/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/Problem03_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:27:08,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:27:08,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:27:08,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:27:08,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:27:08,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:27:08,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:27:08,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:27:08,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:27:08,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:27:08,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:27:08,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:27:08,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:27:08,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:27:08,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:27:08,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:27:08,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:27:08,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:27:08,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:27:08,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:27:08,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:27:08,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:27:08,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:27:08,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:27:08,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:27:08,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:27:08,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:27:08,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:27:08,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:27:08,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:27:08,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:27:08,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:27:08,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:27:08,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:27:08,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:27:08,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:27:08,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:27:08,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:27:08,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:27:08,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:27:08,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:27:08,832 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 11:27:08,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:27:08,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:27:08,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:27:08,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:27:08,874 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:27:08,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:27:08,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:27:08,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:27:08,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:27:08,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:27:08,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:27:08,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:27:08,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:27:08,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:27:08,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:27:08,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:27:08,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:27:08,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:27:08,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:27:08,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:27:08,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:27:08,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:27:08,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:27:08,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:27:08,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:27:08,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:27:08,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:27:08,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:27:08,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:27:08,880 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 11:27:09,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:27:09,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:27:09,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:27:09,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:27:09,207 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:27:09,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2020-10-12 11:27:09,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a10634bb/a4e924c01c5e43b5a71428bd96a3959c/FLAGdbfeaafac [2020-10-12 11:27:09,912 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:27:09,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2020-10-12 11:27:09,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a10634bb/a4e924c01c5e43b5a71428bd96a3959c/FLAGdbfeaafac [2020-10-12 11:27:10,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a10634bb/a4e924c01c5e43b5a71428bd96a3959c [2020-10-12 11:27:10,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:27:10,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:27:10,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:27:10,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:27:10,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:27:10,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:27:10" (1/1) ... [2020-10-12 11:27:10,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:10, skipping insertion in model container [2020-10-12 11:27:10,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:27:10" (1/1) ... [2020-10-12 11:27:10,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:27:10,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:27:11,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:27:11,113 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:27:11,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:27:11,416 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:27:11,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11 WrapperNode [2020-10-12 11:27:11,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:27:11,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:27:11,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:27:11,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:27:11,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:27:11,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:27:11,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:27:11,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:27:11,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (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 11:27:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:27:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:27:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:27:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:27:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:27:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:27:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:27:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:27:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:27:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:27:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:27:13,918 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:27:13,919 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:27:13,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:27:13 BoogieIcfgContainer [2020-10-12 11:27:13,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:27:13,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:27:13,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:27:13,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:27:13,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:27:10" (1/3) ... [2020-10-12 11:27:13,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69974b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:27:13, skipping insertion in model container [2020-10-12 11:27:13,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (2/3) ... [2020-10-12 11:27:13,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69974b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:27:13, skipping insertion in model container [2020-10-12 11:27:13,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:27:13" (3/3) ... [2020-10-12 11:27:13,943 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label52.c [2020-10-12 11:27:13,954 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:27:13,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:27:13,981 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:27:14,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:27:14,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:27:14,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:27:14,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:27:14,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:27:14,014 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:27:14,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:27:14,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:27:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:27:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 11:27:14,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:14,070 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] [2020-10-12 11:27:14,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:14,076 INFO L82 PathProgramCache]: Analyzing trace with hash -724563731, now seen corresponding path program 1 times [2020-10-12 11:27:14,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:14,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022185817] [2020-10-12 11:27:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 11:27:18,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3534 [2020-10-12 11:27:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:27:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:27:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:27:19,031 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 11:27:19,396 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-12 11:27:19,594 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-12 11:27:19,774 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-12 11:27:19,925 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-12 11:27:20,099 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-12 11:27:20,395 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:20,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:20,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:20,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:20,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:27:20,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:20,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:20,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:20,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:21,203 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 11:27:21,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022185817] [2020-10-12 11:27:21,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:27:21,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:27:21,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480108444] [2020-10-12 11:27:21,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:27:21,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:21,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:27:21,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:27:21,235 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-12 11:27:21,588 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 11:27:22,213 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-12 11:27:22,836 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-12 11:27:23,532 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2020-10-12 11:27:24,580 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2020-10-12 11:27:25,995 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2020-10-12 11:27:27,494 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 189 [2020-10-12 11:27:30,861 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 216 DAG size of output: 186 [2020-10-12 11:27:32,063 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 182 [2020-10-12 11:27:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:34,876 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:27:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:27:34,879 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-12 11:27:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:34,894 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:27:34,894 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:27:34,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:27:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:27:34,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:27:34,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:27:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:27:34,975 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 152 [2020-10-12 11:27:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:34,976 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:27:34,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:27:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:27:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 11:27:34,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:34,981 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] [2020-10-12 11:27:34,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:27:34,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:34,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1052351014, now seen corresponding path program 1 times [2020-10-12 11:27:34,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:34,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868581792] [2020-10-12 11:27:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:36,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:38,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:38,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 11:27:38,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:27:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3380 [2020-10-12 11:27:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:27:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:27:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:27:39,255 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2020-10-12 11:27:39,752 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:39,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:39,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:39,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:39,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:27:39,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:39,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:39,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:39,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:27:39,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:39,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 11:27:39,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:27:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:27:39,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:40,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868581792] [2020-10-12 11:27:40,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:40,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:27:40,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594312105] [2020-10-12 11:27:40,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:27:40,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:40,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:27:40,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:27:40,889 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:27:41,132 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 11:27:41,516 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2020-10-12 11:27:41,820 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2020-10-12 11:27:42,202 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2020-10-12 11:27:42,833 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 170 [2020-10-12 11:27:43,528 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 178 [2020-10-12 11:27:44,287 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 177 [2020-10-12 11:27:44,640 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 11:27:45,850 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 176 [2020-10-12 11:27:47,740 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 175 [2020-10-12 11:27:50,400 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 174 [2020-10-12 11:27:51,271 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 172 [2020-10-12 11:27:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:54,807 INFO L93 Difference]: Finished difference Result 977 states and 1580 transitions. [2020-10-12 11:27:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:27:54,809 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 163 [2020-10-12 11:27:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:54,817 INFO L225 Difference]: With dead ends: 977 [2020-10-12 11:27:54,817 INFO L226 Difference]: Without dead ends: 734 [2020-10-12 11:27:54,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2020-10-12 11:27:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-12 11:27:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 724. [2020-10-12 11:27:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-12 11:27:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 952 transitions. [2020-10-12 11:27:54,888 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 952 transitions. Word has length 163 [2020-10-12 11:27:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:54,890 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 952 transitions. [2020-10-12 11:27:54,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:27:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 952 transitions. [2020-10-12 11:27:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 11:27:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:54,895 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:27:54,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:27:54,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:54,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1150254706, now seen corresponding path program 1 times [2020-10-12 11:27:54,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:54,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241261916] [2020-10-12 11:27:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:55,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:55,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-12 11:27:55,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-12 11:27:55,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:27:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-12 11:27:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:55,919 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:55,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:55,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:55,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:55,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:55,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:27:55,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:55,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:27:55,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:55,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:27:55,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:56,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:56,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:27:56,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:56,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 11:27:56,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:27:56,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:56,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241261916] [2020-10-12 11:27:56,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:56,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:27:56,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596680356] [2020-10-12 11:27:56,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:27:56,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:56,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:27:56,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:27:56,145 INFO L87 Difference]: Start difference. First operand 724 states and 952 transitions. Second operand 5 states. [2020-10-12 11:27:56,483 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:27:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:58,891 INFO L93 Difference]: Finished difference Result 1760 states and 2419 transitions. [2020-10-12 11:27:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:27:58,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-12 11:27:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:58,908 INFO L225 Difference]: With dead ends: 1760 [2020-10-12 11:27:58,909 INFO L226 Difference]: Without dead ends: 1157 [2020-10-12 11:27:58,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:27:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2020-10-12 11:27:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1150. [2020-10-12 11:27:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1150 states. [2020-10-12 11:27:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1440 transitions. [2020-10-12 11:27:58,969 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1440 transitions. Word has length 173 [2020-10-12 11:27:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:58,971 INFO L479 AbstractCegarLoop]: Abstraction has 1150 states and 1440 transitions. [2020-10-12 11:27:58,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:27:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1440 transitions. [2020-10-12 11:27:58,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-12 11:27:58,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:58,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:27:58,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:27:58,977 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:58,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1307756922, now seen corresponding path program 1 times [2020-10-12 11:27:58,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:58,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612954546] [2020-10-12 11:27:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:03,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:03,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-12 11:28:03,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:28:03,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3975 [2020-10-12 11:28:03,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:28:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:03,195 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:03,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:03,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:03,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:28:03,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:03,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:03,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:03,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:03,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:03,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 11:28:03,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:28:03,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:03,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:03,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 11:28:03,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:03,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 11:28:03,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 11:28:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:28:03,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612954546] [2020-10-12 11:28:03,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:03,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:03,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938642139] [2020-10-12 11:28:03,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:03,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:03,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:03,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:03,753 INFO L87 Difference]: Start difference. First operand 1150 states and 1440 transitions. Second operand 8 states. [2020-10-12 11:28:03,964 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:05,856 INFO L93 Difference]: Finished difference Result 1596 states and 2078 transitions. [2020-10-12 11:28:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:28:05,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-10-12 11:28:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:05,863 INFO L225 Difference]: With dead ends: 1596 [2020-10-12 11:28:05,863 INFO L226 Difference]: Without dead ends: 1134 [2020-10-12 11:28:05,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:28:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-10-12 11:28:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1130. [2020-10-12 11:28:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2020-10-12 11:28:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1382 transitions. [2020-10-12 11:28:05,902 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1382 transitions. Word has length 197 [2020-10-12 11:28:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:05,903 INFO L479 AbstractCegarLoop]: Abstraction has 1130 states and 1382 transitions. [2020-10-12 11:28:05,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1382 transitions. [2020-10-12 11:28:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 11:28:05,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:05,907 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:05,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:28:05,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1244442378, now seen corresponding path program 1 times [2020-10-12 11:28:05,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:05,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879367081] [2020-10-12 11:28:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 11:28:09,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:28:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3454 [2020-10-12 11:28:09,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:09,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:09,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:28:09,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,634 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:09,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:28:09,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:09,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:09,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 11:28:09,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:09,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:28:09,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:10,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:10,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:28:10,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:10,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 11:28:10,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:28:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:28:10,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879367081] [2020-10-12 11:28:10,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:10,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:28:10,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555789232] [2020-10-12 11:28:10,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:28:10,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:10,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:28:10,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:28:10,156 INFO L87 Difference]: Start difference. First operand 1130 states and 1382 transitions. Second operand 7 states. [2020-10-12 11:28:10,320 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:28:11,624 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:28:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:13,448 INFO L93 Difference]: Finished difference Result 2468 states and 3176 transitions. [2020-10-12 11:28:13,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:28:13,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-12 11:28:13,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:13,459 INFO L225 Difference]: With dead ends: 2468 [2020-10-12 11:28:13,459 INFO L226 Difference]: Without dead ends: 1814 [2020-10-12 11:28:13,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-10-12 11:28:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1791. [2020-10-12 11:28:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2020-10-12 11:28:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2242 transitions. [2020-10-12 11:28:13,522 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2242 transitions. Word has length 218 [2020-10-12 11:28:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:13,522 INFO L479 AbstractCegarLoop]: Abstraction has 1791 states and 2242 transitions. [2020-10-12 11:28:13,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2242 transitions. [2020-10-12 11:28:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-12 11:28:13,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:13,529 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:13,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:28:13,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:13,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:13,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1931826341, now seen corresponding path program 1 times [2020-10-12 11:28:13,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:13,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804511074] [2020-10-12 11:28:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:18,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:18,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 11:28:18,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:28:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 11:28:18,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:28:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:18,795 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:18,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:18,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:18,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:28:18,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:18,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:18,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:28:18,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:28:18,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:28:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:28:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:19,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:19,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:28:19,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 11:28:19,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:28:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:19,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:28:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:19,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:19,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:28:19,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:28:19,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:28:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 88 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:28:19,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804511074] [2020-10-12 11:28:19,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:19,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:28:19,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435535202] [2020-10-12 11:28:19,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:19,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:19,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:19,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:19,175 INFO L87 Difference]: Start difference. First operand 1791 states and 2242 transitions. Second operand 8 states. [2020-10-12 11:28:19,330 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:28:20,316 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:28:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:22,523 INFO L93 Difference]: Finished difference Result 5009 states and 6512 transitions. [2020-10-12 11:28:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:28:22,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-10-12 11:28:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:22,542 INFO L225 Difference]: With dead ends: 5009 [2020-10-12 11:28:22,543 INFO L226 Difference]: Without dead ends: 3339 [2020-10-12 11:28:22,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:28:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2020-10-12 11:28:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3159. [2020-10-12 11:28:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3159 states. [2020-10-12 11:28:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 3975 transitions. [2020-10-12 11:28:22,650 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 3975 transitions. Word has length 240 [2020-10-12 11:28:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:22,650 INFO L479 AbstractCegarLoop]: Abstraction has 3159 states and 3975 transitions. [2020-10-12 11:28:22,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 3975 transitions. [2020-10-12 11:28:22,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-12 11:28:22,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:22,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:22,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:28:22,659 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:22,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1810575355, now seen corresponding path program 1 times [2020-10-12 11:28:22,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:22,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345746496] [2020-10-12 11:28:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:25,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:25,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-12 11:28:25,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:25,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2574 [2020-10-12 11:28:25,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:28:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-12 11:28:25,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,092 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-12 11:28:26,289 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-12 11:28:26,458 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-12 11:28:26,625 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-12 11:28:26,760 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-12 11:28:27,011 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:27,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:27,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:27,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:27,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:28:27,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:27,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:27,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:27,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:27,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:27,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:28:27,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 11:28:27,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:28:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:28:27,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:28:28,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345746496] [2020-10-12 11:28:28,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:28,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:28:28,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403775893] [2020-10-12 11:28:28,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:28:28,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:28:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:28:28,458 INFO L87 Difference]: Start difference. First operand 3159 states and 3975 transitions. Second operand 16 states. [2020-10-12 11:28:28,678 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 11:28:30,517 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2020-10-12 11:28:30,718 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-12 11:28:31,003 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-10-12 11:28:31,555 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 181 [2020-10-12 11:28:32,195 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 202 [2020-10-12 11:28:33,287 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2020-10-12 11:28:34,688 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2020-10-12 11:28:36,272 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 192 [2020-10-12 11:28:38,720 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 189 [2020-10-12 11:28:40,114 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 185 [2020-10-12 11:28:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:41,546 INFO L93 Difference]: Finished difference Result 7371 states and 9385 transitions. [2020-10-12 11:28:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:28:41,551 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 252 [2020-10-12 11:28:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:41,571 INFO L225 Difference]: With dead ends: 7371 [2020-10-12 11:28:41,571 INFO L226 Difference]: Without dead ends: 4333 [2020-10-12 11:28:41,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:28:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2020-10-12 11:28:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4168. [2020-10-12 11:28:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4168 states. [2020-10-12 11:28:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 5200 transitions. [2020-10-12 11:28:41,694 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 5200 transitions. Word has length 252 [2020-10-12 11:28:41,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:41,694 INFO L479 AbstractCegarLoop]: Abstraction has 4168 states and 5200 transitions. [2020-10-12 11:28:41,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:28:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 5200 transitions. [2020-10-12 11:28:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-12 11:28:41,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:41,707 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:41,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:28:41,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:41,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:41,708 INFO L82 PathProgramCache]: Analyzing trace with hash -939646772, now seen corresponding path program 1 times [2020-10-12 11:28:41,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:41,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997365898] [2020-10-12 11:28:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:46,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:46,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-12 11:28:46,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:28:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4505 [2020-10-12 11:28:46,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:28:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-12 11:28:46,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:46,539 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:46,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:46,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:28:46,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:46,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:46,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:46,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 11:28:46,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 11:28:46,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 11:28:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 11:28:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:47,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:47,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:28:47,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:28:47,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:28:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 117 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:28:47,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997365898] [2020-10-12 11:28:47,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:47,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:28:47,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177603946] [2020-10-12 11:28:47,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:28:47,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:47,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:28:47,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:28:47,197 INFO L87 Difference]: Start difference. First operand 4168 states and 5200 transitions. Second operand 7 states. [2020-10-12 11:28:47,336 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:49,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:49,807 INFO L93 Difference]: Finished difference Result 9786 states and 12852 transitions. [2020-10-12 11:28:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:28:49,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-12 11:28:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:49,847 INFO L225 Difference]: With dead ends: 9786 [2020-10-12 11:28:49,847 INFO L226 Difference]: Without dead ends: 6973 [2020-10-12 11:28:49,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:28:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2020-10-12 11:28:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6826. [2020-10-12 11:28:50,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6826 states. [2020-10-12 11:28:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 8517 transitions. [2020-10-12 11:28:50,049 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 8517 transitions. Word has length 281 [2020-10-12 11:28:50,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:50,050 INFO L479 AbstractCegarLoop]: Abstraction has 6826 states and 8517 transitions. [2020-10-12 11:28:50,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:50,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 8517 transitions. [2020-10-12 11:28:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-12 11:28:50,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:50,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:50,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:28:50,075 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:50,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:50,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2124363172, now seen corresponding path program 1 times [2020-10-12 11:28:50,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:50,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866920344] [2020-10-12 11:28:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:55,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:55,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 11:28:55,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:28:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 11:28:55,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:28:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:28:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 11:28:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:55,397 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:55,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:55,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:55,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:55,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:55,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:28:55,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:55,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:55,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:55,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:55,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:55,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:55,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:55,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:28:55,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:28:55,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:55,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:55,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:28:55,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:55,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 11:28:55,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:28:55,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 11:28:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:55,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:28:55,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 11:28:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:28:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 209 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:28:56,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866920344] [2020-10-12 11:28:56,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:56,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:28:56,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619031510] [2020-10-12 11:28:56,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:28:56,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:56,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:28:56,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:28:56,058 INFO L87 Difference]: Start difference. First operand 6826 states and 8517 transitions. Second operand 9 states. [2020-10-12 11:28:56,378 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:28:57,405 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:28:58,286 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:29:01,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:01,236 INFO L93 Difference]: Finished difference Result 14924 states and 20757 transitions. [2020-10-12 11:29:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 11:29:01,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2020-10-12 11:29:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:01,300 INFO L225 Difference]: With dead ends: 14924 [2020-10-12 11:29:01,301 INFO L226 Difference]: Without dead ends: 10443 [2020-10-12 11:29:01,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:29:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10443 states. [2020-10-12 11:29:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10443 to 9996. [2020-10-12 11:29:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9996 states. [2020-10-12 11:29:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 12345 transitions. [2020-10-12 11:29:01,625 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 12345 transitions. Word has length 296 [2020-10-12 11:29:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:01,625 INFO L479 AbstractCegarLoop]: Abstraction has 9996 states and 12345 transitions. [2020-10-12 11:29:01,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:29:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 12345 transitions. [2020-10-12 11:29:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-12 11:29:01,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:01,657 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:01,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:29:01,658 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:01,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1043312768, now seen corresponding path program 1 times [2020-10-12 11:29:01,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:01,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350834312] [2020-10-12 11:29:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:06,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:06,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-12 11:29:06,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:29:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4599 [2020-10-12 11:29:06,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:29:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-12 11:29:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:07,250 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-12 11:29:07,396 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-12 11:29:07,900 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:07,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:07,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:07,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:29:07,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:07,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:07,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:07,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:07,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:08,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 11:29:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:29:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:08,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:29:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:08,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:08,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 11:29:08,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-12 11:29:08,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 11:29:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 64 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 11:29:09,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350834312] [2020-10-12 11:29:09,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:09,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:29:09,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703444444] [2020-10-12 11:29:09,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 11:29:09,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:09,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 11:29:09,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:29:09,763 INFO L87 Difference]: Start difference. First operand 9996 states and 12345 transitions. Second operand 20 states. [2020-10-12 11:29:09,975 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 11:29:10,668 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 141 [2020-10-12 11:29:15,899 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 79 [2020-10-12 11:29:16,115 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-12 11:29:16,396 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-12 11:29:17,018 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 168 [2020-10-12 11:29:17,677 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 176 [2020-10-12 11:29:18,839 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 175 [2020-10-12 11:29:20,112 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 174 [2020-10-12 11:29:22,004 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 173 [2020-10-12 11:29:23,633 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 172 [2020-10-12 11:29:25,543 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 171 [2020-10-12 11:29:26,631 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2020-10-12 11:29:26,870 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-12 11:29:27,646 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 153 [2020-10-12 11:29:28,341 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-12 11:29:29,155 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-12 11:29:33,870 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-12 11:29:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:33,948 INFO L93 Difference]: Finished difference Result 25091 states and 33271 transitions. [2020-10-12 11:29:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 11:29:33,948 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 307 [2020-10-12 11:29:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:34,005 INFO L225 Difference]: With dead ends: 25091 [2020-10-12 11:29:34,005 INFO L226 Difference]: Without dead ends: 17000 [2020-10-12 11:29:34,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 11:29:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17000 states. [2020-10-12 11:29:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17000 to 16719. [2020-10-12 11:29:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16719 states. [2020-10-12 11:29:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16719 states to 16719 states and 20887 transitions. [2020-10-12 11:29:34,395 INFO L78 Accepts]: Start accepts. Automaton has 16719 states and 20887 transitions. Word has length 307 [2020-10-12 11:29:34,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:34,396 INFO L479 AbstractCegarLoop]: Abstraction has 16719 states and 20887 transitions. [2020-10-12 11:29:34,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 11:29:34,396 INFO L276 IsEmpty]: Start isEmpty. Operand 16719 states and 20887 transitions. [2020-10-12 11:29:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-12 11:29:34,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:34,431 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-12 11:29:34,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:29:34,431 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash 716767394, now seen corresponding path program 1 times [2020-10-12 11:29:34,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:34,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68540862] [2020-10-12 11:29:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:39,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:39,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-12 11:29:39,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:29:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 11:29:39,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:29:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 11:29:39,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:39,826 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:39,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:39,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:39,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:29:39,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:39,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:39,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:39,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:29:39,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 11:29:39,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:29:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:29:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:40,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:40,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 11:29:40,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:40,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-12 11:29:40,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 11:29:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 154 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:29:40,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68540862] [2020-10-12 11:29:40,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:40,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:29:40,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270532493] [2020-10-12 11:29:40,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:29:40,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:40,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:29:40,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:40,802 INFO L87 Difference]: Start difference. First operand 16719 states and 20887 transitions. Second operand 8 states. [2020-10-12 11:29:40,953 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:29:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:42,729 INFO L93 Difference]: Finished difference Result 22189 states and 27614 transitions. [2020-10-12 11:29:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:29:42,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2020-10-12 11:29:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:42,776 INFO L225 Difference]: With dead ends: 22189 [2020-10-12 11:29:42,776 INFO L226 Difference]: Without dead ends: 16802 [2020-10-12 11:29:42,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:29:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16802 states. [2020-10-12 11:29:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16802 to 16710. [2020-10-12 11:29:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16710 states. [2020-10-12 11:29:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16710 states to 16710 states and 20852 transitions. [2020-10-12 11:29:43,231 INFO L78 Accepts]: Start accepts. Automaton has 16710 states and 20852 transitions. Word has length 313 [2020-10-12 11:29:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:43,231 INFO L479 AbstractCegarLoop]: Abstraction has 16710 states and 20852 transitions. [2020-10-12 11:29:43,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:29:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 16710 states and 20852 transitions. [2020-10-12 11:29:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-12 11:29:43,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:43,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:43,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:29:43,286 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:43,287 INFO L82 PathProgramCache]: Analyzing trace with hash -793326403, now seen corresponding path program 1 times [2020-10-12 11:29:43,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:43,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150514702] [2020-10-12 11:29:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:43,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:45,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:45,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-12 11:29:45,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:29:45,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2541 [2020-10-12 11:29:45,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:45,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:29:45,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-12 11:29:45,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 11:29:45,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:46,187 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:46,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:46,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:46,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:29:46,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:46,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:46,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:46,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:46,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:29:46,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:46,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:46,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:29:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:46,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 11:29:46,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:46,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 11:29:46,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 11:29:46,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 11:29:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:46,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:29:46,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:29:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 11:29:46,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:29:46,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:29:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 164 proven. 25 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:29:46,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150514702] [2020-10-12 11:29:46,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:46,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:29:46,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338101879] [2020-10-12 11:29:46,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:29:46,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:46,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:29:46,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:29:46,793 INFO L87 Difference]: Start difference. First operand 16710 states and 20852 transitions. Second operand 6 states. [2020-10-12 11:29:47,048 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:49,350 INFO L93 Difference]: Finished difference Result 29935 states and 38602 transitions. [2020-10-12 11:29:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:29:49,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 317 [2020-10-12 11:29:49,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:49,423 INFO L225 Difference]: With dead ends: 29935 [2020-10-12 11:29:49,423 INFO L226 Difference]: Without dead ends: 20164 [2020-10-12 11:29:49,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20164 states. [2020-10-12 11:29:49,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20164 to 19866. [2020-10-12 11:29:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19866 states. [2020-10-12 11:29:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19866 states to 19866 states and 24598 transitions. [2020-10-12 11:29:49,919 INFO L78 Accepts]: Start accepts. Automaton has 19866 states and 24598 transitions. Word has length 317 [2020-10-12 11:29:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:49,920 INFO L479 AbstractCegarLoop]: Abstraction has 19866 states and 24598 transitions. [2020-10-12 11:29:49,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:29:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19866 states and 24598 transitions. [2020-10-12 11:29:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 11:29:49,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:49,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:49,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:29:49,976 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:49,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:49,977 INFO L82 PathProgramCache]: Analyzing trace with hash 233810679, now seen corresponding path program 1 times [2020-10-12 11:29:49,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:49,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831091424] [2020-10-12 11:29:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:50,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:55,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:55,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 11:29:55,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:29:55,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 11:29:55,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 11:29:55,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:55,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-12 11:29:55,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:55,800 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-12 11:29:56,033 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-12 11:29:56,197 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-12 11:29:56,387 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-10-12 11:29:56,575 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-10-12 11:29:56,749 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-10-12 11:29:57,142 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:57,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:57,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:57,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:57,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:29:57,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:57,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:57,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:57,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:57,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 11:29:57,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:57,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:57,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:57,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:29:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:57,610 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-12 11:29:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:29:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:57,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:57,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 11:29:57,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 11:29:57,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 11:29:57,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 11:29:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:58,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:58,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 11:29:58,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:58,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 11:29:58,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:58,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:58,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 11:29:58,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:29:58,801 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-12 11:29:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 44 proven. 158 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:29:59,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831091424] [2020-10-12 11:29:59,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:59,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 11:29:59,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648934668] [2020-10-12 11:29:59,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 11:29:59,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:59,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 11:29:59,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:29:59,726 INFO L87 Difference]: Start difference. First operand 19866 states and 24598 transitions. Second operand 21 states. [2020-10-12 11:30:00,458 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 144 [2020-10-12 11:30:00,750 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-10-12 11:30:01,686 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-10-12 11:30:04,034 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:30:05,103 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 82 [2020-10-12 11:30:05,626 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2020-10-12 11:30:06,173 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2020-10-12 11:30:07,054 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 171 [2020-10-12 11:30:07,967 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 179 [2020-10-12 11:30:08,119 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-10-12 11:30:09,457 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 238 DAG size of output: 179 [2020-10-12 11:30:09,862 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-10-12 11:30:11,579 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 245 DAG size of output: 178 [2020-10-12 11:30:12,304 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-12 11:30:12,863 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-12 11:30:15,167 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 246 DAG size of output: 177 [2020-10-12 11:30:17,574 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 247 DAG size of output: 176 [2020-10-12 11:30:19,023 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 174 [2020-10-12 11:30:21,618 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-12 11:30:21,825 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-12 11:30:22,363 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 68 [2020-10-12 11:30:22,808 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 80 [2020-10-12 11:30:23,085 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2020-10-12 11:30:23,394 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2020-10-12 11:30:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:23,676 INFO L93 Difference]: Finished difference Result 61959 states and 83291 transitions. [2020-10-12 11:30:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 11:30:23,677 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 320 [2020-10-12 11:30:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:23,891 INFO L225 Difference]: With dead ends: 61959 [2020-10-12 11:30:23,892 INFO L226 Difference]: Without dead ends: 46221 [2020-10-12 11:30:23,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=599, Invalid=1753, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 11:30:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46221 states. [2020-10-12 11:30:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46221 to 44403. [2020-10-12 11:30:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44403 states. [2020-10-12 11:30:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44403 states to 44403 states and 54866 transitions. [2020-10-12 11:30:25,058 INFO L78 Accepts]: Start accepts. Automaton has 44403 states and 54866 transitions. Word has length 320 [2020-10-12 11:30:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:30:25,059 INFO L479 AbstractCegarLoop]: Abstraction has 44403 states and 54866 transitions. [2020-10-12 11:30:25,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 11:30:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 44403 states and 54866 transitions. [2020-10-12 11:30:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-12 11:30:25,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:25,091 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:30:25,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:30:25,092 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:25,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:25,092 INFO L82 PathProgramCache]: Analyzing trace with hash 56697141, now seen corresponding path program 1 times [2020-10-12 11:30:25,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:25,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983736738] [2020-10-12 11:30:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:30,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:30,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-12 11:30:30,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:30:30,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 11:30:30,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:30,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 11:30:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 298 [2020-10-12 11:30:30,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:31,293 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 11:30:31,540 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-12 11:30:31,841 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 86 [2020-10-12 11:30:32,215 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 86 [2020-10-12 11:30:32,803 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 101 [2020-10-12 11:30:33,447 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 98 [2020-10-12 11:30:34,024 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 89 [2020-10-12 11:30:34,561 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 78 [2020-10-12 11:30:34,925 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 59 [2020-10-12 11:30:35,210 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:30:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:35,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:35,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:30:35,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:35,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:30:35,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:30:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:30:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:30:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:30:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:36,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:36,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 11:30:36,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:36,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-12 11:30:36,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:30:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 11:30:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 11:30:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:36,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:36,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:36,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 11:30:36,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 11:30:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:30:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 11:30:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 36 proven. 172 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:30:38,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983736738] [2020-10-12 11:30:38,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:38,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 11:30:38,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972251992] [2020-10-12 11:30:38,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 11:30:38,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:38,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 11:30:38,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:30:38,107 INFO L87 Difference]: Start difference. First operand 44403 states and 54866 transitions. Second operand 22 states. [2020-10-12 11:30:38,613 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 141 [2020-10-12 11:30:40,110 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-12 11:30:40,348 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 132