/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/Problem15_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:15:32,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:15:32,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:15:32,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:15:32,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:15:32,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:15:32,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:15:32,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:15:32,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:15:32,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:15:32,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:15:32,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:15:32,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:15:32,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:15:32,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:15:32,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:15:32,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:15:32,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:15:32,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:15:32,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:15:32,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:15:32,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:15:32,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:15:32,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:15:32,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:15:32,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:15:32,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:15:32,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:15:32,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:15:32,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:15:32,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:15:32,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:15:32,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:15:32,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:15:32,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:15:32,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:15:32,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:15:32,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:15:32,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:15:32,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:15:32,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:15:32,159 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 14:15:32,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:15:32,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:15:32,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:15:32,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:15:32,207 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:15:32,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:15:32,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:15:32,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:15:32,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:15:32,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:15:32,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:15:32,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:15:32,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:15:32,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:15:32,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:15:32,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:15:32,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:15:32,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:15:32,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:15:32,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:15:32,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:15:32,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:15:32,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:15:32,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:15:32,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:15:32,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:15:32,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:15:32,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:15:32,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:15:32,215 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 14:15:32,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:15:32,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:15:32,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:15:32,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:15:32,638 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:15:32,639 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36.c [2020-10-12 14:15:32,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/604ef8f21/6839435e4e2942efa276f8180feeafa2/FLAG664e1e9da [2020-10-12 14:15:33,421 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:15:33,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label36.c [2020-10-12 14:15:33,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/604ef8f21/6839435e4e2942efa276f8180feeafa2/FLAG664e1e9da [2020-10-12 14:15:33,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/604ef8f21/6839435e4e2942efa276f8180feeafa2 [2020-10-12 14:15:33,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:15:33,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:15:33,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:15:33,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:15:33,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:15:33,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:15:33" (1/1) ... [2020-10-12 14:15:33,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:33, skipping insertion in model container [2020-10-12 14:15:33,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:15:33" (1/1) ... [2020-10-12 14:15:33,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:15:33,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:15:34,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:15:34,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:15:35,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:15:35,175 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:15:35,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35 WrapperNode [2020-10-12 14:15:35,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:15:35,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:15:35,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:15:35,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:15:35,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (1/1) ... [2020-10-12 14:15:35,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (1/1) ... [2020-10-12 14:15:35,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (1/1) ... [2020-10-12 14:15:35,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (1/1) ... [2020-10-12 14:15:35,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (1/1) ... [2020-10-12 14:15:35,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (1/1) ... [2020-10-12 14:15:35,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (1/1) ... [2020-10-12 14:15:35,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:15:35,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:15:35,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:15:35,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:15:35,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (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 14:15:35,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:15:35,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:15:35,482 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:15:35,483 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:15:35,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:15:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:15:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:15:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:15:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:15:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:15:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:15:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:15:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:15:41,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:15:41,682 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:15:41,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:15:41 BoogieIcfgContainer [2020-10-12 14:15:41,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:15:41,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:15:41,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:15:41,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:15:41,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:15:33" (1/3) ... [2020-10-12 14:15:41,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1853690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:15:41, skipping insertion in model container [2020-10-12 14:15:41,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:15:35" (2/3) ... [2020-10-12 14:15:41,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1853690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:15:41, skipping insertion in model container [2020-10-12 14:15:41,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:15:41" (3/3) ... [2020-10-12 14:15:41,717 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label36.c [2020-10-12 14:15:41,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:15:41,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:15:41,768 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:15:41,813 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:15:41,814 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:15:41,814 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:15:41,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:15:41,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:15:41,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:15:41,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:15:41,815 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:15:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:15:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 14:15:41,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:15:41,882 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] [2020-10-12 14:15:41,883 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:15:41,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:15:41,892 INFO L82 PathProgramCache]: Analyzing trace with hash 414011765, now seen corresponding path program 1 times [2020-10-12 14:15:41,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:15:41,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666795088] [2020-10-12 14:15:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:15:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:42,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:15:42,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-12 14:15:42,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:15:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:15:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 14:15:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:15:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:15:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:42,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:42,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:15:42,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:15:42,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:15:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:15:42,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:42,901 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 14:15:42,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666795088] [2020-10-12 14:15:42,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:15:42,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:15:42,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38618488] [2020-10-12 14:15:42,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:15:42,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:15:42,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:15:42,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:15:42,930 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:15:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:15:49,068 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-12 14:15:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:15:49,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-12 14:15:49,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:15:49,095 INFO L225 Difference]: With dead ends: 1199 [2020-10-12 14:15:49,095 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 14:15:49,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:15:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 14:15:49,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-12 14:15:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:15:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-12 14:15:49,233 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 67 [2020-10-12 14:15:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:15:49,234 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-12 14:15:49,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:15:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-12 14:15:49,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 14:15:49,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:15:49,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:15:49,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:15:49,242 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:15:49,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:15:49,242 INFO L82 PathProgramCache]: Analyzing trace with hash -89553710, now seen corresponding path program 1 times [2020-10-12 14:15:49,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:15:49,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096289422] [2020-10-12 14:15:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:15:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:52,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:52,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 14:15:52,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:15:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2807 [2020-10-12 14:15:52,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:15:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 14:15:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 14:15:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:15:52,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:15:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:52,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:52,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:15:52,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:15:52,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:15:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:15:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:52,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:15:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:52,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:52,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:52,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:15:52,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 14:15:52,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:15:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 14:15:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 14:15:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:15:52,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096289422] [2020-10-12 14:15:52,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:15:52,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:15:52,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199380908] [2020-10-12 14:15:52,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:15:52,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:15:52,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:15:52,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:15:52,757 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-12 14:16:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:00,758 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-12 14:16:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:16:00,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-10-12 14:16:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:00,768 INFO L225 Difference]: With dead ends: 1507 [2020-10-12 14:16:00,769 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 14:16:00,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:16:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 14:16:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-12 14:16:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:16:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-12 14:16:00,798 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 136 [2020-10-12 14:16:00,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:00,799 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-12 14:16:00,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:16:00,799 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-12 14:16:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 14:16:00,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:00,803 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, 1, 1, 1, 1, 1, 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 14:16:00,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:16:00,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:00,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:00,803 INFO L82 PathProgramCache]: Analyzing trace with hash 107276489, now seen corresponding path program 1 times [2020-10-12 14:16:00,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:00,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287546356] [2020-10-12 14:16:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:00,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:02,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:02,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 14:16:02,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:16:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-12 14:16:02,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:16:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:16:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:16:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:02,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:02,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:02,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:16:02,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:16:02,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:02,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:02,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:02,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:02,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:16:02,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:02,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 14:16:02,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:16:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:16:02,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287546356] [2020-10-12 14:16:02,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:16:02,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:16:02,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225795445] [2020-10-12 14:16:02,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:16:02,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:02,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:16:02,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:16:02,589 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 7 states. [2020-10-12 14:16:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:08,553 INFO L93 Difference]: Finished difference Result 1701 states and 2214 transitions. [2020-10-12 14:16:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:16:08,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-12 14:16:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:08,565 INFO L225 Difference]: With dead ends: 1701 [2020-10-12 14:16:08,565 INFO L226 Difference]: Without dead ends: 1016 [2020-10-12 14:16:08,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:16:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-10-12 14:16:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1010. [2020-10-12 14:16:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-12 14:16:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1255 transitions. [2020-10-12 14:16:08,598 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1255 transitions. Word has length 147 [2020-10-12 14:16:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:08,599 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1255 transitions. [2020-10-12 14:16:08,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:16:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1255 transitions. [2020-10-12 14:16:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-12 14:16:08,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:08,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:08,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:16:08,606 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:08,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1165973537, now seen corresponding path program 1 times [2020-10-12 14:16:08,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:08,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626118987] [2020-10-12 14:16:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:08,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:08,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:10,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:12,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:12,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 14:16:12,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:16:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3933 [2020-10-12 14:16:12,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:12,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:16:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:16:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-12 14:16:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:12,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:12,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:12,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:12,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:12,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:12,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 14:16:12,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:16:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:12,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:12,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:13,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:16:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-12 14:16:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:16:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 14:16:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:16:14,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626118987] [2020-10-12 14:16:14,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:16:14,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:16:14,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915173440] [2020-10-12 14:16:14,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:16:14,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:14,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:16:14,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:16:14,093 INFO L87 Difference]: Start difference. First operand 1010 states and 1255 transitions. Second operand 8 states. [2020-10-12 14:16:23,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:23,835 INFO L93 Difference]: Finished difference Result 2383 states and 3112 transitions. [2020-10-12 14:16:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:16:23,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 304 [2020-10-12 14:16:23,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:23,850 INFO L225 Difference]: With dead ends: 2383 [2020-10-12 14:16:23,850 INFO L226 Difference]: Without dead ends: 1645 [2020-10-12 14:16:23,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:16:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-10-12 14:16:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1625. [2020-10-12 14:16:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2020-10-12 14:16:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 1910 transitions. [2020-10-12 14:16:23,902 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 1910 transitions. Word has length 304 [2020-10-12 14:16:23,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:23,903 INFO L479 AbstractCegarLoop]: Abstraction has 1625 states and 1910 transitions. [2020-10-12 14:16:23,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:16:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 1910 transitions. [2020-10-12 14:16:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-12 14:16:23,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:23,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:23,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:16:23,912 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:23,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1036159627, now seen corresponding path program 1 times [2020-10-12 14:16:23,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:23,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462379771] [2020-10-12 14:16:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:24,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:26,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:26,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-12 14:16:26,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:16:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2521 [2020-10-12 14:16:26,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:16:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:16:26,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:26,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:26,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:26,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:16:26,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:27,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:27,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:16:27,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-12 14:16:27,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:16:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:16:27,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:16:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:27,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:27,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:16:27,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 14:16:27,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:16:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:16:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:16:27,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462379771] [2020-10-12 14:16:27,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:16:27,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:16:27,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847547097] [2020-10-12 14:16:27,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:16:27,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:27,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:16:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:16:27,782 INFO L87 Difference]: Start difference. First operand 1625 states and 1910 transitions. Second operand 7 states. [2020-10-12 14:16:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:39,581 INFO L93 Difference]: Finished difference Result 3929 states and 4772 transitions. [2020-10-12 14:16:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:16:39,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-12 14:16:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:39,594 INFO L225 Difference]: With dead ends: 3929 [2020-10-12 14:16:39,595 INFO L226 Difference]: Without dead ends: 2617 [2020-10-12 14:16:39,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:16:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2020-10-12 14:16:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2595. [2020-10-12 14:16:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2595 states. [2020-10-12 14:16:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 2950 transitions. [2020-10-12 14:16:39,662 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 2950 transitions. Word has length 421 [2020-10-12 14:16:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:39,663 INFO L479 AbstractCegarLoop]: Abstraction has 2595 states and 2950 transitions. [2020-10-12 14:16:39,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:16:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 2950 transitions. [2020-10-12 14:16:39,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-12 14:16:39,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:39,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:39,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:16:39,672 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:39,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:39,673 INFO L82 PathProgramCache]: Analyzing trace with hash 496499183, now seen corresponding path program 1 times [2020-10-12 14:16:39,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:39,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448323050] [2020-10-12 14:16:39,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:39,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:42,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:42,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-12 14:16:42,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:16:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2574 [2020-10-12 14:16:42,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:42,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:42,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:16:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:16:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:16:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:42,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:42,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:42,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:42,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:16:42,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:16:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:42,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:42,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:42,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:16:42,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-12 14:16:42,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:16:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:43,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:16:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:43,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:43,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:16:43,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 14:16:43,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:16:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:16:43,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448323050] [2020-10-12 14:16:43,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:16:43,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:16:43,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496178554] [2020-10-12 14:16:43,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:16:43,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:43,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:16:43,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:16:43,781 INFO L87 Difference]: Start difference. First operand 2595 states and 2950 transitions. Second operand 7 states. [2020-10-12 14:16:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:53,820 INFO L93 Difference]: Finished difference Result 6160 states and 7189 transitions. [2020-10-12 14:16:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:16:53,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2020-10-12 14:16:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:53,843 INFO L225 Difference]: With dead ends: 6160 [2020-10-12 14:16:53,843 INFO L226 Difference]: Without dead ends: 4187 [2020-10-12 14:16:53,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:16:53,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2020-10-12 14:16:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 3550. [2020-10-12 14:16:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3550 states. [2020-10-12 14:16:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 3961 transitions. [2020-10-12 14:16:53,952 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 3961 transitions. Word has length 452 [2020-10-12 14:16:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:53,954 INFO L479 AbstractCegarLoop]: Abstraction has 3550 states and 3961 transitions. [2020-10-12 14:16:53,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:16:53,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 3961 transitions. [2020-10-12 14:16:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-12 14:16:53,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:53,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:53,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:16:53,964 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:53,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1835110071, now seen corresponding path program 1 times [2020-10-12 14:16:53,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:53,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351069511] [2020-10-12 14:16:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:54,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:54,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-12 14:16:54,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-12 14:16:54,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:16:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:16:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:54,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:54,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:54,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:54,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:16:54,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:54,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:16:55,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 14:16:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:55,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:16:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:55,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:55,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:16:55,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 14:16:55,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:16:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:16:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 14:16:55,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351069511] [2020-10-12 14:16:55,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:16:55,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:16:55,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587751106] [2020-10-12 14:16:55,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:16:55,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:55,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:16:55,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:16:55,664 INFO L87 Difference]: Start difference. First operand 3550 states and 3961 transitions. Second operand 6 states. [2020-10-12 14:17:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:04,979 INFO L93 Difference]: Finished difference Result 8681 states and 10141 transitions. [2020-10-12 14:17:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:17:04,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 464 [2020-10-12 14:17:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:05,005 INFO L225 Difference]: With dead ends: 8681 [2020-10-12 14:17:05,005 INFO L226 Difference]: Without dead ends: 5446 [2020-10-12 14:17:05,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:17:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2020-10-12 14:17:05,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5442. [2020-10-12 14:17:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5442 states. [2020-10-12 14:17:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5442 states to 5442 states and 6286 transitions. [2020-10-12 14:17:05,132 INFO L78 Accepts]: Start accepts. Automaton has 5442 states and 6286 transitions. Word has length 464 [2020-10-12 14:17:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:05,133 INFO L479 AbstractCegarLoop]: Abstraction has 5442 states and 6286 transitions. [2020-10-12 14:17:05,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:17:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5442 states and 6286 transitions. [2020-10-12 14:17:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-12 14:17:05,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:05,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:05,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:17:05,140 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1734980149, now seen corresponding path program 1 times [2020-10-12 14:17:05,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:05,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075876965] [2020-10-12 14:17:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:07,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:07,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-12 14:17:07,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:17:07,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1923 [2020-10-12 14:17:07,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:17:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:17:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-12 14:17:07,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:07,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:07,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:07,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:07,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:07,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:07,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:17:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:07,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:07,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:07,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:17:07,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:07,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:17:07,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:07,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:07,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:07,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:17:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:07,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:07,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:17:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 14:17:07,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:17:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:17:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:07,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:07,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:17:07,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:07,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 14:17:07,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:17:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 274 proven. 61 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:17:07,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075876965] [2020-10-12 14:17:07,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:07,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:17:07,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683751361] [2020-10-12 14:17:07,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:17:07,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:07,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:17:07,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:17:07,934 INFO L87 Difference]: Start difference. First operand 5442 states and 6286 transitions. Second operand 6 states. [2020-10-12 14:17:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:15,909 INFO L93 Difference]: Finished difference Result 12025 states and 14923 transitions. [2020-10-12 14:17:15,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:17:15,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 543 [2020-10-12 14:17:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:15,945 INFO L225 Difference]: With dead ends: 12025 [2020-10-12 14:17:15,945 INFO L226 Difference]: Without dead ends: 6898 [2020-10-12 14:17:15,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:17:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6898 states. [2020-10-12 14:17:16,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6898 to 6811. [2020-10-12 14:17:16,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6811 states. [2020-10-12 14:17:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6811 states to 6811 states and 8249 transitions. [2020-10-12 14:17:16,190 INFO L78 Accepts]: Start accepts. Automaton has 6811 states and 8249 transitions. Word has length 543 [2020-10-12 14:17:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:16,192 INFO L479 AbstractCegarLoop]: Abstraction has 6811 states and 8249 transitions. [2020-10-12 14:17:16,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:17:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6811 states and 8249 transitions. [2020-10-12 14:17:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-12 14:17:16,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:16,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:16,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:17:16,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:16,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:16,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1837738639, now seen corresponding path program 1 times [2020-10-12 14:17:16,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:16,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218790085] [2020-10-12 14:17:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-12 14:17:18,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:17:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2398 [2020-10-12 14:17:18,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 493 [2020-10-12 14:17:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 14:17:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:18,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:18,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:17:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:19,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:19,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:17:19,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 14:17:19,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:17:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:19,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:19,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:17:19,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:17:19,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:19,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:19,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:17:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:19,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:19,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:19,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 14:17:19,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 14:17:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:17:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-12 14:17:19,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218790085] [2020-10-12 14:17:19,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:19,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:17:19,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646997158] [2020-10-12 14:17:19,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:17:19,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:19,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:17:19,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:17:19,321 INFO L87 Difference]: Start difference. First operand 6811 states and 8249 transitions. Second operand 5 states. [2020-10-12 14:17:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:25,485 INFO L93 Difference]: Finished difference Result 13325 states and 16272 transitions. [2020-10-12 14:17:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:17:25,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 546 [2020-10-12 14:17:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:25,515 INFO L225 Difference]: With dead ends: 13325 [2020-10-12 14:17:25,515 INFO L226 Difference]: Without dead ends: 6819 [2020-10-12 14:17:25,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:17:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6819 states. [2020-10-12 14:17:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6819 to 6811. [2020-10-12 14:17:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6811 states. [2020-10-12 14:17:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6811 states to 6811 states and 8241 transitions. [2020-10-12 14:17:25,673 INFO L78 Accepts]: Start accepts. Automaton has 6811 states and 8241 transitions. Word has length 546 [2020-10-12 14:17:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:25,674 INFO L479 AbstractCegarLoop]: Abstraction has 6811 states and 8241 transitions. [2020-10-12 14:17:25,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:17:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6811 states and 8241 transitions. [2020-10-12 14:17:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-12 14:17:25,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:25,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:25,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:17:25,685 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:25,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:25,685 INFO L82 PathProgramCache]: Analyzing trace with hash 173092307, now seen corresponding path program 1 times [2020-10-12 14:17:25,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:25,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014480641] [2020-10-12 14:17:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-12 14:17:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:17:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-12 14:17:27,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 494 [2020-10-12 14:17:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:17:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:27,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:17:27,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:17:27,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 14:17:27,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:17:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:27,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:17:27,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:17:27,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:17:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 14:17:27,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:27,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:17:27,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:27,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:27,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:17:27,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-12 14:17:27,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014480641] [2020-10-12 14:17:27,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:27,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:17:27,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580148363] [2020-10-12 14:17:27,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:17:27,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:27,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:17:27,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:17:27,819 INFO L87 Difference]: Start difference. First operand 6811 states and 8241 transitions. Second operand 5 states. [2020-10-12 14:17:35,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:35,382 INFO L93 Difference]: Finished difference Result 17100 states and 21504 transitions. [2020-10-12 14:17:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:17:35,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 547 [2020-10-12 14:17:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:35,412 INFO L225 Difference]: With dead ends: 17100 [2020-10-12 14:17:35,412 INFO L226 Difference]: Without dead ends: 9368 [2020-10-12 14:17:35,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:17:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9368 states. [2020-10-12 14:17:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9368 to 9360. [2020-10-12 14:17:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9360 states. [2020-10-12 14:17:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9360 states to 9360 states and 11253 transitions. [2020-10-12 14:17:35,586 INFO L78 Accepts]: Start accepts. Automaton has 9360 states and 11253 transitions. Word has length 547 [2020-10-12 14:17:35,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:35,587 INFO L479 AbstractCegarLoop]: Abstraction has 9360 states and 11253 transitions. [2020-10-12 14:17:35,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:17:35,587 INFO L276 IsEmpty]: Start isEmpty. Operand 9360 states and 11253 transitions. [2020-10-12 14:17:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2020-10-12 14:17:35,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:35,596 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:35,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:17:35,596 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:35,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1807642946, now seen corresponding path program 1 times [2020-10-12 14:17:35,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:35,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717517578] [2020-10-12 14:17:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:36,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:37,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:37,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-12 14:17:37,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:17:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-12 14:17:37,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:37,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:17:37,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 14:17:37,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:37,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:17:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:37,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:37,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:17:37,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:17:37,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:17:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:17:37,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 14:17:37,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:17:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:17:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:37,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:37,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:17:37,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:17:37,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:17:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:17:37,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717517578] [2020-10-12 14:17:37,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:37,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:17:37,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141856761] [2020-10-12 14:17:37,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:17:37,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:37,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:17:37,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:17:37,892 INFO L87 Difference]: Start difference. First operand 9360 states and 11253 transitions. Second operand 7 states. [2020-10-12 14:17:47,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:47,874 INFO L93 Difference]: Finished difference Result 21295 states and 25994 transitions. [2020-10-12 14:17:47,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:17:47,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 550 [2020-10-12 14:17:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:47,940 INFO L225 Difference]: With dead ends: 21295 [2020-10-12 14:17:47,940 INFO L226 Difference]: Without dead ends: 12250 [2020-10-12 14:17:47,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:17:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12250 states. [2020-10-12 14:17:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12250 to 12220. [2020-10-12 14:17:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12220 states. [2020-10-12 14:17:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12220 states to 12220 states and 14530 transitions. [2020-10-12 14:17:48,248 INFO L78 Accepts]: Start accepts. Automaton has 12220 states and 14530 transitions. Word has length 550 [2020-10-12 14:17:48,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:48,250 INFO L479 AbstractCegarLoop]: Abstraction has 12220 states and 14530 transitions. [2020-10-12 14:17:48,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:17:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 12220 states and 14530 transitions. [2020-10-12 14:17:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-12 14:17:48,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:48,264 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:48,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:17:48,264 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:48,265 INFO L82 PathProgramCache]: Analyzing trace with hash 48169461, now seen corresponding path program 1 times [2020-10-12 14:17:48,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:48,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781258757] [2020-10-12 14:17:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:48,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:51,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 593 [2020-10-12 14:17:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:17:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-12 14:17:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:17:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:17:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-12 14:17:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:53,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:53,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:53,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:17:53,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:17:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:53,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:54,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:17:54,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-12 14:17:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-12 14:17:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:17:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:54,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:17:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 14:17:54,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:17:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 14:17:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:54,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-12 14:17:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:54,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:54,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:54,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:54,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:17:54,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:17:54,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 14:17:54,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:17:54,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 189 proven. 150 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-12 14:17:55,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781258757] [2020-10-12 14:17:55,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:55,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:17:55,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007640113] [2020-10-12 14:17:55,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:17:55,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:55,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:17:55,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:17:55,392 INFO L87 Difference]: Start difference. First operand 12220 states and 14530 transitions. Second operand 10 states. [2020-10-12 14:17:59,817 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-12 14:18:03,988 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-12 14:18:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:10,124 INFO L93 Difference]: Finished difference Result 28564 states and 34825 transitions. [2020-10-12 14:18:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 14:18:10,126 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 579 [2020-10-12 14:18:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:10,177 INFO L225 Difference]: With dead ends: 28564 [2020-10-12 14:18:10,177 INFO L226 Difference]: Without dead ends: 16454 [2020-10-12 14:18:10,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2020-10-12 14:18:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16454 states. [2020-10-12 14:18:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16454 to 16049. [2020-10-12 14:18:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16049 states. [2020-10-12 14:18:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16049 states to 16049 states and 19511 transitions. [2020-10-12 14:18:10,503 INFO L78 Accepts]: Start accepts. Automaton has 16049 states and 19511 transitions. Word has length 579 [2020-10-12 14:18:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:10,503 INFO L479 AbstractCegarLoop]: Abstraction has 16049 states and 19511 transitions. [2020-10-12 14:18:10,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:18:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 16049 states and 19511 transitions. [2020-10-12 14:18:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2020-10-12 14:18:10,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:10,518 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:18:10,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:18:10,519 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:10,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1688390126, now seen corresponding path program 1 times [2020-10-12 14:18:10,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:10,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356938194] [2020-10-12 14:18:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:10,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:15,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:15,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 694 [2020-10-12 14:18:15,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:18:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 14:18:15,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 627 [2020-10-12 14:18:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:18:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:15,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:15,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:15,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:15,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:15,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:18:15,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:15,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:15,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:15,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:15,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:18:15,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 14:18:15,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:18:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:16,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:16,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:16,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:18:16,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 14:18:16,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:16,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:18:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:16,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:16,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:18:16,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:18:16,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:18:16,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-12 14:18:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:18:16,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-12 14:18:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:16,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:16,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:18:16,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:18:16,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:18:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 247 proven. 6 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2020-10-12 14:18:16,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356938194] [2020-10-12 14:18:16,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:16,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:18:16,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275159946] [2020-10-12 14:18:16,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:18:16,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:16,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:18:16,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:18:16,516 INFO L87 Difference]: Start difference. First operand 16049 states and 19511 transitions. Second operand 6 states. [2020-10-12 14:18:30,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:30,408 INFO L93 Difference]: Finished difference Result 33978 states and 42634 transitions. [2020-10-12 14:18:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:18:30,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 678 [2020-10-12 14:18:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:30,471 INFO L225 Difference]: With dead ends: 33978 [2020-10-12 14:18:30,471 INFO L226 Difference]: Without dead ends: 19176 [2020-10-12 14:18:30,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:18:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19176 states. [2020-10-12 14:18:30,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19176 to 18534. [2020-10-12 14:18:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18534 states. [2020-10-12 14:18:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18534 states to 18534 states and 22404 transitions. [2020-10-12 14:18:30,793 INFO L78 Accepts]: Start accepts. Automaton has 18534 states and 22404 transitions. Word has length 678 [2020-10-12 14:18:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:30,794 INFO L479 AbstractCegarLoop]: Abstraction has 18534 states and 22404 transitions. [2020-10-12 14:18:30,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:18:30,794 INFO L276 IsEmpty]: Start isEmpty. Operand 18534 states and 22404 transitions. [2020-10-12 14:18:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2020-10-12 14:18:30,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:30,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:18:30,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:18:30,812 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1761212413, now seen corresponding path program 1 times [2020-10-12 14:18:30,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:30,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775291027] [2020-10-12 14:18:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:31,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:33,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:33,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 701 [2020-10-12 14:18:33,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:18:33,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2509 [2020-10-12 14:18:33,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:18:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-12 14:18:33,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:33,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:33,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:33,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:18:33,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:33,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:33,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:33,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:33,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:18:33,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 14:18:33,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:18:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:33,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:33,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:18:33,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:33,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:18:33,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:18:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:18:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:34,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:34,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 14:18:34,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:34,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 14:18:34,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-12 14:18:34,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 513 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:18:34,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775291027] [2020-10-12 14:18:34,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:34,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:18:34,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467295904] [2020-10-12 14:18:34,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:18:34,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:34,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:18:34,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:18:34,468 INFO L87 Difference]: Start difference. First operand 18534 states and 22404 transitions. Second operand 7 states. [2020-10-12 14:18:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:49,278 INFO L93 Difference]: Finished difference Result 39354 states and 49094 transitions. [2020-10-12 14:18:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:18:49,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 687 [2020-10-12 14:18:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:49,344 INFO L225 Difference]: With dead ends: 39354 [2020-10-12 14:18:49,344 INFO L226 Difference]: Without dead ends: 22378 [2020-10-12 14:18:49,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:18:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22378 states. [2020-10-12 14:18:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22378 to 22008. [2020-10-12 14:18:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22008 states. [2020-10-12 14:18:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22008 states to 22008 states and 26920 transitions. [2020-10-12 14:18:49,755 INFO L78 Accepts]: Start accepts. Automaton has 22008 states and 26920 transitions. Word has length 687 [2020-10-12 14:18:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:49,755 INFO L479 AbstractCegarLoop]: Abstraction has 22008 states and 26920 transitions. [2020-10-12 14:18:49,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:18:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 22008 states and 26920 transitions. [2020-10-12 14:18:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2020-10-12 14:18:49,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:49,779 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:49,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 14:18:49,780 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:49,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1304159922, now seen corresponding path program 1 times [2020-10-12 14:18:49,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:49,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450118632] [2020-10-12 14:18:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:50,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:50,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:54,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 713 [2020-10-12 14:18:54,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:18:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 14:18:54,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:18:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 565 [2020-10-12 14:18:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-12 14:18:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:55,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:55,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:55,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:18:55,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:55,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:55,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:55,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:18:55,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:18:55,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:55,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:18:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:55,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:18:55,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:18:55,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:18:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:55,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:55,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 14:18:55,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 14:18:55,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 14:18:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:55,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-12 14:18:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:18:55,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:18:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 14:18:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:18:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:18:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 426 proven. 54 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2020-10-12 14:18:56,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450118632] [2020-10-12 14:18:56,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:56,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:18:56,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262111473] [2020-10-12 14:18:56,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:18:56,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:56,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:18:56,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:18:56,389 INFO L87 Difference]: Start difference. First operand 22008 states and 26920 transitions. Second operand 8 states. [2020-10-12 14:19:12,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:12,229 INFO L93 Difference]: Finished difference Result 47788 states and 60666 transitions. [2020-10-12 14:19:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:19:12,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 697 [2020-10-12 14:19:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:12,307 INFO L225 Difference]: With dead ends: 47788 [2020-10-12 14:19:12,307 INFO L226 Difference]: Without dead ends: 27338 [2020-10-12 14:19:12,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:19:12,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27338 states. [2020-10-12 14:19:12,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27338 to 26947. [2020-10-12 14:19:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26947 states. [2020-10-12 14:19:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26947 states to 26947 states and 33789 transitions. [2020-10-12 14:19:12,810 INFO L78 Accepts]: Start accepts. Automaton has 26947 states and 33789 transitions. Word has length 697 [2020-10-12 14:19:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:12,810 INFO L479 AbstractCegarLoop]: Abstraction has 26947 states and 33789 transitions. [2020-10-12 14:19:12,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:19:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 26947 states and 33789 transitions. [2020-10-12 14:19:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2020-10-12 14:19:12,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:12,834 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:12,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 14:19:12,835 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:12,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1214113174, now seen corresponding path program 1 times [2020-10-12 14:19:12,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:12,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131696986] [2020-10-12 14:19:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:15,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:17,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:17,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 762 [2020-10-12 14:19:17,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:19:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 14:19:17,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:19:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-12 14:19:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-12 14:19:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:18,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:18,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:18,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:18,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:18,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:18,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:19:18,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:19:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:19:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:19:18,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:19:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:18,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:18,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:19:18,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 14:19:18,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:19:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:19:18,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:19:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:19:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:18,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:18,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 14:19:18,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 14:19:18,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:19:18,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:18,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:19:18,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:18,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-12 14:19:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:18,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:18,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:18,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:19:18,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 14:19:18,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:19:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:19:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-12 14:19:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:19,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:19,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 14:19:19,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 14:19:19,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 14:19:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:19:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 493 proven. 62 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-12 14:19:19,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131696986] [2020-10-12 14:19:19,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:19:19,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:19:19,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147399896] [2020-10-12 14:19:19,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:19:19,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:19,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:19:19,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:19:19,659 INFO L87 Difference]: Start difference. First operand 26947 states and 33789 transitions. Second operand 6 states.