/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_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:48:43,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:48:43,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:48:43,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:48:43,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:48:43,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:48:43,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:48:43,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:48:43,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:48:43,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:48:43,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:48:43,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:48:43,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:48:43,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:48:43,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:48:43,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:48:43,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:48:43,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:48:43,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:48:43,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:48:43,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:48:43,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:48:43,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:48:43,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:48:43,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:48:43,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:48:44,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:48:44,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:48:44,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:48:44,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:48:44,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:48:44,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:48:44,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:48:44,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:48:44,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:48:44,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:48:44,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:48:44,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:48:44,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:48:44,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:48:44,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:48:44,029 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 08:48:44,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:48:44,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:48:44,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:48:44,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:48:44,063 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:48:44,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:48:44,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:48:44,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:48:44,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:48:44,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:48:44,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:48:44,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:48:44,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:48:44,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:48:44,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:48:44,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:48:44,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:48:44,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:48:44,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:48:44,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:48:44,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:48:44,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:48:44,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:48:44,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:48:44,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:48:44,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:48:44,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:48:44,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:48:44,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:48:44,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:48:44,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:48:44,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:48:44,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:48:44,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:48:44,605 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:48:44,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23.c [2020-10-29 08:48:44,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4001266/b384c3b1fde94b1ab37293cf87fa5cf8/FLAG8e2b3bb90 [2020-10-29 08:48:46,107 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:48:46,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label23.c [2020-10-29 08:48:46,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4001266/b384c3b1fde94b1ab37293cf87fa5cf8/FLAG8e2b3bb90 [2020-10-29 08:48:46,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4001266/b384c3b1fde94b1ab37293cf87fa5cf8 [2020-10-29 08:48:46,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:48:46,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:48:46,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:48:46,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:48:46,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:48:46,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:48:46" (1/1) ... [2020-10-29 08:48:46,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cb9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:46, skipping insertion in model container [2020-10-29 08:48:46,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:48:46" (1/1) ... [2020-10-29 08:48:46,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:48:46,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:48:49,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:48:49,098 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:48:50,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:48:50,477 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:48:50,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50 WrapperNode [2020-10-29 08:48:50,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:48:50,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:48:50,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:48:50,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:48:50,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (1/1) ... [2020-10-29 08:48:50,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (1/1) ... [2020-10-29 08:48:50,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (1/1) ... [2020-10-29 08:48:50,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (1/1) ... [2020-10-29 08:48:50,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (1/1) ... [2020-10-29 08:48:51,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (1/1) ... [2020-10-29 08:48:51,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (1/1) ... [2020-10-29 08:48:51,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:48:51,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:48:51,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:48:51,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:48:51,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (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 08:48:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:48:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:48:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:48:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:48:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:48:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:48:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:48:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:48:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:48:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:48:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:48:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:48:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:48:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:48:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:48:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:48:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:48:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:48:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:48:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:48:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:48:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:48:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:48:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:48:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:48:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:48:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:48:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:48:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:49:09,573 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:49:09,573 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:49:09,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:49:09 BoogieIcfgContainer [2020-10-29 08:49:09,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:49:09,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:49:09,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:49:09,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:49:09,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:48:46" (1/3) ... [2020-10-29 08:49:09,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f332a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:49:09, skipping insertion in model container [2020-10-29 08:49:09,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:48:50" (2/3) ... [2020-10-29 08:49:09,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f332a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:49:09, skipping insertion in model container [2020-10-29 08:49:09,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:49:09" (3/3) ... [2020-10-29 08:49:09,595 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label23.c [2020-10-29 08:49:09,611 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:49:09,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:49:09,637 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:49:09,692 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:49:09,693 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:49:09,693 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:49:09,693 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:49:09,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:49:09,693 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:49:09,694 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:49:09,694 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:49:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:49:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 08:49:09,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:49:09,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:49:09,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:49:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:49:09,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1328439110, now seen corresponding path program 1 times [2020-10-29 08:49:09,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:49:09,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827507871] [2020-10-29 08:49:09,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:49:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:49:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:10,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:49:10,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 08:49:10,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:49:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-29 08:49:10,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:49:10,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:49:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:49:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:49:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 08:49:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:49:11,170 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:49:11,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:49:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:49:11,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:49:11,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:49:11,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:49:11,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:49:11,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:49:11,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:49:11,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:49:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:49:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:49:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:49:11,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:49:11,281 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 08:49:11,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827507871] [2020-10-29 08:49:11,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:49:11,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:49:11,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647460945] [2020-10-29 08:49:11,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:49:11,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:49:11,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:49:11,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:49:11,313 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-29 08:49:11,504 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:49:12,495 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:50:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:50:14,376 INFO L93 Difference]: Finished difference Result 6577 states and 12487 transitions. [2020-10-29 08:50:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:50:14,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-29 08:50:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:50:14,459 INFO L225 Difference]: With dead ends: 6577 [2020-10-29 08:50:14,460 INFO L226 Difference]: Without dead ends: 4728 [2020-10-29 08:50:14,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:50:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-29 08:50:14,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4641. [2020-10-29 08:50:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4641 states. [2020-10-29 08:50:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 7458 transitions. [2020-10-29 08:50:14,851 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 7458 transitions. Word has length 59 [2020-10-29 08:50:14,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:50:14,854 INFO L481 AbstractCegarLoop]: Abstraction has 4641 states and 7458 transitions. [2020-10-29 08:50:14,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:50:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 7458 transitions. [2020-10-29 08:50:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 08:50:14,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:50:14,877 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, 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] [2020-10-29 08:50:14,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:50:14,879 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:50:14,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:50:14,882 INFO L82 PathProgramCache]: Analyzing trace with hash 937088238, now seen corresponding path program 1 times [2020-10-29 08:50:14,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:50:14,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590461408] [2020-10-29 08:50:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:50:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:50:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:50:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:50:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:50:17,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:50:17,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 08:50:17,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:50:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2114 [2020-10-29 08:50:17,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:50:17,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:50:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:50:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:50:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 08:50:17,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:50:17,414 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:50:17,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:50:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:50:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:50:17,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:50:17,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:50:17,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:50:17,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:50:17,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:50:17,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:50:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:50:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:50:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:50:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:50:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:50:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:50:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:50:17,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:50:17,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:50:17,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:50:17,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:50:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 08:50:17,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:50:17,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:50:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:50:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:50:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:50:17,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:50:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:50:17,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590461408] [2020-10-29 08:50:17,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:50:17,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:50:17,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296459590] [2020-10-29 08:50:17,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:50:17,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:50:17,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:50:17,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:50:17,972 INFO L87 Difference]: Start difference. First operand 4641 states and 7458 transitions. Second operand 7 states. [2020-10-29 08:50:18,170 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:50:20,474 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:51:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:51:07,997 INFO L93 Difference]: Finished difference Result 13779 states and 22443 transitions. [2020-10-29 08:51:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:51:08,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-29 08:51:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:51:08,067 INFO L225 Difference]: With dead ends: 13779 [2020-10-29 08:51:08,067 INFO L226 Difference]: Without dead ends: 9144 [2020-10-29 08:51:08,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:51:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9144 states. [2020-10-29 08:51:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9144 to 9009. [2020-10-29 08:51:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9009 states. [2020-10-29 08:51:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9009 states to 9009 states and 12654 transitions. [2020-10-29 08:51:08,355 INFO L78 Accepts]: Start accepts. Automaton has 9009 states and 12654 transitions. Word has length 134 [2020-10-29 08:51:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:51:08,356 INFO L481 AbstractCegarLoop]: Abstraction has 9009 states and 12654 transitions. [2020-10-29 08:51:08,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:51:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 9009 states and 12654 transitions. [2020-10-29 08:51:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 08:51:08,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:51:08,359 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, 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] [2020-10-29 08:51:08,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:51:08,360 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:51:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:51:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1273129424, now seen corresponding path program 1 times [2020-10-29 08:51:08,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:51:08,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30340474] [2020-10-29 08:51:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:51:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:51:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:08,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:10,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:51:10,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 08:51:10,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:51:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2059 [2020-10-29 08:51:10,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:51:10,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:51:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:51:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:51:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:51:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:51:10,669 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:51:10,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:51:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:51:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:10,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:51:10,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:51:10,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:51:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:51:10,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:51:10,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:51:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:51:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:51:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:51:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:51:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:51:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:51:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:51:10,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:51:10,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:51:10,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:51:10,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 08:51:10,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:51:10,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:51:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:51:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:51:10,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:51:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:51:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:51:11,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30340474] [2020-10-29 08:51:11,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:51:11,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:51:11,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785319880] [2020-10-29 08:51:11,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:51:11,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:51:11,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:51:11,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:51:11,145 INFO L87 Difference]: Start difference. First operand 9009 states and 12654 transitions. Second operand 7 states. [2020-10-29 08:51:11,333 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:51:13,481 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:52:19,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:52:19,557 INFO L93 Difference]: Finished difference Result 27283 states and 39190 transitions. [2020-10-29 08:52:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:52:19,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-29 08:52:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:52:19,665 INFO L225 Difference]: With dead ends: 27283 [2020-10-29 08:52:19,665 INFO L226 Difference]: Without dead ends: 18280 [2020-10-29 08:52:19,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:52:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18280 states. [2020-10-29 08:52:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18280 to 17992. [2020-10-29 08:52:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17992 states. [2020-10-29 08:52:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17992 states to 17992 states and 23328 transitions. [2020-10-29 08:52:20,224 INFO L78 Accepts]: Start accepts. Automaton has 17992 states and 23328 transitions. Word has length 160 [2020-10-29 08:52:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:52:20,227 INFO L481 AbstractCegarLoop]: Abstraction has 17992 states and 23328 transitions. [2020-10-29 08:52:20,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:52:20,227 INFO L276 IsEmpty]: Start isEmpty. Operand 17992 states and 23328 transitions. [2020-10-29 08:52:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 08:52:20,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:52:20,234 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, 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] [2020-10-29 08:52:20,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:52:20,235 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:52:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:52:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1508887684, now seen corresponding path program 1 times [2020-10-29 08:52:20,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:52:20,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075445258] [2020-10-29 08:52:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:52:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:52:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:22,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:52:22,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 08:52:22,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:52:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2192 [2020-10-29 08:52:22,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:52:22,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:52:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:52:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:52:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:52:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:52:22,700 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:52:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:52:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:52:22,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:22,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:52:22,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:52:22,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:52:22,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:52:22,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:52:22,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:52:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:52:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:52:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:52:22,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:52:22,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:52:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:52:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:52:23,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:52:23,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 08:52:23,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:52:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-29 08:52:23,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:52:23,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:52:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:52:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:52:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 08:52:23,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:52:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:52:23,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075445258] [2020-10-29 08:52:23,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:52:23,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:52:23,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010876022] [2020-10-29 08:52:23,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:52:23,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:52:23,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:52:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:52:23,530 INFO L87 Difference]: Start difference. First operand 17992 states and 23328 transitions. Second operand 7 states. [2020-10-29 08:52:23,837 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:52:28,568 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 66