/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:14:45,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:14:45,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:14:45,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:14:45,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:14:45,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:14:45,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:14:45,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:14:45,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:14:45,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:14:45,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:14:45,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:14:45,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:14:45,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:14:45,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:14:45,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:14:45,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:14:45,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:14:45,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:14:45,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:14:45,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:14:45,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:14:45,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:14:45,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:14:45,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:14:45,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:14:45,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:14:45,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:14:45,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:14:45,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:14:45,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:14:45,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:14:45,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:14:45,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:14:45,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:14:45,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:14:45,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:14:45,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:14:45,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:14:45,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:14:45,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:14:45,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:14:45,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:14:45,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:14:45,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:14:45,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:14:45,964 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:14:45,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:14:45,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:14:45,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:14:45,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:14:45,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:14:45,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:14:45,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:14:45,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:14:45,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:14:45,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:14:45,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:14:45,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:14:45,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:14:45,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:14:45,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:14:45,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:14:45,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:14:45,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:14:45,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:14:45,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:14:45,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:14:45,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:14:45,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:14:45,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:14:45,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:14:46,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:14:46,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:14:46,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:14:46,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:14:46,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:14:46,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45.c [2020-10-28 14:14:46,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15b905cb/901daa85d4f24a5582866fb4102a9603/FLAGc9c90e5aa [2020-10-28 14:14:48,016 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:14:48,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label45.c [2020-10-28 14:14:48,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15b905cb/901daa85d4f24a5582866fb4102a9603/FLAGc9c90e5aa [2020-10-28 14:14:48,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15b905cb/901daa85d4f24a5582866fb4102a9603 [2020-10-28 14:14:48,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:14:48,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:14:48,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:14:48,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:14:48,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:14:48,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:14:48" (1/1) ... [2020-10-28 14:14:48,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16cc08e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:48, skipping insertion in model container [2020-10-28 14:14:48,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:14:48" (1/1) ... [2020-10-28 14:14:48,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:14:48,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:14:51,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:14:51,031 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:14:52,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:14:52,483 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:14:52,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52 WrapperNode [2020-10-28 14:14:52,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:14:52,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:14:52,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:14:52,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:14:52,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (1/1) ... [2020-10-28 14:14:52,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (1/1) ... [2020-10-28 14:14:52,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (1/1) ... [2020-10-28 14:14:52,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (1/1) ... [2020-10-28 14:14:52,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (1/1) ... [2020-10-28 14:14:53,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (1/1) ... [2020-10-28 14:14:53,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (1/1) ... [2020-10-28 14:14:53,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:14:53,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:14:53,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:14:53,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:14:53,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:14:53,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:14:53,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:14:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:14:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:14:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:14:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:14:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:14:53,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:14:53,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:14:53,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:14:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:14:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:14:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:14:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:14:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:14:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:14:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:14:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:14:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:14:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:14:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:14:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:14:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:14:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:14:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:14:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:14:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:14:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:14:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:15:09,107 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:15:09,107 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:15:09,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:15:09 BoogieIcfgContainer [2020-10-28 14:15:09,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:15:09,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:15:09,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:15:09,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:15:09,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:14:48" (1/3) ... [2020-10-28 14:15:09,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51203ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:15:09, skipping insertion in model container [2020-10-28 14:15:09,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:14:52" (2/3) ... [2020-10-28 14:15:09,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51203ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:15:09, skipping insertion in model container [2020-10-28 14:15:09,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:15:09" (3/3) ... [2020-10-28 14:15:09,130 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label45.c [2020-10-28 14:15:09,150 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:15:09,159 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:15:09,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:15:09,223 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:15:09,223 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:15:09,223 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:15:09,223 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:15:09,223 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:15:09,223 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:15:09,224 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:15:09,224 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:15:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:15:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:15:09,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:15:09,294 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] [2020-10-28 14:15:09,295 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:15:09,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:15:09,303 INFO L82 PathProgramCache]: Analyzing trace with hash 662270829, now seen corresponding path program 1 times [2020-10-28 14:15:09,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:15:09,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607547989] [2020-10-28 14:15:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:15:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 14:15:10,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:15:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-28 14:15:10,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:10,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:15:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:15:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:15:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:15:10,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:15:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:10,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:10,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:15:10,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:15:10,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:15:10,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:10,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:15:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:15:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:15:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:15:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:15:10,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607547989] [2020-10-28 14:15:10,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:15:10,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:15:10,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746797558] [2020-10-28 14:15:10,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:15:10,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:15:10,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:15:10,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:15:10,766 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-28 14:15:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:15:53,103 INFO L93 Difference]: Finished difference Result 6484 states and 12306 transitions. [2020-10-28 14:15:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:15:53,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-28 14:15:53,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:15:53,162 INFO L225 Difference]: With dead ends: 6484 [2020-10-28 14:15:53,162 INFO L226 Difference]: Without dead ends: 4635 [2020-10-28 14:15:53,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:15:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2020-10-28 14:15:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4627. [2020-10-28 14:15:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2020-10-28 14:15:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7766 transitions. [2020-10-28 14:15:53,483 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7766 transitions. Word has length 54 [2020-10-28 14:15:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:15:53,486 INFO L481 AbstractCegarLoop]: Abstraction has 4627 states and 7766 transitions. [2020-10-28 14:15:53,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:15:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7766 transitions. [2020-10-28 14:15:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 14:15:53,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:15:53,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:15:53,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:15:53,503 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:15:53,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:15:53,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1133668943, now seen corresponding path program 1 times [2020-10-28 14:15:53,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:15:53,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016880102] [2020-10-28 14:15:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:15:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:53,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:54,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:54,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:55,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:56,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:56,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 14:15:56,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:15:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2458 [2020-10-28 14:15:56,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:56,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:15:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 14:15:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:15:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:15:56,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:15:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:56,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:15:56,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:15:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:15:56,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:56,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:15:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:15:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:15:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:15:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:15:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:56,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:56,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:15:56,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:15:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 14:15:56,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:56,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:15:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 14:15:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:15:56,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:15:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:15:56,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016880102] [2020-10-28 14:15:56,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:15:56,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:15:56,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26769063] [2020-10-28 14:15:56,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:15:56,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:15:56,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:15:56,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:15:56,420 INFO L87 Difference]: Start difference. First operand 4627 states and 7766 transitions. Second operand 5 states. [2020-10-28 14:16:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:16:40,002 INFO L93 Difference]: Finished difference Result 13496 states and 22983 transitions. [2020-10-28 14:16:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:16:40,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-28 14:16:40,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:16:40,055 INFO L225 Difference]: With dead ends: 13496 [2020-10-28 14:16:40,055 INFO L226 Difference]: Without dead ends: 8875 [2020-10-28 14:16:40,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:16:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2020-10-28 14:16:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 8860. [2020-10-28 14:16:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8860 states. [2020-10-28 14:16:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8860 states to 8860 states and 13052 transitions. [2020-10-28 14:16:40,340 INFO L78 Accepts]: Start accepts. Automaton has 8860 states and 13052 transitions. Word has length 127 [2020-10-28 14:16:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:16:40,341 INFO L481 AbstractCegarLoop]: Abstraction has 8860 states and 13052 transitions. [2020-10-28 14:16:40,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:16:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8860 states and 13052 transitions. [2020-10-28 14:16:40,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 14:16:40,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:16:40,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:16:40,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:16:40,345 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:16:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:16:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash 2060639973, now seen corresponding path program 1 times [2020-10-28 14:16:40,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:16:40,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609551555] [2020-10-28 14:16:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:16:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:40,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:41,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:41,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 14:16:41,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:16:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-28 14:16:41,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:41,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:16:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:16:41,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 14:16:41,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:16:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:16:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:41,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:41,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:41,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:16:41,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:41,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:16:41,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:41,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:16:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:16:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:16:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:16:41,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:16:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:42,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:42,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 14:16:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-28 14:16:42,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:42,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:16:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:16:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 14:16:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:16:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:16:42,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609551555] [2020-10-28 14:16:42,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:16:42,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:16:42,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196949583] [2020-10-28 14:16:42,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:16:42,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:16:42,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:16:42,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:16:42,170 INFO L87 Difference]: Start difference. First operand 8860 states and 13052 transitions. Second operand 7 states. [2020-10-28 14:17:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:17:27,575 INFO L93 Difference]: Finished difference Result 20787 states and 30628 transitions. [2020-10-28 14:17:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:17:27,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-10-28 14:17:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:17:27,671 INFO L225 Difference]: With dead ends: 20787 [2020-10-28 14:17:27,672 INFO L226 Difference]: Without dead ends: 11933 [2020-10-28 14:17:27,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:17:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11933 states. [2020-10-28 14:17:28,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11933 to 11836. [2020-10-28 14:17:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11836 states. [2020-10-28 14:17:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 16039 transitions. [2020-10-28 14:17:28,129 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 16039 transitions. Word has length 158 [2020-10-28 14:17:28,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:17:28,132 INFO L481 AbstractCegarLoop]: Abstraction has 11836 states and 16039 transitions. [2020-10-28 14:17:28,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:17:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 16039 transitions. [2020-10-28 14:17:28,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 14:17:28,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:17:28,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:17:28,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:17:28,147 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:17:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:17:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash 599048133, now seen corresponding path program 1 times [2020-10-28 14:17:28,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:17:28,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176700718] [2020-10-28 14:17:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:17:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:28,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:31,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:31,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 14:17:31,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:17:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3059 [2020-10-28 14:17:31,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:31,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:17:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:17:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 14:17:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:17:31,520 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:17:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:17:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:31,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:31,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:17:31,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:31,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:17:31,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:31,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:31,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:17:31,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:17:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:17:31,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:17:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:31,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 14:17:31,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 14:17:31,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:31,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:17:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:17:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 14:17:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:17:32,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176700718] [2020-10-28 14:17:32,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:17:32,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:17:32,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402046596] [2020-10-28 14:17:32,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:17:32,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:17:32,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:17:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:17:32,089 INFO L87 Difference]: Start difference. First operand 11836 states and 16039 transitions. Second operand 7 states. [2020-10-28 14:17:32,350 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 14:18:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:18:39,137 INFO L93 Difference]: Finished difference Result 36093 states and 50766 transitions. [2020-10-28 14:18:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:18:39,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-28 14:18:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:18:39,246 INFO L225 Difference]: With dead ends: 36093 [2020-10-28 14:18:39,247 INFO L226 Difference]: Without dead ends: 24263 [2020-10-28 14:18:39,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:18:39,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24263 states. [2020-10-28 14:18:40,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24263 to 23970. [2020-10-28 14:18:40,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23970 states. [2020-10-28 14:18:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23970 states to 23970 states and 30811 transitions. [2020-10-28 14:18:40,109 INFO L78 Accepts]: Start accepts. Automaton has 23970 states and 30811 transitions. Word has length 174 [2020-10-28 14:18:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:18:40,111 INFO L481 AbstractCegarLoop]: Abstraction has 23970 states and 30811 transitions. [2020-10-28 14:18:40,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:18:40,111 INFO L276 IsEmpty]: Start isEmpty. Operand 23970 states and 30811 transitions. [2020-10-28 14:18:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 14:18:40,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:18:40,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:18:40,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:18:40,118 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:18:40,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:18:40,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1022057448, now seen corresponding path program 1 times [2020-10-28 14:18:40,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:18:40,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980035736] [2020-10-28 14:18:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:18:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 14:18:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:18:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2672 [2020-10-28 14:18:42,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:42,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:18:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:18:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 14:18:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:18:43,113 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:18:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:18:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:43,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:43,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:18:43,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:18:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:18:43,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:43,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:18:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:18:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:18:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:18:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:18:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:18:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:18:43,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:18:43,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 14:18:43,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:18:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-28 14:18:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:18:43,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:18:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:18:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:18:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-28 14:18:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:18:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:18:43,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980035736] [2020-10-28 14:18:43,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:18:43,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:18:43,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162482763] [2020-10-28 14:18:43,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:18:43,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:18:43,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:18:43,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:18:43,974 INFO L87 Difference]: Start difference. First operand 23970 states and 30811 transitions. Second operand 7 states. [2020-10-28 14:18:44,168 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 66