/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.2 --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:37:54,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:37:54,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:37:54,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:37:54,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:37:54,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:37:54,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:37:54,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:37:54,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:37:54,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:37:54,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:37:54,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:37:54,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:37:54,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:37:54,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:37:54,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:37:54,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:37:54,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:37:54,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:37:54,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:37:54,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:37:54,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:37:54,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:37:54,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:37:54,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:37:54,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:37:54,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:37:54,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:37:54,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:37:54,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:37:54,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:37:54,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:37:54,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:37:54,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:37:54,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:37:54,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:37:54,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:37:54,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:37:54,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:37:54,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:37:54,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:37:54,174 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 [2020-10-14 21:37:54,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:37:54,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:37:54,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:37:54,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:37:54,199 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:37:54,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:37:54,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:37:54,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:37:54,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:37:54,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:37:54,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:37:54,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:37:54,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:37:54,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:37:54,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:37:54,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:37:54,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:37:54,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:37:54,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:37:54,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:37:54,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:37:54,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:37:54,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:37:54,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:37:54,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:37:54,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:37:54,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:37:54,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:37:54,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:37:54,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:37:54,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:37:54,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:37:54,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:37:54,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:37:54,581 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:37:54,583 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2020-10-14 21:37:54,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7066f008e/aaa954f057394c0b9b122c33b3665e97/FLAGfbbf86ed0 [2020-10-14 21:37:55,505 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:37:55,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2020-10-14 21:37:55,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7066f008e/aaa954f057394c0b9b122c33b3665e97/FLAGfbbf86ed0 [2020-10-14 21:37:56,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7066f008e/aaa954f057394c0b9b122c33b3665e97 [2020-10-14 21:37:56,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:37:56,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:37:56,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:56,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:37:56,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:37:56,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:56" (1/1) ... [2020-10-14 21:37:56,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d82a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:56, skipping insertion in model container [2020-10-14 21:37:56,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:56" (1/1) ... [2020-10-14 21:37:56,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:37:56,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:37:57,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:57,889 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:37:58,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:58,623 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:37:58,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58 WrapperNode [2020-10-14 21:37:58,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:58,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:37:58,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:37:58,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:37:58,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (1/1) ... [2020-10-14 21:37:58,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (1/1) ... [2020-10-14 21:37:58,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (1/1) ... [2020-10-14 21:37:58,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (1/1) ... [2020-10-14 21:37:58,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (1/1) ... [2020-10-14 21:37:58,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (1/1) ... [2020-10-14 21:37:59,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (1/1) ... [2020-10-14 21:37:59,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:37:59,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:37:59,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:37:59,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:37:59,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (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 [2020-10-14 21:37:59,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:37:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:37:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:37:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:37:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:37:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:37:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:37:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:37:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:37:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:37:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:37:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:37:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:37:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:37:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:37:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:37:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:38:10,703 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:38:10,703 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:38:10,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:38:10 BoogieIcfgContainer [2020-10-14 21:38:10,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:38:10,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:38:10,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:38:10,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:38:10,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:37:56" (1/3) ... [2020-10-14 21:38:10,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da0bdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:38:10, skipping insertion in model container [2020-10-14 21:38:10,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:58" (2/3) ... [2020-10-14 21:38:10,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da0bdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:38:10, skipping insertion in model container [2020-10-14 21:38:10,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:38:10" (3/3) ... [2020-10-14 21:38:10,734 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2020-10-14 21:38:10,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:38:10,751 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:38:10,762 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:38:10,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:38:10,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:38:10,792 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:38:10,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:38:10,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:38:10,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:38:10,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:38:10,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:38:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:38:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 21:38:10,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:10,848 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] [2020-10-14 21:38:10,849 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:10,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1177685569, now seen corresponding path program 1 times [2020-10-14 21:38:10,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:10,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912133642] [2020-10-14 21:38:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:11,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:11,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 21:38:11,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 21:38:11,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:11,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 21:38:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:38:11,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:11,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:11,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:11,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:38:11,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:11,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:11,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912133642] [2020-10-14 21:38:11,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:11,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:38:11,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166572420] [2020-10-14 21:38:11,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:38:11,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:11,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:38:11,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:38:11,657 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 21:38:31,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:31,694 INFO L93 Difference]: Finished difference Result 4150 states and 7721 transitions. [2020-10-14 21:38:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:38:31,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-14 21:38:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:31,755 INFO L225 Difference]: With dead ends: 4150 [2020-10-14 21:38:31,756 INFO L226 Difference]: Without dead ends: 2933 [2020-10-14 21:38:31,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-10-14 21:38:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 2812. [2020-10-14 21:38:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2020-10-14 21:38:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4742 transitions. [2020-10-14 21:38:31,993 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4742 transitions. Word has length 52 [2020-10-14 21:38:31,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:31,994 INFO L479 AbstractCegarLoop]: Abstraction has 2812 states and 4742 transitions. [2020-10-14 21:38:31,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:38:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4742 transitions. [2020-10-14 21:38:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 21:38:32,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:32,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:38:32,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:38:32,002 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:32,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1651499399, now seen corresponding path program 1 times [2020-10-14 21:38:32,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:32,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413464491] [2020-10-14 21:38:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:33,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:33,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 21:38:33,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:33,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-10-14 21:38:33,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:33,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:38:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:38:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:33,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:33,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:33,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:33,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:38:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:33,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:33,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:33,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:33,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:38:33,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:33,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 21:38:33,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:33,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:33,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:38:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:38:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:33,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413464491] [2020-10-14 21:38:33,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:33,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:33,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623309760] [2020-10-14 21:38:33,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:33,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:33,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:33,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:33,995 INFO L87 Difference]: Start difference. First operand 2812 states and 4742 transitions. Second operand 7 states. [2020-10-14 21:38:56,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:56,290 INFO L93 Difference]: Finished difference Result 8412 states and 14329 transitions. [2020-10-14 21:38:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:38:56,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-14 21:38:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:56,326 INFO L225 Difference]: With dead ends: 8412 [2020-10-14 21:38:56,326 INFO L226 Difference]: Without dead ends: 5606 [2020-10-14 21:38:56,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:38:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2020-10-14 21:38:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5492. [2020-10-14 21:38:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5492 states. [2020-10-14 21:38:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 8514 transitions. [2020-10-14 21:38:56,507 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 8514 transitions. Word has length 137 [2020-10-14 21:38:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:56,510 INFO L479 AbstractCegarLoop]: Abstraction has 5492 states and 8514 transitions. [2020-10-14 21:38:56,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 8514 transitions. [2020-10-14 21:38:56,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 21:38:56,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:56,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:38:56,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:38:56,524 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:56,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1315380295, now seen corresponding path program 1 times [2020-10-14 21:38:56,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:56,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860604011] [2020-10-14 21:38:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:57,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:57,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 21:38:57,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:57,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 970 [2020-10-14 21:38:57,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:57,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:57,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 21:38:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:57,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:57,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:57,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:57,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:57,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:57,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:38:57,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:57,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:57,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:58,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:58,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:38:58,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 21:38:58,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:58,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 21:38:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:58,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860604011] [2020-10-14 21:38:58,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:58,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:58,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943004430] [2020-10-14 21:38:58,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:58,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:58,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:58,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:58,127 INFO L87 Difference]: Start difference. First operand 5492 states and 8514 transitions. Second operand 7 states. [2020-10-14 21:39:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:22,151 INFO L93 Difference]: Finished difference Result 13773 states and 22343 transitions. [2020-10-14 21:39:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:39:22,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-10-14 21:39:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:22,198 INFO L225 Difference]: With dead ends: 13773 [2020-10-14 21:39:22,199 INFO L226 Difference]: Without dead ends: 8287 [2020-10-14 21:39:22,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:39:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2020-10-14 21:39:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 8080. [2020-10-14 21:39:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8080 states. [2020-10-14 21:39:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8080 states to 8080 states and 11265 transitions. [2020-10-14 21:39:22,464 INFO L78 Accepts]: Start accepts. Automaton has 8080 states and 11265 transitions. Word has length 153 [2020-10-14 21:39:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:22,468 INFO L479 AbstractCegarLoop]: Abstraction has 8080 states and 11265 transitions. [2020-10-14 21:39:22,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8080 states and 11265 transitions. [2020-10-14 21:39:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 21:39:22,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:22,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:39:22,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:39:22,477 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:22,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1874242283, now seen corresponding path program 1 times [2020-10-14 21:39:22,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:22,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841840796] [2020-10-14 21:39:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:24,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:24,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 21:39:24,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:24,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-14 21:39:24,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:24,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:39:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:39:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:39:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:39:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:24,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:24,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:24,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:39:24,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:24,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:39:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:24,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:24,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:24,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:39:24,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:24,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 21:39:24,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:24,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:39:24,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:39:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:39:24,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841840796] [2020-10-14 21:39:24,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:39:24,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:39:24,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261209324] [2020-10-14 21:39:24,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:24,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:24,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:24,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:24,723 INFO L87 Difference]: Start difference. First operand 8080 states and 11265 transitions. Second operand 7 states. [2020-10-14 21:39:47,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:47,129 INFO L93 Difference]: Finished difference Result 16508 states and 23113 transitions. [2020-10-14 21:39:47,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:39:47,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-10-14 21:39:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:47,189 INFO L225 Difference]: With dead ends: 16508 [2020-10-14 21:39:47,189 INFO L226 Difference]: Without dead ends: 8434 [2020-10-14 21:39:47,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:39:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8434 states. [2020-10-14 21:39:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8434 to 8130. [2020-10-14 21:39:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8130 states. [2020-10-14 21:39:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 11302 transitions. [2020-10-14 21:39:47,435 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 11302 transitions. Word has length 167 [2020-10-14 21:39:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:47,437 INFO L479 AbstractCegarLoop]: Abstraction has 8130 states and 11302 transitions. [2020-10-14 21:39:47,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 11302 transitions. [2020-10-14 21:39:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 21:39:47,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:47,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:39:47,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:39:47,442 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash 717409192, now seen corresponding path program 1 times [2020-10-14 21:39:47,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:47,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786110546] [2020-10-14 21:39:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:47,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:47,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:39:47,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-14 21:39:47,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:47,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:39:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 21:39:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:47,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:47,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:47,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:47,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:47,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:47,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:39:47,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:47,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:39:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:39:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:48,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:48,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:48,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:39:48,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 21:39:48,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:48,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:39:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:39:48,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786110546] [2020-10-14 21:39:48,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:48,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:39:48,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373763925] [2020-10-14 21:39:48,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:39:48,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:48,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:39:48,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:39:48,450 INFO L87 Difference]: Start difference. First operand 8130 states and 11302 transitions. Second operand 5 states. [2020-10-14 21:40:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:05,331 INFO L93 Difference]: Finished difference Result 15320 states and 21669 transitions. [2020-10-14 21:40:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:40:05,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 21:40:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:05,362 INFO L225 Difference]: With dead ends: 15320 [2020-10-14 21:40:05,362 INFO L226 Difference]: Without dead ends: 8002 [2020-10-14 21:40:05,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:40:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2020-10-14 21:40:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7964. [2020-10-14 21:40:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7964 states. [2020-10-14 21:40:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7964 states to 7964 states and 10087 transitions. [2020-10-14 21:40:05,539 INFO L78 Accepts]: Start accepts. Automaton has 7964 states and 10087 transitions. Word has length 181 [2020-10-14 21:40:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:05,539 INFO L479 AbstractCegarLoop]: Abstraction has 7964 states and 10087 transitions. [2020-10-14 21:40:05,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:40:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 7964 states and 10087 transitions. [2020-10-14 21:40:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 21:40:05,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:05,545 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, 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] [2020-10-14 21:40:05,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:40:05,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:05,545 INFO L82 PathProgramCache]: Analyzing trace with hash -324697538, now seen corresponding path program 1 times [2020-10-14 21:40:05,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:05,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771721551] [2020-10-14 21:40:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:10,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:10,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 21:40:10,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:40:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4995 [2020-10-14 21:40:10,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:10,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:40:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:40:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:40:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:10,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:10,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:10,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:40:10,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:10,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:40:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:11,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:11,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:40:11,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:40:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-14 21:40:11,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:11,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:40:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:40:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:11,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:11,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:40:11,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 21:40:11,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:11,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:40:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:40:11,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:40:11,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771721551] [2020-10-14 21:40:11,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:11,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:40:11,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114874978] [2020-10-14 21:40:11,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:40:11,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:11,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:40:11,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:40:11,491 INFO L87 Difference]: Start difference. First operand 7964 states and 10087 transitions. Second operand 7 states. [2020-10-14 21:40:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:44,762 INFO L93 Difference]: Finished difference Result 20551 states and 27458 transitions. [2020-10-14 21:40:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:40:44,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-14 21:40:44,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:44,818 INFO L225 Difference]: With dead ends: 20551 [2020-10-14 21:40:44,818 INFO L226 Difference]: Without dead ends: 12591 [2020-10-14 21:40:44,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:40:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12591 states. [2020-10-14 21:40:45,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12591 to 12431. [2020-10-14 21:40:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12431 states. [2020-10-14 21:40:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12431 states to 12431 states and 15520 transitions. [2020-10-14 21:40:45,127 INFO L78 Accepts]: Start accepts. Automaton has 12431 states and 15520 transitions. Word has length 250 [2020-10-14 21:40:45,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:45,128 INFO L479 AbstractCegarLoop]: Abstraction has 12431 states and 15520 transitions. [2020-10-14 21:40:45,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:40:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand 12431 states and 15520 transitions. [2020-10-14 21:40:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 21:40:45,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:45,135 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:40:45,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:40:45,135 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:45,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2093331650, now seen corresponding path program 1 times [2020-10-14 21:40:45,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:45,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42213711] [2020-10-14 21:40:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:45,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:46,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:48,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 21:40:48,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:40:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3419 [2020-10-14 21:40:48,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:48,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:40:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:40:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-14 21:40:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:48,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:48,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:48,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:48,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:40:48,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:48,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:40:48,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:49,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:49,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:49,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:40:49,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:40:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-14 21:40:49,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:49,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:40:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:40:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:49,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:49,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:40:49,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:49,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 21:40:49,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:49,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:40:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:40:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:40:49,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42213711] [2020-10-14 21:40:49,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:49,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:40:49,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783493369] [2020-10-14 21:40:49,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:40:49,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:49,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:40:49,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:40:49,823 INFO L87 Difference]: Start difference. First operand 12431 states and 15520 transitions. Second operand 8 states. [2020-10-14 21:41:38,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:41:38,997 INFO L93 Difference]: Finished difference Result 44232 states and 60465 transitions. [2020-10-14 21:41:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:41:39,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 266 [2020-10-14 21:41:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:41:39,139 INFO L225 Difference]: With dead ends: 44232 [2020-10-14 21:41:39,139 INFO L226 Difference]: Without dead ends: 32616 [2020-10-14 21:41:39,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:41:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32616 states. [2020-10-14 21:41:39,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32616 to 31576. [2020-10-14 21:41:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31576 states. [2020-10-14 21:41:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31576 states to 31576 states and 40953 transitions. [2020-10-14 21:41:39,832 INFO L78 Accepts]: Start accepts. Automaton has 31576 states and 40953 transitions. Word has length 266 [2020-10-14 21:41:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:41:39,832 INFO L479 AbstractCegarLoop]: Abstraction has 31576 states and 40953 transitions. [2020-10-14 21:41:39,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:41:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 31576 states and 40953 transitions. [2020-10-14 21:41:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 21:41:39,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:41:39,839 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:41:39,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:41:39,839 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:41:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:41:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash -244331159, now seen corresponding path program 1 times [2020-10-14 21:41:39,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:41:39,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139854935] [2020-10-14 21:41:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:41:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:41,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:42,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:42,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 21:41:42,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:41:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-10-14 21:41:42,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:42,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:41:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:41:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:41:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:42,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:41:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:42,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:42,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:41:42,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:42,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:41:42,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:42,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:41:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:41:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:41:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:41:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:42,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:42,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:41:42,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:42,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:41:42,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:42,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:41:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:41:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:41:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:41:42,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:41:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:43,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:43,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:41:43,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:41:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:43,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:41:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:41:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:41:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:41:43,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139854935] [2020-10-14 21:41:43,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:41:43,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:41:43,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984894820] [2020-10-14 21:41:43,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:41:43,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:41:43,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:41:43,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:41:43,240 INFO L87 Difference]: Start difference. First operand 31576 states and 40953 transitions. Second operand 7 states.