/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/Problem19_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:44:35,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:44:35,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:44:35,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:44:35,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:44:35,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:44:35,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:44:35,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:44:35,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:44:35,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:44:35,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:44:35,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:44:35,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:44:35,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:44:36,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:44:36,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:44:36,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:44:36,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:44:36,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:44:36,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:44:36,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:44:36,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:44:36,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:44:36,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:44:36,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:44:36,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:44:36,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:44:36,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:44:36,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:44:36,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:44:36,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:44:36,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:44:36,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:44:36,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:44:36,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:44:36,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:44:36,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:44:36,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:44:36,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:44:36,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:44:36,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:44:36,079 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 08:44:36,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:44:36,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:44:36,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:44:36,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:44:36,142 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:44:36,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:44:36,142 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:44:36,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:44:36,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:44:36,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:44:36,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:44:36,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:44:36,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:44:36,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:44:36,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:44:36,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:44:36,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:44:36,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:44:36,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:44:36,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:44:36,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:44:36,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:44:36,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:44:36,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:44:36,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:44:36,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:44:36,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:44:36,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:44:36,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:44:36,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:44:36,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:44:36,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:44:36,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:44:36,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:44:36,666 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:44:36,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label09.c [2020-10-29 08:44:36,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/894715f75/dd47f4286ee7401ab1b7e208f6ff8907/FLAGd662f140f [2020-10-29 08:44:38,034 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:44:38,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label09.c [2020-10-29 08:44:38,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/894715f75/dd47f4286ee7401ab1b7e208f6ff8907/FLAGd662f140f [2020-10-29 08:44:38,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/894715f75/dd47f4286ee7401ab1b7e208f6ff8907 [2020-10-29 08:44:38,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:44:38,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:44:38,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:44:38,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:44:38,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:44:38,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:44:38" (1/1) ... [2020-10-29 08:44:38,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1124215d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:38, skipping insertion in model container [2020-10-29 08:44:38,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:44:38" (1/1) ... [2020-10-29 08:44:38,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:44:38,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:44:40,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:44:41,026 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:44:42,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:44:42,464 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:44:42,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42 WrapperNode [2020-10-29 08:44:42,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:44:42,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:44:42,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:44:42,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:44:42,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (1/1) ... [2020-10-29 08:44:42,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (1/1) ... [2020-10-29 08:44:42,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (1/1) ... [2020-10-29 08:44:42,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (1/1) ... [2020-10-29 08:44:42,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (1/1) ... [2020-10-29 08:44:42,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (1/1) ... [2020-10-29 08:44:43,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (1/1) ... [2020-10-29 08:44:43,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:44:43,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:44:43,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:44:43,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:44:43,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (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 08:44:43,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:44:43,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:44:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:44:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:44:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:44:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:44:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:44:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:44:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:44:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:44:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:44:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:44:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:44:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:44:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:44:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:44:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:44:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:44:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:44:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:44:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:44:43,243 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:44:43,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:44:43,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:44:43,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:44:43,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:44:43,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:44:43,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:44:43,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:44:57,365 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:44:57,365 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:44:57,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:44:57 BoogieIcfgContainer [2020-10-29 08:44:57,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:44:57,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:44:57,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:44:57,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:44:57,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:44:38" (1/3) ... [2020-10-29 08:44:57,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2103f8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:44:57, skipping insertion in model container [2020-10-29 08:44:57,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:42" (2/3) ... [2020-10-29 08:44:57,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2103f8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:44:57, skipping insertion in model container [2020-10-29 08:44:57,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:44:57" (3/3) ... [2020-10-29 08:44:57,380 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label09.c [2020-10-29 08:44:57,392 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:44:57,399 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:44:57,414 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:44:57,453 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:44:57,453 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:44:57,453 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:44:57,453 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:44:57,454 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:44:57,454 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:44:57,454 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:44:57,454 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:44:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:44:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 08:44:57,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:44:57,512 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] [2020-10-29 08:44:57,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:44:57,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:44:57,520 INFO L82 PathProgramCache]: Analyzing trace with hash 759272085, now seen corresponding path program 1 times [2020-10-29 08:44:57,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:44:57,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898551319] [2020-10-29 08:44:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:44:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:58,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 08:44:58,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-29 08:44:58,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:58,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:44:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:44:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 08:44:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:44:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:44:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:58,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:58,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:44:58,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:44:58,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:58,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:44:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:44:58,643 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 08:44:58,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898551319] [2020-10-29 08:44:58,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:44:58,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:44:58,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402259129] [2020-10-29 08:44:58,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:44:58,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:44:58,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:44:58,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:44:58,680 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-29 08:45:24,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:45:24,925 INFO L93 Difference]: Finished difference Result 5091 states and 9567 transitions. [2020-10-29 08:45:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:45:24,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-29 08:45:24,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:45:24,978 INFO L225 Difference]: With dead ends: 5091 [2020-10-29 08:45:24,979 INFO L226 Difference]: Without dead ends: 3246 [2020-10-29 08:45:24,993 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 08:45:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2020-10-29 08:45:25,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3179. [2020-10-29 08:45:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-29 08:45:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5850 transitions. [2020-10-29 08:45:25,218 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5850 transitions. Word has length 56 [2020-10-29 08:45:25,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:45:25,219 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 5850 transitions. [2020-10-29 08:45:25,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:45:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5850 transitions. [2020-10-29 08:45:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 08:45:25,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:45:25,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:25,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:45:25,227 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:45:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:45:25,228 INFO L82 PathProgramCache]: Analyzing trace with hash -438951134, now seen corresponding path program 1 times [2020-10-29 08:45:25,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:45:25,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708982137] [2020-10-29 08:45:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:45:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:27,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:27,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 08:45:27,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:45:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1797 [2020-10-29 08:45:27,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:27,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:27,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:45:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 08:45:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 08:45:27,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:45:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:45:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:27,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:27,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:27,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:45:27,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:45:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:27,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:45:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:45:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:45:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:45:27,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:45:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:27,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:27,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:45:27,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:45:27,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 08:45:27,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:27,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:45:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:45:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 08:45:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:45:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:45:27,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708982137] [2020-10-29 08:45:27,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:45:27,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:45:27,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342289545] [2020-10-29 08:45:27,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:45:27,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:45:27,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:45:27,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:45:27,576 INFO L87 Difference]: Start difference. First operand 3179 states and 5850 transitions. Second operand 5 states. [2020-10-29 08:46:02,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:46:02,613 INFO L93 Difference]: Finished difference Result 9219 states and 17198 transitions. [2020-10-29 08:46:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:46:02,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 08:46:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:46:02,662 INFO L225 Difference]: With dead ends: 9219 [2020-10-29 08:46:02,662 INFO L226 Difference]: Without dead ends: 6046 [2020-10-29 08:46:02,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:46:02,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2020-10-29 08:46:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 6025. [2020-10-29 08:46:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6025 states. [2020-10-29 08:46:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 10332 transitions. [2020-10-29 08:46:02,901 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 10332 transitions. Word has length 127 [2020-10-29 08:46:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:46:02,903 INFO L481 AbstractCegarLoop]: Abstraction has 6025 states and 10332 transitions. [2020-10-29 08:46:02,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:46:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 10332 transitions. [2020-10-29 08:46:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 08:46:02,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:46:02,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:02,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:46:02,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:46:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:46:02,920 INFO L82 PathProgramCache]: Analyzing trace with hash -609348592, now seen corresponding path program 1 times [2020-10-29 08:46:02,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:46:02,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851407592] [2020-10-29 08:46:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:46:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:03,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 08:46:03,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-29 08:46:03,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:03,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:46:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:46:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:46:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:46:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:03,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:03,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:03,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:46:03,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:03,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:46:03,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:03,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:46:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:46:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:46:03,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:03,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:46:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:03,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:03,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:46:03,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 08:46:03,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:03,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:03,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:46:03,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:46:03,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:46:03,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:46:04,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851407592] [2020-10-29 08:46:04,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:46:04,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:46:04,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588570529] [2020-10-29 08:46:04,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:46:04,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:46:04,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:46:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:46:04,013 INFO L87 Difference]: Start difference. First operand 6025 states and 10332 transitions. Second operand 7 states. [2020-10-29 08:46:04,169 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:47:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:47:01,983 INFO L93 Difference]: Finished difference Result 16595 states and 29142 transitions. [2020-10-29 08:47:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:47:01,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-29 08:47:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:47:02,053 INFO L225 Difference]: With dead ends: 16595 [2020-10-29 08:47:02,058 INFO L226 Difference]: Without dead ends: 10576 [2020-10-29 08:47:02,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 08:47:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2020-10-29 08:47:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 10382. [2020-10-29 08:47:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10382 states. [2020-10-29 08:47:02,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10382 states to 10382 states and 16601 transitions. [2020-10-29 08:47:02,450 INFO L78 Accepts]: Start accepts. Automaton has 10382 states and 16601 transitions. Word has length 129 [2020-10-29 08:47:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:47:02,452 INFO L481 AbstractCegarLoop]: Abstraction has 10382 states and 16601 transitions. [2020-10-29 08:47:02,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:47:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 10382 states and 16601 transitions. [2020-10-29 08:47:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 08:47:02,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:47:02,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:02,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:47:02,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:47:02,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:47:02,468 INFO L82 PathProgramCache]: Analyzing trace with hash -640217818, now seen corresponding path program 1 times [2020-10-29 08:47:02,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:47:02,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748295751] [2020-10-29 08:47:02,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:47:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:04,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:04,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 08:47:04,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:47:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-10-29 08:47:04,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:04,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:47:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:47:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 08:47:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:47:04,561 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:47:04,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:47:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:04,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:04,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:47:04,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:47:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:47:04,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:04,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:47:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:47:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:47:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:47:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:47:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:04,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:04,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:47:04,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:47:04,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 08:47:04,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:04,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:47:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:47:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:47:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:47:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:47:05,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748295751] [2020-10-29 08:47:05,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:47:05,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:47:05,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674306109] [2020-10-29 08:47:05,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:47:05,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:47:05,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:47:05,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:47:05,080 INFO L87 Difference]: Start difference. First operand 10382 states and 16601 transitions. Second operand 7 states. [2020-10-29 08:47:05,242 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:48:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:48:10,469 INFO L93 Difference]: Finished difference Result 25430 states and 40618 transitions. [2020-10-29 08:48:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:48:10,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-29 08:48:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:48:10,538 INFO L225 Difference]: With dead ends: 25430 [2020-10-29 08:48:10,538 INFO L226 Difference]: Without dead ends: 15054 [2020-10-29 08:48:10,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:48:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15054 states. [2020-10-29 08:48:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15054 to 14965. [2020-10-29 08:48:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14965 states. [2020-10-29 08:48:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14965 states to 14965 states and 22568 transitions. [2020-10-29 08:48:11,046 INFO L78 Accepts]: Start accepts. Automaton has 14965 states and 22568 transitions. Word has length 143 [2020-10-29 08:48:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:48:11,048 INFO L481 AbstractCegarLoop]: Abstraction has 14965 states and 22568 transitions. [2020-10-29 08:48:11,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:48:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 14965 states and 22568 transitions. [2020-10-29 08:48:11,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 08:48:11,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:48:11,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:11,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:48:11,055 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:48:11,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:48:11,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1604044015, now seen corresponding path program 1 times [2020-10-29 08:48:11,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:48:11,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570326995] [2020-10-29 08:48:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:48:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:13,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:13,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 08:48:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:48:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-10-29 08:48:13,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:13,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:48:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:48:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:48:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:48:13,515 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:48:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:48:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:13,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:13,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:48:13,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:48:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:48:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:13,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:48:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:48:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:48:13,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:48:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:48:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:48:13,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:48:14,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:48:14,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 08:48:14,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:48:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-29 08:48:14,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:48:14,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:48:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:48:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:48:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:48:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:48:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:48:14,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570326995] [2020-10-29 08:48:14,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:48:14,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:48:14,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828492021] [2020-10-29 08:48:14,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:48:14,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:48:14,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:48:14,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:48:14,172 INFO L87 Difference]: Start difference. First operand 14965 states and 22568 transitions. Second operand 7 states. [2020-10-29 08:48:14,372 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:48:16,756 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66