/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/Problem13_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:41:28,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:41:28,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:41:28,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:41:28,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:41:28,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:41:28,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:41:28,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:41:28,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:41:28,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:41:28,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:41:28,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:41:28,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:41:28,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:41:28,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:41:28,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:41:28,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:41:28,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:41:28,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:41:28,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:41:28,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:41:28,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:41:28,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:41:28,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:41:28,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:41:28,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:41:28,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:41:28,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:41:28,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:41:28,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:41:28,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:41:28,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:41:28,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:41:28,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:41:28,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:41:28,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:41:28,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:41:28,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:41:28,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:41:28,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:41:28,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:41:28,831 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 12:41:28,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:41:28,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:41:28,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:41:28,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:41:28,872 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:41:28,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:41:28,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:41:28,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:41:28,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:41:28,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:41:28,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:41:28,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:41:28,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:41:28,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:41:28,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:41:28,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:41:28,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:41:28,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:41:28,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:41:28,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:41:28,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:41:28,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:41:28,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:41:28,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:41:28,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:41:28,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:41:28,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:41:28,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:41:28,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:41:28,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:41:29,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:41:29,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:41:29,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:41:29,403 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:41:29,404 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:41:29,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label48.c [2020-10-28 12:41:29,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1f5c5915/839a6a26c3e0415c947940eb7aabc5ce/FLAGe81c452bd [2020-10-28 12:41:30,658 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:41:30,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label48.c [2020-10-28 12:41:30,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1f5c5915/839a6a26c3e0415c947940eb7aabc5ce/FLAGe81c452bd [2020-10-28 12:41:31,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1f5c5915/839a6a26c3e0415c947940eb7aabc5ce [2020-10-28 12:41:31,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:41:31,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:41:31,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:41:31,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:41:31,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:41:31,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:41:31" (1/1) ... [2020-10-28 12:41:31,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d45e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:31, skipping insertion in model container [2020-10-28 12:41:31,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:41:31" (1/1) ... [2020-10-28 12:41:31,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:41:31,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:41:33,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:41:33,414 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:41:34,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:41:34,209 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:41:34,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34 WrapperNode [2020-10-28 12:41:34,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:41:34,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:41:34,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:41:34,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:41:34,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (1/1) ... [2020-10-28 12:41:34,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (1/1) ... [2020-10-28 12:41:34,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (1/1) ... [2020-10-28 12:41:34,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (1/1) ... [2020-10-28 12:41:34,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (1/1) ... [2020-10-28 12:41:34,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (1/1) ... [2020-10-28 12:41:34,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (1/1) ... [2020-10-28 12:41:34,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:41:34,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:41:34,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:41:34,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:41:34,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (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 12:41:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:41:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:41:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:41:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:41:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:41:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:41:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:41:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:41:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:41:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:41:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:41:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:41:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:41:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:41:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:41:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:41:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:41:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:41:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:41:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:41:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:41:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:41:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:41:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:41:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:41:45,397 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:41:45,398 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:41:45,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:41:45 BoogieIcfgContainer [2020-10-28 12:41:45,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:41:45,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:41:45,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:41:45,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:41:45,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:41:31" (1/3) ... [2020-10-28 12:41:45,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457555ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:41:45, skipping insertion in model container [2020-10-28 12:41:45,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:41:34" (2/3) ... [2020-10-28 12:41:45,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457555ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:41:45, skipping insertion in model container [2020-10-28 12:41:45,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:41:45" (3/3) ... [2020-10-28 12:41:45,418 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label48.c [2020-10-28 12:41:45,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:41:45,438 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:41:45,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:41:45,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:41:45,497 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:41:45,497 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:41:45,497 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:41:45,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:41:45,497 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:41:45,498 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:41:45,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:41:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:41:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 12:41:45,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:41:45,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:41:45,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:41:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:41:45,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1313769334, now seen corresponding path program 1 times [2020-10-28 12:41:45,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:41:45,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151766083] [2020-10-28 12:41:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:41:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:46,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:46,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 12:41:46,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-28 12:41:46,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:46,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:41:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:41:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 12:41:46,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:41:46,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:41:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:46,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:46,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:41:46,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:46,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:41:46,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:46,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:46,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:41:46,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:41:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:41:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:41:46,532 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 12:41:46,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151766083] [2020-10-28 12:41:46,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:41:46,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:41:46,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245657723] [2020-10-28 12:41:46,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:41:46,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:41:46,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:41:46,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:41:46,569 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:42:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:42:02,968 INFO L93 Difference]: Finished difference Result 3123 states and 5754 transitions. [2020-10-28 12:42:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:42:02,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-28 12:42:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:42:03,017 INFO L225 Difference]: With dead ends: 3123 [2020-10-28 12:42:03,018 INFO L226 Difference]: Without dead ends: 1936 [2020-10-28 12:42:03,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:42:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-28 12:42:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918. [2020-10-28 12:42:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-10-28 12:42:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions. [2020-10-28 12:42:03,262 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 13 [2020-10-28 12:42:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:42:03,263 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions. [2020-10-28 12:42:03,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:42:03,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions. [2020-10-28 12:42:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 12:42:03,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:42:03,270 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:42:03,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:42:03,272 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:42:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:42:03,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1026775888, now seen corresponding path program 1 times [2020-10-28 12:42:03,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:42:03,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730860998] [2020-10-28 12:42:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:42:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:04,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:04,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:42:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:42:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-10-28 12:42:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:04,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:42:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:42:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:42:04,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:42:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:42:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:05,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:05,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:42:05,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:05,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:42:05,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:05,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:42:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:42:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:42:05,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:42:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:42:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-28 12:42:05,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:05,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:42:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:42:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:42:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:42:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:42:05,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730860998] [2020-10-28 12:42:05,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:42:05,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:42:05,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623594182] [2020-10-28 12:42:05,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:42:05,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:42:05,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:42:05,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:42:05,626 INFO L87 Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 7 states. [2020-10-28 12:42:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:42:37,096 INFO L93 Difference]: Finished difference Result 5685 states and 8808 transitions. [2020-10-28 12:42:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:42:37,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-28 12:42:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:42:37,135 INFO L225 Difference]: With dead ends: 5685 [2020-10-28 12:42:37,135 INFO L226 Difference]: Without dead ends: 3773 [2020-10-28 12:42:37,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:42:37,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2020-10-28 12:42:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3661. [2020-10-28 12:42:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3661 states. [2020-10-28 12:42:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5428 transitions. [2020-10-28 12:42:37,291 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5428 transitions. Word has length 89 [2020-10-28 12:42:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:42:37,292 INFO L481 AbstractCegarLoop]: Abstraction has 3661 states and 5428 transitions. [2020-10-28 12:42:37,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:42:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5428 transitions. [2020-10-28 12:42:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 12:42:37,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:42:37,297 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:42:37,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:42:37,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:42:37,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:42:37,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1147311181, now seen corresponding path program 1 times [2020-10-28 12:42:37,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:42:37,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099057306] [2020-10-28 12:42:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:42:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:38,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:38,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:42:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:42:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-10-28 12:42:38,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:38,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:42:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:42:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:42:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:42:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:42:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:38,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:38,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:38,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:42:38,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:38,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:42:38,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:38,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:38,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:42:38,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:38,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:42:38,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:42:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:38,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:38,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:42:38,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:38,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 12:42:38,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:38,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:38,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:42:38,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:42:38,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:42:38,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:42:39,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099057306] [2020-10-28 12:42:39,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:42:39,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:42:39,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396048225] [2020-10-28 12:42:39,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:42:39,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:42:39,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:42:39,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:42:39,099 INFO L87 Difference]: Start difference. First operand 3661 states and 5428 transitions. Second operand 7 states. [2020-10-28 12:43:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:43:02,997 INFO L93 Difference]: Finished difference Result 11077 states and 16745 transitions. [2020-10-28 12:43:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:43:02,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-28 12:43:03,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:43:03,049 INFO L225 Difference]: With dead ends: 11077 [2020-10-28 12:43:03,050 INFO L226 Difference]: Without dead ends: 7422 [2020-10-28 12:43:03,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:43:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7422 states. [2020-10-28 12:43:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 7294. [2020-10-28 12:43:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7294 states. [2020-10-28 12:43:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 10190 transitions. [2020-10-28 12:43:03,336 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 10190 transitions. Word has length 103 [2020-10-28 12:43:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:43:03,337 INFO L481 AbstractCegarLoop]: Abstraction has 7294 states and 10190 transitions. [2020-10-28 12:43:03,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:43:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 10190 transitions. [2020-10-28 12:43:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 12:43:03,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:43:03,340 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:43:03,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:43:03,341 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:43:03,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:43:03,342 INFO L82 PathProgramCache]: Analyzing trace with hash -939171273, now seen corresponding path program 1 times [2020-10-28 12:43:03,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:43:03,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127887437] [2020-10-28 12:43:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:43:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:04,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:04,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:04,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 12:43:04,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:43:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1263 [2020-10-28 12:43:04,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:04,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:43:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:43:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:43:04,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:43:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:04,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:04,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:43:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:43:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:04,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:43:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:43:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:04,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:43:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:05,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:05,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:43:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 12:43:05,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:05,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:43:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:43:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:43:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:43:05,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127887437] [2020-10-28 12:43:05,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:43:05,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:43:05,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063998221] [2020-10-28 12:43:05,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:43:05,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:43:05,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:43:05,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:43:05,374 INFO L87 Difference]: Start difference. First operand 7294 states and 10190 transitions. Second operand 7 states. [2020-10-28 12:43:46,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:43:46,709 INFO L93 Difference]: Finished difference Result 21938 states and 32242 transitions. [2020-10-28 12:43:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:43:46,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-28 12:43:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:43:46,816 INFO L225 Difference]: With dead ends: 21938 [2020-10-28 12:43:46,816 INFO L226 Difference]: Without dead ends: 14650 [2020-10-28 12:43:46,843 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 12:43:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14650 states. [2020-10-28 12:43:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14650 to 14439. [2020-10-28 12:43:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14439 states. [2020-10-28 12:43:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14439 states to 14439 states and 20345 transitions. [2020-10-28 12:43:47,327 INFO L78 Accepts]: Start accepts. Automaton has 14439 states and 20345 transitions. Word has length 131 [2020-10-28 12:43:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:43:47,329 INFO L481 AbstractCegarLoop]: Abstraction has 14439 states and 20345 transitions. [2020-10-28 12:43:47,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:43:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14439 states and 20345 transitions. [2020-10-28 12:43:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 12:43:47,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:43:47,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 12:43:47,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:43:47,347 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:43:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:43:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1258131551, now seen corresponding path program 1 times [2020-10-28 12:43:47,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:43:47,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406901325] [2020-10-28 12:43:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:43:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:52,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:52,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 12:43:52,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:43:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 12:43:52,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:52,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:43:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:43:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:43:52,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:43:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:43:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:52,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:52,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:43:52,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:52,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:43:52,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:52,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:43:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:43:52,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:52,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:43:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:52,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:52,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:43:52,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 12:43:52,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:52,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:43:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:43:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 12:43:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:53,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:53,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:43:53,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:43:53,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:53,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:43:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 12:43:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:43:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 10 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:43:53,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406901325] [2020-10-28 12:43:53,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:43:53,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:43:53,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720748460] [2020-10-28 12:43:53,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:43:53,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:43:53,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:43:53,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:43:53,079 INFO L87 Difference]: Start difference. First operand 14439 states and 20345 transitions. Second operand 7 states. [2020-10-28 12:44:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:44:30,235 INFO L93 Difference]: Finished difference Result 41969 states and 62052 transitions. [2020-10-28 12:44:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:44:30,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-28 12:44:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:44:30,395 INFO L225 Difference]: With dead ends: 41969 [2020-10-28 12:44:30,395 INFO L226 Difference]: Without dead ends: 27536 [2020-10-28 12:44:30,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:44:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27536 states. [2020-10-28 12:44:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27536 to 27334. [2020-10-28 12:44:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27334 states. [2020-10-28 12:44:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27334 states to 27334 states and 37160 transitions. [2020-10-28 12:44:31,340 INFO L78 Accepts]: Start accepts. Automaton has 27334 states and 37160 transitions. Word has length 178 [2020-10-28 12:44:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:44:31,341 INFO L481 AbstractCegarLoop]: Abstraction has 27334 states and 37160 transitions. [2020-10-28 12:44:31,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:44:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 27334 states and 37160 transitions. [2020-10-28 12:44:31,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 12:44:31,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:44:31,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 12:44:31,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:44:31,348 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:44:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:44:31,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1147633702, now seen corresponding path program 1 times [2020-10-28 12:44:31,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:44:31,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603395298] [2020-10-28 12:44:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:44:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:31,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:31,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:36,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:36,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 12:44:36,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:44:36,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 12:44:36,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:36,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:44:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:44:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:44:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:44:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:36,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:36,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:44:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:44:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:36,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:44:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:44:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:36,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:44:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:36,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:36,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:44:36,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:36,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:44:36,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:36,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:44:36,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:36,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:44:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:37,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:37,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:44:37,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:37,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 12:44:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:37,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:44:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:44:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:44:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:44:37,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603395298] [2020-10-28 12:44:37,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:44:37,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:44:37,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899625450] [2020-10-28 12:44:37,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:44:37,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:44:37,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:44:37,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:44:37,328 INFO L87 Difference]: Start difference. First operand 27334 states and 37160 transitions. Second operand 7 states. [2020-10-28 12:44:43,457 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:45:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:45:12,783 INFO L93 Difference]: Finished difference Result 75631 states and 107158 transitions. [2020-10-28 12:45:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:45:12,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-28 12:45:12,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:45:13,046 INFO L225 Difference]: With dead ends: 75631 [2020-10-28 12:45:13,046 INFO L226 Difference]: Without dead ends: 49106 [2020-10-28 12:45:13,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:45:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49106 states. [2020-10-28 12:45:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49106 to 48932. [2020-10-28 12:45:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48932 states. [2020-10-28 12:45:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48932 states to 48932 states and 69374 transitions. [2020-10-28 12:45:15,088 INFO L78 Accepts]: Start accepts. Automaton has 48932 states and 69374 transitions. Word has length 213 [2020-10-28 12:45:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:45:15,090 INFO L481 AbstractCegarLoop]: Abstraction has 48932 states and 69374 transitions. [2020-10-28 12:45:15,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:45:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 48932 states and 69374 transitions. [2020-10-28 12:45:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-28 12:45:15,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:45:15,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:15,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:45:15,096 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:45:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:45:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1376784821, now seen corresponding path program 1 times [2020-10-28 12:45:15,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:45:15,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278424830] [2020-10-28 12:45:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:45:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:15,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:20,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:20,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-28 12:45:20,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:45:20,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 12:45:20,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:20,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:45:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:45:20,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:45:20,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:20,367 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:45:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:45:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:20,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:20,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:45:20,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:45:20,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:20,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:45:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:45:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:20,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:45:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:20,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:20,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:20,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:45:20,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:45:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-28 12:45:20,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:20,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:45:20,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:45:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:45:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 12:45:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:21,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:21,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:45:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:45:21,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:21,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:45:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 12:45:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:45:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 10 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:45:21,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278424830] [2020-10-28 12:45:21,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:45:21,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:45:21,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051374751] [2020-10-28 12:45:21,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:45:21,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:45:21,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:45:21,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:45:21,182 INFO L87 Difference]: Start difference. First operand 48932 states and 69374 transitions. Second operand 7 states. [2020-10-28 12:45:21,350 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 67