/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 SingleStatement --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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:10:30,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:10:30,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:10:30,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:10:30,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:10:30,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:10:30,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:10:30,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:10:30,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:10:30,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:10:30,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:10:30,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:10:30,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:10:30,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:10:30,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:10:30,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:10:30,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:10:30,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:10:30,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:10:30,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:10:30,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:10:30,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:10:30,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:10:30,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:10:30,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:10:30,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:10:30,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:10:30,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:10:30,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:10:30,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:10:30,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:10:30,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:10:30,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:10:30,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:10:30,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:10:30,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:10:30,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:10:30,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:10:30,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:10:30,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:10:30,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:10:30,943 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 [2020-09-25 09:10:31,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:10:31,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:10:31,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:10:31,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:10:31,011 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:10:31,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:10:31,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:10:31,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:10:31,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:10:31,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:10:31,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:10:31,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:10:31,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:10:31,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:10:31,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:10:31,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:10:31,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:10:31,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:10:31,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:10:31,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:10:31,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:10:31,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:10:31,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:10:31,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:10:31,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:10:31,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:10:31,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:10:31,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:10:31,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:10:31,017 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 -> SingleStatement 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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=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=1.0;log-additional-information=true; [2020-09-25 09:10:31,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:10:31,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:10:31,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:10:31,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:10:31,496 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:10:31,497 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 09:10:31,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07531d9c1/b7cecff2bd464f00898830a05757548b/FLAGdcdad6a81 [2020-09-25 09:10:32,144 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:10:32,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 09:10:32,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07531d9c1/b7cecff2bd464f00898830a05757548b/FLAGdcdad6a81 [2020-09-25 09:10:32,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07531d9c1/b7cecff2bd464f00898830a05757548b [2020-09-25 09:10:32,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:10:32,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:10:32,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:32,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:10:32,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:10:32,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:32" (1/1) ... [2020-09-25 09:10:32,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:32, skipping insertion in model container [2020-09-25 09:10:32,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:32" (1/1) ... [2020-09-25 09:10:32,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:10:32,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:10:32,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:32,912 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:10:33,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:33,056 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:10:33,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33 WrapperNode [2020-09-25 09:10:33,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:33,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:10:33,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:10:33,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:10:33,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (1/1) ... [2020-09-25 09:10:33,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (1/1) ... [2020-09-25 09:10:33,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (1/1) ... [2020-09-25 09:10:33,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (1/1) ... [2020-09-25 09:10:33,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (1/1) ... [2020-09-25 09:10:33,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (1/1) ... [2020-09-25 09:10:33,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (1/1) ... [2020-09-25 09:10:33,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:10:33,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:10:33,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:10:33,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:10:33,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (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 [2020-09-25 09:10:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:10:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:10:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:10:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 09:10:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 09:10:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 09:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 09:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 09:10:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 09:10:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 09:10:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 09:10:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 09:10:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 09:10:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 09:10:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 09:10:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 09:10:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 09:10:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 09:10:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 09:10:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 09:10:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 09:10:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 09:10:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 09:10:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 09:10:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 09:10:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 09:10:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 09:10:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 09:10:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 09:10:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 09:10:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 09:10:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 09:10:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 09:10:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 09:10:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 09:10:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:10:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:10:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:10:33,632 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:10:33,632 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 09:10:33,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:33 BoogieIcfgContainer [2020-09-25 09:10:33,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:10:33,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:10:33,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:10:33,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:10:33,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:10:32" (1/3) ... [2020-09-25 09:10:33,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aede06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:33, skipping insertion in model container [2020-09-25 09:10:33,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:33" (2/3) ... [2020-09-25 09:10:33,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aede06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:33, skipping insertion in model container [2020-09-25 09:10:33,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:33" (3/3) ... [2020-09-25 09:10:33,648 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 09:10:33,660 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:10:33,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:10:33,692 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:10:33,725 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:10:33,726 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:10:33,726 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:10:33,726 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:10:33,726 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:10:33,726 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:10:33,727 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:10:33,727 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:10:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 09:10:33,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 09:10:33,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:33,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:33,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:33,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 09:10:33,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:33,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883870427] [2020-09-25 09:10:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:34,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:34,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:36,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:36,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 09:10:36,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:10:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2345 [2020-09-25 09:10:36,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:36,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 09:10:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:10:36,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:36,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:36,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:10:36,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:36,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:36,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:36,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 09:10:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:36,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:36,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:10:36,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:10:36,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:36,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:10:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:36,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883870427] [2020-09-25 09:10:36,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:36,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 09:10:36,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396526198] [2020-09-25 09:10:36,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 09:10:36,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:36,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 09:10:36,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 09:10:36,488 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 09:10:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:36,811 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-09-25 09:10:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 09:10:36,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-25 09:10:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:36,837 INFO L225 Difference]: With dead ends: 227 [2020-09-25 09:10:36,837 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 09:10:36,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 09:10:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 09:10:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 09:10:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 09:10:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 09:10:36,938 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-09-25 09:10:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:36,939 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 09:10:36,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 09:10:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 09:10:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 09:10:36,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:36,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:36,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:10:36,954 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-09-25 09:10:36,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:36,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810713091] [2020-09-25 09:10:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:41,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:41,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 09:10:41,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:10:41,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:10:41,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:41,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:10:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 09:10:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 09:10:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:42,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:42,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:42,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:42,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:10:42,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:42,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:42,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:10:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:42,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:42,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:10:42,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:10:42,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:42,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:10:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:42,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810713091] [2020-09-25 09:10:42,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:42,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:10:42,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354872363] [2020-09-25 09:10:42,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:10:42,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:42,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:10:42,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:10:42,108 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-09-25 09:10:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:42,386 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-09-25 09:10:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 09:10:42,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 09:10:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:42,389 INFO L225 Difference]: With dead ends: 189 [2020-09-25 09:10:42,389 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 09:10:42,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:10:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 09:10:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-09-25 09:10:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 09:10:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-09-25 09:10:42,402 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-09-25 09:10:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:42,402 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-09-25 09:10:42,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:10:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-09-25 09:10:42,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 09:10:42,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:42,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:42,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:10:42,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:42,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:42,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-09-25 09:10:42,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:42,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981347958] [2020-09-25 09:10:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:42,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:42,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:44,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:44,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:10:44,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:10:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2236 [2020-09-25 09:10:44,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:44,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:10:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:10:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:10:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:44,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:44,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:44,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:44,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:10:44,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:44,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:44,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 09:10:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:44,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:44,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:10:44,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:44,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:10:44,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:44,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:10:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:10:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:44,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981347958] [2020-09-25 09:10:44,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:44,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:10:44,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371520004] [2020-09-25 09:10:44,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:10:44,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:44,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:10:44,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:10:44,791 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-09-25 09:10:45,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:45,201 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2020-09-25 09:10:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:10:45,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 09:10:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:45,208 INFO L225 Difference]: With dead ends: 208 [2020-09-25 09:10:45,208 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 09:10:45,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:10:45,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 09:10:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 163. [2020-09-25 09:10:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 09:10:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2020-09-25 09:10:45,229 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 62 [2020-09-25 09:10:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:45,230 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2020-09-25 09:10:45,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:10:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2020-09-25 09:10:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 09:10:45,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:45,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:45,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:10:45,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:45,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:45,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-25 09:10:45,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:45,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107411964] [2020-09-25 09:10:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:45,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:45,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:48,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:50,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:50,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:10:50,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:10:50,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:10:50,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:50,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:50,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:10:50,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:10:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 09:10:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:10:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:50,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:10:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:50,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:50,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:10:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:50,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:50,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:10:50,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:10:50,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:50,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:50,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:10:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:10:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:50,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107411964] [2020-09-25 09:10:50,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:50,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 09:10:50,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115354263] [2020-09-25 09:10:50,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:10:50,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:50,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:10:50,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:10:50,417 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand 10 states. [2020-09-25 09:10:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:50,937 INFO L93 Difference]: Finished difference Result 329 states and 370 transitions. [2020-09-25 09:10:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:10:50,938 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-09-25 09:10:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:50,943 INFO L225 Difference]: With dead ends: 329 [2020-09-25 09:10:50,943 INFO L226 Difference]: Without dead ends: 239 [2020-09-25 09:10:50,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:10:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-25 09:10:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 191. [2020-09-25 09:10:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 09:10:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 215 transitions. [2020-09-25 09:10:50,980 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 215 transitions. Word has length 65 [2020-09-25 09:10:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:50,981 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 215 transitions. [2020-09-25 09:10:50,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:10:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 215 transitions. [2020-09-25 09:10:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 09:10:50,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:50,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:50,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:10:50,986 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:50,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:50,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-25 09:10:50,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:50,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858192849] [2020-09-25 09:10:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:51,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:51,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:54,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:54,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:10:54,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:10:54,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3582 [2020-09-25 09:10:54,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:54,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:10:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:10:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:10:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:54,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:54,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:54,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:54,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:10:54,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:54,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:54,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:10:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:54,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:10:54,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:54,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:10:54,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:54,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:10:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:54,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:54,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858192849] [2020-09-25 09:10:54,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:54,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:10:54,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638019434] [2020-09-25 09:10:54,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:10:54,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:54,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:10:54,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:10:54,661 INFO L87 Difference]: Start difference. First operand 191 states and 215 transitions. Second operand 6 states. [2020-09-25 09:10:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:54,901 INFO L93 Difference]: Finished difference Result 367 states and 414 transitions. [2020-09-25 09:10:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:10:54,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-09-25 09:10:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:54,904 INFO L225 Difference]: With dead ends: 367 [2020-09-25 09:10:54,904 INFO L226 Difference]: Without dead ends: 259 [2020-09-25 09:10:54,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:10:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-25 09:10:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 197. [2020-09-25 09:10:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 09:10:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2020-09-25 09:10:54,927 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 65 [2020-09-25 09:10:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:54,927 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2020-09-25 09:10:54,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:10:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2020-09-25 09:10:54,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 09:10:54,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:54,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:54,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:10:54,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:54,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:54,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1905607281, now seen corresponding path program 1 times [2020-09-25 09:10:54,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:54,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179944428] [2020-09-25 09:10:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:54,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:55,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:55,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:59,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:10:59,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:10:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:10:59,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:59,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:10:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:10:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 09:10:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:00,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:00,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:00,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:00,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:00,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:00,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:11:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:00,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:11:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:11:00,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:00,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:11:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:11:00,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179944428] [2020-09-25 09:11:00,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:11:00,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:11:00,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73079745] [2020-09-25 09:11:00,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:11:00,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:00,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:11:00,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:11:00,163 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand 8 states. [2020-09-25 09:11:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:00,586 INFO L93 Difference]: Finished difference Result 240 states and 267 transitions. [2020-09-25 09:11:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:11:00,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-25 09:11:00,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:00,590 INFO L225 Difference]: With dead ends: 240 [2020-09-25 09:11:00,591 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 09:11:00,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:11:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 09:11:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 203. [2020-09-25 09:11:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-25 09:11:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 226 transitions. [2020-09-25 09:11:00,600 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 226 transitions. Word has length 66 [2020-09-25 09:11:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:00,601 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 226 transitions. [2020-09-25 09:11:00,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:11:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 226 transitions. [2020-09-25 09:11:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 09:11:00,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:00,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:00,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:11:00,604 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:00,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:00,604 INFO L82 PathProgramCache]: Analyzing trace with hash -508291602, now seen corresponding path program 1 times [2020-09-25 09:11:00,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:00,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355711415] [2020-09-25 09:11:00,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 09:11:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:11:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4839 [2020-09-25 09:11:05,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:05,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:11:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:11:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:11:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:05,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:05,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:05,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:05,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:05,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:05,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 09:11:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:05,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:05,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:11:05,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:05,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:05,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:11:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:11:05,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355711415] [2020-09-25 09:11:05,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:11:05,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:11:05,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650070151] [2020-09-25 09:11:05,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:11:05,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:05,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:11:05,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:11:05,578 INFO L87 Difference]: Start difference. First operand 203 states and 226 transitions. Second operand 8 states. [2020-09-25 09:11:06,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:06,235 INFO L93 Difference]: Finished difference Result 581 states and 656 transitions. [2020-09-25 09:11:06,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:11:06,235 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-09-25 09:11:06,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:06,239 INFO L225 Difference]: With dead ends: 581 [2020-09-25 09:11:06,239 INFO L226 Difference]: Without dead ends: 456 [2020-09-25 09:11:06,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:11:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-09-25 09:11:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 275. [2020-09-25 09:11:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-25 09:11:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 312 transitions. [2020-09-25 09:11:06,252 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 312 transitions. Word has length 68 [2020-09-25 09:11:06,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:06,253 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 312 transitions. [2020-09-25 09:11:06,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:11:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 312 transitions. [2020-09-25 09:11:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 09:11:06,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:06,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:06,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:11:06,255 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:06,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:06,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1978313944, now seen corresponding path program 1 times [2020-09-25 09:11:06,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:06,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471720516] [2020-09-25 09:11:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 09:11:11,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:11:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:11:11,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:11:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:11:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:11:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:11,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:11,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:11:11,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 09:11:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:11:11,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:11:11,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:11:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:11:11,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471720516] [2020-09-25 09:11:11,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:11:11,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:11:11,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027829790] [2020-09-25 09:11:11,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:11:11,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:11,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:11:11,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:11:11,402 INFO L87 Difference]: Start difference. First operand 275 states and 312 transitions. Second operand 8 states. [2020-09-25 09:11:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:11,922 INFO L93 Difference]: Finished difference Result 691 states and 784 transitions. [2020-09-25 09:11:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:11:11,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-09-25 09:11:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:11,933 INFO L225 Difference]: With dead ends: 691 [2020-09-25 09:11:11,933 INFO L226 Difference]: Without dead ends: 541 [2020-09-25 09:11:11,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:11:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-09-25 09:11:11,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 319. [2020-09-25 09:11:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-09-25 09:11:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 362 transitions. [2020-09-25 09:11:11,961 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 362 transitions. Word has length 71 [2020-09-25 09:11:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:11,963 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 362 transitions. [2020-09-25 09:11:11,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:11:11,963 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 362 transitions. [2020-09-25 09:11:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 09:11:11,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:11,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:11,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:11:11,969 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:11,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:11,969 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-09-25 09:11:11,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:11,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484854624] [2020-09-25 09:11:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:12,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:11:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:11:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:11:16,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:11:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:11:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 09:11:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:17,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:17,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:17,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:11:17,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:11:17,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:17,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:11:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:17,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:17,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:11:17,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:11:17,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:17,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:11:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:11:17,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484854624] [2020-09-25 09:11:17,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:17,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:11:17,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051074834] [2020-09-25 09:11:17,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:11:17,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:11:17,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:11:17,186 INFO L87 Difference]: Start difference. First operand 319 states and 362 transitions. Second operand 10 states. [2020-09-25 09:11:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:18,138 INFO L93 Difference]: Finished difference Result 495 states and 560 transitions. [2020-09-25 09:11:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:11:18,139 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-09-25 09:11:18,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:18,144 INFO L225 Difference]: With dead ends: 495 [2020-09-25 09:11:18,144 INFO L226 Difference]: Without dead ends: 493 [2020-09-25 09:11:18,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:11:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-09-25 09:11:18,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 385. [2020-09-25 09:11:18,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-09-25 09:11:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 441 transitions. [2020-09-25 09:11:18,171 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 441 transitions. Word has length 72 [2020-09-25 09:11:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:18,172 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 441 transitions. [2020-09-25 09:11:18,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:11:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 441 transitions. [2020-09-25 09:11:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 09:11:18,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:18,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:18,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:11:18,175 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:18,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:18,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1474625812, now seen corresponding path program 1 times [2020-09-25 09:11:18,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:18,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603615923] [2020-09-25 09:11:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:18,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking...