/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:42:06,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:42:06,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:42:06,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:42:06,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:42:06,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:42:06,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:42:06,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:42:06,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:42:06,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:42:06,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:42:06,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:42:06,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:42:06,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:42:06,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:42:06,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:42:06,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:42:06,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:42:06,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:42:06,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:42:06,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:42:06,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:42:06,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:42:06,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:42:06,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:42:06,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:42:06,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:42:06,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:42:06,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:42:06,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:42:06,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:42:06,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:42:06,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:42:06,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:42:06,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:42:06,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:42:06,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:42:06,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:42:06,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:42:06,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:42:06,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:42:06,821 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 [2020-10-28 10:42:06,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:42:06,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:42:06,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:42:06,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:42:06,882 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:42:06,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:42:06,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:42:06,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:42:06,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:42:06,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:42:06,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:42:06,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:42:06,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:42:06,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:42:06,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:42:06,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:42:06,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:42:06,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:42:06,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:42:06,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:42:06,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:42:06,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:42:06,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:42:06,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:42:06,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:42:06,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:42:06,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:42:06,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:42:06,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:42:06,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:42:07,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:42:07,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:42:07,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:42:07,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:42:07,425 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:42:07,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label15.c [2020-10-28 10:42:07,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae25908d/1eda84584b14425882d036a7f617ffe2/FLAG823e4aa6b [2020-10-28 10:42:08,812 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:42:08,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label15.c [2020-10-28 10:42:08,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae25908d/1eda84584b14425882d036a7f617ffe2/FLAG823e4aa6b [2020-10-28 10:42:09,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae25908d/1eda84584b14425882d036a7f617ffe2 [2020-10-28 10:42:09,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:42:09,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:42:09,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:42:09,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:42:09,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:42:09,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:42:09" (1/1) ... [2020-10-28 10:42:09,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1350694c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:09, skipping insertion in model container [2020-10-28 10:42:09,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:42:09" (1/1) ... [2020-10-28 10:42:09,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:42:09,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:42:11,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:42:11,591 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:42:12,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:42:12,943 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:42:12,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12 WrapperNode [2020-10-28 10:42:12,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:42:12,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:42:12,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:42:12,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:42:12,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (1/1) ... [2020-10-28 10:42:12,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (1/1) ... [2020-10-28 10:42:13,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (1/1) ... [2020-10-28 10:42:13,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (1/1) ... [2020-10-28 10:42:13,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (1/1) ... [2020-10-28 10:42:13,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (1/1) ... [2020-10-28 10:42:13,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (1/1) ... [2020-10-28 10:42:13,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:42:13,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:42:13,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:42:13,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:42:13,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (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 [2020-10-28 10:42:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:42:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:42:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:42:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:42:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:42:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:42:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:42:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:42:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:42:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:42:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:42:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:42:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:42:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:42:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:42:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:42:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:42:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:42:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:42:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:42:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:42:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:42:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:42:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:42:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:42:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:42:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:42:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:42:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:42:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:42:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:42:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:42:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:42:24,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:42:24,025 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:42:24,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:42:24 BoogieIcfgContainer [2020-10-28 10:42:24,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:42:24,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:42:24,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:42:24,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:42:24,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:42:09" (1/3) ... [2020-10-28 10:42:24,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a872266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:42:24, skipping insertion in model container [2020-10-28 10:42:24,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:12" (2/3) ... [2020-10-28 10:42:24,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a872266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:42:24, skipping insertion in model container [2020-10-28 10:42:24,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:42:24" (3/3) ... [2020-10-28 10:42:24,043 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label15.c [2020-10-28 10:42:24,057 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:42:24,064 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:42:24,079 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:42:24,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:42:24,121 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:42:24,121 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:42:24,121 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:42:24,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:42:24,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:42:24,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:42:24,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:42:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:42:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2020-10-28 10:42:24,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:42:24,325 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, 1, 1, 1] [2020-10-28 10:42:24,326 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:42:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:42:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash 60741265, now seen corresponding path program 1 times [2020-10-28 10:42:24,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:42:24,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213501354] [2020-10-28 10:42:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:42:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:26,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:30,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1695 [2020-10-28 10:42:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:42:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5184 [2020-10-28 10:42:30,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:30,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:30,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:42:30,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:42:30,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1686 [2020-10-28 10:42:30,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:42:33,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:42:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:33,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:33,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:42:33,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:42:33,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 10:42:33,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:33,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:42:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:42:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:42:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:42:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:42:36,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213501354] [2020-10-28 10:42:36,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:42:36,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:42:36,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522391555] [2020-10-28 10:42:36,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:42:36,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:42:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:42:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:42:36,380 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:43:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:43:00,972 INFO L93 Difference]: Finished difference Result 6316 states and 11857 transitions. [2020-10-28 10:43:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:43:00,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1671 [2020-10-28 10:43:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:43:01,043 INFO L225 Difference]: With dead ends: 6316 [2020-10-28 10:43:01,043 INFO L226 Difference]: Without dead ends: 4026 [2020-10-28 10:43:01,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:43:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-28 10:43:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997. [2020-10-28 10:43:01,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-28 10:43:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions. [2020-10-28 10:43:01,375 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1671 [2020-10-28 10:43:01,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:43:01,384 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions. [2020-10-28 10:43:01,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:43:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions. [2020-10-28 10:43:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1681 [2020-10-28 10:43:01,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:43:01,524 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, 1, 1, 1] [2020-10-28 10:43:01,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:43:01,525 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:43:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:43:01,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2085268757, now seen corresponding path program 1 times [2020-10-28 10:43:01,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:43:01,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706580439] [2020-10-28 10:43:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:43:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:04,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:06,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:06,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1706 [2020-10-28 10:43:06,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:43:06,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5164 [2020-10-28 10:43:06,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:06,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:43:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:43:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:43:06,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:43:08,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:43:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:08,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:08,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:43:08,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:43:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:43:08,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:08,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:43:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:43:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:43:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:43:08,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:43:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:08,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:08,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:43:08,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:43:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:43:08,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:08,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:43:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:43:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:43:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:43:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:43:09,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706580439] [2020-10-28 10:43:09,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:43:09,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:43:09,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832457867] [2020-10-28 10:43:09,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:43:09,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:43:09,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:43:09,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:43:09,694 INFO L87 Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 7 states. [2020-10-28 10:43:39,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:43:39,807 INFO L93 Difference]: Finished difference Result 11691 states and 18999 transitions. [2020-10-28 10:43:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:43:39,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1680 [2020-10-28 10:43:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:43:39,857 INFO L225 Difference]: With dead ends: 11691 [2020-10-28 10:43:39,858 INFO L226 Difference]: Without dead ends: 7700 [2020-10-28 10:43:39,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:43:39,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7700 states. [2020-10-28 10:43:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7700 to 7633. [2020-10-28 10:43:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7633 states. [2020-10-28 10:43:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 11193 transitions. [2020-10-28 10:43:40,157 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 11193 transitions. Word has length 1680 [2020-10-28 10:43:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:43:40,158 INFO L481 AbstractCegarLoop]: Abstraction has 7633 states and 11193 transitions. [2020-10-28 10:43:40,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:43:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 11193 transitions. [2020-10-28 10:43:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1683 [2020-10-28 10:43:40,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:43:40,214 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, 1, 1, 1] [2020-10-28 10:43:40,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:43:40,215 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:43:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:43:40,216 INFO L82 PathProgramCache]: Analyzing trace with hash -115426663, now seen corresponding path program 1 times [2020-10-28 10:43:40,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:43:40,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784781817] [2020-10-28 10:43:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:43:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:41,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:45,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:45,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1708 [2020-10-28 10:43:45,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:43:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-28 10:43:45,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:45,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:43:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:43:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:43:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:43:46,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:43:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:46,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:46,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:43:46,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:43:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:43:46,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:46,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:43:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:43:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:43:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:43:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:43:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:46,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:43:46,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:43:46,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:43:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:43:46,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:43:46,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:43:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:43:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:43:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:43:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:43:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:43:47,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784781817] [2020-10-28 10:43:47,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:43:47,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:43:47,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72144582] [2020-10-28 10:43:47,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:43:47,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:43:47,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:43:47,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:43:47,719 INFO L87 Difference]: Start difference. First operand 7633 states and 11193 transitions. Second operand 7 states. [2020-10-28 10:43:47,878 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-28 10:44:15,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:44:15,248 INFO L93 Difference]: Finished difference Result 17325 states and 24967 transitions. [2020-10-28 10:44:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:44:15,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1682 [2020-10-28 10:44:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:44:15,304 INFO L225 Difference]: With dead ends: 17325 [2020-10-28 10:44:15,304 INFO L226 Difference]: Without dead ends: 9698 [2020-10-28 10:44:15,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:44:15,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9698 states. [2020-10-28 10:44:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9698 to 9558. [2020-10-28 10:44:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9558 states. [2020-10-28 10:44:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9558 states to 9558 states and 13527 transitions. [2020-10-28 10:44:15,727 INFO L78 Accepts]: Start accepts. Automaton has 9558 states and 13527 transitions. Word has length 1682 [2020-10-28 10:44:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:44:15,727 INFO L481 AbstractCegarLoop]: Abstraction has 9558 states and 13527 transitions. [2020-10-28 10:44:15,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:44:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 9558 states and 13527 transitions. [2020-10-28 10:44:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1694 [2020-10-28 10:44:15,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:44:15,859 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, 1, 1, 1] [2020-10-28 10:44:15,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:44:15,859 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:44:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:44:15,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1014099728, now seen corresponding path program 1 times [2020-10-28 10:44:15,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:44:15,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691264070] [2020-10-28 10:44:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:44:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:16,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:21,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:44:21,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1719 [2020-10-28 10:44:21,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:44:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 10:44:21,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:44:21,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:44:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:44:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:44:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:44:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:44:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:44:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:44:21,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:44:21,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:44:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:44:21,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:44:21,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:44:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:44:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:44:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:44:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:44:21,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:44:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:21,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:21,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:44:21,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:44:21,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:44:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:44:21,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:44:21,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:44:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:44:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:44:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:44:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:44:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:44:23,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691264070] [2020-10-28 10:44:23,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:44:23,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:44:23,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8411461] [2020-10-28 10:44:23,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:44:23,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:44:23,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:44:23,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:44:23,034 INFO L87 Difference]: Start difference. First operand 9558 states and 13527 transitions. Second operand 7 states. [2020-10-28 10:44:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:44:57,796 INFO L93 Difference]: Finished difference Result 29160 states and 42548 transitions. [2020-10-28 10:44:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:44:57,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1693 [2020-10-28 10:44:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:44:57,880 INFO L225 Difference]: With dead ends: 29160 [2020-10-28 10:44:57,881 INFO L226 Difference]: Without dead ends: 19608 [2020-10-28 10:44:57,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:44:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19608 states. [2020-10-28 10:44:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19608 to 19197. [2020-10-28 10:44:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19197 states. [2020-10-28 10:44:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 25588 transitions. [2020-10-28 10:44:58,415 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 25588 transitions. Word has length 1693 [2020-10-28 10:44:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:44:58,416 INFO L481 AbstractCegarLoop]: Abstraction has 19197 states and 25588 transitions. [2020-10-28 10:44:58,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:44:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 25588 transitions. [2020-10-28 10:44:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-28 10:44:58,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:44:58,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:44:58,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:44:58,509 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:44:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:44:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1137484759, now seen corresponding path program 1 times [2020-10-28 10:44:58,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:44:58,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581401164] [2020-10-28 10:44:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:44:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:44:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:44:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:03,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:03,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1735 [2020-10-28 10:45:03,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:45:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 10:45:03,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:03,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:45:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:45:03,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 10:45:03,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:04,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:45:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:04,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:04,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:45:04,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:45:04,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:04,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:45:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:45:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:45:04,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 10:45:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:45:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:04,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:04,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:04,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:45:04,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:45:04,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 10:45:04,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:04,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:45:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:45:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 10:45:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:45:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:45:05,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581401164] [2020-10-28 10:45:05,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:45:05,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:45:05,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271366509] [2020-10-28 10:45:05,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:45:05,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:45:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:45:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:45:05,660 INFO L87 Difference]: Start difference. First operand 19197 states and 25588 transitions. Second operand 7 states. [2020-10-28 10:45:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:45:38,679 INFO L93 Difference]: Finished difference Result 58540 states and 83337 transitions. [2020-10-28 10:45:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:45:38,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1709 [2020-10-28 10:45:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:45:38,829 INFO L225 Difference]: With dead ends: 58540 [2020-10-28 10:45:38,830 INFO L226 Difference]: Without dead ends: 39349 [2020-10-28 10:45:38,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:45:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39349 states. [2020-10-28 10:45:39,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39349 to 38405. [2020-10-28 10:45:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38405 states. [2020-10-28 10:45:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38405 states to 38405 states and 50889 transitions. [2020-10-28 10:45:39,918 INFO L78 Accepts]: Start accepts. Automaton has 38405 states and 50889 transitions. Word has length 1709 [2020-10-28 10:45:39,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:45:39,919 INFO L481 AbstractCegarLoop]: Abstraction has 38405 states and 50889 transitions. [2020-10-28 10:45:39,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:45:39,919 INFO L276 IsEmpty]: Start isEmpty. Operand 38405 states and 50889 transitions. [2020-10-28 10:45:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1749 [2020-10-28 10:45:40,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:45:40,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:45:40,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:45:40,057 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:45:40,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:45:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1895518368, now seen corresponding path program 1 times [2020-10-28 10:45:40,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:45:40,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949229854] [2020-10-28 10:45:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:45:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:45,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:45,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1774 [2020-10-28 10:45:45,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:45:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 10:45:45,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:45,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:45:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:45:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 10:45:45,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:46,224 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:45:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:45:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:46,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:46,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:45:46,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:45:46,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:46,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:45:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:45:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:45:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:46,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:45:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:45:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:45:46,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:45:46,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:45:46,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:45:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 10:45:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:45:46,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:45:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:45:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:45:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 10:45:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:45:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:45:47,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949229854] [2020-10-28 10:45:47,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:45:47,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:45:47,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945972087] [2020-10-28 10:45:47,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:45:47,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:45:47,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:45:47,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:45:47,632 INFO L87 Difference]: Start difference. First operand 38405 states and 50889 transitions. Second operand 7 states.