/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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:54:44,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:54:44,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:54:44,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:54:44,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:54:44,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:54:44,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:54:44,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:54:44,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:54:44,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:54:44,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:54:44,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:54:44,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:54:44,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:54:44,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:54:44,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:54:44,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:54:44,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:54:44,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:54:44,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:54:44,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:54:44,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:54:44,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:54:44,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:54:44,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:54:44,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:54:44,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:54:44,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:54:44,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:54:44,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:54:44,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:54:44,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:54:44,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:54:44,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:54:44,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:54:44,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:54:44,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:54:44,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:54:44,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:54:44,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:54:44,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:54:44,687 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 08:54:44,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:54:44,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:54:44,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:54:44,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:54:44,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:54:44,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:54:44,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:54:44,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:54:44,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:54:44,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:54:44,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:54:44,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:54:44,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:54:44,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:54:44,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:54:44,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:54:44,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:54:44,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:54:44,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:54:44,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:54:44,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:54:44,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:54:44,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:54:44,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:54:44,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:54:44,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:54:44,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:54:44,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:54:44,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:54:44,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:54:45,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:54:45,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:54:45,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:54:45,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:54:45,169 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:54:45,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46.c [2020-10-29 08:54:45,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eaf60c9f/e1c9653b7aed4eaa99b807f1655fa1fd/FLAG3c1db8f79 [2020-10-29 08:54:46,471 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:54:46,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label46.c [2020-10-29 08:54:46,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eaf60c9f/e1c9653b7aed4eaa99b807f1655fa1fd/FLAG3c1db8f79 [2020-10-29 08:54:46,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0eaf60c9f/e1c9653b7aed4eaa99b807f1655fa1fd [2020-10-29 08:54:46,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:54:46,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:54:46,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:54:46,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:54:46,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:54:46,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:54:46" (1/1) ... [2020-10-29 08:54:46,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44de4859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:46, skipping insertion in model container [2020-10-29 08:54:46,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:54:46" (1/1) ... [2020-10-29 08:54:46,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:54:47,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:54:49,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:54:49,528 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:54:50,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:54:50,800 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:54:50,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50 WrapperNode [2020-10-29 08:54:50,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:54:50,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:54:50,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:54:50,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:54:50,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (1/1) ... [2020-10-29 08:54:50,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (1/1) ... [2020-10-29 08:54:50,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (1/1) ... [2020-10-29 08:54:50,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (1/1) ... [2020-10-29 08:54:51,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (1/1) ... [2020-10-29 08:54:51,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (1/1) ... [2020-10-29 08:54:51,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (1/1) ... [2020-10-29 08:54:51,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:54:51,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:54:51,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:54:51,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:54:51,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (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 08:54:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:54:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:54:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:54:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:54:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:54:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:54:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:54:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:54:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:54:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:54:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:54:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:54:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:54:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:54:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:54:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:54:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:54:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:54:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:54:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:54:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:54:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:54:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:54:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:54:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:54:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:54:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:54:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:54:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:55:08,793 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:55:08,794 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:55:08,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:55:08 BoogieIcfgContainer [2020-10-29 08:55:08,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:55:08,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:55:08,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:55:08,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:55:08,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:54:46" (1/3) ... [2020-10-29 08:55:08,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcdd648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:55:08, skipping insertion in model container [2020-10-29 08:55:08,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:50" (2/3) ... [2020-10-29 08:55:08,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcdd648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:55:08, skipping insertion in model container [2020-10-29 08:55:08,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:55:08" (3/3) ... [2020-10-29 08:55:08,811 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label46.c [2020-10-29 08:55:08,825 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:55:08,832 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:55:08,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:55:08,889 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:55:08,889 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:55:08,890 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:55:08,890 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:55:08,890 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:55:08,890 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:55:08,890 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:55:08,890 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:55:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:55:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 08:55:08,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:55:08,952 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] [2020-10-29 08:55:08,953 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:55:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:55:08,962 INFO L82 PathProgramCache]: Analyzing trace with hash 965166134, now seen corresponding path program 1 times [2020-10-29 08:55:08,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:55:08,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312133711] [2020-10-29 08:55:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:55:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:09,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:09,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 08:55:09,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:55:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-29 08:55:09,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:09,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:09,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:55:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:55:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 08:55:09,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 08:55:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:55:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:10,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:10,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:55:10,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:55:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:55:10,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:10,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:55:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:55:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:55:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:55:10,179 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 08:55:10,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312133711] [2020-10-29 08:55:10,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:55:10,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:55:10,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276948388] [2020-10-29 08:55:10,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:55:10,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:55:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:55:10,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:55:10,212 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-29 08:55:44,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:55:44,723 INFO L93 Difference]: Finished difference Result 5081 states and 9549 transitions. [2020-10-29 08:55:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:55:44,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-29 08:55:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:55:44,774 INFO L225 Difference]: With dead ends: 5081 [2020-10-29 08:55:44,775 INFO L226 Difference]: Without dead ends: 3220 [2020-10-29 08:55:44,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:55:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-10-29 08:55:45,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3195. [2020-10-29 08:55:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3195 states. [2020-10-29 08:55:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 5074 transitions. [2020-10-29 08:55:45,038 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 5074 transitions. Word has length 39 [2020-10-29 08:55:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:55:45,039 INFO L481 AbstractCegarLoop]: Abstraction has 3195 states and 5074 transitions. [2020-10-29 08:55:45,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:55:45,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 5074 transitions. [2020-10-29 08:55:45,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 08:55:45,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:55:45,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:45,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:55:45,050 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:55:45,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:55:45,050 INFO L82 PathProgramCache]: Analyzing trace with hash -741151704, now seen corresponding path program 1 times [2020-10-29 08:55:45,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:55:45,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801076483] [2020-10-29 08:55:45,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:55:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:47,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 08:55:47,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:55:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-10-29 08:55:47,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:47,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:55:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:55:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:55:47,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:55:47,436 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:55:47,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:55:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:47,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:47,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:55:47,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:55:47,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:55:47,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:47,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:55:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:55:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:55:47,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:55:47,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:55:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:47,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:47,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:55:47,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:55:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 08:55:47,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:47,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:55:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:55:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:55:47,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:55:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:55:47,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801076483] [2020-10-29 08:55:47,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:55:47,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:55:47,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635603197] [2020-10-29 08:55:47,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:55:47,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:55:47,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:55:47,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:55:47,886 INFO L87 Difference]: Start difference. First operand 3195 states and 5074 transitions. Second operand 7 states. [2020-10-29 08:56:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:56:29,388 INFO L93 Difference]: Finished difference Result 9445 states and 15088 transitions. [2020-10-29 08:56:29,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:56:29,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-29 08:56:29,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:56:29,449 INFO L225 Difference]: With dead ends: 9445 [2020-10-29 08:56:29,449 INFO L226 Difference]: Without dead ends: 6256 [2020-10-29 08:56:29,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:56:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2020-10-29 08:56:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 6157. [2020-10-29 08:56:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6157 states. [2020-10-29 08:56:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 8748 transitions. [2020-10-29 08:56:29,752 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 8748 transitions. Word has length 110 [2020-10-29 08:56:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:56:29,755 INFO L481 AbstractCegarLoop]: Abstraction has 6157 states and 8748 transitions. [2020-10-29 08:56:29,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:56:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 8748 transitions. [2020-10-29 08:56:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 08:56:29,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:56:29,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:29,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:56:29,778 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:56:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:56:29,780 INFO L82 PathProgramCache]: Analyzing trace with hash -63599264, now seen corresponding path program 1 times [2020-10-29 08:56:29,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:56:29,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220991525] [2020-10-29 08:56:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:56:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:32,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:32,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 08:56:32,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:56:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2376 [2020-10-29 08:56:32,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:32,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:56:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:56:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:56:32,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:56:32,470 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:56:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:56:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:32,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:32,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:56:32,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:56:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:56:32,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:32,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:56:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:56:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:56:32,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:56:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:56:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:32,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:32,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:56:32,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:56:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 08:56:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:32,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:56:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:56:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:56:32,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:56:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:56:33,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220991525] [2020-10-29 08:56:33,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:56:33,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:56:33,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517705871] [2020-10-29 08:56:33,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:56:33,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:56:33,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:56:33,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:56:33,109 INFO L87 Difference]: Start difference. First operand 6157 states and 8748 transitions. Second operand 7 states. [2020-10-29 08:56:33,292 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:57:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:57:36,578 INFO L93 Difference]: Finished difference Result 18735 states and 27121 transitions. [2020-10-29 08:57:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:57:36,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-29 08:57:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:57:36,653 INFO L225 Difference]: With dead ends: 18735 [2020-10-29 08:57:36,653 INFO L226 Difference]: Without dead ends: 12584 [2020-10-29 08:57:36,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:57:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12584 states. [2020-10-29 08:57:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12584 to 12356. [2020-10-29 08:57:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12356 states. [2020-10-29 08:57:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12356 states to 12356 states and 16087 transitions. [2020-10-29 08:57:37,053 INFO L78 Accepts]: Start accepts. Automaton has 12356 states and 16087 transitions. Word has length 140 [2020-10-29 08:57:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:57:37,054 INFO L481 AbstractCegarLoop]: Abstraction has 12356 states and 16087 transitions. [2020-10-29 08:57:37,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:57:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 12356 states and 16087 transitions. [2020-10-29 08:57:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 08:57:37,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:57:37,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:37,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:57:37,057 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:57:37,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:57:37,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1543537392, now seen corresponding path program 1 times [2020-10-29 08:57:37,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:57:37,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311203362] [2020-10-29 08:57:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:57:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 08:57:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:57:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-29 08:57:38,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:38,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:57:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:57:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 08:57:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:57:38,869 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:57:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:57:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:38,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:38,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:57:38,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:57:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:57:38,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:38,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:57:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:57:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:57:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:57:38,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:57:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:39,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:39,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:57:39,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:57:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 08:57:39,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:39,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:57:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:57:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:57:39,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:57:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:57:39,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311203362] [2020-10-29 08:57:39,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:57:39,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:57:39,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827555063] [2020-10-29 08:57:39,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:57:39,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:57:39,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:57:39,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:57:39,330 INFO L87 Difference]: Start difference. First operand 12356 states and 16087 transitions. Second operand 8 states. [2020-10-29 08:57:39,480 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:57:41,039 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 08:57:44,012 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66