/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=SHALLOWEST --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 00:04:16,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:04:16,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:04:16,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:04:16,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:04:16,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:04:16,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:04:16,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:04:16,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:04:16,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:04:16,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:04:16,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:04:16,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:04:16,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:04:16,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:04:16,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:04:16,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:04:16,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:04:16,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:04:16,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:04:16,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:04:16,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:04:16,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:04:16,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:04:16,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:04:16,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:04:16,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:04:16,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:04:16,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:04:16,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:04:16,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:04:16,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:04:16,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:04:16,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:04:16,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:04:16,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:04:16,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:04:16,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:04:16,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:04:16,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:04:16,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:04:16,651 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 00:04:16,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:04:16,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:04:16,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:04:16,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:04:16,704 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:04:16,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:04:16,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:04:16,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:04:16,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:04:16,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:04:16,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:04:16,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:04:16,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:04:16,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:04:16,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:04:16,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:04:16,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:04:16,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:04:16,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:04:16,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:04:16,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:04:16,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:04:16,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:04:16,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:04:16,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:04:16,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:04:16,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:04:16,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:04:16,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:04:16,710 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:04:17,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:04:17,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:04:17,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:04:17,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:04:17,276 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:04:17,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 00:04:17,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0586e204d/c9e945eba55a4a5a81bc53ce34207b1c/FLAGca9b9b0a1 [2020-09-25 00:04:17,892 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:04:17,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 00:04:17,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0586e204d/c9e945eba55a4a5a81bc53ce34207b1c/FLAGca9b9b0a1 [2020-09-25 00:04:18,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0586e204d/c9e945eba55a4a5a81bc53ce34207b1c [2020-09-25 00:04:18,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:04:18,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:04:18,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:04:18,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:04:18,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:04:18,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d0024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18, skipping insertion in model container [2020-09-25 00:04:18,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:04:18,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:04:18,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:04:18,537 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:04:18,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:04:18,683 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:04:18,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18 WrapperNode [2020-09-25 00:04:18,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:04:18,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:04:18,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:04:18,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:04:18,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (1/1) ... [2020-09-25 00:04:18,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:04:18,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:04:18,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:04:18,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:04:18,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (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 00:04:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:04:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:04:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:04:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 00:04:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 00:04:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:04:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:04:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:04:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 00:04:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 00:04:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 00:04:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 00:04:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 00:04:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 00:04:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 00:04:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 00:04:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 00:04:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 00:04:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 00:04:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 00:04:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 00:04:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 00:04:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 00:04:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 00:04:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 00:04:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 00:04:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 00:04:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 00:04:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 00:04:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 00:04:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 00:04:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 00:04:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 00:04:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 00:04:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:04:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:04:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:04:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:04:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:04:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:04:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:04:19,323 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:04:19,323 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 00:04:19,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:19 BoogieIcfgContainer [2020-09-25 00:04:19,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:04:19,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:04:19,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:04:19,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:04:19,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:04:18" (1/3) ... [2020-09-25 00:04:19,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c218dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:19, skipping insertion in model container [2020-09-25 00:04:19,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:18" (2/3) ... [2020-09-25 00:04:19,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c218dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:19, skipping insertion in model container [2020-09-25 00:04:19,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:19" (3/3) ... [2020-09-25 00:04:19,339 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 00:04:19,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:04:19,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:04:19,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:04:19,416 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:04:19,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:04:19,417 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:04:19,417 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:04:19,417 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:04:19,417 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:04:19,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:04:19,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:04:19,443 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 00:04:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 00:04:19,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:19,454 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 00:04:19,454 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:19,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 00:04:19,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:19,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143447020] [2020-09-25 00:04:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:20,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:21,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:21,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:04:21,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:04:21,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2155 [2020-09-25 00:04:21,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:04:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:04:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 00:04:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 00:04:21,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:21,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:22,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:22,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:22,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:22,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:04:22,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:22,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 00:04:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:22,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:22,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:22,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:04:22,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:04:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:04:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:22,062 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 00:04:22,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143447020] [2020-09-25 00:04:22,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:22,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:04:22,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148214999] [2020-09-25 00:04:22,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:04:22,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:22,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:04:22,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:22,098 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 00:04:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:22,662 INFO L93 Difference]: Finished difference Result 325 states and 377 transitions. [2020-09-25 00:04:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:04:22,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-09-25 00:04:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:22,680 INFO L225 Difference]: With dead ends: 325 [2020-09-25 00:04:22,681 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 00:04:22,686 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 00:04:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 00:04:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2020-09-25 00:04:22,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 00:04:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2020-09-25 00:04:22,758 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 48 [2020-09-25 00:04:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:22,758 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2020-09-25 00:04:22,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:04:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2020-09-25 00:04:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 00:04:22,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:22,771 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 00:04:22,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:04:22,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash 279562443, now seen corresponding path program 1 times [2020-09-25 00:04:22,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:22,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546962068] [2020-09-25 00:04:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:22,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:27,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 00:04:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:04:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 00:04:27,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:04:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:04:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:04:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:27,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:27,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:27,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:27,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:04:27,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 00:04:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:27,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:27,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:27,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:27,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:04:27,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:27,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:27,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:27,921 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 00:04:27,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546962068] [2020-09-25 00:04:27,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:27,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:04:27,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975737918] [2020-09-25 00:04:27,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:04:27,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:27,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:04:27,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:27,926 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand 8 states. [2020-09-25 00:04:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:28,467 INFO L93 Difference]: Finished difference Result 397 states and 449 transitions. [2020-09-25 00:04:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:04:28,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 00:04:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:28,473 INFO L225 Difference]: With dead ends: 397 [2020-09-25 00:04:28,473 INFO L226 Difference]: Without dead ends: 298 [2020-09-25 00:04:28,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:04:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-25 00:04:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 196. [2020-09-25 00:04:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 00:04:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 223 transitions. [2020-09-25 00:04:28,493 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 223 transitions. Word has length 62 [2020-09-25 00:04:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:28,494 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 223 transitions. [2020-09-25 00:04:28,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:04:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 223 transitions. [2020-09-25 00:04:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:04:28,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:28,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:28,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:04:28,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:28,498 INFO L82 PathProgramCache]: Analyzing trace with hash -53936734, now seen corresponding path program 1 times [2020-09-25 00:04:28,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:28,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556906413] [2020-09-25 00:04:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:28,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:33,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 00:04:33,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:04:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 00:04:33,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:33,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:04:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:04:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:04:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:33,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:33,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:33,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:04:33,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:33,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 00:04:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:33,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:33,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:04:33,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 00:04:33,709 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 00:04:33,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556906413] [2020-09-25 00:04:33,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:33,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:04:33,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527255223] [2020-09-25 00:04:33,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:04:33,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:33,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:04:33,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:33,714 INFO L87 Difference]: Start difference. First operand 196 states and 223 transitions. Second operand 8 states. [2020-09-25 00:04:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:34,315 INFO L93 Difference]: Finished difference Result 354 states and 401 transitions. [2020-09-25 00:04:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:04:34,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 00:04:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:34,318 INFO L225 Difference]: With dead ends: 354 [2020-09-25 00:04:34,319 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 00:04:34,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:04:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 00:04:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 223. [2020-09-25 00:04:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-25 00:04:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 254 transitions. [2020-09-25 00:04:34,336 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 254 transitions. Word has length 63 [2020-09-25 00:04:34,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:34,336 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 254 transitions. [2020-09-25 00:04:34,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:04:34,337 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 254 transitions. [2020-09-25 00:04:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:04:34,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:34,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:34,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:04:34,340 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:34,340 INFO L82 PathProgramCache]: Analyzing trace with hash 322027262, now seen corresponding path program 1 times [2020-09-25 00:04:34,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:34,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808316312] [2020-09-25 00:04:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:35,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:39,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:39,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 00:04:39,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:04:39,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:04:39,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:04:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:04:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:04:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:39,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:39,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:39,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:39,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:39,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:04:39,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 00:04:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:39,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:39,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:39,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:39,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:04:39,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:39,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:39,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:39,455 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 00:04:39,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808316312] [2020-09-25 00:04:39,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:39,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:04:39,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226599739] [2020-09-25 00:04:39,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:04:39,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:39,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:04:39,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:39,460 INFO L87 Difference]: Start difference. First operand 223 states and 254 transitions. Second operand 8 states. [2020-09-25 00:04:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:39,844 INFO L93 Difference]: Finished difference Result 378 states and 431 transitions. [2020-09-25 00:04:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:04:39,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 00:04:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:39,847 INFO L225 Difference]: With dead ends: 378 [2020-09-25 00:04:39,847 INFO L226 Difference]: Without dead ends: 277 [2020-09-25 00:04:39,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:04:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-25 00:04:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 235. [2020-09-25 00:04:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-25 00:04:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 268 transitions. [2020-09-25 00:04:39,861 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 268 transitions. Word has length 63 [2020-09-25 00:04:39,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:39,861 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 268 transitions. [2020-09-25 00:04:39,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:04:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 268 transitions. [2020-09-25 00:04:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 00:04:39,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:39,864 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 00:04:39,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:04:39,864 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:39,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1860552927, now seen corresponding path program 1 times [2020-09-25 00:04:39,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:39,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202632104] [2020-09-25 00:04:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:39,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:40,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:44,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:44,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 00:04:44,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:04:44,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 00:04:44,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:04:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:04:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 00:04:44,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:44,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:44,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:44,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:44,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 00:04:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:44,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:44,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:44,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:04:44,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:44,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:44,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:44,985 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 00:04:44,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202632104] [2020-09-25 00:04:44,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:44,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:04:44,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672893623] [2020-09-25 00:04:44,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:04:44,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:44,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:04:44,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:44,989 INFO L87 Difference]: Start difference. First operand 235 states and 268 transitions. Second operand 8 states. [2020-09-25 00:04:45,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:45,454 INFO L93 Difference]: Finished difference Result 383 states and 434 transitions. [2020-09-25 00:04:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:04:45,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-25 00:04:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:45,457 INFO L225 Difference]: With dead ends: 383 [2020-09-25 00:04:45,458 INFO L226 Difference]: Without dead ends: 294 [2020-09-25 00:04:45,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:04:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-09-25 00:04:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 236. [2020-09-25 00:04:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-25 00:04:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 270 transitions. [2020-09-25 00:04:45,468 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 270 transitions. Word has length 65 [2020-09-25 00:04:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:45,469 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 270 transitions. [2020-09-25 00:04:45,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:04:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 270 transitions. [2020-09-25 00:04:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 00:04:45,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:45,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:45,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:04:45,471 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:45,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2088092010, now seen corresponding path program 1 times [2020-09-25 00:04:45,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:45,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155569766] [2020-09-25 00:04:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:48,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:48,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:50,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:50,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 00:04:50,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 00:04:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 00:04:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:04:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:04:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 00:04:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:50,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:50,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:50,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:50,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:04:50,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:50,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 00:04:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:50,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:04:50,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:50,649 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 00:04:50,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155569766] [2020-09-25 00:04:50,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:50,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 00:04:50,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143496363] [2020-09-25 00:04:50,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:04:50,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:50,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:04:50,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:04:50,654 INFO L87 Difference]: Start difference. First operand 236 states and 270 transitions. Second operand 10 states. [2020-09-25 00:04:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:51,235 INFO L93 Difference]: Finished difference Result 381 states and 431 transitions. [2020-09-25 00:04:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:04:51,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-09-25 00:04:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:51,238 INFO L225 Difference]: With dead ends: 381 [2020-09-25 00:04:51,238 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 00:04:51,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:04:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 00:04:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 236. [2020-09-25 00:04:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-25 00:04:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2020-09-25 00:04:51,249 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 66 [2020-09-25 00:04:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:51,249 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2020-09-25 00:04:51,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:04:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2020-09-25 00:04:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 00:04:51,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:51,251 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 00:04:51,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:04:51,251 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1954483592, now seen corresponding path program 1 times [2020-09-25 00:04:51,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:51,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12156479] [2020-09-25 00:04:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:51,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:51,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:56,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:56,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 00:04:56,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:04:56,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:04:56,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:04:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:04:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:04:56,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:56,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:56,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:56,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:04:56,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 00:04:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:04:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:56,440 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 00:04:56,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12156479] [2020-09-25 00:04:56,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:56,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 00:04:56,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089607804] [2020-09-25 00:04:56,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:04:56,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:56,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:04:56,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:04:56,442 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 12 states. [2020-09-25 00:04:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:57,490 INFO L93 Difference]: Finished difference Result 591 states and 677 transitions. [2020-09-25 00:04:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 00:04:57,490 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-09-25 00:04:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:57,494 INFO L225 Difference]: With dead ends: 591 [2020-09-25 00:04:57,494 INFO L226 Difference]: Without dead ends: 406 [2020-09-25 00:04:57,496 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 00:04:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-09-25 00:04:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 250. [2020-09-25 00:04:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-09-25 00:04:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 283 transitions. [2020-09-25 00:04:57,507 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 283 transitions. Word has length 67 [2020-09-25 00:04:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:57,507 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 283 transitions. [2020-09-25 00:04:57,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:04:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 283 transitions. [2020-09-25 00:04:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 00:04:57,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:57,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:57,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:04:57,509 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:57,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1668355643, now seen corresponding path program 1 times [2020-09-25 00:04:57,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:57,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111640250] [2020-09-25 00:04:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:57,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:57,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:57,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:02,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 00:05:02,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:05:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:05:02,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:05:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:05:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 00:05:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:02,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:02,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:05:02,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:02,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:05:02,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 00:05:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:02,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:02,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:05:02,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:05:02,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:05:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:02,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:02,604 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 00:05:02,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111640250] [2020-09-25 00:05:02,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:02,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:05:02,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397389203] [2020-09-25 00:05:02,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:05:02,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:02,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:05:02,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:05:02,607 INFO L87 Difference]: Start difference. First operand 250 states and 283 transitions. Second operand 8 states. [2020-09-25 00:05:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:02,998 INFO L93 Difference]: Finished difference Result 381 states and 427 transitions. [2020-09-25 00:05:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:05:02,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 00:05:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:03,001 INFO L225 Difference]: With dead ends: 381 [2020-09-25 00:05:03,002 INFO L226 Difference]: Without dead ends: 274 [2020-09-25 00:05:03,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:05:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-25 00:05:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 249. [2020-09-25 00:05:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 00:05:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 280 transitions. [2020-09-25 00:05:03,012 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 280 transitions. Word has length 69 [2020-09-25 00:05:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:03,012 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 280 transitions. [2020-09-25 00:05:03,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:05:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 280 transitions. [2020-09-25 00:05:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 00:05:03,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:03,014 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 00:05:03,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:05:03,014 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:03,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1978313944, now seen corresponding path program 1 times [2020-09-25 00:05:03,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:03,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760333510] [2020-09-25 00:05:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:03,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 00:05:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:05:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:05:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:05:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:05:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:05:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:08,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:08,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:08,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:05:08,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:05:08,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:05:08,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 00:05:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:08,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:08,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:05:08,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:05:08,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:05:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:08,219 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 00:05:08,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760333510] [2020-09-25 00:05:08,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:08,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 00:05:08,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615742760] [2020-09-25 00:05:08,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:05:08,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:05:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:05:08,236 INFO L87 Difference]: Start difference. First operand 249 states and 280 transitions. Second operand 11 states.