/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=NARROWEST --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/Problem06_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:09:58,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:09:58,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:09:58,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:09:58,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:09:58,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:09:58,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:09:58,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:09:58,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:09:58,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:09:58,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:09:58,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:09:58,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:09:58,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:09:58,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:09:58,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:09:58,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:09:58,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:09:58,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:09:58,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:09:58,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:09:58,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:09:58,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:09:58,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:09:58,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:09:58,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:09:58,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:09:58,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:09:58,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:09:58,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:09:58,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:09:58,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:09:58,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:09:58,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:09:58,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:09:58,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:09:58,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:09:58,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:09:58,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:09:58,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:09:58,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:09:58,376 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 [2020-10-13 07:09:58,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:09:58,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:09:58,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:09:58,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:09:58,415 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:09:58,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:09:58,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:09:58,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:09:58,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:09:58,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:09:58,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:09:58,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:09:58,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:09:58,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:09:58,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:09:58,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:09:58,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:09:58,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:09:58,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:09:58,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:09:58,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:09:58,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:09:58,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:09:58,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:09:58,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:09:58,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:09:58,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:09:58,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:09:58,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:09:58,421 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:09:58,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:09:58,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:09:58,717 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:09:58,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:09:58,719 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:09:58,720 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label35.c [2020-10-13 07:09:58,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3df928152/1cec8938f3ad49fd889a1ed22677be6b/FLAG6e31f0cba [2020-10-13 07:09:59,707 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:09:59,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label35.c [2020-10-13 07:09:59,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3df928152/1cec8938f3ad49fd889a1ed22677be6b/FLAG6e31f0cba [2020-10-13 07:10:00,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3df928152/1cec8938f3ad49fd889a1ed22677be6b [2020-10-13 07:10:00,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:10:00,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:10:00,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:10:00,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:10:00,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:10:00,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:00" (1/1) ... [2020-10-13 07:10:00,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3a7124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:00, skipping insertion in model container [2020-10-13 07:10:00,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:00" (1/1) ... [2020-10-13 07:10:00,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:10:00,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:10:02,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:10:02,816 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:10:03,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:10:03,931 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:10:03,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03 WrapperNode [2020-10-13 07:10:03,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:10:03,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:10:03,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:10:03,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:10:03,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (1/1) ... [2020-10-13 07:10:03,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (1/1) ... [2020-10-13 07:10:04,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (1/1) ... [2020-10-13 07:10:04,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (1/1) ... [2020-10-13 07:10:04,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (1/1) ... [2020-10-13 07:10:04,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (1/1) ... [2020-10-13 07:10:04,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (1/1) ... [2020-10-13 07:10:04,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:10:04,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:10:04,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:10:04,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:10:04,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (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 [2020-10-13 07:10:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:10:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:10:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:10:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:10:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:10:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:10:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:10:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:10:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:10:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:10:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:10:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:10:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:10:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:10:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:10:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:10:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:10:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:10:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:10:11,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:10:11,192 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:10:11,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:11 BoogieIcfgContainer [2020-10-13 07:10:11,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:10:11,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:10:11,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:10:11,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:10:11,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:10:00" (1/3) ... [2020-10-13 07:10:11,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2041c581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:11, skipping insertion in model container [2020-10-13 07:10:11,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03" (2/3) ... [2020-10-13 07:10:11,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2041c581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:11, skipping insertion in model container [2020-10-13 07:10:11,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:11" (3/3) ... [2020-10-13 07:10:11,212 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label35.c [2020-10-13 07:10:11,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:10:11,231 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:10:11,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:10:11,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:10:11,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:10:11,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:10:11,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:10:11,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:10:11,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:10:11,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:10:11,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:10:11,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:10:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-13 07:10:11,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:10:11,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:10:11,375 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:10:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:10:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash 748659775, now seen corresponding path program 1 times [2020-10-13 07:10:11,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:10:11,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075004663] [2020-10-13 07:10:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:10:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:12,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:17,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:17,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-13 07:10:17,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:10:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5363 [2020-10-13 07:10:17,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:17,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:10:17,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:10:17,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:10:17,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:10:20,630 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:10:20,870 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:10:21,082 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:10:21,279 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-13 07:10:21,476 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:10:21,659 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:10:21,856 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:10:22,010 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:10:22,195 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:10:22,369 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:10:22,843 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:10:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:10:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:22,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:10:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:10:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 07:10:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:10:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:10:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:10:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:10:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:10:33,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075004663] [2020-10-13 07:10:33,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:10:33,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:10:33,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509586362] [2020-10-13 07:10:33,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:10:33,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:10:33,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:10:33,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:10:33,817 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:10:34,181 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:10:34,761 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-13 07:10:35,342 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-13 07:10:35,997 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 174 [2020-10-13 07:10:39,452 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 173 [2020-10-13 07:10:42,382 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 172 [2020-10-13 07:10:44,593 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 163 [2020-10-13 07:10:45,270 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 169 [2020-10-13 07:10:46,202 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 168 [2020-10-13 07:10:54,895 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 161 [2020-10-13 07:10:55,547 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 166 [2020-10-13 07:10:58,250 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 165 [2020-10-13 07:11:04,838 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-13 07:11:05,450 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-13 07:11:07,663 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-13 07:11:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:11:18,632 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:11:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:11:18,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 978 [2020-10-13 07:11:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:11:18,675 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:11:18,675 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:11:18,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:11:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:11:18,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:11:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:11:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:11:18,843 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 978 [2020-10-13 07:11:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:11:18,846 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:11:18,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:11:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:11:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2020-10-13 07:11:18,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:11:18,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:11:18,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:11:18,888 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:11:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:11:18,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2020060846, now seen corresponding path program 1 times [2020-10-13 07:11:18,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:11:18,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376323391] [2020-10-13 07:11:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:11:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:19,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:24,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:24,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1066 [2020-10-13 07:11:24,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:11:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 07:11:24,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:11:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:11:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:11:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:24,774 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:11:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:11:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:24,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:24,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:11:24,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 07:11:24,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:11:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:11:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:11:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:11:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:25,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:25,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:11:25,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 07:11:25,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:11:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:11:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:11:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:11:26,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376323391] [2020-10-13 07:11:26,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:11:26,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:11:26,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626295331] [2020-10-13 07:11:26,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:11:26,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:11:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:11:26,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:11:26,679 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:11:26,842 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:11:27,866 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:11:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:11:46,270 INFO L93 Difference]: Finished difference Result 4495 states and 7529 transitions. [2020-10-13 07:11:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 07:11:46,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1048 [2020-10-13 07:11:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:11:46,286 INFO L225 Difference]: With dead ends: 4495 [2020-10-13 07:11:46,287 INFO L226 Difference]: Without dead ends: 3236 [2020-10-13 07:11:46,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 07:11:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2020-10-13 07:11:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3148. [2020-10-13 07:11:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2020-10-13 07:11:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 4654 transitions. [2020-10-13 07:11:46,385 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 4654 transitions. Word has length 1048 [2020-10-13 07:11:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:11:46,386 INFO L479 AbstractCegarLoop]: Abstraction has 3148 states and 4654 transitions. [2020-10-13 07:11:46,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:11:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 4654 transitions. [2020-10-13 07:11:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-13 07:11:46,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:11:46,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:11:46,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:11:46,412 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:11:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:11:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1127860949, now seen corresponding path program 1 times [2020-10-13 07:11:46,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:11:46,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892965009] [2020-10-13 07:11:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:11:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:51,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1118 [2020-10-13 07:11:51,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:11:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5188 [2020-10-13 07:11:51,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:11:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:11:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:11:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:11:54,023 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:11:54,173 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:11:54,320 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-13 07:11:54,471 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-13 07:11:54,843 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-13 07:11:54,995 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-13 07:11:55,397 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:11:55,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:11:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:55,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:55,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:11:55,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 07:11:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:11:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:11:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:11:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:11:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:11:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:55,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:55,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:55,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:11:55,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-13 07:11:55,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:11:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:11:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:11:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-13 07:12:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:12:04,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892965009] [2020-10-13 07:12:04,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:12:04,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:12:04,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319494315] [2020-10-13 07:12:04,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:12:04,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:12:04,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:12:04,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:12:04,115 INFO L87 Difference]: Start difference. First operand 3148 states and 4654 transitions. Second operand 18 states. [2020-10-13 07:12:04,335 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:12:06,451 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2020-10-13 07:12:06,659 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-13 07:12:06,930 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-13 07:12:07,483 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-13 07:12:08,093 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 176 [2020-10-13 07:12:09,510 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 175 [2020-10-13 07:12:12,257 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 174 [2020-10-13 07:12:20,802 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 172 [2020-10-13 07:12:21,476 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 186 [2020-10-13 07:12:22,734 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2020-10-13 07:12:31,993 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 180 [2020-10-13 07:12:33,328 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 176 [2020-10-13 07:12:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:12:56,835 INFO L93 Difference]: Finished difference Result 8389 states and 13338 transitions. [2020-10-13 07:12:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 07:12:56,838 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1100 [2020-10-13 07:12:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:12:56,871 INFO L225 Difference]: With dead ends: 8389 [2020-10-13 07:12:56,871 INFO L226 Difference]: Without dead ends: 6001 [2020-10-13 07:12:56,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2020-10-13 07:12:56,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2020-10-13 07:12:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5929. [2020-10-13 07:12:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5929 states. [2020-10-13 07:12:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5929 states to 5929 states and 8852 transitions. [2020-10-13 07:12:57,051 INFO L78 Accepts]: Start accepts. Automaton has 5929 states and 8852 transitions. Word has length 1100 [2020-10-13 07:12:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:12:57,052 INFO L479 AbstractCegarLoop]: Abstraction has 5929 states and 8852 transitions. [2020-10-13 07:12:57,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:12:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5929 states and 8852 transitions. [2020-10-13 07:12:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2020-10-13 07:12:57,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:12:57,080 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:12:57,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:12:57,080 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:12:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:12:57,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1010514494, now seen corresponding path program 1 times [2020-10-13 07:12:57,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:12:57,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367476831] [2020-10-13 07:12:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:12:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:58,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:02,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:02,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1145 [2020-10-13 07:13:02,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:13:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 07:13:02,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:13:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:13:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:13:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:05,332 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-13 07:13:05,529 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 07:13:05,737 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 07:13:05,957 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 07:13:06,193 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 07:13:06,470 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-10-13 07:13:06,722 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-13 07:13:06,915 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-13 07:13:07,105 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-13 07:13:07,346 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-10-13 07:13:07,556 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-13 07:13:07,730 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-13 07:13:08,143 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:13:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:13:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:08,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:13:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 07:13:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:13:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:13:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:13:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:08,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:13:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 07:13:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:13:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:13:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:13:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:13:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:13:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:09,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:09,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:09,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:13:09,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 07:13:09,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:13:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:13:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 07:13:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 3 proven. 162 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:13:24,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367476831] [2020-10-13 07:13:24,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:13:24,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 07:13:24,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616507121] [2020-10-13 07:13:24,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 07:13:24,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:13:24,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 07:13:24,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2020-10-13 07:13:24,760 INFO L87 Difference]: Start difference. First operand 5929 states and 8852 transitions. Second operand 25 states. [2020-10-13 07:13:25,068 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:13:27,589 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-13 07:13:28,252 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 145 [2020-10-13 07:13:29,354 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2020-10-13 07:13:29,681 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-10-13 07:13:30,115 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-13 07:13:30,881 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 168 [2020-10-13 07:13:31,715 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 176 [2020-10-13 07:13:35,512 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-13 07:13:37,459 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-10-13 07:13:48,346 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 143