/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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:56:38,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:56:38,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:56:38,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:56:38,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:56:38,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:56:38,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:56:38,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:56:38,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:56:38,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:56:38,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:56:38,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:56:38,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:56:38,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:56:38,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:56:38,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:56:38,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:56:38,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:56:38,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:56:38,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:56:38,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:56:38,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:56:38,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:56:38,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:56:38,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:56:38,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:56:38,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:56:38,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:56:38,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:56:38,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:56:38,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:56:38,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:56:38,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:56:38,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:56:38,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:56:38,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:56:38,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:56:38,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:56:38,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:56:38,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:56:38,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:56:38,490 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 08:56:38,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:56:38,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:56:38,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:56:38,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:56:38,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:56:38,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:56:38,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:56:38,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:56:38,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:56:38,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:56:38,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:56:38,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:56:38,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:56:38,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:56:38,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:56:38,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:56:38,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:56:38,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:56:38,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:56:38,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:56:38,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:56:38,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:56:38,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:56:38,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:56:38,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:56:38,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:56:38,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:56:38,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:56:38,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:56:38,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:56:39,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:56:39,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:56:39,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:56:39,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:56:39,165 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:56:39,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49.c [2020-10-29 08:56:39,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a79f692/b682deebcc6146caa90dfe52100e78d2/FLAG0540d1e00 [2020-10-29 08:56:40,563 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:56:40,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label49.c [2020-10-29 08:56:40,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a79f692/b682deebcc6146caa90dfe52100e78d2/FLAG0540d1e00 [2020-10-29 08:56:40,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a79f692/b682deebcc6146caa90dfe52100e78d2 [2020-10-29 08:56:40,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:56:40,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:56:40,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:56:40,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:56:40,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:56:40,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:56:40" (1/1) ... [2020-10-29 08:56:40,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a5f291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:40, skipping insertion in model container [2020-10-29 08:56:40,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:56:40" (1/1) ... [2020-10-29 08:56:40,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:56:41,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:56:43,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:56:43,588 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:56:44,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:56:44,914 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:56:44,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44 WrapperNode [2020-10-29 08:56:44,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:56:44,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:56:44,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:56:44,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:56:44,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (1/1) ... [2020-10-29 08:56:44,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (1/1) ... [2020-10-29 08:56:45,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (1/1) ... [2020-10-29 08:56:45,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (1/1) ... [2020-10-29 08:56:45,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (1/1) ... [2020-10-29 08:56:45,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (1/1) ... [2020-10-29 08:56:45,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (1/1) ... [2020-10-29 08:56:45,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:56:45,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:56:45,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:56:45,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:56:45,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (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 08:56:45,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:56:45,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:56:45,947 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:56:45,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:56:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:56:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:56:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:56:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:56:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:56:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:56:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:56:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:56:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:56:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:56:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:56:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:56:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:56:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:56:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:56:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:56:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:56:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:56:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:56:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:56:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:56:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:56:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:56:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:56:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:57:04,041 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:57:04,042 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:57:04,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:57:04 BoogieIcfgContainer [2020-10-29 08:57:04,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:57:04,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:57:04,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:57:04,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:57:04,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:56:40" (1/3) ... [2020-10-29 08:57:04,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f15e0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:57:04, skipping insertion in model container [2020-10-29 08:57:04,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:56:44" (2/3) ... [2020-10-29 08:57:04,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f15e0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:57:04, skipping insertion in model container [2020-10-29 08:57:04,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:57:04" (3/3) ... [2020-10-29 08:57:04,062 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label49.c [2020-10-29 08:57:04,079 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:57:04,088 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:57:04,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:57:04,152 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:57:04,153 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:57:04,153 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:57:04,153 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:57:04,153 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:57:04,153 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:57:04,154 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:57:04,154 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:57:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:57:04,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 08:57:04,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:57:04,239 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] [2020-10-29 08:57:04,240 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:57:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:57:04,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2083495358, now seen corresponding path program 1 times [2020-10-29 08:57:04,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:57:04,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219683952] [2020-10-29 08:57:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:57:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:05,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:05,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 08:57:05,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:57:05,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-29 08:57:05,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:05,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:57:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:57:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 08:57:05,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:57:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:57:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:05,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:05,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:57:05,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:57:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 08:57:05,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:05,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:57:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:57:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:57:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:57:05,721 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 08:57:05,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219683952] [2020-10-29 08:57:05,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:57:05,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:57:05,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027056748] [2020-10-29 08:57:05,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:57:05,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:57:05,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:57:05,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:57:05,755 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-29 08:57:35,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:57:35,734 INFO L93 Difference]: Finished difference Result 5091 states and 9567 transitions. [2020-10-29 08:57:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:57:35,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-29 08:57:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:57:35,797 INFO L225 Difference]: With dead ends: 5091 [2020-10-29 08:57:35,798 INFO L226 Difference]: Without dead ends: 3246 [2020-10-29 08:57:35,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:57:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2020-10-29 08:57:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3179. [2020-10-29 08:57:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-29 08:57:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5850 transitions. [2020-10-29 08:57:36,103 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5850 transitions. Word has length 49 [2020-10-29 08:57:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:57:36,105 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 5850 transitions. [2020-10-29 08:57:36,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:57:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5850 transitions. [2020-10-29 08:57:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 08:57:36,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:57:36,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:36,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:57:36,122 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:57:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:57:36,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1915754128, now seen corresponding path program 1 times [2020-10-29 08:57:36,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:57:36,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121246161] [2020-10-29 08:57:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:57:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:37,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 08:57:37,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:57:37,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-29 08:57:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:37,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:57:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:57:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:57:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:57:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:57:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:37,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:37,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:57:37,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:57:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:57:37,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:37,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:57:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:57:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:57:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:57:37,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:57:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:38,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:38,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:57:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:57:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:57:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:57:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:57:38,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121246161] [2020-10-29 08:57:38,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:57:38,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:57:38,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816440742] [2020-10-29 08:57:38,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:57:38,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:57:38,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:57:38,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:57:38,402 INFO L87 Difference]: Start difference. First operand 3179 states and 5850 transitions. Second operand 8 states. [2020-10-29 08:58:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:58:44,773 INFO L93 Difference]: Finished difference Result 9475 states and 17496 transitions. [2020-10-29 08:58:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:58:44,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-29 08:58:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:58:44,811 INFO L225 Difference]: With dead ends: 9475 [2020-10-29 08:58:44,811 INFO L226 Difference]: Without dead ends: 6302 [2020-10-29 08:58:44,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:58:44,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6302 states. [2020-10-29 08:58:44,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 6152. [2020-10-29 08:58:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6152 states. [2020-10-29 08:58:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 10297 transitions. [2020-10-29 08:58:45,008 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 10297 transitions. Word has length 120 [2020-10-29 08:58:45,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:58:45,009 INFO L481 AbstractCegarLoop]: Abstraction has 6152 states and 10297 transitions. [2020-10-29 08:58:45,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:58:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 10297 transitions. [2020-10-29 08:58:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 08:58:45,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:58:45,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:45,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:58:45,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:58:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:58:45,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1036218847, now seen corresponding path program 1 times [2020-10-29 08:58:45,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:58:45,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233981993] [2020-10-29 08:58:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:58:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:58:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:58:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:58:45,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:58:45,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 08:58:45,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:58:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-29 08:58:45,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:58:45,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:58:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:58:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:58:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:58:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:58:46,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:58:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:58:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:58:46,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:58:46,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:58:46,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:58:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:58:46,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:58:46,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:58:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:58:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:58:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:58:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:58:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:58:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:58:46,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:58:46,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:58:46,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:58:46,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:58:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 08:58:46,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:58:46,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:58:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:58:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:58:46,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:58:46,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:58:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:58:46,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233981993] [2020-10-29 08:58:46,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:58:46,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:58:46,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087791959] [2020-10-29 08:58:46,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:58:46,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:58:46,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:58:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:58:46,400 INFO L87 Difference]: Start difference. First operand 6152 states and 10297 transitions. Second operand 7 states. [2020-10-29 08:59:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:59:24,651 INFO L93 Difference]: Finished difference Result 18342 states and 31564 transitions. [2020-10-29 08:59:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:59:24,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-29 08:59:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:59:24,727 INFO L225 Difference]: With dead ends: 18342 [2020-10-29 08:59:24,727 INFO L226 Difference]: Without dead ends: 12196 [2020-10-29 08:59:24,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:59:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12196 states. [2020-10-29 08:59:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12196 to 12022. [2020-10-29 08:59:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12022 states. [2020-10-29 08:59:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12022 states to 12022 states and 19803 transitions. [2020-10-29 08:59:25,110 INFO L78 Accepts]: Start accepts. Automaton has 12022 states and 19803 transitions. Word has length 125 [2020-10-29 08:59:25,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:59:25,111 INFO L481 AbstractCegarLoop]: Abstraction has 12022 states and 19803 transitions. [2020-10-29 08:59:25,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:59:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 12022 states and 19803 transitions. [2020-10-29 08:59:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 08:59:25,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:59:25,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:25,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:59:25,114 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:59:25,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:59:25,115 INFO L82 PathProgramCache]: Analyzing trace with hash -256828823, now seen corresponding path program 1 times [2020-10-29 08:59:25,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:59:25,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817184388] [2020-10-29 08:59:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:59:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:59:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:59:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:59:25,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:59:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:59:26,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:59:26,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 08:59:26,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:59:26,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1732 [2020-10-29 08:59:26,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:59:26,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:59:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:59:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:59:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:59:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:59:27,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:59:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:59:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:59:27,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:59:27,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:59:27,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:59:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:59:27,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:59:27,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:59:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:59:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:59:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:59:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:59:27,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:59:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:59:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:59:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:59:27,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:59:27,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 08:59:27,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:59:27,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 08:59:27,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:59:27,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:59:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:59:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:59:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:59:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:59:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:59:27,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817184388] [2020-10-29 08:59:27,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:59:27,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:59:27,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779796571] [2020-10-29 08:59:27,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:59:27,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:59:27,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:59:27,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:59:27,466 INFO L87 Difference]: Start difference. First operand 12022 states and 19803 transitions. Second operand 7 states. [2020-10-29 09:00:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:00:42,725 INFO L93 Difference]: Finished difference Result 41315 states and 69805 transitions. [2020-10-29 09:00:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:00:42,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-29 09:00:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:00:42,882 INFO L225 Difference]: With dead ends: 41315 [2020-10-29 09:00:42,883 INFO L226 Difference]: Without dead ends: 29299 [2020-10-29 09:00:42,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:00:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29299 states.