/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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 10:16:54,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:16:54,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:16:54,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:16:54,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:16:54,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:16:54,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:16:54,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:16:54,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:16:54,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:16:54,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:16:54,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:16:54,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:16:54,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:16:54,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:16:54,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:16:54,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:16:54,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:16:54,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:16:54,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:16:54,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:16:54,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:16:54,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:16:54,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:16:54,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:16:54,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:16:54,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:16:54,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:16:54,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:16:54,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:16:54,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:16:54,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:16:54,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:16:54,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:16:54,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:16:54,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:16:54,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:16:54,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:16:54,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:16:54,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:16:54,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:16:54,424 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 10:16:54,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:16:54,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:16:54,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:16:54,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:16:54,451 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:16:54,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:16:54,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:16:54,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:16:54,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:16:54,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:16:54,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:16:54,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:16:54,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:16:54,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:16:54,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:16:54,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:16:54,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:16:54,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:16:54,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:16:54,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:16:54,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:16:54,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:16:54,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:16:54,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:16:54,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:16:54,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:16:54,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:16:54,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:16:54,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:16:54,456 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:16:54,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:16:54,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:16:54,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:16:54,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:16:54,987 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:16:54,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 10:16:55,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29e493f45/e96982f59e6f455d80cf3525291b8607/FLAG633ccdcc8 [2020-09-25 10:16:55,648 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:16:55,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 10:16:55,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29e493f45/e96982f59e6f455d80cf3525291b8607/FLAG633ccdcc8 [2020-09-25 10:16:55,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29e493f45/e96982f59e6f455d80cf3525291b8607 [2020-09-25 10:16:55,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:16:55,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:16:55,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:16:55,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:16:55,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:16:55,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:16:55" (1/1) ... [2020-09-25 10:16:55,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d8e50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:55, skipping insertion in model container [2020-09-25 10:16:55,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:16:55" (1/1) ... [2020-09-25 10:16:56,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:16:56,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:16:56,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:16:56,328 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:16:56,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:16:56,478 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:16:56,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56 WrapperNode [2020-09-25 10:16:56,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:16:56,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:16:56,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:16:56,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:16:56,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (1/1) ... [2020-09-25 10:16:56,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (1/1) ... [2020-09-25 10:16:56,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (1/1) ... [2020-09-25 10:16:56,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (1/1) ... [2020-09-25 10:16:56,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (1/1) ... [2020-09-25 10:16:56,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (1/1) ... [2020-09-25 10:16:56,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (1/1) ... [2020-09-25 10:16:56,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:16:56,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:16:56,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:16:56,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:16:56,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (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 10:16:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:16:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:16:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:16:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 10:16:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 10:16:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:16:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:16:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:16:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 10:16:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 10:16:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 10:16:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 10:16:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 10:16:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 10:16:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 10:16:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 10:16:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 10:16:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 10:16:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 10:16:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 10:16:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 10:16:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 10:16:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 10:16:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 10:16:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 10:16:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 10:16:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 10:16:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 10:16:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 10:16:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 10:16:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 10:16:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 10:16:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 10:16:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 10:16:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:16:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:16:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:16:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:16:56,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:16:56,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:16:56,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:16:57,085 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:16:57,085 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 10:16:57,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:16:57 BoogieIcfgContainer [2020-09-25 10:16:57,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:16:57,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:16:57,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:16:57,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:16:57,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:16:55" (1/3) ... [2020-09-25 10:16:57,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c596bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:16:57, skipping insertion in model container [2020-09-25 10:16:57,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:56" (2/3) ... [2020-09-25 10:16:57,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c596bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:16:57, skipping insertion in model container [2020-09-25 10:16:57,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:16:57" (3/3) ... [2020-09-25 10:16:57,104 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 10:16:57,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:16:57,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:16:57,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:16:57,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:16:57,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:16:57,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:16:57,178 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:16:57,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:16:57,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:16:57,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:16:57,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:16:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 10:16:57,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 10:16:57,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:57,218 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 10:16:57,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 10:16:57,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:57,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142717562] [2020-09-25 10:16:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:57,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:58,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:59,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:59,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:16:59,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:16:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2221 [2020-09-25 10:16:59,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:59,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:16:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:16:59,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:16:59,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:16:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:59,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:59,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:59,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:16:59,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:59,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:16:59,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:16:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:16:59,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:16:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:59,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:16:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:16:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:16:59,957 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 10:16:59,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142717562] [2020-09-25 10:16:59,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:16:59,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:16:59,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118493095] [2020-09-25 10:16:59,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:16:59,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:00,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:00,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:00,011 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 10:17:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:00,729 INFO L93 Difference]: Finished difference Result 325 states and 377 transitions. [2020-09-25 10:17:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:17:00,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-09-25 10:17:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:00,750 INFO L225 Difference]: With dead ends: 325 [2020-09-25 10:17:00,750 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 10:17:00,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:17:00,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 10:17:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2020-09-25 10:17:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 10:17:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2020-09-25 10:17:00,834 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 48 [2020-09-25 10:17:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:00,835 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2020-09-25 10:17:00,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2020-09-25 10:17:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:17:00,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:00,840 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 10:17:00,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:17:00,841 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash 279562443, now seen corresponding path program 1 times [2020-09-25 10:17:00,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:00,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131878418] [2020-09-25 10:17:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:01,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:05,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:05,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:17:05,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:17:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:17:05,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:05,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 10:17:05,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:17:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:05,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:05,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:05,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:05,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:05,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:05,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 10:17:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:06,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:06,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:06,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:17:06,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:06,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:17:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:06,020 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 10:17:06,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131878418] [2020-09-25 10:17:06,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:06,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:06,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467482447] [2020-09-25 10:17:06,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:06,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:06,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:06,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:06,026 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand 8 states. [2020-09-25 10:17:06,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:06,592 INFO L93 Difference]: Finished difference Result 228 states and 256 transitions. [2020-09-25 10:17:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:17:06,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 10:17:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:06,602 INFO L225 Difference]: With dead ends: 228 [2020-09-25 10:17:06,604 INFO L226 Difference]: Without dead ends: 226 [2020-09-25 10:17:06,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:17:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-25 10:17:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 168. [2020-09-25 10:17:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 10:17:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2020-09-25 10:17:06,638 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 62 [2020-09-25 10:17:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:06,639 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2020-09-25 10:17:06,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2020-09-25 10:17:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 10:17:06,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:06,642 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] [2020-09-25 10:17:06,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:17:06,643 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash -53936734, now seen corresponding path program 1 times [2020-09-25 10:17:06,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:06,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687210199] [2020-09-25 10:17:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:07,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:07,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:11,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:11,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:17:11,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:17:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:17:11,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:11,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:17:11,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:17:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:11,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:11,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:11,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:11,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:11,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:11,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:11,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:11,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:17:11,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:11,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:11,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:11,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:11,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:17:11,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:11,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:17:11,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:11,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:17:11,866 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 10:17:11,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687210199] [2020-09-25 10:17:11,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:11,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:11,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418248330] [2020-09-25 10:17:11,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:11,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:11,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:11,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:11,871 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand 8 states. [2020-09-25 10:17:12,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:12,403 INFO L93 Difference]: Finished difference Result 326 states and 367 transitions. [2020-09-25 10:17:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:17:12,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 10:17:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:12,406 INFO L225 Difference]: With dead ends: 326 [2020-09-25 10:17:12,406 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 10:17:12,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:17:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 10:17:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 196. [2020-09-25 10:17:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 10:17:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 221 transitions. [2020-09-25 10:17:12,422 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 221 transitions. Word has length 63 [2020-09-25 10:17:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:12,422 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 221 transitions. [2020-09-25 10:17:12,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 221 transitions. [2020-09-25 10:17:12,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 10:17:12,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:12,426 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] [2020-09-25 10:17:12,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:17:12,426 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:12,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:12,427 INFO L82 PathProgramCache]: Analyzing trace with hash 322027262, now seen corresponding path program 1 times [2020-09-25 10:17:12,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:12,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439245412] [2020-09-25 10:17:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:13,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:13,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:17:17,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:17:17,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:17:17,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:17,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:17:17,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:17,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 10:17:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:17,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:17,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:17,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:17,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:17,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:17,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:17:17,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:17,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,554 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 10:17:17,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439245412] [2020-09-25 10:17:17,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:17,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:17,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598027967] [2020-09-25 10:17:17,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:17,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:17,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:17,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:17,559 INFO L87 Difference]: Start difference. First operand 196 states and 221 transitions. Second operand 8 states. [2020-09-25 10:17:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:17,999 INFO L93 Difference]: Finished difference Result 324 states and 364 transitions. [2020-09-25 10:17:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:17:18,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 10:17:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:18,004 INFO L225 Difference]: With dead ends: 324 [2020-09-25 10:17:18,004 INFO L226 Difference]: Without dead ends: 232 [2020-09-25 10:17:18,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:17:18,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-25 10:17:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 197. [2020-09-25 10:17:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 10:17:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2020-09-25 10:17:18,025 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 63 [2020-09-25 10:17:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:18,026 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2020-09-25 10:17:18,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2020-09-25 10:17:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 10:17:18,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:18,029 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 10:17:18,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:17:18,029 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:18,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1860552927, now seen corresponding path program 1 times [2020-09-25 10:17:18,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:18,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223722948] [2020-09-25 10:17:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:23,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:23,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:17:23,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:17:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:17:23,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:23,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:17:23,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:23,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:23,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:23,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:23,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:17:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:23,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:23,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:23,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:23,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:23,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:17:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:23,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:23,146 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 10:17:23,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223722948] [2020-09-25 10:17:23,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:23,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:23,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967833443] [2020-09-25 10:17:23,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:23,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:23,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:23,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:23,149 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand 8 states. [2020-09-25 10:17:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:23,663 INFO L93 Difference]: Finished difference Result 344 states and 387 transitions. [2020-09-25 10:17:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:17:23,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-25 10:17:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:23,667 INFO L225 Difference]: With dead ends: 344 [2020-09-25 10:17:23,668 INFO L226 Difference]: Without dead ends: 255 [2020-09-25 10:17:23,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:17:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-25 10:17:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 206. [2020-09-25 10:17:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-25 10:17:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 233 transitions. [2020-09-25 10:17:23,695 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 233 transitions. Word has length 65 [2020-09-25 10:17:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:23,695 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 233 transitions. [2020-09-25 10:17:23,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 233 transitions. [2020-09-25 10:17:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 10:17:23,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:23,697 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 10:17:23,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:17:23,698 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:23,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2088092010, now seen corresponding path program 1 times [2020-09-25 10:17:23,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:23,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668078697] [2020-09-25 10:17:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:23,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:23,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:17:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:17:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:17:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:17:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:28,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:28,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:28,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 10:17:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:28,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:17:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:28,835 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 10:17:28,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668078697] [2020-09-25 10:17:28,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:28,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:17:28,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428486270] [2020-09-25 10:17:28,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:17:28,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:28,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:17:28,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:28,838 INFO L87 Difference]: Start difference. First operand 206 states and 233 transitions. Second operand 10 states. [2020-09-25 10:17:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:29,524 INFO L93 Difference]: Finished difference Result 336 states and 378 transitions. [2020-09-25 10:17:29,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:17:29,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-09-25 10:17:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:29,527 INFO L225 Difference]: With dead ends: 336 [2020-09-25 10:17:29,528 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 10:17:29,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:17:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 10:17:29,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 206. [2020-09-25 10:17:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-25 10:17:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 231 transitions. [2020-09-25 10:17:29,539 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 231 transitions. Word has length 66 [2020-09-25 10:17:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:29,539 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 231 transitions. [2020-09-25 10:17:29,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:17:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 231 transitions. [2020-09-25 10:17:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 10:17:29,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:29,541 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 10:17:29,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:17:29,541 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:29,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:29,541 INFO L82 PathProgramCache]: Analyzing trace with hash 206126609, now seen corresponding path program 1 times [2020-09-25 10:17:29,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:29,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185298720] [2020-09-25 10:17:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:29,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:34,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:34,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:17:34,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:17:34,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:17:34,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:34,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:17:34,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:34,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:34,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:34,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:34,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:34,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:34,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 10:17:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:34,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:34,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:34,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:34,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:34,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:17:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:34,656 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 10:17:34,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185298720] [2020-09-25 10:17:34,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:34,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:34,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799348480] [2020-09-25 10:17:34,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:34,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:34,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:34,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:34,659 INFO L87 Difference]: Start difference. First operand 206 states and 231 transitions. Second operand 8 states. [2020-09-25 10:17:35,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:35,409 INFO L93 Difference]: Finished difference Result 562 states and 640 transitions. [2020-09-25 10:17:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:17:35,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-25 10:17:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:35,413 INFO L225 Difference]: With dead ends: 562 [2020-09-25 10:17:35,413 INFO L226 Difference]: Without dead ends: 451 [2020-09-25 10:17:35,416 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 10:17:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-25 10:17:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 274. [2020-09-25 10:17:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 10:17:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 314 transitions. [2020-09-25 10:17:35,437 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 314 transitions. Word has length 66 [2020-09-25 10:17:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:35,438 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 314 transitions. [2020-09-25 10:17:35,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 314 transitions. [2020-09-25 10:17:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:17:35,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:35,439 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] [2020-09-25 10:17:35,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:17:35,440 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:35,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:35,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1954483592, now seen corresponding path program 1 times [2020-09-25 10:17:35,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:35,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984924464] [2020-09-25 10:17:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:17:40,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:17:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:17:40,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:40,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:17:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:40,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:40,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:40,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:40,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 10:17:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:40,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:40,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:40,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:40,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:17:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:40,571 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 10:17:40,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984924464] [2020-09-25 10:17:40,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:40,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:40,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048465448] [2020-09-25 10:17:40,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:40,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:40,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:40,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:40,575 INFO L87 Difference]: Start difference. First operand 274 states and 314 transitions. Second operand 8 states. [2020-09-25 10:17:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:41,084 INFO L93 Difference]: Finished difference Result 448 states and 511 transitions. [2020-09-25 10:17:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:17:41,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 10:17:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:41,089 INFO L225 Difference]: With dead ends: 448 [2020-09-25 10:17:41,090 INFO L226 Difference]: Without dead ends: 313 [2020-09-25 10:17:41,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:17:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-25 10:17:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 273. [2020-09-25 10:17:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-09-25 10:17:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 312 transitions. [2020-09-25 10:17:41,101 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 312 transitions. Word has length 67 [2020-09-25 10:17:41,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:41,102 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 312 transitions. [2020-09-25 10:17:41,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 312 transitions. [2020-09-25 10:17:41,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 10:17:41,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:41,103 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 10:17:41,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:17:41,104 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:41,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:41,104 INFO L82 PathProgramCache]: Analyzing trace with hash -516108019, now seen corresponding path program 1 times [2020-09-25 10:17:41,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:41,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355072994] [2020-09-25 10:17:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:46,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:46,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:17:46,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:17:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:17:46,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:46,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:17:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:17:46,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:46,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:46,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:46,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:46,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:46,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:46,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 10:17:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:46,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:46,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:46,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:46,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:46,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:17:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:17:46,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355072994] [2020-09-25 10:17:46,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:46,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:17:46,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283288244] [2020-09-25 10:17:46,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:17:46,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:46,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:17:46,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:46,269 INFO L87 Difference]: Start difference. First operand 273 states and 312 transitions. Second operand 10 states. [2020-09-25 10:17:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:46,939 INFO L93 Difference]: Finished difference Result 462 states and 524 transitions. [2020-09-25 10:17:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:17:46,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-09-25 10:17:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:46,942 INFO L225 Difference]: With dead ends: 462 [2020-09-25 10:17:46,943 INFO L226 Difference]: Without dead ends: 319 [2020-09-25 10:17:46,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:17:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-09-25 10:17:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 273. [2020-09-25 10:17:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-09-25 10:17:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 311 transitions. [2020-09-25 10:17:46,973 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 311 transitions. Word has length 68 [2020-09-25 10:17:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:46,974 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 311 transitions. [2020-09-25 10:17:46,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:17:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 311 transitions. [2020-09-25 10:17:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 10:17:46,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:46,975 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] [2020-09-25 10:17:46,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:17:46,977 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:46,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:46,978 INFO L82 PathProgramCache]: Analyzing trace with hash -308341723, now seen corresponding path program 1 times [2020-09-25 10:17:46,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:46,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770317068] [2020-09-25 10:17:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:47,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking...