/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/Problem13_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:09:03,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:09:03,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:09:03,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:09:03,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:09:03,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:09:03,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:09:03,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:09:03,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:09:03,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:09:03,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:09:03,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:09:03,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:09:03,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:09:03,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:09:03,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:09:03,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:09:03,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:09:03,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:09:03,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:09:03,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:09:03,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:09:03,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:09:03,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:09:03,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:09:03,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:09:03,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:09:03,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:09:03,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:09:03,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:09:03,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:09:03,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:09:03,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:09:03,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:09:03,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:09:03,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:09:03,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:09:03,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:09:03,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:09:03,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:09:03,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:09:03,702 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 07:09:03,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:09:03,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:09:03,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:09:03,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:09:03,742 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:09:03,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:09:03,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:09:03,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:09:03,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:09:03,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:09:03,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:09:03,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:09:03,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:09:03,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:09:03,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:09:03,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:09:03,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:09:03,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:09:03,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:09:03,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:09:03,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:09:03,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:09:03,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:09:03,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:09:03,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:09:03,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:09:03,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:09:03,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:09:03,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:09:03,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:09:04,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:09:04,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:09:04,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:09:04,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:09:04,211 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:09:04,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01.c [2020-10-29 07:09:04,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca64ae041/770e68feade54ebd984fe216bc4b4645/FLAG3aba69b6c [2020-10-29 07:09:05,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:09:05,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label01.c [2020-10-29 07:09:05,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca64ae041/770e68feade54ebd984fe216bc4b4645/FLAG3aba69b6c [2020-10-29 07:09:05,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca64ae041/770e68feade54ebd984fe216bc4b4645 [2020-10-29 07:09:05,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:09:05,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:09:05,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:09:05,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:09:05,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:09:05,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:09:05" (1/1) ... [2020-10-29 07:09:05,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13136ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:05, skipping insertion in model container [2020-10-29 07:09:05,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:09:05" (1/1) ... [2020-10-29 07:09:05,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:09:06,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:09:08,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:09:08,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:09:08,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:09:08,994 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:09:08,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08 WrapperNode [2020-10-29 07:09:08,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:09:08,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:09:08,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:09:08,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:09:09,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (1/1) ... [2020-10-29 07:09:09,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (1/1) ... [2020-10-29 07:09:09,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (1/1) ... [2020-10-29 07:09:09,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (1/1) ... [2020-10-29 07:09:09,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (1/1) ... [2020-10-29 07:09:09,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (1/1) ... [2020-10-29 07:09:09,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (1/1) ... [2020-10-29 07:09:09,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:09:09,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:09:09,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:09:09,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:09:09,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (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 07:09:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:09:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:09:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:09:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:09:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:09:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:09:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:09:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:09:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:09:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:09:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:09:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:09:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:09:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:09:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:09:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:09:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:09:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:09:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:09:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:09:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:09:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:09:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:09:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:09:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:09:20,100 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:09:20,101 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:09:20,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:09:20 BoogieIcfgContainer [2020-10-29 07:09:20,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:09:20,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:09:20,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:09:20,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:09:20,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:09:05" (1/3) ... [2020-10-29 07:09:20,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b358a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:09:20, skipping insertion in model container [2020-10-29 07:09:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:09:08" (2/3) ... [2020-10-29 07:09:20,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b358a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:09:20, skipping insertion in model container [2020-10-29 07:09:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:09:20" (3/3) ... [2020-10-29 07:09:20,117 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label01.c [2020-10-29 07:09:20,133 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:09:20,144 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:09:20,163 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:09:20,224 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:09:20,225 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:09:20,225 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:09:20,225 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:09:20,225 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:09:20,225 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:09:20,226 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:09:20,226 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:09:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:09:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 07:09:20,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:20,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:09:20,299 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:20,311 INFO L82 PathProgramCache]: Analyzing trace with hash 607207682, now seen corresponding path program 1 times [2020-10-29 07:09:20,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:20,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021297447] [2020-10-29 07:09:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:21,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:21,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 07:09:21,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-10-29 07:09:21,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:21,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:21,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:09:21,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:09:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 07:09:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:09:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:21,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:21,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:21,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:21,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:09:21,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:21,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:09:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:21,653 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 07:09:21,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021297447] [2020-10-29 07:09:21,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:09:21,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:09:21,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005094524] [2020-10-29 07:09:21,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:09:21,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:09:21,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:09:21,685 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:09:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:41,397 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-29 07:09:41,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:09:41,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-29 07:09:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:41,439 INFO L225 Difference]: With dead ends: 3235 [2020-10-29 07:09:41,439 INFO L226 Difference]: Without dead ends: 2027 [2020-10-29 07:09:41,451 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 07:09:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-29 07:09:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-29 07:09:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-29 07:09:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-29 07:09:41,639 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 56 [2020-10-29 07:09:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:41,640 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-29 07:09:41,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:09:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-29 07:09:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 07:09:41,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:41,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:09:41,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:09:41,650 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:41,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1280228262, now seen corresponding path program 1 times [2020-10-29 07:09:41,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:41,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128997896] [2020-10-29 07:09:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:41,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:41,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:44,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 07:09:44,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:09:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2821 [2020-10-29 07:09:44,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:44,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:44,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:09:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:09:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:09:44,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:09:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:44,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:09:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:44,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:09:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:44,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:44,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:44,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:44,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:09:44,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:44,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:09:44,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:44,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:09:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:09:45,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128997896] [2020-10-29 07:09:45,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:09:45,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:09:45,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465704717] [2020-10-29 07:09:45,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:45,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:45,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:45,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:45,272 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-29 07:10:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:10,818 INFO L93 Difference]: Finished difference Result 5878 states and 9797 transitions. [2020-10-29 07:10:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:10:10,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-29 07:10:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:10,847 INFO L225 Difference]: With dead ends: 5878 [2020-10-29 07:10:10,848 INFO L226 Difference]: Without dead ends: 3874 [2020-10-29 07:10:10,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:10:10,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2020-10-29 07:10:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3758. [2020-10-29 07:10:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3758 states. [2020-10-29 07:10:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5629 transitions. [2020-10-29 07:10:10,985 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5629 transitions. Word has length 131 [2020-10-29 07:10:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:10,986 INFO L481 AbstractCegarLoop]: Abstraction has 3758 states and 5629 transitions. [2020-10-29 07:10:10,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5629 transitions. [2020-10-29 07:10:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 07:10:10,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:10,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:10:10,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:10:10,991 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:10,991 INFO L82 PathProgramCache]: Analyzing trace with hash 966113054, now seen corresponding path program 1 times [2020-10-29 07:10:10,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:10,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619938997] [2020-10-29 07:10:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:12,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:12,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 07:10:12,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:10:12,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1161 [2020-10-29 07:10:12,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:12,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:10:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:10:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:10:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:10:12,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:12,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:12,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:12,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:12,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:10:12,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:12,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:10:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:12,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:12,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:12,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:10:12,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 07:10:12,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:12,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:10:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:10:12,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619938997] [2020-10-29 07:10:12,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:10:12,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:10:12,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072730976] [2020-10-29 07:10:12,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:10:12,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:12,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:10:12,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:10:12,763 INFO L87 Difference]: Start difference. First operand 3758 states and 5629 transitions. Second operand 7 states. [2020-10-29 07:10:36,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:36,707 INFO L93 Difference]: Finished difference Result 11026 states and 16790 transitions. [2020-10-29 07:10:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:10:36,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-29 07:10:36,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:36,752 INFO L225 Difference]: With dead ends: 11026 [2020-10-29 07:10:36,752 INFO L226 Difference]: Without dead ends: 7274 [2020-10-29 07:10:36,763 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 07:10:36,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2020-10-29 07:10:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7241. [2020-10-29 07:10:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7241 states. [2020-10-29 07:10:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 10483 transitions. [2020-10-29 07:10:36,969 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 10483 transitions. Word has length 145 [2020-10-29 07:10:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:36,969 INFO L481 AbstractCegarLoop]: Abstraction has 7241 states and 10483 transitions. [2020-10-29 07:10:36,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:36,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 10483 transitions. [2020-10-29 07:10:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 07:10:36,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:36,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:10:36,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:10:36,975 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:36,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1456242186, now seen corresponding path program 1 times [2020-10-29 07:10:36,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:36,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006686310] [2020-10-29 07:10:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:38,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:38,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:10:38,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:10:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1862 [2020-10-29 07:10:38,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:38,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:10:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:10:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:10:38,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:39,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:39,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:39,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:39,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:10:39,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:39,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:39,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:10:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:39,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:39,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:10:39,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 07:10:39,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:39,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:10:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:10:39,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006686310] [2020-10-29 07:10:39,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:10:39,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:10:39,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31867797] [2020-10-29 07:10:39,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:10:39,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:39,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:10:39,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:10:39,826 INFO L87 Difference]: Start difference. First operand 7241 states and 10483 transitions. Second operand 7 states. [2020-10-29 07:11:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:11:04,923 INFO L93 Difference]: Finished difference Result 15684 states and 22634 transitions. [2020-10-29 07:11:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:11:04,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-29 07:11:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:11:04,972 INFO L225 Difference]: With dead ends: 15684 [2020-10-29 07:11:04,972 INFO L226 Difference]: Without dead ends: 8449 [2020-10-29 07:11:04,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:11:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8449 states. [2020-10-29 07:11:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8449 to 8162. [2020-10-29 07:11:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8162 states. [2020-10-29 07:11:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 11538 transitions. [2020-10-29 07:11:05,232 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 11538 transitions. Word has length 171 [2020-10-29 07:11:05,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:11:05,233 INFO L481 AbstractCegarLoop]: Abstraction has 8162 states and 11538 transitions. [2020-10-29 07:11:05,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:11:05,233 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 11538 transitions. [2020-10-29 07:11:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 07:11:05,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:11:05,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:11:05,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:11:05,237 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:11:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:11:05,238 INFO L82 PathProgramCache]: Analyzing trace with hash -57367577, now seen corresponding path program 1 times [2020-10-29 07:11:05,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:11:05,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602471743] [2020-10-29 07:11:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:11:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:05,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:05,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-29 07:11:05,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 07:11:05,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:05,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 07:11:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 07:11:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:05,850 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:11:05,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:05,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:05,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:05,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:05,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:11:05,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:05,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:11:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:11:05,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:11:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:11:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:06,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:06,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:11:06,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 07:11:06,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:06,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:06,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:11:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:11:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:11:06,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602471743] [2020-10-29 07:11:06,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:11:06,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:11:06,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898097222] [2020-10-29 07:11:06,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:11:06,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:06,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:11:06,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:11:06,249 INFO L87 Difference]: Start difference. First operand 8162 states and 11538 transitions. Second operand 5 states. [2020-10-29 07:11:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:11:36,304 INFO L93 Difference]: Finished difference Result 20551 states and 30547 transitions. [2020-10-29 07:11:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:11:36,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-29 07:11:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:11:36,371 INFO L225 Difference]: With dead ends: 20551 [2020-10-29 07:11:36,371 INFO L226 Difference]: Without dead ends: 13198 [2020-10-29 07:11:36,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:11:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13198 states. [2020-10-29 07:11:36,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13198 to 13103. [2020-10-29 07:11:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13103 states. [2020-10-29 07:11:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 18126 transitions. [2020-10-29 07:11:36,842 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 18126 transitions. Word has length 185 [2020-10-29 07:11:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:11:36,843 INFO L481 AbstractCegarLoop]: Abstraction has 13103 states and 18126 transitions. [2020-10-29 07:11:36,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:11:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 18126 transitions. [2020-10-29 07:11:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-29 07:11:36,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:11:36,850 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:11:36,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:11:36,850 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:11:36,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:11:36,851 INFO L82 PathProgramCache]: Analyzing trace with hash 613811753, now seen corresponding path program 1 times [2020-10-29 07:11:36,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:11:36,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918521445] [2020-10-29 07:11:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:11:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:36,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:40,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:40,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:11:40,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:11:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3479 [2020-10-29 07:11:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:40,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:11:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:11:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-29 07:11:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:40,581 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:11:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:40,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:40,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:40,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:40,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:40,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:11:40,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:40,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:11:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:11:40,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:11:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:41,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:41,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:11:41,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:11:41,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-29 07:11:41,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:41,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:41,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:41,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:41,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:11:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:41,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:11:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:41,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:41,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:11:41,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:41,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 07:11:41,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:41,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:11:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:11:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:41,502 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:11:41,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918521445] [2020-10-29 07:11:41,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:11:41,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:11:41,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116113171] [2020-10-29 07:11:41,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:11:41,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:41,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:11:41,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:11:41,505 INFO L87 Difference]: Start difference. First operand 13103 states and 18126 transitions. Second operand 7 states. [2020-10-29 07:11:41,650 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:11:44,773 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:12:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:11,503 INFO L93 Difference]: Finished difference Result 35939 states and 52910 transitions. [2020-10-29 07:12:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:12:11,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-29 07:12:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:11,630 INFO L225 Difference]: With dead ends: 35939 [2020-10-29 07:12:11,630 INFO L226 Difference]: Without dead ends: 23645 [2020-10-29 07:12:11,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:12:11,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23645 states. [2020-10-29 07:12:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23645 to 23444. [2020-10-29 07:12:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23444 states. [2020-10-29 07:12:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23444 states to 23444 states and 31432 transitions. [2020-10-29 07:12:12,449 INFO L78 Accepts]: Start accepts. Automaton has 23444 states and 31432 transitions. Word has length 261 [2020-10-29 07:12:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:12:12,449 INFO L481 AbstractCegarLoop]: Abstraction has 23444 states and 31432 transitions. [2020-10-29 07:12:12,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:12:12,450 INFO L276 IsEmpty]: Start isEmpty. Operand 23444 states and 31432 transitions. [2020-10-29 07:12:12,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 07:12:12,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:12,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:12:12,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:12:12,457 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:12,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1742195731, now seen corresponding path program 1 times [2020-10-29 07:12:12,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:12,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160349805] [2020-10-29 07:12:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:14,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 07:12:14,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:12:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-10-29 07:12:14,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:14,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:12:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:12:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:12:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:14,640 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:12:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:12:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:14,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:14,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:14,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:12:14,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:14,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:12:14,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:14,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:12:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:12:14,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:12:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:14,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:14,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:12:14,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:14,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:12:14,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:14,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:12:14,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:14,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:12:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:15,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:15,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:12:15,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 07:12:15,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:15,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:12:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:12:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:12:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:12:15,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160349805] [2020-10-29 07:12:15,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:12:15,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:12:15,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959817926] [2020-10-29 07:12:15,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:12:15,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:12:15,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:12:15,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:12:15,457 INFO L87 Difference]: Start difference. First operand 23444 states and 31432 transitions. Second operand 7 states. [2020-10-29 07:12:18,763 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:12:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:51,141 INFO L93 Difference]: Finished difference Result 62044 states and 89997 transitions. [2020-10-29 07:12:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:12:51,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-29 07:12:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:51,303 INFO L225 Difference]: With dead ends: 62044 [2020-10-29 07:12:51,303 INFO L226 Difference]: Without dead ends: 39409 [2020-10-29 07:12:51,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:12:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39409 states. [2020-10-29 07:12:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39409 to 39168. [2020-10-29 07:12:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39168 states. [2020-10-29 07:12:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39168 states to 39168 states and 52113 transitions. [2020-10-29 07:12:52,576 INFO L78 Accepts]: Start accepts. Automaton has 39168 states and 52113 transitions. Word has length 271 [2020-10-29 07:12:52,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:12:52,577 INFO L481 AbstractCegarLoop]: Abstraction has 39168 states and 52113 transitions. [2020-10-29 07:12:52,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:12:52,577 INFO L276 IsEmpty]: Start isEmpty. Operand 39168 states and 52113 transitions. [2020-10-29 07:12:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-29 07:12:52,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:52,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:12:52,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:12:52,583 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:52,583 INFO L82 PathProgramCache]: Analyzing trace with hash -98007919, now seen corresponding path program 1 times [2020-10-29 07:12:52,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:52,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325527468] [2020-10-29 07:12:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:56,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:56,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-29 07:12:56,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:12:56,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3595 [2020-10-29 07:12:56,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:56,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:12:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:12:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 283 [2020-10-29 07:12:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:56,536 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:12:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:12:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:56,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:56,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:12:56,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:12:56,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:56,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:12:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:56,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:12:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:56,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:56,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:12:56,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:12:56,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-29 07:12:56,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:56,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:56,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:56,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:12:56,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:12:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking...