/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:17:50,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:17:50,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:17:50,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:17:50,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:17:50,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:17:50,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:17:50,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:17:50,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:17:50,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:17:50,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:17:50,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:17:50,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:17:50,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:17:50,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:17:50,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:17:50,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:17:50,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:17:50,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:17:50,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:17:50,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:17:50,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:17:50,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:17:50,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:17:50,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:17:50,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:17:50,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:17:50,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:17:50,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:17:50,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:17:50,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:17:50,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:17:50,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:17:50,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:17:50,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:17:50,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:17:50,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:17:50,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:17:50,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:17:50,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:17:50,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:17:51,004 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 [2020-10-29 07:17:51,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:17:51,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:17:51,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:17:51,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:17:51,061 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:17:51,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:17:51,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:17:51,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:17:51,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:17:51,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:17:51,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:17:51,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:17:51,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:17:51,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:17:51,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:17:51,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:17:51,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:17:51,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:17:51,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:17:51,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:17:51,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:17:51,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:17:51,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:17:51,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:17:51,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:17:51,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:17:51,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:17:51,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:17:51,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:17:51,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:17:51,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:17:51,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:17:51,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:17:51,544 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:17:51,544 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:17:51,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32.c [2020-10-29 07:17:51,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c66fbc3e/7c2af2ea5de047aeb040b87db699bfd6/FLAG8357274b4 [2020-10-29 07:17:52,718 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:17:52,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label32.c [2020-10-29 07:17:52,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c66fbc3e/7c2af2ea5de047aeb040b87db699bfd6/FLAG8357274b4 [2020-10-29 07:17:53,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c66fbc3e/7c2af2ea5de047aeb040b87db699bfd6 [2020-10-29 07:17:53,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:17:53,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:17:53,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:17:53,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:17:53,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:17:53,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:17:53" (1/1) ... [2020-10-29 07:17:53,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b98788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:53, skipping insertion in model container [2020-10-29 07:17:53,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:17:53" (1/1) ... [2020-10-29 07:17:53,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:17:53,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:17:55,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:17:55,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:17:56,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:17:56,095 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:17:56,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56 WrapperNode [2020-10-29 07:17:56,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:17:56,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:17:56,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:17:56,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:17:56,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (1/1) ... [2020-10-29 07:17:56,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (1/1) ... [2020-10-29 07:17:56,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (1/1) ... [2020-10-29 07:17:56,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (1/1) ... [2020-10-29 07:17:56,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (1/1) ... [2020-10-29 07:17:56,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (1/1) ... [2020-10-29 07:17:56,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (1/1) ... [2020-10-29 07:17:56,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:17:56,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:17:56,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:17:56,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:17:56,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (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 [2020-10-29 07:17:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:17:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:17:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:17:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:17:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:17:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:17:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:17:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:17:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:17:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:17:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:17:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:17:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:17:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:17:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:17:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:17:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:17:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:17:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:17:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:17:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:17:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:17:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:18:06,552 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:18:06,553 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:18:06,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:18:06 BoogieIcfgContainer [2020-10-29 07:18:06,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:18:06,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:18:06,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:18:06,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:18:06,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:17:53" (1/3) ... [2020-10-29 07:18:06,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18622ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:18:06, skipping insertion in model container [2020-10-29 07:18:06,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:17:56" (2/3) ... [2020-10-29 07:18:06,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18622ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:18:06, skipping insertion in model container [2020-10-29 07:18:06,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:18:06" (3/3) ... [2020-10-29 07:18:06,569 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label32.c [2020-10-29 07:18:06,585 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:18:06,592 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:18:06,610 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:18:06,654 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:18:06,654 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:18:06,654 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:18:06,654 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:18:06,654 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:18:06,655 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:18:06,655 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:18:06,655 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:18:06,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:18:06,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 07:18:06,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:06,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:18:06,708 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:06,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:06,718 INFO L82 PathProgramCache]: Analyzing trace with hash 146632850, now seen corresponding path program 1 times [2020-10-29 07:18:06,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:06,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128443032] [2020-10-29 07:18:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:07,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:07,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 07:18:07,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:07,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-29 07:18:07,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:07,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:18:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 07:18:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:18:07,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:07,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:07,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:18:07,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:07,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:18:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:18:07,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128443032] [2020-10-29 07:18:07,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:18:07,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:18:07,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781458083] [2020-10-29 07:18:07,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:18:07,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:18:07,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:18:07,840 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:18:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:27,090 INFO L93 Difference]: Finished difference Result 3123 states and 5754 transitions. [2020-10-29 07:18:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:18:27,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 07:18:27,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:27,138 INFO L225 Difference]: With dead ends: 3123 [2020-10-29 07:18:27,138 INFO L226 Difference]: Without dead ends: 1936 [2020-10-29 07:18:27,153 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 [2020-10-29 07:18:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-29 07:18:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918. [2020-10-29 07:18:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-10-29 07:18:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions. [2020-10-29 07:18:27,395 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 15 [2020-10-29 07:18:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:27,397 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions. [2020-10-29 07:18:27,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:18:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions. [2020-10-29 07:18:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 07:18:27,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:27,406 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:18:27,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:18:27,407 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:27,410 INFO L82 PathProgramCache]: Analyzing trace with hash -52101640, now seen corresponding path program 1 times [2020-10-29 07:18:27,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:27,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301184096] [2020-10-29 07:18:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:28,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:28,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 07:18:28,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-29 07:18:28,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:28,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:18:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:18:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:18:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:28,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:28,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:28,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:28,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:18:28,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:28,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:18:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:29,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:29,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:18:29,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-29 07:18:29,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:29,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:18:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:18:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:18:29,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301184096] [2020-10-29 07:18:29,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:18:29,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:18:29,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058966405] [2020-10-29 07:18:29,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:29,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:29,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:29,388 INFO L87 Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 7 states. [2020-10-29 07:18:57,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:57,488 INFO L93 Difference]: Finished difference Result 5685 states and 8808 transitions. [2020-10-29 07:18:57,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:18:57,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-29 07:18:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:57,525 INFO L225 Difference]: With dead ends: 5685 [2020-10-29 07:18:57,525 INFO L226 Difference]: Without dead ends: 3773 [2020-10-29 07:18:57,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:18:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2020-10-29 07:18:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3661. [2020-10-29 07:18:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3661 states. [2020-10-29 07:18:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5428 transitions. [2020-10-29 07:18:57,656 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5428 transitions. Word has length 91 [2020-10-29 07:18:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:57,657 INFO L481 AbstractCegarLoop]: Abstraction has 3661 states and 5428 transitions. [2020-10-29 07:18:57,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5428 transitions. [2020-10-29 07:18:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 07:18:57,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:57,665 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:18:57,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:18:57,666 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:57,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:57,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1332922779, now seen corresponding path program 1 times [2020-10-29 07:18:57,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:57,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960903445] [2020-10-29 07:18:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:57,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:58,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:58,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 07:18:58,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-29 07:18:58,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:58,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:18:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:18:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:18:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:59,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:59,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:59,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:18:59,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:59,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:18:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:59,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:59,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:18:59,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:59,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 07:18:59,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:59,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:18:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:18:59,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960903445] [2020-10-29 07:18:59,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:18:59,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:18:59,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313088242] [2020-10-29 07:18:59,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:59,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:59,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:59,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:59,486 INFO L87 Difference]: Start difference. First operand 3661 states and 5428 transitions. Second operand 7 states. [2020-10-29 07:19:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:21,343 INFO L93 Difference]: Finished difference Result 11036 states and 16634 transitions. [2020-10-29 07:19:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:19:21,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-29 07:19:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:21,395 INFO L225 Difference]: With dead ends: 11036 [2020-10-29 07:19:21,395 INFO L226 Difference]: Without dead ends: 7381 [2020-10-29 07:19:21,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:19:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7381 states. [2020-10-29 07:19:21,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7381 to 7287. [2020-10-29 07:19:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7287 states. [2020-10-29 07:19:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7287 states to 7287 states and 10218 transitions. [2020-10-29 07:19:21,664 INFO L78 Accepts]: Start accepts. Automaton has 7287 states and 10218 transitions. Word has length 105 [2020-10-29 07:19:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:21,670 INFO L481 AbstractCegarLoop]: Abstraction has 7287 states and 10218 transitions. [2020-10-29 07:19:21,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:21,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7287 states and 10218 transitions. [2020-10-29 07:19:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 07:19:21,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:21,679 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:19:21,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:19:21,680 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:21,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2093849022, now seen corresponding path program 1 times [2020-10-29 07:19:21,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:21,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970401965] [2020-10-29 07:19:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:22,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 07:19:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-10-29 07:19:22,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:22,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:19:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:19:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:19:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:22,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:22,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:22,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:22,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:22,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:19:22,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:22,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:19:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:22,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:22,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:22,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:22,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:19:22,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 07:19:22,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:22,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:19:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:19:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:19:23,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970401965] [2020-10-29 07:19:23,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:19:23,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:19:23,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625837126] [2020-10-29 07:19:23,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:23,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:23,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:23,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:23,153 INFO L87 Difference]: Start difference. First operand 7287 states and 10218 transitions. Second operand 7 states. [2020-10-29 07:19:55,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:55,159 INFO L93 Difference]: Finished difference Result 20850 states and 30154 transitions. [2020-10-29 07:19:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:19:55,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-29 07:19:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:55,265 INFO L225 Difference]: With dead ends: 20850 [2020-10-29 07:19:55,265 INFO L226 Difference]: Without dead ends: 13569 [2020-10-29 07:19:55,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:19:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13569 states. [2020-10-29 07:19:55,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13569 to 13346. [2020-10-29 07:19:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13346 states. [2020-10-29 07:19:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 17293 transitions. [2020-10-29 07:19:55,808 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 17293 transitions. Word has length 105 [2020-10-29 07:19:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:55,811 INFO L481 AbstractCegarLoop]: Abstraction has 13346 states and 17293 transitions. [2020-10-29 07:19:55,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 17293 transitions. [2020-10-29 07:19:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 07:19:55,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:55,825 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:19:55,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:19:55,825 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:55,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:55,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1295185262, now seen corresponding path program 1 times [2020-10-29 07:19:55,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:55,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997154537] [2020-10-29 07:19:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:55,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:59,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:59,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 07:19:59,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:19:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3482 [2020-10-29 07:19:59,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:59,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:19:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:19:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:19:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:59,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:59,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:59,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:59,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:19:59,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:59,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:19:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:19:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:59,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:59,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:59,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:19:59,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:59,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 07:19:59,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:59,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:19:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:19:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:19:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:59,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:59,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:59,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:19:59,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 07:19:59,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:59,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:19:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:20:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 07:20:00,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997154537] [2020-10-29 07:20:00,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:20:00,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:20:00,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049533370] [2020-10-29 07:20:00,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:20:00,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:20:00,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:20:00,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:20:00,031 INFO L87 Difference]: Start difference. First operand 13346 states and 17293 transitions. Second operand 5 states. [2020-10-29 07:20:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:20:30,066 INFO L93 Difference]: Finished difference Result 31791 states and 43429 transitions. [2020-10-29 07:20:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:20:30,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-29 07:20:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:20:30,153 INFO L225 Difference]: With dead ends: 31791 [2020-10-29 07:20:30,153 INFO L226 Difference]: Without dead ends: 19254 [2020-10-29 07:20:30,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:20:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19254 states. [2020-10-29 07:20:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19254 to 19218. [2020-10-29 07:20:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19218 states. [2020-10-29 07:20:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19218 states to 19218 states and 24501 transitions. [2020-10-29 07:20:30,757 INFO L78 Accepts]: Start accepts. Automaton has 19218 states and 24501 transitions. Word has length 185 [2020-10-29 07:20:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:20:30,759 INFO L481 AbstractCegarLoop]: Abstraction has 19218 states and 24501 transitions. [2020-10-29 07:20:30,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:20:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 19218 states and 24501 transitions. [2020-10-29 07:20:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 07:20:30,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:20:30,764 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:20:30,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:20:30,764 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:20:30,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:20:30,766 INFO L82 PathProgramCache]: Analyzing trace with hash 617909550, now seen corresponding path program 1 times [2020-10-29 07:20:30,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:20:30,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750144906] [2020-10-29 07:20:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:20:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:30,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:35,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 07:20:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:20:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4437 [2020-10-29 07:20:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:35,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:20:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:20:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:20:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:20:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:35,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:35,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:35,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:20:35,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:35,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:20:35,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:35,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:20:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:20:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:20:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:35,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:35,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:20:35,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 07:20:35,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:35,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:20:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:35,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:20:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:35,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:35,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:20:35,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:20:35,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:35,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:20:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:20:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:20:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:20:36,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750144906] [2020-10-29 07:20:36,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:20:36,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:20:36,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952008416] [2020-10-29 07:20:36,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:20:36,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:20:36,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:20:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:20:36,020 INFO L87 Difference]: Start difference. First operand 19218 states and 24501 transitions. Second operand 7 states. [2020-10-29 07:21:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:21:07,308 INFO L93 Difference]: Finished difference Result 51405 states and 69498 transitions. [2020-10-29 07:21:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:21:07,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-29 07:21:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:21:07,456 INFO L225 Difference]: With dead ends: 51405 [2020-10-29 07:21:07,456 INFO L226 Difference]: Without dead ends: 32996 [2020-10-29 07:21:07,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:21:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32996 states. [2020-10-29 07:21:08,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32996 to 32777. [2020-10-29 07:21:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32777 states. [2020-10-29 07:21:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32777 states to 32777 states and 44027 transitions. [2020-10-29 07:21:08,544 INFO L78 Accepts]: Start accepts. Automaton has 32777 states and 44027 transitions. Word has length 215 [2020-10-29 07:21:08,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:21:08,544 INFO L481 AbstractCegarLoop]: Abstraction has 32777 states and 44027 transitions. [2020-10-29 07:21:08,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:21:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 32777 states and 44027 transitions. [2020-10-29 07:21:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-29 07:21:08,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:21:08,550 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:21:08,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:21:08,550 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:21:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:21:08,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1763574389, now seen corresponding path program 1 times [2020-10-29 07:21:08,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:21:08,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934913938] [2020-10-29 07:21:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:21:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:10,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:10,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:21:10,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:21:10,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2197 [2020-10-29 07:21:10,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:10,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:21:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 07:21:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:21:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:21:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:21:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:10,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:10,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:21:10,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:21:10,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:10,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:21:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:21:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:21:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:21:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:11,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:11,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:21:11,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:11,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 07:21:11,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:11,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:11,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:21:11,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:11,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:21:11,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:21:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:21:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:11,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:11,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:21:11,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 07:21:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:11,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:21:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:21:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:21:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:21:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:21:11,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934913938] [2020-10-29 07:21:11,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:21:11,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:21:11,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896180068] [2020-10-29 07:21:11,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:21:11,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:21:11,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:21:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:21:11,663 INFO L87 Difference]: Start difference. First operand 32777 states and 44027 transitions. Second operand 7 states. [2020-10-29 07:21:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:21:45,455 INFO L93 Difference]: Finished difference Result 70720 states and 102905 transitions. [2020-10-29 07:21:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:21:45,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-29 07:21:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:21:45,655 INFO L225 Difference]: With dead ends: 70720 [2020-10-29 07:21:45,655 INFO L226 Difference]: Without dead ends: 49397 [2020-10-29 07:21:45,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:21:45,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49397 states. [2020-10-29 07:21:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49397 to 48429. [2020-10-29 07:21:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48429 states.