/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:49:12,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:49:12,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:49:12,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:49:12,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:49:12,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:49:12,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:49:12,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:49:12,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:49:12,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:49:12,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:49:12,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:49:12,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:49:12,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:49:12,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:49:12,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:49:12,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:49:12,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:49:13,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:49:13,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:49:13,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:49:13,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:49:13,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:49:13,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:49:13,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:49:13,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:49:13,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:49:13,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:49:13,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:49:13,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:49:13,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:49:13,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:49:13,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:49:13,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:49:13,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:49:13,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:49:13,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:49:13,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:49:13,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:49:13,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:49:13,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:49:13,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:49:13,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:49:13,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:49:13,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:49:13,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:49:13,060 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:49:13,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:49:13,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:49:13,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:49:13,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:49:13,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:49:13,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:49:13,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:49:13,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:49:13,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:49:13,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:49:13,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:49:13,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:49:13,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:49:13,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:49:13,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:49:13,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:49:13,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:49:13,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:49:13,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:49:13,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:49:13,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:49:13,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:49:13,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:49:13,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:49:13,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:49:13,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:49:13,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:49:13,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:49:13,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:49:13,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:49:13,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label40.c [2020-10-28 10:49:13,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b6a41a2a/fd304cd1ee9f4a999bdce9d511c11279/FLAGa02c30b4e [2020-10-28 10:49:15,006 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:49:15,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label40.c [2020-10-28 10:49:15,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b6a41a2a/fd304cd1ee9f4a999bdce9d511c11279/FLAGa02c30b4e [2020-10-28 10:49:15,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b6a41a2a/fd304cd1ee9f4a999bdce9d511c11279 [2020-10-28 10:49:15,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:49:15,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:49:15,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:49:15,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:49:15,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:49:15,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:49:15" (1/1) ... [2020-10-28 10:49:15,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3f3b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:15, skipping insertion in model container [2020-10-28 10:49:15,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:49:15" (1/1) ... [2020-10-28 10:49:15,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:49:15,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:49:17,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:49:17,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:49:19,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:49:19,183 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:49:19,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19 WrapperNode [2020-10-28 10:49:19,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:49:19,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:49:19,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:49:19,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:49:19,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (1/1) ... [2020-10-28 10:49:19,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (1/1) ... [2020-10-28 10:49:19,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (1/1) ... [2020-10-28 10:49:19,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (1/1) ... [2020-10-28 10:49:19,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (1/1) ... [2020-10-28 10:49:19,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (1/1) ... [2020-10-28 10:49:19,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (1/1) ... [2020-10-28 10:49:19,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:49:19,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:49:19,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:49:19,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:49:19,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:49:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:49:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:49:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:49:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:49:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:49:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:49:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:49:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:49:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:49:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:49:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:49:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:49:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:49:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:49:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:49:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:49:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:49:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:49:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:49:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:49:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:49:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:49:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:49:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:49:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:49:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:49:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:49:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:49:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:49:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:49:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:49:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:49:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:49:29,999 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:49:30,000 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:49:30,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:49:30 BoogieIcfgContainer [2020-10-28 10:49:30,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:49:30,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:49:30,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:49:30,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:49:30,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:49:15" (1/3) ... [2020-10-28 10:49:30,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384d46d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:49:30, skipping insertion in model container [2020-10-28 10:49:30,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:19" (2/3) ... [2020-10-28 10:49:30,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384d46d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:49:30, skipping insertion in model container [2020-10-28 10:49:30,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:49:30" (3/3) ... [2020-10-28 10:49:30,019 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40.c [2020-10-28 10:49:30,032 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:49:30,039 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:49:30,054 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:49:30,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:49:30,106 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:49:30,106 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:49:30,107 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:49:30,107 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:49:30,107 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:49:30,107 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:49:30,107 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:49:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:49:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2020-10-28 10:49:30,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:49:30,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:49:30,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:49:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:49:30,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1875713063, now seen corresponding path program 1 times [2020-10-28 10:49:30,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:49:30,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194111948] [2020-10-28 10:49:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:49:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:49:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:36,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:36,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1696 [2020-10-28 10:49:36,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:49:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5317 [2020-10-28 10:49:36,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:36,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:49:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:49:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1687 [2020-10-28 10:49:36,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:49:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:49:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:49:39,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:39,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:39,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:49:39,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:49:39,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:49:39,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:39,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:49:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:49:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:49:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:49:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:49:42,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194111948] [2020-10-28 10:49:42,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:49:42,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:49:42,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913552147] [2020-10-28 10:49:42,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:49:42,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:49:42,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:49:42,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:49:42,359 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:50:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:50:05,356 INFO L93 Difference]: Finished difference Result 6316 states and 11857 transitions. [2020-10-28 10:50:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:50:05,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1672 [2020-10-28 10:50:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:50:05,411 INFO L225 Difference]: With dead ends: 6316 [2020-10-28 10:50:05,412 INFO L226 Difference]: Without dead ends: 4026 [2020-10-28 10:50:05,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:50:05,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-28 10:50:05,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997. [2020-10-28 10:50:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-28 10:50:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions. [2020-10-28 10:50:05,656 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1672 [2020-10-28 10:50:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:50:05,660 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions. [2020-10-28 10:50:05,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:50:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions. [2020-10-28 10:50:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2020-10-28 10:50:05,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:50:05,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:50:05,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:50:05,812 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:50:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:50:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash 211555875, now seen corresponding path program 1 times [2020-10-28 10:50:05,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:50:05,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112439577] [2020-10-28 10:50:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:50:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:11,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:11,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1707 [2020-10-28 10:50:11,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:50:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5231 [2020-10-28 10:50:11,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:11,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:50:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:50:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:50:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:50:13,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:50:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:13,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:13,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:50:13,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:50:13,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:13,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:50:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:50:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:50:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:50:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:50:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:13,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:13,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:50:13,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:50:13,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:13,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:50:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:50:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:50:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:50:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:50:14,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112439577] [2020-10-28 10:50:14,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:50:14,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:50:14,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864972046] [2020-10-28 10:50:14,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:50:14,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:50:14,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:50:14,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:50:14,246 INFO L87 Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 7 states. [2020-10-28 10:50:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:50:43,020 INFO L93 Difference]: Finished difference Result 11644 states and 18924 transitions. [2020-10-28 10:50:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:50:43,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1681 [2020-10-28 10:50:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:50:43,074 INFO L225 Difference]: With dead ends: 11644 [2020-10-28 10:50:43,074 INFO L226 Difference]: Without dead ends: 7653 [2020-10-28 10:50:43,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:50:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7653 states. [2020-10-28 10:50:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7653 to 7628. [2020-10-28 10:50:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7628 states. [2020-10-28 10:50:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7628 states to 7628 states and 11186 transitions. [2020-10-28 10:50:43,340 INFO L78 Accepts]: Start accepts. Automaton has 7628 states and 11186 transitions. Word has length 1681 [2020-10-28 10:50:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:50:43,341 INFO L481 AbstractCegarLoop]: Abstraction has 7628 states and 11186 transitions. [2020-10-28 10:50:43,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:50:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7628 states and 11186 transitions. [2020-10-28 10:50:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1684 [2020-10-28 10:50:43,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:50:43,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:50:43,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:50:43,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:50:43,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:50:43,390 INFO L82 PathProgramCache]: Analyzing trace with hash 709474591, now seen corresponding path program 1 times [2020-10-28 10:50:43,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:50:43,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838539007] [2020-10-28 10:50:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:50:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:44,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:49,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:49,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1709 [2020-10-28 10:50:49,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:50:49,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5242 [2020-10-28 10:50:49,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:49,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:49,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:50:49,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:50:49,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:50:49,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:50:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:50:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:49,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:50:49,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:50:49,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:49,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:50:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:50:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:50:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:50:49,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:50:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:50,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:50:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:50:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:50,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:50:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:50:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:50:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:50:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:50:51,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838539007] [2020-10-28 10:50:51,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:50:51,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:50:51,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729469068] [2020-10-28 10:50:51,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:50:51,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:50:51,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:50:51,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:50:51,379 INFO L87 Difference]: Start difference. First operand 7628 states and 11186 transitions. Second operand 8 states. [2020-10-28 10:51:34,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:51:34,095 INFO L93 Difference]: Finished difference Result 22837 states and 33245 transitions. [2020-10-28 10:51:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:51:34,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1683 [2020-10-28 10:51:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:51:34,168 INFO L225 Difference]: With dead ends: 22837 [2020-10-28 10:51:34,169 INFO L226 Difference]: Without dead ends: 15215 [2020-10-28 10:51:34,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 10:51:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-10-28 10:51:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15043. [2020-10-28 10:51:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15043 states. [2020-10-28 10:51:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15043 states to 15043 states and 20259 transitions. [2020-10-28 10:51:34,651 INFO L78 Accepts]: Start accepts. Automaton has 15043 states and 20259 transitions. Word has length 1683 [2020-10-28 10:51:34,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:51:34,652 INFO L481 AbstractCegarLoop]: Abstraction has 15043 states and 20259 transitions. [2020-10-28 10:51:34,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:51:34,652 INFO L276 IsEmpty]: Start isEmpty. Operand 15043 states and 20259 transitions. [2020-10-28 10:51:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1695 [2020-10-28 10:51:34,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:51:34,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:51:34,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:51:34,731 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:51:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:51:34,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1379586648, now seen corresponding path program 1 times [2020-10-28 10:51:34,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:51:34,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127726219] [2020-10-28 10:51:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:51:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:40,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:40,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-28 10:51:40,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:51:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-28 10:51:40,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:40,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:51:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:51:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:51:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:51:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:51:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:40,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:40,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:51:40,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:51:40,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:51:40,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:40,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:51:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:51:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:51:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:51:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:51:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:40,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:40,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:51:40,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:51:40,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 10:51:40,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:40,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:51:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:51:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:51:40,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:51:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:51:42,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127726219] [2020-10-28 10:51:42,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:51:42,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:51:42,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169332547] [2020-10-28 10:51:42,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:51:42,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:51:42,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:51:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:51:42,190 INFO L87 Difference]: Start difference. First operand 15043 states and 20259 transitions. Second operand 7 states. [2020-10-28 10:52:13,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:52:13,622 INFO L93 Difference]: Finished difference Result 45094 states and 62194 transitions. [2020-10-28 10:52:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:52:13,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1694 [2020-10-28 10:52:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:52:13,726 INFO L225 Difference]: With dead ends: 45094 [2020-10-28 10:52:13,726 INFO L226 Difference]: Without dead ends: 30057 [2020-10-28 10:52:13,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:52:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30057 states. [2020-10-28 10:52:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30057 to 29904. [2020-10-28 10:52:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29904 states. [2020-10-28 10:52:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29904 states to 29904 states and 36812 transitions. [2020-10-28 10:52:14,481 INFO L78 Accepts]: Start accepts. Automaton has 29904 states and 36812 transitions. Word has length 1694 [2020-10-28 10:52:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:52:14,482 INFO L481 AbstractCegarLoop]: Abstraction has 29904 states and 36812 transitions. [2020-10-28 10:52:14,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:52:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29904 states and 36812 transitions. [2020-10-28 10:52:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1808 [2020-10-28 10:52:14,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:52:14,600 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:52:14,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:52:14,601 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:52:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:52:14,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1523956462, now seen corresponding path program 1 times [2020-10-28 10:52:14,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:52:14,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588365050] [2020-10-28 10:52:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:52:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:16,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:20,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:20,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1835 [2020-10-28 10:52:20,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:52:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5425 [2020-10-28 10:52:20,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:20,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:52:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-28 10:52:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:52:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:52:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:20,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:52:20,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:52:20,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:20,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:52:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:52:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:52:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:52:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:21,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:21,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:21,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:52:21,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:21,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 10:52:21,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:21,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:52:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:52:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:52:21,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 10:52:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:21,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:21,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:52:21,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:21,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 10:52:21,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:21,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:52:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:52:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:52:21,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:52:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:52:22,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588365050] [2020-10-28 10:52:22,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:52:22,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:52:22,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066167181] [2020-10-28 10:52:22,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:52:22,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:52:22,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:52:22,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:52:22,782 INFO L87 Difference]: Start difference. First operand 29904 states and 36812 transitions. Second operand 8 states. [2020-10-28 10:52:25,732 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 82