/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:39:31,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:39:31,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:39:31,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:39:31,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:39:31,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:39:31,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:39:31,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:39:31,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:39:31,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:39:31,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:39:31,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:39:31,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:39:31,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:39:31,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:39:31,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:39:31,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:39:31,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:39:31,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:39:31,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:39:31,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:39:31,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:39:31,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:39:31,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:39:31,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:39:31,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:39:31,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:39:31,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:39:31,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:39:31,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:39:31,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:39:31,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:39:31,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:39:31,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:39:31,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:39:31,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:39:31,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:39:31,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:39:31,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:39:31,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:39:31,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:39:31,790 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 10:39:31,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:39:31,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:39:31,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:39:31,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:39:31,842 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:39:31,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:39:31,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:39:31,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:39:31,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:39:31,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:39:31,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:39:31,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:39:31,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:39:31,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:39:31,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:39:31,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:39:31,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:39:31,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:39:31,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:39:31,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:39:31,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:39:31,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:39:31,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:39:31,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:39:31,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:39:31,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:39:31,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:39:31,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:39:31,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:39:31,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:39:32,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:39:32,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:39:32,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:39:32,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:39:32,302 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:39:32,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label05.c [2020-10-28 10:39:32,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21883eab3/8194cc1523784029821b76f5132d8573/FLAG65993471e [2020-10-28 10:39:33,491 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:39:33,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label05.c [2020-10-28 10:39:33,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21883eab3/8194cc1523784029821b76f5132d8573/FLAG65993471e [2020-10-28 10:39:33,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21883eab3/8194cc1523784029821b76f5132d8573 [2020-10-28 10:39:33,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:39:33,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:39:33,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:39:33,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:39:33,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:39:33,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:39:33" (1/1) ... [2020-10-28 10:39:33,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b9749e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:33, skipping insertion in model container [2020-10-28 10:39:33,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:39:33" (1/1) ... [2020-10-28 10:39:33,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:39:34,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:39:36,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:39:36,418 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:39:37,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:39:37,850 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:39:37,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37 WrapperNode [2020-10-28 10:39:37,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:39:37,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:39:37,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:39:37,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:39:37,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (1/1) ... [2020-10-28 10:39:37,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (1/1) ... [2020-10-28 10:39:38,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (1/1) ... [2020-10-28 10:39:38,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (1/1) ... [2020-10-28 10:39:38,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (1/1) ... [2020-10-28 10:39:38,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (1/1) ... [2020-10-28 10:39:38,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (1/1) ... [2020-10-28 10:39:38,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:39:38,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:39:38,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:39:38,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:39:38,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (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 10:39:38,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:39:38,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:39:38,735 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:39:38,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:39:38,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:39:38,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:39:38,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:39:38,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:39:38,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:39:38,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:39:38,738 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:39:38,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:39:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:39:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:39:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:39:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:39:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:39:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:39:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:39:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:39:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:39:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:39:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:39:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:39:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:39:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:39:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:39:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:39:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:39:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:39:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:39:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:39:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:39:48,808 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:39:48,809 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:39:48,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:39:48 BoogieIcfgContainer [2020-10-28 10:39:48,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:39:48,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:39:48,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:39:48,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:39:48,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:39:33" (1/3) ... [2020-10-28 10:39:48,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c76d890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:39:48, skipping insertion in model container [2020-10-28 10:39:48,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:39:37" (2/3) ... [2020-10-28 10:39:48,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c76d890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:39:48, skipping insertion in model container [2020-10-28 10:39:48,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:39:48" (3/3) ... [2020-10-28 10:39:48,826 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label05.c [2020-10-28 10:39:48,839 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:39:48,850 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:39:48,864 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:39:48,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:39:48,917 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:39:48,917 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:39:48,917 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:39:48,917 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:39:48,917 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:39:48,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:39:48,918 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:39:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:39:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1709 [2020-10-28 10:39:49,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:39:49,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:39:49,136 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:39:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:39:49,146 INFO L82 PathProgramCache]: Analyzing trace with hash -75663049, now seen corresponding path program 1 times [2020-10-28 10:39:49,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:39:49,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484771678] [2020-10-28 10:39:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:39:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:39:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:39:55,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:39:55,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1732 [2020-10-28 10:39:55,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:39:55,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 10:39:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:39:55,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:39:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:39:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:39:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1723 [2020-10-28 10:39:55,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:39:57,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:39:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:39:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:39:57,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:39:57,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:39:57,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:39:57,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 10:39:57,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:39:57,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:39:57,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:39:57,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:39:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:39:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:40:01,171 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 10:40:01,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484771678] [2020-10-28 10:40:01,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:40:01,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:40:01,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445677060] [2020-10-28 10:40:01,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:40:01,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:40:01,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:40:01,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:40:01,205 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-28 10:40:36,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:40:36,397 INFO L93 Difference]: Finished difference Result 8129 states and 15417 transitions. [2020-10-28 10:40:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:40:36,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1708 [2020-10-28 10:40:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:40:36,464 INFO L225 Difference]: With dead ends: 8129 [2020-10-28 10:40:36,464 INFO L226 Difference]: Without dead ends: 5835 [2020-10-28 10:40:36,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:40:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-28 10:40:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5802. [2020-10-28 10:40:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5802 states. [2020-10-28 10:40:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 9375 transitions. [2020-10-28 10:40:36,813 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 9375 transitions. Word has length 1708 [2020-10-28 10:40:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:40:36,818 INFO L481 AbstractCegarLoop]: Abstraction has 5802 states and 9375 transitions. [2020-10-28 10:40:36,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:40:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 9375 transitions. [2020-10-28 10:40:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2020-10-28 10:40:36,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:40:36,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:40:36,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:40:36,976 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:40:36,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:40:36,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1597515059, now seen corresponding path program 1 times [2020-10-28 10:40:36,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:40:36,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611308538] [2020-10-28 10:40:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:40:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:40:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:40:39,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:40:42,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:40:42,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1743 [2020-10-28 10:40:42,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:40:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5167 [2020-10-28 10:40:42,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:40:42,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:40:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:40:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:40:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:40:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:40:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:40:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:40:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:40:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:40:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:40:43,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:40:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 10:40:43,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:40:43,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:40:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:40:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:40:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:40:43,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:40:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:40:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:40:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:40:43,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:40:43,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:40:43,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:40:43,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:40:43,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:40:43,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:40:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:40:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:40:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:40:43,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:40:44,692 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 10:40:44,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611308538] [2020-10-28 10:40:44,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:40:44,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:40:44,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493273150] [2020-10-28 10:40:44,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:40:44,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:40:44,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:40:44,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:40:44,699 INFO L87 Difference]: Start difference. First operand 5802 states and 9375 transitions. Second operand 7 states. [2020-10-28 10:41:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:41:11,536 INFO L93 Difference]: Finished difference Result 17243 states and 28256 transitions. [2020-10-28 10:41:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:41:11,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1717 [2020-10-28 10:41:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:41:11,602 INFO L225 Difference]: With dead ends: 17243 [2020-10-28 10:41:11,602 INFO L226 Difference]: Without dead ends: 11447 [2020-10-28 10:41:11,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:41:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11447 states. [2020-10-28 10:41:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11447 to 11272. [2020-10-28 10:41:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11272 states. [2020-10-28 10:41:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11272 states to 11272 states and 16474 transitions. [2020-10-28 10:41:12,020 INFO L78 Accepts]: Start accepts. Automaton has 11272 states and 16474 transitions. Word has length 1717 [2020-10-28 10:41:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:41:12,021 INFO L481 AbstractCegarLoop]: Abstraction has 11272 states and 16474 transitions. [2020-10-28 10:41:12,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:41:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 11272 states and 16474 transitions. [2020-10-28 10:41:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2020-10-28 10:41:12,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:41:12,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:41:12,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:41:12,074 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:41:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:41:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2003892783, now seen corresponding path program 1 times [2020-10-28 10:41:12,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:41:12,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247387512] [2020-10-28 10:41:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:41:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:41:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:17,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:41:17,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1745 [2020-10-28 10:41:17,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:41:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 10:41:17,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:41:17,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:41:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:41:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:41:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:41:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:41:18,258 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:41:18,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:41:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:41:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:41:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:41:18,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:41:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:41:18,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:41:18,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:41:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:41:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:41:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:41:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:41:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:41:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:41:18,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:18,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:41:18,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:41:18,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:41:18,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:41:18,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:41:18,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:41:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:41:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:41:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:41:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:41:20,152 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 10:41:20,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247387512] [2020-10-28 10:41:20,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:41:20,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:41:20,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776852807] [2020-10-28 10:41:20,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:41:20,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:41:20,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:41:20,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:41:20,157 INFO L87 Difference]: Start difference. First operand 11272 states and 16474 transitions. Second operand 7 states. [2020-10-28 10:41:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:41:49,954 INFO L93 Difference]: Finished difference Result 26802 states and 39128 transitions. [2020-10-28 10:41:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:41:49,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1719 [2020-10-28 10:41:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:41:50,037 INFO L225 Difference]: With dead ends: 26802 [2020-10-28 10:41:50,037 INFO L226 Difference]: Without dead ends: 15536 [2020-10-28 10:41:50,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:41:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15536 states. [2020-10-28 10:41:50,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15536 to 15373. [2020-10-28 10:41:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15373 states. [2020-10-28 10:41:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 21671 transitions. [2020-10-28 10:41:50,510 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 21671 transitions. Word has length 1719 [2020-10-28 10:41:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:41:50,511 INFO L481 AbstractCegarLoop]: Abstraction has 15373 states and 21671 transitions. [2020-10-28 10:41:50,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:41:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 21671 transitions. [2020-10-28 10:41:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2020-10-28 10:41:50,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:41:50,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:41:50,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:41:50,587 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:41:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:41:50,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1441620424, now seen corresponding path program 1 times [2020-10-28 10:41:50,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:41:50,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835569590] [2020-10-28 10:41:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:41:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:41:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:56,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:41:56,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1756 [2020-10-28 10:41:56,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:41:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 10:41:56,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:41:56,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:41:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:41:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:41:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:41:56,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:41:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:41:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:41:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:56,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:41:56,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:41:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:41:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:41:56,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:41:56,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:41:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:41:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:41:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:41:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:41:56,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:41:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:41:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:41:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:41:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:41:56,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:41:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 10:41:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:41:56,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:41:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:41:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:41:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:41:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:41:58,194 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 10:41:58,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835569590] [2020-10-28 10:41:58,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:41:58,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:41:58,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864365073] [2020-10-28 10:41:58,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:41:58,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:41:58,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:41:58,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:41:58,199 INFO L87 Difference]: Start difference. First operand 15373 states and 21671 transitions. Second operand 7 states. [2020-10-28 10:42:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:42:28,268 INFO L93 Difference]: Finished difference Result 39104 states and 55343 transitions. [2020-10-28 10:42:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:42:28,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1730 [2020-10-28 10:42:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:42:28,369 INFO L225 Difference]: With dead ends: 39104 [2020-10-28 10:42:28,369 INFO L226 Difference]: Without dead ends: 23737 [2020-10-28 10:42:28,405 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 10:42:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23737 states. [2020-10-28 10:42:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23737 to 23078. [2020-10-28 10:42:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23078 states. [2020-10-28 10:42:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23078 states to 23078 states and 31475 transitions. [2020-10-28 10:42:29,064 INFO L78 Accepts]: Start accepts. Automaton has 23078 states and 31475 transitions. Word has length 1730 [2020-10-28 10:42:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:42:29,064 INFO L481 AbstractCegarLoop]: Abstraction has 23078 states and 31475 transitions. [2020-10-28 10:42:29,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:42:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 23078 states and 31475 transitions. [2020-10-28 10:42:29,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1746 [2020-10-28 10:42:29,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:42:29,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-28 10:42:29,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:42:29,165 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:42:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:42:29,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1191209971, now seen corresponding path program 1 times [2020-10-28 10:42:29,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:42:29,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211673548] [2020-10-28 10:42:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:42:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:31,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:34,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1771 [2020-10-28 10:42:34,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:42:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 10:42:34,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:34,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:42:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:42:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 10:42:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:42:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:42:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:34,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:34,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:42:34,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:42:34,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:42:34,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:34,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:42:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:42:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:42:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:42:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:42:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:42:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:42:34,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:42:34,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 10:42:34,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:42:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 10:42:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:42:34,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:42:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:42:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:42:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 10:42:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:42:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:42:36,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211673548] [2020-10-28 10:42:36,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:42:36,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:42:36,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878932188] [2020-10-28 10:42:36,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:42:36,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:42:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:42:36,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:42:36,369 INFO L87 Difference]: Start difference. First operand 23078 states and 31475 transitions. Second operand 7 states. [2020-10-28 10:43:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:43:06,073 INFO L93 Difference]: Finished difference Result 69446 states and 100705 transitions. [2020-10-28 10:43:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:43:06,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1745 [2020-10-28 10:43:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:43:06,238 INFO L225 Difference]: With dead ends: 69446 [2020-10-28 10:43:06,239 INFO L226 Difference]: Without dead ends: 46374 [2020-10-28 10:43:06,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:43:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46374 states. [2020-10-28 10:43:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46374 to 45799. [2020-10-28 10:43:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45799 states. [2020-10-28 10:43:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45799 states to 45799 states and 62206 transitions. [2020-10-28 10:43:07,767 INFO L78 Accepts]: Start accepts. Automaton has 45799 states and 62206 transitions. Word has length 1745 [2020-10-28 10:43:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:43:07,768 INFO L481 AbstractCegarLoop]: Abstraction has 45799 states and 62206 transitions. [2020-10-28 10:43:07,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:43:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 45799 states and 62206 transitions. [2020-10-28 10:43:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1836 [2020-10-28 10:43:07,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:43:07,963 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, 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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] [2020-10-28 10:43:07,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:43:07,963 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:43:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:43:07,965 INFO L82 PathProgramCache]: Analyzing trace with hash 172135994, now seen corresponding path program 1 times [2020-10-28 10:43:07,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:43:07,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986350474] [2020-10-28 10:43:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:43:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:43:08,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:43:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking...