/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:34:09,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:34:09,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:34:09,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:34:09,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:34:09,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:34:09,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:34:09,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:34:09,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:34:09,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:34:09,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:34:09,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:34:09,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:34:09,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:34:09,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:34:09,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:34:09,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:34:09,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:34:09,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:34:09,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:34:09,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:34:09,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:34:09,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:34:09,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:34:09,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:34:09,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:34:09,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:34:09,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:34:09,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:34:09,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:34:09,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:34:09,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:34:09,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:34:09,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:34:09,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:34:09,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:34:09,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:34:09,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:34:09,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:34:09,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:34:09,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:34:09,845 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 12:34:09,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:34:09,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:34:09,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:34:09,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:34:09,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:34:09,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:34:09,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:34:09,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:34:09,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:34:09,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:34:09,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:34:09,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:34:09,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:34:09,917 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:34:09,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:34:09,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:34:09,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:34:09,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:34:09,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:34:09,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:34:09,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:34:09,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:34:09,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:34:09,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:34:09,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:34:09,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:34:09,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:34:09,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:34:09,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:34:09,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:34:10,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:34:10,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:34:10,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:34:10,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:34:10,480 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:34:10,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22.c [2020-10-28 12:34:10,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/877faa8ab/42e8074d6a1a4a35a487a0123a882707/FLAGc64db0ec9 [2020-10-28 12:34:11,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:34:11,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label22.c [2020-10-28 12:34:12,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/877faa8ab/42e8074d6a1a4a35a487a0123a882707/FLAGc64db0ec9 [2020-10-28 12:34:12,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/877faa8ab/42e8074d6a1a4a35a487a0123a882707 [2020-10-28 12:34:12,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:34:12,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:34:12,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:34:12,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:34:12,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:34:12,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:34:12" (1/1) ... [2020-10-28 12:34:12,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd9af01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:12, skipping insertion in model container [2020-10-28 12:34:12,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:34:12" (1/1) ... [2020-10-28 12:34:12,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:34:12,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:34:14,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:34:14,094 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:34:14,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:34:15,025 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:34:15,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15 WrapperNode [2020-10-28 12:34:15,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:34:15,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:34:15,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:34:15,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:34:15,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 12:34:15,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 12:34:15,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 12:34:15,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 12:34:15,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 12:34:15,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 12:34:15,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 12:34:15,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:34:15,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:34:15,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:34:15,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:34:15,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (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 12:34:15,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:34:15,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:34:15,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:34:15,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:34:15,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:34:15,837 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:34:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:34:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:34:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:34:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:34:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:34:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:34:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:34:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:34:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:34:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:34:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:34:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:34:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:34:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:34:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:34:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:34:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:34:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:34:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:34:27,047 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:34:27,047 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:34:27,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:34:27 BoogieIcfgContainer [2020-10-28 12:34:27,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:34:27,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:34:27,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:34:27,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:34:27,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:34:12" (1/3) ... [2020-10-28 12:34:27,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e62eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:34:27, skipping insertion in model container [2020-10-28 12:34:27,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (2/3) ... [2020-10-28 12:34:27,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e62eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:34:27, skipping insertion in model container [2020-10-28 12:34:27,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:34:27" (3/3) ... [2020-10-28 12:34:27,071 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label22.c [2020-10-28 12:34:27,086 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:34:27,094 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:34:27,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:34:27,153 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:34:27,153 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:34:27,154 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:34:27,154 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:34:27,154 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:34:27,154 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:34:27,154 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:34:27,155 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:34:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:34:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 12:34:27,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:34:27,210 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] [2020-10-28 12:34:27,211 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:34:27,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:34:27,220 INFO L82 PathProgramCache]: Analyzing trace with hash -313798414, now seen corresponding path program 1 times [2020-10-28 12:34:27,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:34:27,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983898224] [2020-10-28 12:34:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:34:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:27,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:28,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 12:34:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-28 12:34:28,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:28,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:34:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:34:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 12:34:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 12:34:28,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:28,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:28,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:28,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:34:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:28,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:34:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:28,518 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 12:34:28,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983898224] [2020-10-28 12:34:28,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:34:28,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:34:28,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354915130] [2020-10-28 12:34:28,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:34:28,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:28,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:34:28,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:34:28,554 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:34:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:34:49,409 INFO L93 Difference]: Finished difference Result 3209 states and 5919 transitions. [2020-10-28 12:34:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:34:49,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-28 12:34:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:34:49,484 INFO L225 Difference]: With dead ends: 3209 [2020-10-28 12:34:49,485 INFO L226 Difference]: Without dead ends: 2007 [2020-10-28 12:34:49,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:34:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-28 12:34:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1921. [2020-10-28 12:34:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2020-10-28 12:34:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3312 transitions. [2020-10-28 12:34:49,769 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3312 transitions. Word has length 39 [2020-10-28 12:34:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:34:49,770 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3312 transitions. [2020-10-28 12:34:49,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:34:49,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3312 transitions. [2020-10-28 12:34:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 12:34:49,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:34:49,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:49,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:34:49,777 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:34:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:34:49,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1381504845, now seen corresponding path program 1 times [2020-10-28 12:34:49,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:34:49,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090088707] [2020-10-28 12:34:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:34:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:52,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:34:52,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:34:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2198 [2020-10-28 12:34:52,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:52,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:52,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:34:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:34:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:34:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:34:52,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:52,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:52,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:52,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:34:52,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:52,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:34:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:34:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:34:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:52,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:52,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:34:52,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 12:34:52,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:52,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:34:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:34:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:34:52,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090088707] [2020-10-28 12:34:52,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:34:52,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:34:52,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368006074] [2020-10-28 12:34:52,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:34:52,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:52,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:34:52,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:34:52,563 INFO L87 Difference]: Start difference. First operand 1921 states and 3312 transitions. Second operand 7 states. [2020-10-28 12:35:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:16,332 INFO L93 Difference]: Finished difference Result 5775 states and 9992 transitions. [2020-10-28 12:35:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:35:16,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-28 12:35:16,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:16,375 INFO L225 Difference]: With dead ends: 5775 [2020-10-28 12:35:16,376 INFO L226 Difference]: Without dead ends: 3860 [2020-10-28 12:35:16,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:35:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2020-10-28 12:35:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3766. [2020-10-28 12:35:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-10-28 12:35:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5894 transitions. [2020-10-28 12:35:16,609 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5894 transitions. Word has length 108 [2020-10-28 12:35:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:16,612 INFO L481 AbstractCegarLoop]: Abstraction has 3766 states and 5894 transitions. [2020-10-28 12:35:16,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:35:16,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5894 transitions. [2020-10-28 12:35:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 12:35:16,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:16,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:16,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:35:16,626 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:16,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:16,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1402499153, now seen corresponding path program 1 times [2020-10-28 12:35:16,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:16,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802171918] [2020-10-28 12:35:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:17,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:17,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:35:17,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:35:17,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-28 12:35:17,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:17,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:35:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:35:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:35:17,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:17,927 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:35:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:35:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:17,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:17,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:35:17,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:35:17,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:17,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:35:17,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:35:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:18,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:18,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 12:35:18,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:18,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 12:35:18,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:18,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:18,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:35:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:35:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:35:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:35:18,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802171918] [2020-10-28 12:35:18,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:35:18,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:35:18,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622541401] [2020-10-28 12:35:18,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:35:18,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:35:18,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:35:18,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:35:18,488 INFO L87 Difference]: Start difference. First operand 3766 states and 5894 transitions. Second operand 7 states. [2020-10-28 12:35:18,637 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:35:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:49,625 INFO L93 Difference]: Finished difference Result 11268 states and 18113 transitions. [2020-10-28 12:35:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:35:49,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-28 12:35:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:49,690 INFO L225 Difference]: With dead ends: 11268 [2020-10-28 12:35:49,690 INFO L226 Difference]: Without dead ends: 7508 [2020-10-28 12:35:49,708 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 12:35:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7508 states. [2020-10-28 12:35:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7508 to 7284. [2020-10-28 12:35:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7284 states. [2020-10-28 12:35:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7284 states to 7284 states and 10591 transitions. [2020-10-28 12:35:50,026 INFO L78 Accepts]: Start accepts. Automaton has 7284 states and 10591 transitions. Word has length 110 [2020-10-28 12:35:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:50,029 INFO L481 AbstractCegarLoop]: Abstraction has 7284 states and 10591 transitions. [2020-10-28 12:35:50,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:35:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7284 states and 10591 transitions. [2020-10-28 12:35:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 12:35:50,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:50,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:50,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:35:50,038 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:50,043 INFO L82 PathProgramCache]: Analyzing trace with hash -787574929, now seen corresponding path program 1 times [2020-10-28 12:35:50,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:50,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53867363] [2020-10-28 12:35:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:51,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:35:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:35:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2187 [2020-10-28 12:35:52,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:52,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:35:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:35:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:35:52,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:52,512 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:35:52,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:35:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:52,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:52,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:35:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:35:52,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:52,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:35:52,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:35:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:35:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:52,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:35:52,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:52,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:35:52,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:52,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:35:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:35:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:35:52,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:35:52,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53867363] [2020-10-28 12:35:52,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:35:52,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:35:52,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672105173] [2020-10-28 12:35:52,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:35:52,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:35:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:35:52,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:35:52,969 INFO L87 Difference]: Start difference. First operand 7284 states and 10591 transitions. Second operand 7 states. [2020-10-28 12:35:53,136 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:36:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:36:21,228 INFO L93 Difference]: Finished difference Result 21661 states and 32536 transitions. [2020-10-28 12:36:21,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:36:21,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-28 12:36:21,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:36:21,322 INFO L225 Difference]: With dead ends: 21661 [2020-10-28 12:36:21,322 INFO L226 Difference]: Without dead ends: 14383 [2020-10-28 12:36:21,345 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 12:36:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14383 states. [2020-10-28 12:36:21,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14383 to 14263. [2020-10-28 12:36:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14263 states. [2020-10-28 12:36:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 20413 transitions. [2020-10-28 12:36:21,800 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 20413 transitions. Word has length 115 [2020-10-28 12:36:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:36:21,801 INFO L481 AbstractCegarLoop]: Abstraction has 14263 states and 20413 transitions. [2020-10-28 12:36:21,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:36:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 20413 transitions. [2020-10-28 12:36:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 12:36:21,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:36:21,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:21,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:36:21,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:36:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:36:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1402264939, now seen corresponding path program 1 times [2020-10-28 12:36:21,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:36:21,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108952121] [2020-10-28 12:36:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:36:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:22,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:22,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 12:36:22,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:36:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-28 12:36:22,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:22,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:36:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:36:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:36:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:36:22,954 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:36:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:36:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:22,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:22,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:36:22,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:36:22,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:22,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:36:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:36:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:36:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:36:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:36:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:23,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:23,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 12:36:23,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:23,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 12:36:23,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:23,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:36:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:36:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:36:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:36:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:36:23,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108952121] [2020-10-28 12:36:23,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:36:23,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:36:23,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182238028] [2020-10-28 12:36:23,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:36:23,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:36:23,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:36:23,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:36:23,335 INFO L87 Difference]: Start difference. First operand 14263 states and 20413 transitions. Second operand 8 states. [2020-10-28 12:36:57,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:36:57,033 INFO L93 Difference]: Finished difference Result 54701 states and 87176 transitions. [2020-10-28 12:36:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:36:57,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-28 12:36:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:36:57,225 INFO L225 Difference]: With dead ends: 54701 [2020-10-28 12:36:57,225 INFO L226 Difference]: Without dead ends: 40444 [2020-10-28 12:36:57,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:36:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40444 states. [2020-10-28 12:36:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40444 to 40264. [2020-10-28 12:36:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40264 states. [2020-10-28 12:36:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40264 states to 40264 states and 59090 transitions. [2020-10-28 12:36:58,745 INFO L78 Accepts]: Start accepts. Automaton has 40264 states and 59090 transitions. Word has length 121 [2020-10-28 12:36:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:36:58,747 INFO L481 AbstractCegarLoop]: Abstraction has 40264 states and 59090 transitions. [2020-10-28 12:36:58,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:36:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 40264 states and 59090 transitions. [2020-10-28 12:36:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 12:36:58,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:36:58,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:58,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:36:58,753 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:36:58,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:36:58,753 INFO L82 PathProgramCache]: Analyzing trace with hash -612388214, now seen corresponding path program 1 times [2020-10-28 12:36:58,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:36:58,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198719271] [2020-10-28 12:36:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:36:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:58,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:58,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:01,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:01,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 12:37:01,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:37:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2798 [2020-10-28 12:37:01,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:01,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:37:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:37:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:01,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:01,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:01,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:01,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:37:01,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:01,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:37:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:37:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:02,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:02,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:37:02,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:37:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-28 12:37:02,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:02,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:37:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:37:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:37:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:37:02,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198719271] [2020-10-28 12:37:02,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:37:02,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:37:02,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284369490] [2020-10-28 12:37:02,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:37:02,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:02,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:37:02,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:37:02,390 INFO L87 Difference]: Start difference. First operand 40264 states and 59090 transitions. Second operand 7 states. [2020-10-28 12:37:02,550 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:37:05,035 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:37:29,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:37:29,115 INFO L93 Difference]: Finished difference Result 72802 states and 110012 transitions. [2020-10-28 12:37:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:37:29,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-10-28 12:37:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:37:29,355 INFO L225 Difference]: With dead ends: 72802 [2020-10-28 12:37:29,356 INFO L226 Difference]: Without dead ends: 40740 [2020-10-28 12:37:29,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:37:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40740 states. [2020-10-28 12:37:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40740 to 40564. [2020-10-28 12:37:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40564 states. [2020-10-28 12:37:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40564 states to 40564 states and 59853 transitions. [2020-10-28 12:37:31,461 INFO L78 Accepts]: Start accepts. Automaton has 40564 states and 59853 transitions. Word has length 159 [2020-10-28 12:37:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:37:31,462 INFO L481 AbstractCegarLoop]: Abstraction has 40564 states and 59853 transitions. [2020-10-28 12:37:31,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:37:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 40564 states and 59853 transitions. [2020-10-28 12:37:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 12:37:31,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:31,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:31,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:37:31,470 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:31,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:31,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1907397277, now seen corresponding path program 1 times [2020-10-28 12:37:31,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:31,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788797570] [2020-10-28 12:37:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:32,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:32,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:35,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:35,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 12:37:35,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:37:35,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4449 [2020-10-28 12:37:35,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:35,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:37:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 12:37:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:36,182 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:37:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:36,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:36,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:36,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:36,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:37:36,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:36,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:37:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:37:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:37:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:36,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:37:36,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 12:37:36,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:36,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:37:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:36,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:37:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:36,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:36,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:37:36,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:37:36,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 12:37:36,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:36,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:37:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:37:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:37:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 119 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:37:36,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788797570] [2020-10-28 12:37:36,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:37:36,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:37:36,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621243800] [2020-10-28 12:37:36,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:37:36,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:37:36,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:37:36,903 INFO L87 Difference]: Start difference. First operand 40564 states and 59853 transitions. Second operand 6 states. [2020-10-28 12:37:38,221 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66