/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=NARROWEST --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 02:19:21,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:19:21,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:19:21,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:19:21,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:19:21,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:19:21,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:19:21,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:19:21,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:19:21,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:19:21,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:19:21,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:19:21,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:19:21,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:19:21,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:19:21,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:19:21,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:19:21,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:19:21,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:19:21,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:19:21,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:19:21,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:19:21,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:19:21,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:19:21,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:19:21,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:19:21,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:19:21,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:19:21,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:19:21,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:19:21,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:19:21,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:19:21,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:19:21,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:19:21,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:19:21,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:19:21,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:19:21,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:19:21,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:19:21,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:19:21,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:19:21,411 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 02:19:21,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:19:21,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:19:21,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:19:21,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:19:21,470 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:19:21,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:19:21,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:19:21,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:19:21,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:19:21,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:19:21,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:19:21,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:19:21,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:19:21,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:19:21,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:19:21,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:19:21,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:19:21,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:19:21,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:19:21,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:19:21,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:19:21,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:21,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:19:21,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:19:21,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:19:21,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:19:21,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:19:21,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:19:21,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:19:21,478 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:19:21,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:19:22,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:19:22,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:19:22,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:19:22,014 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:19:22,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 02:19:22,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/376f0d990/ff3fd58915d545618b8158941763c8e2/FLAG6936b6106 [2020-09-25 02:19:22,710 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:19:22,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 02:19:22,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/376f0d990/ff3fd58915d545618b8158941763c8e2/FLAG6936b6106 [2020-09-25 02:19:23,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/376f0d990/ff3fd58915d545618b8158941763c8e2 [2020-09-25 02:19:23,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:19:23,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:19:23,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:23,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:19:23,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:19:23,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23, skipping insertion in model container [2020-09-25 02:19:23,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:19:23,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:19:23,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:23,392 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:19:23,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:23,558 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:19:23,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23 WrapperNode [2020-09-25 02:19:23,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:23,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:19:23,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:19:23,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:19:23,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (1/1) ... [2020-09-25 02:19:23,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:19:23,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:19:23,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:19:23,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:19:23,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (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 02:19:23,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:19:23,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:19:23,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:19:23,693 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 02:19:23,695 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 02:19:23,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:19:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:19:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:19:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 02:19:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 02:19:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 02:19:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 02:19:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 02:19:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 02:19:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 02:19:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 02:19:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 02:19:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 02:19:23,699 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 02:19:23,700 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 02:19:23,700 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 02:19:23,701 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 02:19:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 02:19:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 02:19:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 02:19:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 02:19:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 02:19:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 02:19:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 02:19:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 02:19:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 02:19:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 02:19:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 02:19:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 02:19:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:19:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:19:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:19:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:19:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:19:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:19:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:19:24,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:19:24,289 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 02:19:24,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:24 BoogieIcfgContainer [2020-09-25 02:19:24,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:19:24,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:19:24,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:19:24,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:19:24,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:23" (1/3) ... [2020-09-25 02:19:24,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783bfeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:24, skipping insertion in model container [2020-09-25 02:19:24,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:23" (2/3) ... [2020-09-25 02:19:24,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783bfeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:24, skipping insertion in model container [2020-09-25 02:19:24,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:24" (3/3) ... [2020-09-25 02:19:24,307 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 02:19:24,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:19:24,332 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:19:24,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:19:24,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:19:24,381 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:19:24,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:19:24,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:19:24,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:19:24,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:19:24,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:19:24,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:19:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 02:19:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:19:24,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:24,422 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 02:19:24,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:24,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 02:19:24,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:24,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705561280] [2020-09-25 02:19:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:25,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:25,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:26,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:26,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:19:26,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:19:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2320 [2020-09-25 02:19:26,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 02:19:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:19:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:27,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:27,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:27,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:19:27,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:27,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 02:19:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:27,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:27,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:27,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:19:27,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:19:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:27,057 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 02:19:27,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705561280] [2020-09-25 02:19:27,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:27,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:19:27,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033060549] [2020-09-25 02:19:27,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:19:27,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:27,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:19:27,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:19:27,110 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 02:19:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:27,387 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-09-25 02:19:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:19:27,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-25 02:19:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:27,405 INFO L225 Difference]: With dead ends: 227 [2020-09-25 02:19:27,405 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 02:19:27,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:19:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 02:19:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 02:19:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 02:19:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 02:19:27,480 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-09-25 02:19:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:27,480 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 02:19:27,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:19:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 02:19:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 02:19:27,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:27,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:27,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:19:27,485 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:27,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:27,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-09-25 02:19:27,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:27,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115151892] [2020-09-25 02:19:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:27,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:27,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:28,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:32,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 02:19:32,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:19:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:19:32,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:19:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 02:19:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:19:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:32,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:32,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:32,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:32,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:32,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:32,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:32,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:19:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:32,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:32,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:32,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:19:32,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:32,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:32,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:19:32,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:32,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:32,580 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 02:19:32,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115151892] [2020-09-25 02:19:32,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:32,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:19:32,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133174513] [2020-09-25 02:19:32,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:19:32,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:32,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:19:32,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:19:32,585 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-09-25 02:19:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:32,778 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-09-25 02:19:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:19:32,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 02:19:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:32,780 INFO L225 Difference]: With dead ends: 189 [2020-09-25 02:19:32,781 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 02:19:32,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:19:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 02:19:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-09-25 02:19:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 02:19:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-09-25 02:19:32,795 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-09-25 02:19:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:32,795 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-09-25 02:19:32,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:19:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-09-25 02:19:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 02:19:32,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:32,798 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 02:19:32,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:19:32,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:32,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:32,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-09-25 02:19:32,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:32,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900407557] [2020-09-25 02:19:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:35,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:35,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 02:19:35,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:19:35,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-09-25 02:19:35,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:19:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 02:19:35,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 02:19:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:35,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:35,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:35,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:19:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 02:19:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:35,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:35,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:35,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:35,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:19:35,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:19:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:35,124 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 02:19:35,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900407557] [2020-09-25 02:19:35,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:35,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:19:35,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162958197] [2020-09-25 02:19:35,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:19:35,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:35,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:19:35,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:19:35,127 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-09-25 02:19:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:35,784 INFO L93 Difference]: Finished difference Result 474 states and 535 transitions. [2020-09-25 02:19:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:19:35,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 02:19:35,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:35,792 INFO L225 Difference]: With dead ends: 474 [2020-09-25 02:19:35,793 INFO L226 Difference]: Without dead ends: 381 [2020-09-25 02:19:35,795 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 02:19:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-09-25 02:19:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 145. [2020-09-25 02:19:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-25 02:19:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2020-09-25 02:19:35,819 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 62 [2020-09-25 02:19:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:35,820 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2020-09-25 02:19:35,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:19:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2020-09-25 02:19:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 02:19:35,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:35,822 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 02:19:35,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:19:35,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:35,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:35,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-25 02:19:35,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:35,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678216181] [2020-09-25 02:19:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:36,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:38,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:40,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:19:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:19:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:19:40,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:19:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 02:19:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 02:19:40,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:40,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:40,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:40,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:40,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:40,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 02:19:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:40,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:41,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:41,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:19:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:19:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:41,010 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 02:19:41,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678216181] [2020-09-25 02:19:41,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:41,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 02:19:41,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336206544] [2020-09-25 02:19:41,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:19:41,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:19:41,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:19:41,013 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand 11 states. [2020-09-25 02:19:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:41,995 INFO L93 Difference]: Finished difference Result 484 states and 551 transitions. [2020-09-25 02:19:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 02:19:41,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-09-25 02:19:41,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:41,998 INFO L225 Difference]: With dead ends: 484 [2020-09-25 02:19:41,999 INFO L226 Difference]: Without dead ends: 355 [2020-09-25 02:19:42,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2020-09-25 02:19:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-09-25 02:19:42,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 145. [2020-09-25 02:19:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-25 02:19:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2020-09-25 02:19:42,037 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 65 [2020-09-25 02:19:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:42,038 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2020-09-25 02:19:42,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:19:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2020-09-25 02:19:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 02:19:42,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:42,043 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 02:19:42,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:19:42,043 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:42,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-25 02:19:42,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:42,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142149515] [2020-09-25 02:19:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:42,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:42,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:43,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:45,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:45,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:19:45,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 02:19:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3899 [2020-09-25 02:19:45,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:19:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 02:19:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:19:45,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 02:19:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:46,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:46,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:46,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:19:46,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:19:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:46,024 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 02:19:46,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142149515] [2020-09-25 02:19:46,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:46,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:19:46,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101766624] [2020-09-25 02:19:46,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:19:46,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:46,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:19:46,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:19:46,027 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 4 states. [2020-09-25 02:19:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:46,175 INFO L93 Difference]: Finished difference Result 276 states and 309 transitions. [2020-09-25 02:19:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:19:46,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-09-25 02:19:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:46,177 INFO L225 Difference]: With dead ends: 276 [2020-09-25 02:19:46,177 INFO L226 Difference]: Without dead ends: 146 [2020-09-25 02:19:46,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:19:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-25 02:19:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-25 02:19:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 02:19:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 161 transitions. [2020-09-25 02:19:46,186 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 161 transitions. Word has length 65 [2020-09-25 02:19:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:46,186 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 161 transitions. [2020-09-25 02:19:46,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:19:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 161 transitions. [2020-09-25 02:19:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 02:19:46,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:46,188 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 02:19:46,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:19:46,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:46,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:46,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1492389340, now seen corresponding path program 1 times [2020-09-25 02:19:46,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:46,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275199025] [2020-09-25 02:19:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:46,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:48,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:48,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 02:19:48,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:19:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2355 [2020-09-25 02:19:48,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:48,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:19:48,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:19:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:48,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:48,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:48,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:48,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:48,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:48,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:48,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:48,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 02:19:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:48,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:48,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:19:48,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:19:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:48,635 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 02:19:48,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275199025] [2020-09-25 02:19:48,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:48,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:19:48,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545025458] [2020-09-25 02:19:48,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:19:48,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:48,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:19:48,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:48,638 INFO L87 Difference]: Start difference. First operand 146 states and 161 transitions. Second operand 6 states. [2020-09-25 02:19:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:48,941 INFO L93 Difference]: Finished difference Result 364 states and 406 transitions. [2020-09-25 02:19:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:19:48,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 02:19:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:48,943 INFO L225 Difference]: With dead ends: 364 [2020-09-25 02:19:48,943 INFO L226 Difference]: Without dead ends: 228 [2020-09-25 02:19:48,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:19:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-09-25 02:19:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 154. [2020-09-25 02:19:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 02:19:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 170 transitions. [2020-09-25 02:19:48,955 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 170 transitions. Word has length 67 [2020-09-25 02:19:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:48,955 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 170 transitions. [2020-09-25 02:19:48,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:19:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 170 transitions. [2020-09-25 02:19:48,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 02:19:48,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:48,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:48,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:19:48,958 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:48,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:48,958 INFO L82 PathProgramCache]: Analyzing trace with hash -155830882, now seen corresponding path program 1 times [2020-09-25 02:19:48,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:48,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912623651] [2020-09-25 02:19:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:48,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:53,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:53,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 02:19:53,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:19:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:19:53,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:19:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 02:19:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 02:19:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:54,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:54,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:19:54,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 02:19:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:54,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:54,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:54,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:19:54,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:19:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:54,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:54,028 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 02:19:54,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912623651] [2020-09-25 02:19:54,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:54,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:19:54,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81123243] [2020-09-25 02:19:54,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:19:54,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:54,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:19:54,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:19:54,031 INFO L87 Difference]: Start difference. First operand 154 states and 170 transitions. Second operand 5 states. [2020-09-25 02:19:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:54,247 INFO L93 Difference]: Finished difference Result 300 states and 334 transitions. [2020-09-25 02:19:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:19:54,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-25 02:19:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:54,251 INFO L225 Difference]: With dead ends: 300 [2020-09-25 02:19:54,251 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 02:19:54,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 02:19:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 155. [2020-09-25 02:19:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 02:19:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 171 transitions. [2020-09-25 02:19:54,275 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 171 transitions. Word has length 71 [2020-09-25 02:19:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:54,275 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 171 transitions. [2020-09-25 02:19:54,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:19:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 171 transitions. [2020-09-25 02:19:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:19:54,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:54,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:54,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:19:54,282 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:54,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:54,282 INFO L82 PathProgramCache]: Analyzing trace with hash -272178825, now seen corresponding path program 1 times [2020-09-25 02:19:54,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:54,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881661445] [2020-09-25 02:19:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:54,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:55,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:59,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:19:59,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:19:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 02:19:59,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:19:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 02:19:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:19:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:59,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:59,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:19:59,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 02:19:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:59,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:59,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:19:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:19:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:59,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881661445] [2020-09-25 02:19:59,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:59,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:19:59,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784482232] [2020-09-25 02:19:59,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:19:59,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:59,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:19:59,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:19:59,362 INFO L87 Difference]: Start difference. First operand 155 states and 171 transitions. Second operand 4 states. [2020-09-25 02:19:59,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:59,569 INFO L93 Difference]: Finished difference Result 295 states and 327 transitions. [2020-09-25 02:19:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:19:59,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-09-25 02:19:59,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:59,571 INFO L225 Difference]: With dead ends: 295 [2020-09-25 02:19:59,571 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 02:19:59,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:19:59,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 02:19:59,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-25 02:19:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 02:19:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2020-09-25 02:19:59,577 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 72 [2020-09-25 02:19:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:59,578 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2020-09-25 02:19:59,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:19:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2020-09-25 02:19:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:19:59,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:59,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:59,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:19:59,580 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:59,580 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-09-25 02:19:59,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:59,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507488398] [2020-09-25 02:19:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:04,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:04,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:20:04,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 02:20:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:20:04,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:20:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 02:20:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:20:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:04,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:04,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:20:04,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:20:04,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 02:20:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:04,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:04,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:04,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:20:04,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:20:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:20:04,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507488398] [2020-09-25 02:20:04,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:04,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 02:20:04,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711310730] [2020-09-25 02:20:04,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:20:04,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:04,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:20:04,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:20:04,814 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand 12 states. [2020-09-25 02:20:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:05,914 INFO L93 Difference]: Finished difference Result 532 states and 590 transitions. [2020-09-25 02:20:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 02:20:05,915 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 02:20:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:05,918 INFO L225 Difference]: With dead ends: 532 [2020-09-25 02:20:05,919 INFO L226 Difference]: Without dead ends: 393 [2020-09-25 02:20:05,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2020-09-25 02:20:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-25 02:20:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 155. [2020-09-25 02:20:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 02:20:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2020-09-25 02:20:05,939 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 72 [2020-09-25 02:20:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:05,939 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2020-09-25 02:20:05,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:20:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2020-09-25 02:20:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 02:20:05,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:05,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:05,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:20:05,941 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:05,942 INFO L82 PathProgramCache]: Analyzing trace with hash 69190993, now seen corresponding path program 1 times [2020-09-25 02:20:05,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:05,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609981754] [2020-09-25 02:20:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:05,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:06,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:08,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:08,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 02:20:08,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:20:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2099 [2020-09-25 02:20:08,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:20:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 02:20:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 02:20:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:08,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:08,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:20:08,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:20:08,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 02:20:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:08,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:08,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:08,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:08,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:20:08,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:20:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:20:08,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 02:20:08,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609981754] [2020-09-25 02:20:08,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:08,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:20:08,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883748267] [2020-09-25 02:20:08,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:20:08,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:08,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:20:08,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:20:08,164 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 8 states. [2020-09-25 02:20:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:08,539 INFO L93 Difference]: Finished difference Result 288 states and 317 transitions. [2020-09-25 02:20:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:20:08,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-09-25 02:20:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:08,542 INFO L225 Difference]: With dead ends: 288 [2020-09-25 02:20:08,542 INFO L226 Difference]: Without dead ends: 286 [2020-09-25 02:20:08,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:20:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-25 02:20:08,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 243. [2020-09-25 02:20:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 02:20:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 268 transitions. [2020-09-25 02:20:08,553 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 268 transitions. Word has length 73 [2020-09-25 02:20:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:08,554 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 268 transitions. [2020-09-25 02:20:08,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:20:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 268 transitions. [2020-09-25 02:20:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 02:20:08,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:08,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:08,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:20:08,557 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:08,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1806467579, now seen corresponding path program 1 times [2020-09-25 02:20:08,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:08,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822625226] [2020-09-25 02:20:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:10,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 02:20:10,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:20:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1929 [2020-09-25 02:20:10,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:20:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 02:20:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:20:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:10,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:10,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:20:10,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:20:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:10,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 02:20:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:10,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:10,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:10,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:10,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:20:10,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:20:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:10,605 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 02:20:10,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822625226] [2020-09-25 02:20:10,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:10,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:20:10,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236418022] [2020-09-25 02:20:10,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:20:10,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:10,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:20:10,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:20:10,609 INFO L87 Difference]: Start difference. First operand 243 states and 268 transitions. Second operand 8 states. [2020-09-25 02:20:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:11,069 INFO L93 Difference]: Finished difference Result 526 states and 580 transitions. [2020-09-25 02:20:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:20:11,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-09-25 02:20:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:11,078 INFO L225 Difference]: With dead ends: 526 [2020-09-25 02:20:11,078 INFO L226 Difference]: Without dead ends: 335 [2020-09-25 02:20:11,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:20:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-25 02:20:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 252. [2020-09-25 02:20:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-25 02:20:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 277 transitions. [2020-09-25 02:20:11,093 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 277 transitions. Word has length 73 [2020-09-25 02:20:11,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:11,094 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 277 transitions. [2020-09-25 02:20:11,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:20:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 277 transitions. [2020-09-25 02:20:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 02:20:11,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:11,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:11,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:20:11,097 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:11,098 INFO L82 PathProgramCache]: Analyzing trace with hash -947337095, now seen corresponding path program 1 times [2020-09-25 02:20:11,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:11,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239982549] [2020-09-25 02:20:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:11,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:11,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking...