/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:15:36,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:15:36,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:15:36,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:15:36,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:15:36,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:15:36,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:15:36,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:15:36,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:15:36,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:15:36,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:15:36,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:15:36,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:15:36,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:15:36,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:15:36,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:15:36,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:15:36,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:15:36,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:15:36,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:15:36,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:15:36,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:15:36,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:15:36,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:15:36,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:15:36,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:15:36,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:15:36,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:15:36,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:15:36,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:15:36,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:15:36,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:15:36,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:15:36,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:15:36,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:15:36,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:15:36,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:15:36,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:15:36,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:15:36,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:15:36,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:15:36,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 01:15:37,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:15:37,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:15:37,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:15:37,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:15:37,026 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:15:37,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:15:37,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:15:37,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:15:37,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:15:37,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:15:37,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:15:37,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:15:37,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:15:37,029 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:15:37,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:15:37,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:15:37,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:15:37,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:15:37,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:15:37,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:15:37,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:15:37,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:15:37,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:15:37,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:15:37,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:15:37,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:15:37,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:15:37,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:15:37,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:15:37,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:15:37,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:15:37,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:15:37,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:15:37,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:15:37,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:15:37,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label11.c [2020-10-14 01:15:37,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0c68b9a8/b76eb7072c2e4db3a6bb1cf6eb9548cb/FLAG3151a4fa8 [2020-10-14 01:15:38,348 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:15:38,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label11.c [2020-10-14 01:15:38,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0c68b9a8/b76eb7072c2e4db3a6bb1cf6eb9548cb/FLAG3151a4fa8 [2020-10-14 01:15:38,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0c68b9a8/b76eb7072c2e4db3a6bb1cf6eb9548cb [2020-10-14 01:15:38,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:15:38,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:15:38,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:15:38,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:15:38,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:15:38,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:15:38" (1/1) ... [2020-10-14 01:15:38,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76095f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:38, skipping insertion in model container [2020-10-14 01:15:38,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:15:38" (1/1) ... [2020-10-14 01:15:38,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:15:39,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:15:41,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:15:41,736 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:15:42,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:15:42,935 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:15:42,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42 WrapperNode [2020-10-14 01:15:42,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:15:42,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:15:42,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:15:42,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:15:42,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (1/1) ... [2020-10-14 01:15:42,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (1/1) ... [2020-10-14 01:15:43,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (1/1) ... [2020-10-14 01:15:43,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (1/1) ... [2020-10-14 01:15:43,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (1/1) ... [2020-10-14 01:15:43,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (1/1) ... [2020-10-14 01:15:43,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (1/1) ... [2020-10-14 01:15:43,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:15:43,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:15:43,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:15:43,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:15:43,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:15:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:15:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:15:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:15:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:15:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:15:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:15:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:15:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 01:15:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 01:15:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 01:15:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:15:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:15:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:15:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:15:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:15:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:15:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 01:15:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 01:15:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 01:15:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:15:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:15:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:15:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:15:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:15:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:15:51,751 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:15:51,752 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:15:51,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:15:51 BoogieIcfgContainer [2020-10-14 01:15:51,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:15:51,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:15:51,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:15:51,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:15:51,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:15:38" (1/3) ... [2020-10-14 01:15:51,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7356d43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:15:51, skipping insertion in model container [2020-10-14 01:15:51,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:15:42" (2/3) ... [2020-10-14 01:15:51,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7356d43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:15:51, skipping insertion in model container [2020-10-14 01:15:51,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:15:51" (3/3) ... [2020-10-14 01:15:51,780 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label11.c [2020-10-14 01:15:51,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:15:51,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:15:51,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:15:51,849 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:15:51,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:15:51,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:15:51,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:15:51,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:15:51,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:15:51,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:15:51,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:15:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 01:15:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1669 [2020-10-14 01:15:52,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:15:52,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:15:52,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:15:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:15:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1186066567, now seen corresponding path program 1 times [2020-10-14 01:15:52,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:15:52,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805848180] [2020-10-14 01:15:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:15:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:15:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:58,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:15:58,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1690 [2020-10-14 01:15:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:15:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-14 01:15:58,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:15:58,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:15:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 01:15:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:15:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1684 [2020-10-14 01:15:58,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:15:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:15:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:15:59,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:59,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:15:59,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:15:59,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:15:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:15:59,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:15:59,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:15:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:15:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:15:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:15:59,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:16:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:16:02,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805848180] [2020-10-14 01:16:02,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:16:02,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:16:02,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611945220] [2020-10-14 01:16:02,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:16:02,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:16:02,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:16:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:16:02,479 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-14 01:16:27,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:16:27,738 INFO L93 Difference]: Finished difference Result 8124 states and 15411 transitions. [2020-10-14 01:16:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:16:27,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1668 [2020-10-14 01:16:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:16:27,809 INFO L225 Difference]: With dead ends: 8124 [2020-10-14 01:16:27,809 INFO L226 Difference]: Without dead ends: 5834 [2020-10-14 01:16:27,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:16:27,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2020-10-14 01:16:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801. [2020-10-14 01:16:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-14 01:16:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions. [2020-10-14 01:16:28,094 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1668 [2020-10-14 01:16:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:16:28,099 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions. [2020-10-14 01:16:28,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:16:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions. [2020-10-14 01:16:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1678 [2020-10-14 01:16:28,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:16:28,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:16:28,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:16:28,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:16:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:16:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1221106258, now seen corresponding path program 1 times [2020-10-14 01:16:28,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:16:28,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668694051] [2020-10-14 01:16:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:16:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:16:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:16:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:16:33,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:16:33,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1701 [2020-10-14 01:16:33,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:16:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 01:16:33,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:16:33,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:16:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:16:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:16:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:16:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:16:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:16:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:16:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:16:35,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:16:35,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:16:35,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:16:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:16:35,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:16:35,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:16:35,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:16:35,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:16:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:16:35,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 01:16:35,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:16:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:16:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:16:35,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:16:35,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:16:35,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:16:35,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:16:35,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:16:35,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:16:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:16:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:16:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:16:35,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:16:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:16:36,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668694051] [2020-10-14 01:16:36,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:16:36,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:16:36,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301262430] [2020-10-14 01:16:36,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:16:36,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:16:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:16:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:16:36,502 INFO L87 Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand 7 states. [2020-10-14 01:16:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:16:56,433 INFO L93 Difference]: Finished difference Result 17241 states and 28254 transitions. [2020-10-14 01:16:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:16:56,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1677 [2020-10-14 01:16:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:16:56,493 INFO L225 Difference]: With dead ends: 17241 [2020-10-14 01:16:56,494 INFO L226 Difference]: Without dead ends: 11446 [2020-10-14 01:16:56,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:16:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11446 states. [2020-10-14 01:16:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11446 to 11271. [2020-10-14 01:16:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11271 states. [2020-10-14 01:16:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11271 states to 11271 states and 16472 transitions. [2020-10-14 01:16:56,807 INFO L78 Accepts]: Start accepts. Automaton has 11271 states and 16472 transitions. Word has length 1677 [2020-10-14 01:16:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:16:56,807 INFO L479 AbstractCegarLoop]: Abstraction has 11271 states and 16472 transitions. [2020-10-14 01:16:56,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:16:56,808 INFO L276 IsEmpty]: Start isEmpty. Operand 11271 states and 16472 transitions. [2020-10-14 01:16:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1680 [2020-10-14 01:16:56,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:16:56,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:16:56,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:16:56,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:16:56,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:16:56,878 INFO L82 PathProgramCache]: Analyzing trace with hash 880972682, now seen corresponding path program 1 times [2020-10-14 01:16:56,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:16:56,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177712170] [2020-10-14 01:16:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:16:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:16:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:16:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:02,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:02,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1703 [2020-10-14 01:17:02,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:17:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5224 [2020-10-14 01:17:02,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:02,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:17:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:17:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:17:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:03,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:17:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:03,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:03,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:03,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:17:03,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:17:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:17:03,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:03,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:17:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:17:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:17:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:17:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:03,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:03,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 01:17:03,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:17:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 01:17:03,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:03,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:17:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:17:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:17:03,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:17:04,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177712170] [2020-10-14 01:17:04,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:17:04,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:17:04,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605058358] [2020-10-14 01:17:04,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:17:04,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:17:04,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:17:04,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:17:04,394 INFO L87 Difference]: Start difference. First operand 11271 states and 16472 transitions. Second operand 7 states. [2020-10-14 01:17:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:17:40,008 INFO L93 Difference]: Finished difference Result 44637 states and 69755 transitions. [2020-10-14 01:17:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:17:40,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1679 [2020-10-14 01:17:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:17:40,189 INFO L225 Difference]: With dead ends: 44637 [2020-10-14 01:17:40,189 INFO L226 Difference]: Without dead ends: 33372 [2020-10-14 01:17:40,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:17:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33372 states. [2020-10-14 01:17:41,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33372 to 33302. [2020-10-14 01:17:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33302 states. [2020-10-14 01:17:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33302 states to 33302 states and 45530 transitions. [2020-10-14 01:17:41,157 INFO L78 Accepts]: Start accepts. Automaton has 33302 states and 45530 transitions. Word has length 1679 [2020-10-14 01:17:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:17:41,157 INFO L479 AbstractCegarLoop]: Abstraction has 33302 states and 45530 transitions. [2020-10-14 01:17:41,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:17:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 33302 states and 45530 transitions. [2020-10-14 01:17:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2020-10-14 01:17:41,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:17:41,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:17:41,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:17:41,305 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:17:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:17:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash -439005222, now seen corresponding path program 1 times [2020-10-14 01:17:41,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:17:41,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928453151] [2020-10-14 01:17:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:17:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:42,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:44,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:46,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:46,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1714 [2020-10-14 01:17:46,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:17:46,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 01:17:46,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:46,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:17:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:17:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 01:17:46,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:17:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:47,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:47,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:17:47,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:17:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:17:47,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:47,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:17:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:17:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:17:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:47,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:17:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:47,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:47,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:17:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:17:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 01:17:47,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:47,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:17:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:17:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:17:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:17:48,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928453151] [2020-10-14 01:17:48,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:17:48,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:17:48,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024014197] [2020-10-14 01:17:48,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:17:48,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:17:48,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:17:48,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:17:48,431 INFO L87 Difference]: Start difference. First operand 33302 states and 45530 transitions. Second operand 7 states. [2020-10-14 01:18:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:18:15,178 INFO L93 Difference]: Finished difference Result 101444 states and 151160 transitions. [2020-10-14 01:18:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 01:18:15,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1690 [2020-10-14 01:18:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:18:15,488 INFO L225 Difference]: With dead ends: 101444 [2020-10-14 01:18:15,488 INFO L226 Difference]: Without dead ends: 68148 [2020-10-14 01:18:15,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:18:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68148 states. [2020-10-14 01:18:17,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68148 to 67598. [2020-10-14 01:18:17,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67598 states. [2020-10-14 01:18:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67598 states to 67598 states and 93541 transitions. [2020-10-14 01:18:17,412 INFO L78 Accepts]: Start accepts. Automaton has 67598 states and 93541 transitions. Word has length 1690 [2020-10-14 01:18:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:18:17,413 INFO L479 AbstractCegarLoop]: Abstraction has 67598 states and 93541 transitions. [2020-10-14 01:18:17,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:18:17,413 INFO L276 IsEmpty]: Start isEmpty. Operand 67598 states and 93541 transitions. [2020-10-14 01:18:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1796 [2020-10-14 01:18:19,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:18:19,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:18:19,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:18:19,950 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:18:19,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:18:19,952 INFO L82 PathProgramCache]: Analyzing trace with hash 387955029, now seen corresponding path program 1 times [2020-10-14 01:18:19,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:18:19,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914482103] [2020-10-14 01:18:19,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:18:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:25,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:25,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1819 [2020-10-14 01:18:25,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:18:25,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 01:18:25,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:25,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:25,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:18:25,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:18:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 01:18:25,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:18:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:18:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:25,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:25,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:18:25,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:18:25,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:25,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:18:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:18:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:18:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:18:25,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:18:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:25,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:25,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 01:18:25,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 01:18:25,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:25,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:18:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:18:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 01:18:25,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:18:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:18:27,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914482103] [2020-10-14 01:18:27,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:18:27,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:18:27,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93392846] [2020-10-14 01:18:27,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:18:27,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:18:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:18:27,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:18:27,038 INFO L87 Difference]: Start difference. First operand 67598 states and 93541 transitions. Second operand 8 states. [2020-10-14 01:19:05,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:19:05,880 INFO L93 Difference]: Finished difference Result 231921 states and 351719 transitions. [2020-10-14 01:19:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:19:05,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1795 [2020-10-14 01:19:05,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:19:06,517 INFO L225 Difference]: With dead ends: 231921 [2020-10-14 01:19:06,517 INFO L226 Difference]: Without dead ends: 164329 [2020-10-14 01:19:06,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:19:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164329 states. [2020-10-14 01:19:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164329 to 164212. [2020-10-14 01:19:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164212 states. [2020-10-14 01:19:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164212 states to 164212 states and 239028 transitions. [2020-10-14 01:19:10,885 INFO L78 Accepts]: Start accepts. Automaton has 164212 states and 239028 transitions. Word has length 1795 [2020-10-14 01:19:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:19:10,886 INFO L479 AbstractCegarLoop]: Abstraction has 164212 states and 239028 transitions. [2020-10-14 01:19:10,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:19:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 164212 states and 239028 transitions. [2020-10-14 01:19:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1816 [2020-10-14 01:19:11,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:19:11,492 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:19:11,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:19:11,493 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:19:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:19:11,494 INFO L82 PathProgramCache]: Analyzing trace with hash -851128491, now seen corresponding path program 1 times [2020-10-14 01:19:11,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:19:11,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881369597] [2020-10-14 01:19:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:19:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat