFO L82 PathProgramCache]: Analyzing trace with hash 287169276, now seen corresponding path program 1 times [2020-10-14 10:06:08,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:08,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597116822] [2020-10-14 10:06:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:11,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:11,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 10:06:11,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2603 [2020-10-14 10:06:11,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:11,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 10:06:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:06:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:11,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:11,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:11,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:11,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:11,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:11,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-14 10:06:11,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597116822] [2020-10-14 10:06:11,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:11,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:11,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732833015] [2020-10-14 10:06:11,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:11,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:11,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:11,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:11,276 INFO L87 Difference]: Start difference. First operand 4071 states and 6596 transitions. Second operand 5 states. [2020-10-14 10:06:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:12,330 INFO L93 Difference]: Finished difference Result 9898 states and 15871 transitions. [2020-10-14 10:06:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:12,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 10:06:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:12,340 INFO L225 Difference]: With dead ends: 9898 [2020-10-14 10:06:12,340 INFO L226 Difference]: Without dead ends: 5846 [2020-10-14 10:06:12,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2020-10-14 10:06:12,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 4071. [2020-10-14 10:06:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-14 10:06:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 6596 transitions. [2020-10-14 10:06:12,480 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 6596 transitions. Word has length 186 [2020-10-14 10:06:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:12,481 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 6596 transitions. [2020-10-14 10:06:12,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 6596 transitions. [2020-10-14 10:06:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 10:06:12,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:12,489 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:12,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:06:12,489 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1526697442, now seen corresponding path program 1 times [2020-10-14 10:06:12,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:12,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546106673] [2020-10-14 10:06:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:17,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 10:06:17,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:06:17,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:17,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:17,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 10:06:17,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:06:17,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:17,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:17,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:17,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:17,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:17,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:17,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-14 10:06:17,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546106673] [2020-10-14 10:06:17,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:17,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:17,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632091560] [2020-10-14 10:06:17,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:17,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:17,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:17,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:17,637 INFO L87 Difference]: Start difference. First operand 4071 states and 6596 transitions. Second operand 5 states. [2020-10-14 10:06:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:18,718 INFO L93 Difference]: Finished difference Result 9475 states and 15124 transitions. [2020-10-14 10:06:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:18,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-14 10:06:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:18,728 INFO L225 Difference]: With dead ends: 9475 [2020-10-14 10:06:18,729 INFO L226 Difference]: Without dead ends: 5423 [2020-10-14 10:06:18,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:18,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2020-10-14 10:06:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4071. [2020-10-14 10:06:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-14 10:06:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 6596 transitions. [2020-10-14 10:06:18,888 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 6596 transitions. Word has length 191 [2020-10-14 10:06:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:18,889 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 6596 transitions. [2020-10-14 10:06:18,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 6596 transitions. [2020-10-14 10:06:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 10:06:18,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:18,902 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:18,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:06:18,903 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:18,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2019323616, now seen corresponding path program 1 times [2020-10-14 10:06:18,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:18,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977662989] [2020-10-14 10:06:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:19,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:23,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 10:06:23,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4543 [2020-10-14 10:06:23,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:23,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 10:06:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:06:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:23,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:23,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:23,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:23,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:23,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:23,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:23,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:23,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:23,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-14 10:06:23,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977662989] [2020-10-14 10:06:23,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:23,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:23,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518078223] [2020-10-14 10:06:23,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:23,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:23,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:23,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:23,587 INFO L87 Difference]: Start difference. First operand 4071 states and 6596 transitions. Second operand 5 states. [2020-10-14 10:06:24,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:24,679 INFO L93 Difference]: Finished difference Result 9898 states and 15871 transitions. [2020-10-14 10:06:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:24,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-14 10:06:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:24,687 INFO L225 Difference]: With dead ends: 9898 [2020-10-14 10:06:24,687 INFO L226 Difference]: Without dead ends: 5846 [2020-10-14 10:06:24,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2020-10-14 10:06:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 4071. [2020-10-14 10:06:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-14 10:06:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 6596 transitions. [2020-10-14 10:06:24,870 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 6596 transitions. Word has length 191 [2020-10-14 10:06:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:24,871 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 6596 transitions. [2020-10-14 10:06:24,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 6596 transitions. [2020-10-14 10:06:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 10:06:24,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:24,879 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:24,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:06:24,879 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:24,880 INFO L82 PathProgramCache]: Analyzing trace with hash -18089110, now seen corresponding path program 1 times [2020-10-14 10:06:24,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:24,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933870209] [2020-10-14 10:06:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:28,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:28,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 10:06:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3570 [2020-10-14 10:06:28,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:28,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 10:06:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:06:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:28,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:28,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:28,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:28,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-14 10:06:28,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933870209] [2020-10-14 10:06:28,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:28,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:28,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682862770] [2020-10-14 10:06:28,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:28,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:28,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:28,582 INFO L87 Difference]: Start difference. First operand 4071 states and 6596 transitions. Second operand 5 states. [2020-10-14 10:06:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:29,643 INFO L93 Difference]: Finished difference Result 9898 states and 15871 transitions. [2020-10-14 10:06:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:29,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-14 10:06:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:29,652 INFO L225 Difference]: With dead ends: 9898 [2020-10-14 10:06:29,652 INFO L226 Difference]: Without dead ends: 5846 [2020-10-14 10:06:29,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2020-10-14 10:06:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 4071. [2020-10-14 10:06:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-14 10:06:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 6596 transitions. [2020-10-14 10:06:29,819 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 6596 transitions. Word has length 191 [2020-10-14 10:06:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:29,820 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 6596 transitions. [2020-10-14 10:06:29,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 6596 transitions. [2020-10-14 10:06:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 10:06:29,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:29,828 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:29,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:06:29,828 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:29,830 INFO L82 PathProgramCache]: Analyzing trace with hash 550023713, now seen corresponding path program 1 times [2020-10-14 10:06:29,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:29,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971207938] [2020-10-14 10:06:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:31,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:31,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 10:06:31,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-14 10:06:31,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:31,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-14 10:06:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:06:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:31,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:31,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:31,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:31,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:31,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:31,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 10:06:31,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971207938] [2020-10-14 10:06:31,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:31,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:31,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055689150] [2020-10-14 10:06:31,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:31,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:31,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:31,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:31,438 INFO L87 Difference]: Start difference. First operand 4071 states and 6596 transitions. Second operand 5 states. [2020-10-14 10:06:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:32,479 INFO L93 Difference]: Finished difference Result 9898 states and 15871 transitions. [2020-10-14 10:06:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:32,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-14 10:06:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:32,487 INFO L225 Difference]: With dead ends: 9898 [2020-10-14 10:06:32,487 INFO L226 Difference]: Without dead ends: 5846 [2020-10-14 10:06:32,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2020-10-14 10:06:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 4071. [2020-10-14 10:06:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-14 10:06:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 6596 transitions. [2020-10-14 10:06:32,613 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 6596 transitions. Word has length 194 [2020-10-14 10:06:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:32,613 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 6596 transitions. [2020-10-14 10:06:32,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 6596 transitions. [2020-10-14 10:06:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 10:06:32,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:32,622 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:32,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:06:32,622 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:32,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:32,622 INFO L82 PathProgramCache]: Analyzing trace with hash -787028834, now seen corresponding path program 1 times [2020-10-14 10:06:32,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:32,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16033381] [2020-10-14 10:06:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:33,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 10:06:33,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-14 10:06:33,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:33,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:06:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:33,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:33,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:33,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:33,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:06:33,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16033381] [2020-10-14 10:06:33,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:33,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:33,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681866957] [2020-10-14 10:06:33,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:33,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:33,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:33,965 INFO L87 Difference]: Start difference. First operand 4071 states and 6596 transitions. Second operand 5 states. [2020-10-14 10:06:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:35,084 INFO L93 Difference]: Finished difference Result 9844 states and 15781 transitions. [2020-10-14 10:06:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:35,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-14 10:06:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:35,091 INFO L225 Difference]: With dead ends: 9844 [2020-10-14 10:06:35,091 INFO L226 Difference]: Without dead ends: 5792 [2020-10-14 10:06:35,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2020-10-14 10:06:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 4638. [2020-10-14 10:06:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2020-10-14 10:06:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 7613 transitions. [2020-10-14 10:06:35,210 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 7613 transitions. Word has length 198 [2020-10-14 10:06:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:35,210 INFO L479 AbstractCegarLoop]: Abstraction has 4638 states and 7613 transitions. [2020-10-14 10:06:35,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 7613 transitions. [2020-10-14 10:06:35,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 10:06:35,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:35,217 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:35,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:06:35,218 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:35,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:35,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1969254242, now seen corresponding path program 1 times [2020-10-14 10:06:35,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:35,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812511395] [2020-10-14 10:06:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 10:06:40,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 10:06:40,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 10:06:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:06:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:40,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 10:06:40,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812511395] [2020-10-14 10:06:40,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:40,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:40,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6780116] [2020-10-14 10:06:40,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:40,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:40,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:40,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:40,382 INFO L87 Difference]: Start difference. First operand 4638 states and 7613 transitions. Second operand 5 states. [2020-10-14 10:06:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:41,520 INFO L93 Difference]: Finished difference Result 11689 states and 19102 transitions. [2020-10-14 10:06:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:41,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-14 10:06:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:41,528 INFO L225 Difference]: With dead ends: 11689 [2020-10-14 10:06:41,528 INFO L226 Difference]: Without dead ends: 7070 [2020-10-14 10:06:41,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2020-10-14 10:06:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 4638. [2020-10-14 10:06:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2020-10-14 10:06:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 7613 transitions. [2020-10-14 10:06:41,681 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 7613 transitions. Word has length 200 [2020-10-14 10:06:41,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:41,682 INFO L479 AbstractCegarLoop]: Abstraction has 4638 states and 7613 transitions. [2020-10-14 10:06:41,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 7613 transitions. [2020-10-14 10:06:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 10:06:41,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:41,688 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:41,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:06:41,689 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:41,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:41,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1790369585, now seen corresponding path program 1 times [2020-10-14 10:06:41,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:41,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433997174] [2020-10-14 10:06:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:46,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 10:06:46,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:06:46,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:46,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 10:06:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:06:46,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:46,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:46,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:46,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:46,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:46,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:46,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:46,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 10:06:46,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433997174] [2020-10-14 10:06:46,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:46,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:46,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293093058] [2020-10-14 10:06:46,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:46,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:46,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:46,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:46,890 INFO L87 Difference]: Start difference. First operand 4638 states and 7613 transitions. Second operand 5 states. [2020-10-14 10:06:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:48,038 INFO L93 Difference]: Finished difference Result 11032 states and 17905 transitions. [2020-10-14 10:06:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:48,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-14 10:06:48,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:48,046 INFO L225 Difference]: With dead ends: 11032 [2020-10-14 10:06:48,047 INFO L226 Difference]: Without dead ends: 6413 [2020-10-14 10:06:48,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6413 states. [2020-10-14 10:06:48,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6413 to 4638. [2020-10-14 10:06:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2020-10-14 10:06:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 7613 transitions. [2020-10-14 10:06:48,213 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 7613 transitions. Word has length 200 [2020-10-14 10:06:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:48,213 INFO L479 AbstractCegarLoop]: Abstraction has 4638 states and 7613 transitions. [2020-10-14 10:06:48,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 7613 transitions. [2020-10-14 10:06:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 10:06:48,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:48,220 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:48,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:06:48,220 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:48,221 INFO L82 PathProgramCache]: Analyzing trace with hash -885787585, now seen corresponding path program 1 times [2020-10-14 10:06:48,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:48,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290219624] [2020-10-14 10:06:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:53,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 10:06:53,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 10:06:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:53,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-14 10:06:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:06:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:53,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:53,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:53,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:53,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 10:06:53,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290219624] [2020-10-14 10:06:53,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:53,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:53,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343199275] [2020-10-14 10:06:53,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:53,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:53,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:53,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:53,370 INFO L87 Difference]: Start difference. First operand 4638 states and 7613 transitions. Second operand 5 states. [2020-10-14 10:06:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:54,493 INFO L93 Difference]: Finished difference Result 11032 states and 17905 transitions. [2020-10-14 10:06:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:54,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-14 10:06:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:54,502 INFO L225 Difference]: With dead ends: 11032 [2020-10-14 10:06:54,502 INFO L226 Difference]: Without dead ends: 6413 [2020-10-14 10:06:54,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6413 states. [2020-10-14 10:06:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6413 to 4638. [2020-10-14 10:06:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2020-10-14 10:06:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 7613 transitions. [2020-10-14 10:06:54,648 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 7613 transitions. Word has length 201 [2020-10-14 10:06:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:54,649 INFO L479 AbstractCegarLoop]: Abstraction has 4638 states and 7613 transitions. [2020-10-14 10:06:54,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 7613 transitions. [2020-10-14 10:06:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 10:06:54,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:54,655 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:54,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:06:54,655 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:54,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1305330593, now seen corresponding path program 1 times [2020-10-14 10:06:54,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:54,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312689356] [2020-10-14 10:06:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:55,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 10:06:55,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-14 10:06:55,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:55,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 10:06:55,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:55,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:55,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:55,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:55,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:55,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:55,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:55,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:06:56,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312689356] [2020-10-14 10:06:56,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:56,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:56,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311386808] [2020-10-14 10:06:56,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:56,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:56,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:56,023 INFO L87 Difference]: Start difference. First operand 4638 states and 7613 transitions. Second operand 5 states. [2020-10-14 10:06:57,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:57,133 INFO L93 Difference]: Finished difference Result 10411 states and 16780 transitions. [2020-10-14 10:06:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:57,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-14 10:06:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:57,141 INFO L225 Difference]: With dead ends: 10411 [2020-10-14 10:06:57,141 INFO L226 Difference]: Without dead ends: 5792 [2020-10-14 10:06:57,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:57,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2020-10-14 10:06:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 4692. [2020-10-14 10:06:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-14 10:06:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 7703 transitions. [2020-10-14 10:06:57,275 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 7703 transitions. Word has length 201 [2020-10-14 10:06:57,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:57,275 INFO L479 AbstractCegarLoop]: Abstraction has 4692 states and 7703 transitions. [2020-10-14 10:06:57,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 7703 transitions. [2020-10-14 10:06:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 10:06:57,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:57,280 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:57,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:06:57,280 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash 174607217, now seen corresponding path program 1 times [2020-10-14 10:06:57,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:57,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432534433] [2020-10-14 10:06:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:57,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:57,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 10:06:58,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-14 10:06:58,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:58,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:06:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:06:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:58,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:58,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:58,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:58,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:58,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:58,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:06:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:06:58,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432534433] [2020-10-14 10:06:58,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:58,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:58,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527163945] [2020-10-14 10:06:58,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:58,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:58,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:58,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:58,458 INFO L87 Difference]: Start difference. First operand 4692 states and 7703 transitions. Second operand 5 states. [2020-10-14 10:06:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:59,540 INFO L93 Difference]: Finished difference Result 10429 states and 16816 transitions. [2020-10-14 10:06:59,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:59,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-14 10:06:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:59,547 INFO L225 Difference]: With dead ends: 10429 [2020-10-14 10:06:59,548 INFO L226 Difference]: Without dead ends: 5756 [2020-10-14 10:06:59,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:06:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2020-10-14 10:06:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 4710. [2020-10-14 10:06:59,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4710 states. [2020-10-14 10:06:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 7721 transitions. [2020-10-14 10:06:59,680 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 7721 transitions. Word has length 202 [2020-10-14 10:06:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:59,680 INFO L479 AbstractCegarLoop]: Abstraction has 4710 states and 7721 transitions. [2020-10-14 10:06:59,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 7721 transitions. [2020-10-14 10:06:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 10:06:59,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:59,684 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:59,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:06:59,685 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:59,685 INFO L82 PathProgramCache]: Analyzing trace with hash 626479192, now seen corresponding path program 1 times [2020-10-14 10:06:59,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:59,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599018964] [2020-10-14 10:06:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:02,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:02,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 10:07:02,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:07:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2489 [2020-10-14 10:07:02,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:02,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:07:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 10:07:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:07:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:02,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:02,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:02,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:02,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:02,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:02,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:07:02,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599018964] [2020-10-14 10:07:02,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:02,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:07:02,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488284958] [2020-10-14 10:07:02,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:07:02,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:02,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:07:02,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:02,430 INFO L87 Difference]: Start difference. First operand 4710 states and 7721 transitions. Second operand 6 states. [2020-10-14 10:07:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:03,816 INFO L93 Difference]: Finished difference Result 12951 states and 20806 transitions. [2020-10-14 10:07:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:07:03,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 205 [2020-10-14 10:07:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:03,827 INFO L225 Difference]: With dead ends: 12951 [2020-10-14 10:07:03,827 INFO L226 Difference]: Without dead ends: 8260 [2020-10-14 10:07:03,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:07:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2020-10-14 10:07:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 4692. [2020-10-14 10:07:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-14 10:07:03,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 7703 transitions. [2020-10-14 10:07:03,982 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 7703 transitions. Word has length 205 [2020-10-14 10:07:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:03,982 INFO L479 AbstractCegarLoop]: Abstraction has 4692 states and 7703 transitions. [2020-10-14 10:07:03,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:07:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 7703 transitions. [2020-10-14 10:07:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 10:07:03,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:03,987 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:03,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:07:03,987 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:03,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:03,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1878364958, now seen corresponding path program 1 times [2020-10-14 10:07:03,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:03,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922997537] [2020-10-14 10:07:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:04,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:07,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 10:07:07,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3114 [2020-10-14 10:07:07,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:07,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:07:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:07:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:07,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:07,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:07,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:07,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:07,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:07,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:07,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:07:07,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922997537] [2020-10-14 10:07:07,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:07,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:07,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491398858] [2020-10-14 10:07:07,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:07,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:07,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:07,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:07,239 INFO L87 Difference]: Start difference. First operand 4692 states and 7703 transitions. Second operand 5 states. [2020-10-14 10:07:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:08,359 INFO L93 Difference]: Finished difference Result 10411 states and 16780 transitions. [2020-10-14 10:07:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:08,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-14 10:07:08,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:08,367 INFO L225 Difference]: With dead ends: 10411 [2020-10-14 10:07:08,367 INFO L226 Difference]: Without dead ends: 5738 [2020-10-14 10:07:08,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5738 states. [2020-10-14 10:07:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5738 to 4782. [2020-10-14 10:07:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4782 states. [2020-10-14 10:07:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 7829 transitions. [2020-10-14 10:07:08,532 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 7829 transitions. Word has length 210 [2020-10-14 10:07:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:08,533 INFO L479 AbstractCegarLoop]: Abstraction has 4782 states and 7829 transitions. [2020-10-14 10:07:08,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 7829 transitions. [2020-10-14 10:07:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 10:07:08,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:08,537 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:08,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:07:08,538 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1469983905, now seen corresponding path program 1 times [2020-10-14 10:07:08,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:08,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754436674] [2020-10-14 10:07:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:08,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:13,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 10:07:13,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 10:07:13,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:13,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:07:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:07:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:13,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:13,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:13,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:13,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:13,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:13,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:07:13,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754436674] [2020-10-14 10:07:13,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:13,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:13,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298895237] [2020-10-14 10:07:13,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:13,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:13,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:13,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:13,702 INFO L87 Difference]: Start difference. First operand 4782 states and 7829 transitions. Second operand 5 states. [2020-10-14 10:07:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:14,958 INFO L93 Difference]: Finished difference Result 10501 states and 16888 transitions. [2020-10-14 10:07:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:14,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-14 10:07:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:14,965 INFO L225 Difference]: With dead ends: 10501 [2020-10-14 10:07:14,966 INFO L226 Difference]: Without dead ends: 5738 [2020-10-14 10:07:14,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5738 states. [2020-10-14 10:07:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5738 to 4782. [2020-10-14 10:07:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4782 states. [2020-10-14 10:07:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 7811 transitions. [2020-10-14 10:07:15,117 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 7811 transitions. Word has length 211 [2020-10-14 10:07:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:15,117 INFO L479 AbstractCegarLoop]: Abstraction has 4782 states and 7811 transitions. [2020-10-14 10:07:15,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 7811 transitions. [2020-10-14 10:07:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 10:07:15,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:15,122 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:15,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:07:15,122 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:15,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1532722644, now seen corresponding path program 1 times [2020-10-14 10:07:15,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:15,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071847906] [2020-10-14 10:07:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:18,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 10:07:18,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3747 [2020-10-14 10:07:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:07:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:07:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:18,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:18,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:18,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:18,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:18,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:18,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:07:18,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071847906] [2020-10-14 10:07:18,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:18,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:18,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212952381] [2020-10-14 10:07:18,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:18,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:18,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:18,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:18,997 INFO L87 Difference]: Start difference. First operand 4782 states and 7811 transitions. Second operand 5 states. [2020-10-14 10:07:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:20,150 INFO L93 Difference]: Finished difference Result 10483 states and 16834 transitions. [2020-10-14 10:07:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:20,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-14 10:07:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:20,158 INFO L225 Difference]: With dead ends: 10483 [2020-10-14 10:07:20,159 INFO L226 Difference]: Without dead ends: 5720 [2020-10-14 10:07:20,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2020-10-14 10:07:20,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 4800. [2020-10-14 10:07:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4800 states. [2020-10-14 10:07:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 7829 transitions. [2020-10-14 10:07:20,326 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 7829 transitions. Word has length 211 [2020-10-14 10:07:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:20,326 INFO L479 AbstractCegarLoop]: Abstraction has 4800 states and 7829 transitions. [2020-10-14 10:07:20,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 7829 transitions. [2020-10-14 10:07:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 10:07:20,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:20,331 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:20,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:07:20,331 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1628311581, now seen corresponding path program 1 times [2020-10-14 10:07:20,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:20,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005204662] [2020-10-14 10:07:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:25,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 10:07:25,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 10:07:25,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:25,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:07:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:07:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:25,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:25,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:25,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:07:25,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005204662] [2020-10-14 10:07:25,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:25,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:25,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086202748] [2020-10-14 10:07:25,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:25,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:25,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:25,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:25,490 INFO L87 Difference]: Start difference. First operand 4800 states and 7829 transitions. Second operand 5 states. [2020-10-14 10:07:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:26,706 INFO L93 Difference]: Finished difference Result 11302 states and 18247 transitions. [2020-10-14 10:07:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:26,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-14 10:07:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:26,715 INFO L225 Difference]: With dead ends: 11302 [2020-10-14 10:07:26,715 INFO L226 Difference]: Without dead ends: 6521 [2020-10-14 10:07:26,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2020-10-14 10:07:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 5367. [2020-10-14 10:07:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5367 states. [2020-10-14 10:07:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 8846 transitions. [2020-10-14 10:07:26,897 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 8846 transitions. Word has length 212 [2020-10-14 10:07:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:26,898 INFO L479 AbstractCegarLoop]: Abstraction has 5367 states and 8846 transitions. [2020-10-14 10:07:26,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 8846 transitions. [2020-10-14 10:07:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 10:07:26,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:26,905 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:26,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:07:26,905 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:26,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:26,905 INFO L82 PathProgramCache]: Analyzing trace with hash -490673608, now seen corresponding path program 1 times [2020-10-14 10:07:26,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:26,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669474686] [2020-10-14 10:07:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:31,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:31,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 10:07:31,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:07:31,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:31,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 10:07:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:07:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:32,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:32,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:32,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:32,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:32,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 10:07:32,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669474686] [2020-10-14 10:07:32,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:32,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:32,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175738377] [2020-10-14 10:07:32,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:32,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:32,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:32,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:32,052 INFO L87 Difference]: Start difference. First operand 5367 states and 8846 transitions. Second operand 5 states. [2020-10-14 10:07:33,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:33,253 INFO L93 Difference]: Finished difference Result 11599 states and 18832 transitions. [2020-10-14 10:07:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:33,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-14 10:07:33,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:33,262 INFO L225 Difference]: With dead ends: 11599 [2020-10-14 10:07:33,262 INFO L226 Difference]: Without dead ends: 6251 [2020-10-14 10:07:33,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2020-10-14 10:07:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5367. [2020-10-14 10:07:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5367 states. [2020-10-14 10:07:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 8828 transitions. [2020-10-14 10:07:33,431 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 8828 transitions. Word has length 212 [2020-10-14 10:07:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:33,432 INFO L479 AbstractCegarLoop]: Abstraction has 5367 states and 8828 transitions. [2020-10-14 10:07:33,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 8828 transitions. [2020-10-14 10:07:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 10:07:33,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:33,436 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:33,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:07:33,437 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1517335, now seen corresponding path program 1 times [2020-10-14 10:07:33,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:33,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566881485] [2020-10-14 10:07:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 10:07:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-14 10:07:34,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:34,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:07:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:07:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:34,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:34,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:34,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:34,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 10:07:35,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566881485] [2020-10-14 10:07:35,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:35,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:35,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220416034] [2020-10-14 10:07:35,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:35,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:35,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:35,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:35,003 INFO L87 Difference]: Start difference. First operand 5367 states and 8828 transitions. Second operand 5 states. [2020-10-14 10:07:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:36,210 INFO L93 Difference]: Finished difference Result 12436 states and 20245 transitions. [2020-10-14 10:07:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:36,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-14 10:07:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:36,221 INFO L225 Difference]: With dead ends: 12436 [2020-10-14 10:07:36,221 INFO L226 Difference]: Without dead ends: 7088 [2020-10-14 10:07:36,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2020-10-14 10:07:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 5367. [2020-10-14 10:07:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5367 states. [2020-10-14 10:07:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 8828 transitions. [2020-10-14 10:07:36,404 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 8828 transitions. Word has length 212 [2020-10-14 10:07:36,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:36,404 INFO L479 AbstractCegarLoop]: Abstraction has 5367 states and 8828 transitions. [2020-10-14 10:07:36,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 8828 transitions. [2020-10-14 10:07:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 10:07:36,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:36,411 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:36,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:07:36,411 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1259389200, now seen corresponding path program 1 times [2020-10-14 10:07:36,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:36,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693718414] [2020-10-14 10:07:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:41,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 10:07:41,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:07:41,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:41,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 10:07:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:07:41,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:41,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:41,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:41,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:07:41,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693718414] [2020-10-14 10:07:41,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:41,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:41,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054471014] [2020-10-14 10:07:41,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:41,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:41,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:41,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:41,599 INFO L87 Difference]: Start difference. First operand 5367 states and 8828 transitions. Second operand 5 states. [2020-10-14 10:07:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:42,719 INFO L93 Difference]: Finished difference Result 13075 states and 21342 transitions. [2020-10-14 10:07:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:42,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-14 10:07:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:42,728 INFO L225 Difference]: With dead ends: 13075 [2020-10-14 10:07:42,728 INFO L226 Difference]: Without dead ends: 7727 [2020-10-14 10:07:42,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7727 states. [2020-10-14 10:07:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7727 to 5367. [2020-10-14 10:07:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5367 states. [2020-10-14 10:07:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 8810 transitions. [2020-10-14 10:07:42,919 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 8810 transitions. Word has length 213 [2020-10-14 10:07:42,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:42,919 INFO L479 AbstractCegarLoop]: Abstraction has 5367 states and 8810 transitions. [2020-10-14 10:07:42,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 8810 transitions. [2020-10-14 10:07:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 10:07:42,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:42,924 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:42,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 10:07:42,924 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:42,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1469492986, now seen corresponding path program 1 times [2020-10-14 10:07:42,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:42,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048741256] [2020-10-14 10:07:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:42,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:47,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:47,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 10:07:47,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:47,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:07:47,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:47,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:07:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 10:07:47,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:48,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:48,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:48,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:48,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:48,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:07:48,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:48,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:48,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:48,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:48,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:07:48,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048741256] [2020-10-14 10:07:48,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:48,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:48,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521160148] [2020-10-14 10:07:48,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:48,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:48,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:48,072 INFO L87 Difference]: Start difference. First operand 5367 states and 8810 transitions. Second operand 5 states. [2020-10-14 10:07:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:49,318 INFO L93 Difference]: Finished difference Result 12436 states and 20191 transitions. [2020-10-14 10:07:49,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:49,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-14 10:07:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:49,327 INFO L225 Difference]: With dead ends: 12436 [2020-10-14 10:07:49,328 INFO L226 Difference]: Without dead ends: 7088 [2020-10-14 10:07:49,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2020-10-14 10:07:49,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 5988. [2020-10-14 10:07:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5988 states. [2020-10-14 10:07:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 9917 transitions. [2020-10-14 10:07:49,532 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 9917 transitions. Word has length 215 [2020-10-14 10:07:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:49,533 INFO L479 AbstractCegarLoop]: Abstraction has 5988 states and 9917 transitions. [2020-10-14 10:07:49,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 9917 transitions. [2020-10-14 10:07:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 10:07:49,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:49,538 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:49,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 10:07:49,538 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1097448262, now seen corresponding path program 1 times [2020-10-14 10:07:49,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:49,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363102471] [2020-10-14 10:07:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:51,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:51,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 10:07:51,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-14 10:07:51,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:51,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:07:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 10:07:51,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:51,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:51,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:51,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:51,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:51,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:51,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 10:07:51,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363102471] [2020-10-14 10:07:51,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:51,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:51,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716569685] [2020-10-14 10:07:51,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:51,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:51,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:51,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:51,197 INFO L87 Difference]: Start difference. First operand 5988 states and 9917 transitions. Second operand 5 states. [2020-10-14 10:07:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:52,562 INFO L93 Difference]: Finished difference Result 13678 states and 22405 transitions. [2020-10-14 10:07:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:52,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-14 10:07:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:52,572 INFO L225 Difference]: With dead ends: 13678 [2020-10-14 10:07:52,572 INFO L226 Difference]: Without dead ends: 7709 [2020-10-14 10:07:52,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7709 states. [2020-10-14 10:07:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7709 to 5988. [2020-10-14 10:07:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5988 states. [2020-10-14 10:07:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 9917 transitions. [2020-10-14 10:07:52,790 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 9917 transitions. Word has length 215 [2020-10-14 10:07:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:52,790 INFO L479 AbstractCegarLoop]: Abstraction has 5988 states and 9917 transitions. [2020-10-14 10:07:52,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 9917 transitions. [2020-10-14 10:07:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 10:07:52,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:52,795 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:52,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 10:07:52,796 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:52,796 INFO L82 PathProgramCache]: Analyzing trace with hash 294792246, now seen corresponding path program 1 times [2020-10-14 10:07:52,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:52,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027363918] [2020-10-14 10:07:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:52,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:57,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:57,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 10:07:57,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 10:07:57,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:57,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:07:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 10:07:57,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:07:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:57,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:57,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:57,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 10:07:57,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027363918] [2020-10-14 10:07:57,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:57,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:57,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805019387] [2020-10-14 10:07:57,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:57,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:57,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:57,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:57,965 INFO L87 Difference]: Start difference. First operand 5988 states and 9917 transitions. Second operand 5 states. [2020-10-14 10:07:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:59,319 INFO L93 Difference]: Finished difference Result 13642 states and 22351 transitions. [2020-10-14 10:07:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:59,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-14 10:07:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:59,329 INFO L225 Difference]: With dead ends: 13642 [2020-10-14 10:07:59,329 INFO L226 Difference]: Without dead ends: 7673 [2020-10-14 10:07:59,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7673 states. [2020-10-14 10:07:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7673 to 6627. [2020-10-14 10:07:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6627 states. [2020-10-14 10:07:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 11042 transitions. [2020-10-14 10:07:59,594 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 11042 transitions. Word has length 216 [2020-10-14 10:07:59,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:59,594 INFO L479 AbstractCegarLoop]: Abstraction has 6627 states and 11042 transitions. [2020-10-14 10:07:59,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 11042 transitions. [2020-10-14 10:07:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 10:07:59,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:59,599 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:59,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 10:07:59,599 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:59,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:59,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1214834893, now seen corresponding path program 1 times [2020-10-14 10:07:59,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:59,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541492068] [2020-10-14 10:07:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking...