/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=BIGGEST --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/Problem05_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:46:24,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:46:24,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:46:24,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:46:24,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:46:24,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:46:24,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:46:24,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:46:24,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:46:24,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:46:24,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:46:24,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:46:24,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:46:24,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:46:24,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:46:24,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:46:24,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:46:24,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:46:24,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:46:24,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:46:24,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:46:24,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:46:24,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:46:24,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:46:24,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:46:24,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:46:24,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:46:24,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:46:24,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:46:24,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:46:24,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:46:24,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:46:24,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:46:24,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:46:24,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:46:24,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:46:24,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:46:24,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:46:24,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:46:24,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:46:24,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:46:24,198 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 [2020-10-12 11:46:24,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:46:24,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:46:24,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:46:24,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:46:24,221 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:46:24,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:46:24,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:46:24,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:46:24,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:46:24,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:46:24,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:46:24,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:46:24,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:46:24,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:46:24,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:46:24,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:46:24,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:46:24,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:46:24,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:46:24,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:46:24,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:46:24,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:46:24,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:46:24,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:46:24,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:46:24,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:46:24,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:46:24,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:46:24,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:46:24,226 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:46:24,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:46:24,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:46:24,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:46:24,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:46:24,542 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:46:24,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label05.c [2020-10-12 11:46:24,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ec631904/7b615388005442278bc25c83359e0de4/FLAGa4a8ba037 [2020-10-12 11:46:25,546 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:46:25,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label05.c [2020-10-12 11:46:25,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ec631904/7b615388005442278bc25c83359e0de4/FLAGa4a8ba037 [2020-10-12 11:46:25,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ec631904/7b615388005442278bc25c83359e0de4 [2020-10-12 11:46:25,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:46:25,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:46:25,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:46:25,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:46:25,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:46:25,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:46:25" (1/1) ... [2020-10-12 11:46:25,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f12d333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:25, skipping insertion in model container [2020-10-12 11:46:25,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:46:25" (1/1) ... [2020-10-12 11:46:25,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:46:26,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:46:28,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:46:28,484 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:46:29,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:46:29,637 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:46:29,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29 WrapperNode [2020-10-12 11:46:29,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:46:29,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:46:29,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:46:29,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:46:29,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (1/1) ... [2020-10-12 11:46:29,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (1/1) ... [2020-10-12 11:46:29,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (1/1) ... [2020-10-12 11:46:29,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (1/1) ... [2020-10-12 11:46:29,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (1/1) ... [2020-10-12 11:46:30,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (1/1) ... [2020-10-12 11:46:30,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (1/1) ... [2020-10-12 11:46:30,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:46:30,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:46:30,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:46:30,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:46:30,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (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 [2020-10-12 11:46:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:46:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:46:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:46:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:46:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:46:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:46:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:46:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:46:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:46:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:46:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:46:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:46:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:46:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:46:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:46:30,183 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:46:30,183 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:46:30,184 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:46:30,184 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:46:30,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:46:30,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:46:30,184 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:46:30,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:46:30,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:46:30,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:46:38,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:46:38,239 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:46:38,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:46:38 BoogieIcfgContainer [2020-10-12 11:46:38,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:46:38,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:46:38,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:46:38,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:46:38,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:46:25" (1/3) ... [2020-10-12 11:46:38,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79975952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:46:38, skipping insertion in model container [2020-10-12 11:46:38,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:46:29" (2/3) ... [2020-10-12 11:46:38,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79975952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:46:38, skipping insertion in model container [2020-10-12 11:46:38,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:46:38" (3/3) ... [2020-10-12 11:46:38,262 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label05.c [2020-10-12 11:46:38,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:46:38,282 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:46:38,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:46:38,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:46:38,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:46:38,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:46:38,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:46:38,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:46:38,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:46:38,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:46:38,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:46:38,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:46:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-12 11:46:38,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:46:38,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:46:38,479 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:46:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:46:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1758405248, now seen corresponding path program 1 times [2020-10-12 11:46:38,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:46:38,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708188479] [2020-10-12 11:46:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:46:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:44,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:44,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1729 [2020-10-12 11:46:44,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5222 [2020-10-12 11:46:44,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:46:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:46:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1723 [2020-10-12 11:46:44,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:46:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:46:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:46,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:46:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:46:46,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:46:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:46:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:46:48,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708188479] [2020-10-12 11:46:48,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:46:48,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 11:46:48,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75395420] [2020-10-12 11:46:48,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:46:48,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:46:48,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:46:48,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:46:48,325 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-12 11:47:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:47:06,485 INFO L93 Difference]: Finished difference Result 6310 states and 11850 transitions. [2020-10-12 11:47:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:47:06,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1707 [2020-10-12 11:47:06,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:47:06,544 INFO L225 Difference]: With dead ends: 6310 [2020-10-12 11:47:06,544 INFO L226 Difference]: Without dead ends: 4024 [2020-10-12 11:47:06,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:47:06,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-12 11:47:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997. [2020-10-12 11:47:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-12 11:47:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions. [2020-10-12 11:47:06,769 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1707 [2020-10-12 11:47:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:47:06,773 INFO L479 AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions. [2020-10-12 11:47:06,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:47:06,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions. [2020-10-12 11:47:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2020-10-12 11:47:06,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:47:06,876 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:47:06,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:47:06,877 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:47:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:47:06,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1296410027, now seen corresponding path program 1 times [2020-10-12 11:47:06,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:47:06,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410427002] [2020-10-12 11:47:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:47:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:07,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:09,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:12,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:12,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1740 [2020-10-12 11:47:12,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:47:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 11:47:12,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:47:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 11:47:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1720 [2020-10-12 11:47:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 11:47:14,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:47:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:14,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:14,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:14,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:47:14,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:47:14,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:47:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:47:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:14,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:47:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:14,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:14,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:47:14,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:14,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:47:14,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:47:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 11:47:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:47:16,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410427002] [2020-10-12 11:47:16,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:47:16,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:47:16,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124168488] [2020-10-12 11:47:16,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:47:16,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:47:16,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:47:16,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:47:16,849 INFO L87 Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 5 states. [2020-10-12 11:47:36,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:47:36,031 INFO L93 Difference]: Finished difference Result 11640 states and 18921 transitions. [2020-10-12 11:47:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:47:36,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1716 [2020-10-12 11:47:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:47:36,081 INFO L225 Difference]: With dead ends: 11640 [2020-10-12 11:47:36,081 INFO L226 Difference]: Without dead ends: 7649 [2020-10-12 11:47:36,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:47:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2020-10-12 11:47:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7571. [2020-10-12 11:47:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7571 states. [2020-10-12 11:47:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 10961 transitions. [2020-10-12 11:47:36,326 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 10961 transitions. Word has length 1716 [2020-10-12 11:47:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:47:36,329 INFO L479 AbstractCegarLoop]: Abstraction has 7571 states and 10961 transitions. [2020-10-12 11:47:36,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:47:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 10961 transitions. [2020-10-12 11:47:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2020-10-12 11:47:36,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:47:36,488 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:47:36,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:47:36,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:47:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:47:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash -491988913, now seen corresponding path program 1 times [2020-10-12 11:47:36,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:47:36,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222706082] [2020-10-12 11:47:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:47:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:37,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:41,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:41,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-12 11:47:41,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:47:41,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-12 11:47:41,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:41,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:47:41,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:47:41,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1720 [2020-10-12 11:47:41,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:43,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:47:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:43,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:43,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:47:43,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:47:43,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:47:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:47:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:47:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:47:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:43,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:43,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:47:43,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:47:43,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:47:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 11:47:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:47:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:47:45,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222706082] [2020-10-12 11:47:45,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:47:45,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:47:45,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322475465] [2020-10-12 11:47:45,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:47:45,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:47:45,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:47:45,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:47:45,465 INFO L87 Difference]: Start difference. First operand 7571 states and 10961 transitions. Second operand 5 states. [2020-10-12 11:48:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:48:06,098 INFO L93 Difference]: Finished difference Result 18762 states and 28067 transitions. [2020-10-12 11:48:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:48:06,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1718 [2020-10-12 11:48:06,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:48:06,154 INFO L225 Difference]: With dead ends: 18762 [2020-10-12 11:48:06,155 INFO L226 Difference]: Without dead ends: 11197 [2020-10-12 11:48:06,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:48:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11197 states. [2020-10-12 11:48:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11197 to 11126. [2020-10-12 11:48:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11126 states. [2020-10-12 11:48:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11126 states to 11126 states and 15542 transitions. [2020-10-12 11:48:06,445 INFO L78 Accepts]: Start accepts. Automaton has 11126 states and 15542 transitions. Word has length 1718 [2020-10-12 11:48:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:48:06,448 INFO L479 AbstractCegarLoop]: Abstraction has 11126 states and 15542 transitions. [2020-10-12 11:48:06,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:48:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 11126 states and 15542 transitions. [2020-10-12 11:48:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1738 [2020-10-12 11:48:06,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:48:06,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:48:06,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:48:06,520 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:48:06,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:48:06,521 INFO L82 PathProgramCache]: Analyzing trace with hash 733508191, now seen corresponding path program 1 times [2020-10-12 11:48:06,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:48:06,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974759783] [2020-10-12 11:48:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:48:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:11,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:11,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1763 [2020-10-12 11:48:11,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:48:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5317 [2020-10-12 11:48:11,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:48:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:48:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:48:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:48:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:48:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:12,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:12,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:48:12,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:48:12,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:48:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:48:12,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:48:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:12,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:12,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:48:12,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:48:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:48:12,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:48:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:48:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:48:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:12,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 11:48:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:12,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:12,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:12,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:48:12,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 11:48:12,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:48:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:48:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:48:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:48:13,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974759783] [2020-10-12 11:48:13,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:48:13,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:48:13,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938779245] [2020-10-12 11:48:13,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:48:13,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:48:13,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:48:13,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:48:13,826 INFO L87 Difference]: Start difference. First operand 11126 states and 15542 transitions. Second operand 8 states. [2020-10-12 11:48:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:48:39,262 INFO L93 Difference]: Finished difference Result 33010 states and 47143 transitions. [2020-10-12 11:48:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:48:39,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1737 [2020-10-12 11:48:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:48:39,354 INFO L225 Difference]: With dead ends: 33010 [2020-10-12 11:48:39,354 INFO L226 Difference]: Without dead ends: 21890 [2020-10-12 11:48:39,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:48:39,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21890 states. [2020-10-12 11:48:39,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21890 to 21848. [2020-10-12 11:48:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21848 states. [2020-10-12 11:48:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21848 states to 21848 states and 29955 transitions. [2020-10-12 11:48:39,857 INFO L78 Accepts]: Start accepts. Automaton has 21848 states and 29955 transitions. Word has length 1737 [2020-10-12 11:48:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:48:39,858 INFO L479 AbstractCegarLoop]: Abstraction has 21848 states and 29955 transitions. [2020-10-12 11:48:39,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:48:39,858 INFO L276 IsEmpty]: Start isEmpty. Operand 21848 states and 29955 transitions. [2020-10-12 11:48:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1745 [2020-10-12 11:48:39,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:48:39,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:48:39,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:48:39,939 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:48:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:48:39,940 INFO L82 PathProgramCache]: Analyzing trace with hash -721849836, now seen corresponding path program 1 times [2020-10-12 11:48:39,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:48:39,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778833512] [2020-10-12 11:48:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:48:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:40,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:45,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1770 [2020-10-12 11:48:45,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:48:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 11:48:45,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 11:48:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 11:48:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-12 11:48:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:47,473 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-10-12 11:48:49,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:48:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:49,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:49,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:48:49,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:48:49,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:48:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:49,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:49,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:49,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:48:49,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:49,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:48:49,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:49,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:48:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:49,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:49,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:48:49,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:49,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:48:49,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 11:48:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:48:49,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:49:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:49:06,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778833512] [2020-10-12 11:49:06,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:49:06,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 11:49:06,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949151436] [2020-10-12 11:49:06,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 11:49:06,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:49:06,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 11:49:06,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2020-10-12 11:49:06,917 INFO L87 Difference]: Start difference. First operand 21848 states and 29955 transitions. Second operand 25 states. [2020-10-12 11:49:07,591 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-12 11:49:07,830 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-12 11:49:11,958 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-12 11:49:12,828 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-12 11:49:14,402 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-12 11:49:14,643 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-12 11:49:21,580 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-12 11:49:21,805 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-12 11:49:28,375 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-12 11:49:28,578 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-12 11:49:31,028 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-12 11:49:35,217 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-12 11:49:35,424 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-12 11:49:38,245 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-12 11:49:41,994 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-12 11:49:42,701 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-12 11:49:42,891 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-12 11:49:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:49:54,373 INFO L93 Difference]: Finished difference Result 50228 states and 70165 transitions. [2020-10-12 11:49:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 11:49:54,375 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1744 [2020-10-12 11:49:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:49:54,485 INFO L225 Difference]: With dead ends: 50228 [2020-10-12 11:49:54,486 INFO L226 Difference]: Without dead ends: 28386 [2020-10-12 11:49:54,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 11:49:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28386 states. [2020-10-12 11:49:55,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28386 to 28382. [2020-10-12 11:49:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28382 states. [2020-10-12 11:49:55,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28382 states to 28382 states and 37128 transitions. [2020-10-12 11:49:55,224 INFO L78 Accepts]: Start accepts. Automaton has 28382 states and 37128 transitions. Word has length 1744 [2020-10-12 11:49:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:49:55,226 INFO L479 AbstractCegarLoop]: Abstraction has 28382 states and 37128 transitions. [2020-10-12 11:49:55,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 11:49:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 28382 states and 37128 transitions. [2020-10-12 11:49:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1746 [2020-10-12 11:49:55,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:49:55,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:49:55,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:49:55,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:49:55,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:49:55,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1187048346, now seen corresponding path program 1 times [2020-10-12 11:49:55,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:49:55,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352968154] [2020-10-12 11:49:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:49:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:49:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:49:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:00,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:00,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1769 [2020-10-12 11:50:00,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:50:00,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-12 11:50:00,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:50:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 11:50:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1721 [2020-10-12 11:50:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:50:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:01,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:01,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:50:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:50:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:50:01,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:50:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:50:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:50:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:01,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:50:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:50:01,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:50:01,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:50:01,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 11:50:01,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:50:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:50:01,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:50:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:50:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:50:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 11:50:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:50:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:50:04,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352968154] [2020-10-12 11:50:04,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:50:04,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:50:04,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947374970] [2020-10-12 11:50:04,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:50:04,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:50:04,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:50:04,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:50:04,398 INFO L87 Difference]: Start difference. First operand 28382 states and 37128 transitions. Second operand 6 states.