/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:48:54,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:48:54,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:48:54,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:48:54,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:48:54,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:48:54,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:48:54,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:48:54,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:48:54,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:48:54,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:48:54,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:48:54,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:48:54,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:48:54,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:48:54,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:48:54,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:48:54,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:48:54,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:48:54,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:48:54,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:48:54,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:48:54,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:48:54,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:48:54,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:48:54,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:48:54,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:48:54,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:48:54,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:48:54,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:48:54,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:48:54,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:48:54,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:48:54,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:48:54,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:48:54,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:48:54,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:48:54,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:48:54,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:48:54,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:48:54,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:48:54,162 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 [2020-10-26 20:48:54,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:48:54,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:48:54,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:48:54,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:48:54,200 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:48:54,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:48:54,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:48:54,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:48:54,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:48:54,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:48:54,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:48:54,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:48:54,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:48:54,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:48:54,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:48:54,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:48:54,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:48:54,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:48:54,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:48:54,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:48:54,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:48:54,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:48:54,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:48:54,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:48:54,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:48:54,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:48:54,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:48:54,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:48:54,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:48:54,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:48:54,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:48:54,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:48:54,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:48:54,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:48:54,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:48:54,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40.c [2020-10-26 20:48:54,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63054a2f5/2ec083d5e6a746b38840249790178683/FLAG8cf1a35c9 [2020-10-26 20:48:55,735 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:48:55,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label40.c [2020-10-26 20:48:55,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63054a2f5/2ec083d5e6a746b38840249790178683/FLAG8cf1a35c9 [2020-10-26 20:48:55,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63054a2f5/2ec083d5e6a746b38840249790178683 [2020-10-26 20:48:55,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:48:55,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:48:55,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:48:55,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:48:55,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:48:55,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:48:55" (1/1) ... [2020-10-26 20:48:55,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1ea5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:55, skipping insertion in model container [2020-10-26 20:48:55,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:48:55" (1/1) ... [2020-10-26 20:48:55,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:48:55,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:48:56,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:48:56,764 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:48:57,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:48:57,145 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:48:57,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57 WrapperNode [2020-10-26 20:48:57,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:48:57,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:48:57,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:48:57,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:48:57,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (1/1) ... [2020-10-26 20:48:57,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (1/1) ... [2020-10-26 20:48:57,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (1/1) ... [2020-10-26 20:48:57,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (1/1) ... [2020-10-26 20:48:57,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (1/1) ... [2020-10-26 20:48:57,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (1/1) ... [2020-10-26 20:48:57,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (1/1) ... [2020-10-26 20:48:57,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:48:57,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:48:57,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:48:57,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:48:57,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (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 [2020-10-26 20:48:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:48:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:48:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:48:57,496 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:48:57,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:48:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:48:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:48:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:48:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:48:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:48:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:48:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:48:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:48:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:48:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:48:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:48:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:48:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:48:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:48:59,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:48:59,677 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:48:59,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:48:59 BoogieIcfgContainer [2020-10-26 20:48:59,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:48:59,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:48:59,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:48:59,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:48:59,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:48:55" (1/3) ... [2020-10-26 20:48:59,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509fc649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:48:59, skipping insertion in model container [2020-10-26 20:48:59,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:48:57" (2/3) ... [2020-10-26 20:48:59,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509fc649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:48:59, skipping insertion in model container [2020-10-26 20:48:59,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:48:59" (3/3) ... [2020-10-26 20:48:59,690 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label40.c [2020-10-26 20:48:59,703 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:48:59,709 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:48:59,723 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:48:59,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:48:59,754 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:48:59,754 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:48:59,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:48:59,754 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:48:59,754 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:48:59,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:48:59,755 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:48:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-26 20:48:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-26 20:48:59,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:48:59,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:48:59,800 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:48:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:48:59,807 INFO L82 PathProgramCache]: Analyzing trace with hash 462655524, now seen corresponding path program 1 times [2020-10-26 20:48:59,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:48:59,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125068925] [2020-10-26 20:48:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:49:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:05,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:05,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 20:49:05,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:49:05,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 20:49:05,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:49:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:49:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-26 20:49:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:49:05,798 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:49:05,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:49:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:05,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:05,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:05,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:49:05,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 20:49:05,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:49:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:49:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:49:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:49:06,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125068925] [2020-10-26 20:49:06,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:49:06,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 20:49:06,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203013826] [2020-10-26 20:49:06,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:49:06,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:49:06,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:49:06,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:49:06,065 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-26 20:49:06,347 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:49:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:49:09,984 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-26 20:49:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:49:09,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-10-26 20:49:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:49:10,004 INFO L225 Difference]: With dead ends: 889 [2020-10-26 20:49:10,004 INFO L226 Difference]: Without dead ends: 481 [2020-10-26 20:49:10,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:49:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-26 20:49:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-26 20:49:10,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-26 20:49:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-26 20:49:10,165 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 191 [2020-10-26 20:49:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:49:10,170 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-26 20:49:10,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:49:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-26 20:49:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-26 20:49:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:49:10,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:49:10,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:49:10,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:49:10,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:49:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1581013971, now seen corresponding path program 1 times [2020-10-26 20:49:10,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:49:10,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480138734] [2020-10-26 20:49:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:49:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:13,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:13,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-26 20:49:13,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:49:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3316 [2020-10-26 20:49:13,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:49:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:49:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 20:49:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:13,943 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:49:13,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:49:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:13,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:49:13,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:49:13,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:49:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:49:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:49:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:49:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:14,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:14,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:49:14,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:49:14,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:49:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:49:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:49:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:49:14,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480138734] [2020-10-26 20:49:14,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:49:14,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:49:14,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159089974] [2020-10-26 20:49:14,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:49:14,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:49:14,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:49:14,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:49:14,257 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 7 states. [2020-10-26 20:49:14,671 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:49:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:49:18,942 INFO L93 Difference]: Finished difference Result 1438 states and 2228 transitions. [2020-10-26 20:49:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:49:18,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-26 20:49:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:49:18,961 INFO L225 Difference]: With dead ends: 1438 [2020-10-26 20:49:18,961 INFO L226 Difference]: Without dead ends: 968 [2020-10-26 20:49:18,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:49:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-26 20:49:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2020-10-26 20:49:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-10-26 20:49:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1453 transitions. [2020-10-26 20:49:19,061 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1453 transitions. Word has length 200 [2020-10-26 20:49:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:49:19,062 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 1453 transitions. [2020-10-26 20:49:19,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:49:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1453 transitions. [2020-10-26 20:49:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-26 20:49:19,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:49:19,072 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:49:19,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:49:19,073 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:49:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:49:19,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1372927461, now seen corresponding path program 1 times [2020-10-26 20:49:19,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:49:19,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055621798] [2020-10-26 20:49:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:49:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:19,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:22,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:22,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-26 20:49:22,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:49:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3112 [2020-10-26 20:49:22,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:49:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:49:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:49:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:22,733 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:49:22,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:49:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:22,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:22,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:49:22,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:22,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:49:22,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:49:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:49:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:49:22,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:49:22,920 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:49:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:49:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:22,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:22,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-26 20:49:22,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 20:49:22,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:49:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:49:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-26 20:49:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:49:23,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055621798] [2020-10-26 20:49:23,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:49:23,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:49:23,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064968784] [2020-10-26 20:49:23,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:49:23,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:49:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:49:23,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:49:23,092 INFO L87 Difference]: Start difference. First operand 949 states and 1453 transitions. Second operand 7 states. [2020-10-26 20:49:23,448 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:49:26,852 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:49:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:49:27,881 INFO L93 Difference]: Finished difference Result 2812 states and 4372 transitions. [2020-10-26 20:49:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:49:27,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-26 20:49:27,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:49:27,894 INFO L225 Difference]: With dead ends: 2812 [2020-10-26 20:49:27,894 INFO L226 Difference]: Without dead ends: 1869 [2020-10-26 20:49:27,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:49:27,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-10-26 20:49:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1821. [2020-10-26 20:49:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-10-26 20:49:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2763 transitions. [2020-10-26 20:49:27,984 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2763 transitions. Word has length 203 [2020-10-26 20:49:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:49:27,985 INFO L481 AbstractCegarLoop]: Abstraction has 1821 states and 2763 transitions. [2020-10-26 20:49:27,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:49:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2763 transitions. [2020-10-26 20:49:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-26 20:49:27,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:49:27,993 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:49:27,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:49:27,993 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:49:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:49:27,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1031555417, now seen corresponding path program 1 times [2020-10-26 20:49:27,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:49:27,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452685716] [2020-10-26 20:49:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:49:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:30,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:30,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:30,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-26 20:49:30,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:49:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2467 [2020-10-26 20:49:30,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:49:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:49:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:49:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:30,930 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:49:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:49:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:30,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:49:30,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:49:30,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:49:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:49:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:49:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:31,136 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:49:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:49:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:31,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:31,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:49:31,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:31,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 20:49:31,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:49:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:49:31,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:49:31,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:49:31,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452685716] [2020-10-26 20:49:31,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:49:31,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:49:31,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983714661] [2020-10-26 20:49:31,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:49:31,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:49:31,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:49:31,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:49:31,374 INFO L87 Difference]: Start difference. First operand 1821 states and 2763 transitions. Second operand 7 states. [2020-10-26 20:49:31,716 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:49:32,358 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:49:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:49:36,046 INFO L93 Difference]: Finished difference Result 5456 states and 8489 transitions. [2020-10-26 20:49:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:49:36,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-26 20:49:36,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:49:36,080 INFO L225 Difference]: With dead ends: 5456 [2020-10-26 20:49:36,080 INFO L226 Difference]: Without dead ends: 3641 [2020-10-26 20:49:36,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:49:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2020-10-26 20:49:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3591. [2020-10-26 20:49:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3591 states. [2020-10-26 20:49:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 4884 transitions. [2020-10-26 20:49:36,265 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 4884 transitions. Word has length 210 [2020-10-26 20:49:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:49:36,266 INFO L481 AbstractCegarLoop]: Abstraction has 3591 states and 4884 transitions. [2020-10-26 20:49:36,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:49:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 4884 transitions. [2020-10-26 20:49:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-26 20:49:36,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:49:36,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:49:36,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:49:36,279 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:49:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:49:36,280 INFO L82 PathProgramCache]: Analyzing trace with hash -203013525, now seen corresponding path program 1 times [2020-10-26 20:49:36,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:49:36,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777211703] [2020-10-26 20:49:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:49:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:37,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:37,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 20:49:37,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:49:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-26 20:49:37,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:49:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:49:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-26 20:49:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:38,090 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:49:38,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:49:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:38,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:38,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:49:38,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:38,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:49:38,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:49:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:49:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:49:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:38,232 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:49:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:49:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:38,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:49:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:49:38,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:38,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:49:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:49:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:49:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:49:38,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777211703] [2020-10-26 20:49:38,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:49:38,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:49:38,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388260588] [2020-10-26 20:49:38,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:49:38,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:49:38,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:49:38,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:49:38,761 INFO L87 Difference]: Start difference. First operand 3591 states and 4884 transitions. Second operand 5 states. [2020-10-26 20:49:39,549 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-26 20:49:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:49:43,002 INFO L93 Difference]: Finished difference Result 7548 states and 10454 transitions. [2020-10-26 20:49:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:49:43,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-26 20:49:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:49:43,055 INFO L225 Difference]: With dead ends: 7548 [2020-10-26 20:49:43,056 INFO L226 Difference]: Without dead ends: 3591 [2020-10-26 20:49:43,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:49:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2020-10-26 20:49:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3587. [2020-10-26 20:49:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3587 states. [2020-10-26 20:49:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 4688 transitions. [2020-10-26 20:49:43,185 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 4688 transitions. Word has length 212 [2020-10-26 20:49:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:49:43,185 INFO L481 AbstractCegarLoop]: Abstraction has 3587 states and 4688 transitions. [2020-10-26 20:49:43,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:49:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 4688 transitions. [2020-10-26 20:49:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-26 20:49:43,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:49:43,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:49:43,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:49:43,198 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:49:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:49:43,198 INFO L82 PathProgramCache]: Analyzing trace with hash -682519833, now seen corresponding path program 1 times [2020-10-26 20:49:43,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:49:43,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144415569] [2020-10-26 20:49:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:49:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:45,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:45,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-26 20:49:45,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:49:45,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2219 [2020-10-26 20:49:45,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:45,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 20:49:45,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:49:45,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-26 20:49:45,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:46,033 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:49:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:49:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:46,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:46,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:49:46,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:49:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:49:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:49:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:49:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:46,189 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:49:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:49:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:46,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:46,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 20:49:46,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 20:49:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:49:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:49:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:49:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:49:46,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144415569] [2020-10-26 20:49:46,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:49:46,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:49:46,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165041700] [2020-10-26 20:49:46,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:49:46,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:49:46,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:49:46,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:49:46,936 INFO L87 Difference]: Start difference. First operand 3587 states and 4688 transitions. Second operand 8 states. [2020-10-26 20:49:47,367 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:49:48,253 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-26 20:49:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:49:53,083 INFO L93 Difference]: Finished difference Result 7568 states and 10075 transitions. [2020-10-26 20:49:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:49:53,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-26 20:49:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:49:53,104 INFO L225 Difference]: With dead ends: 7568 [2020-10-26 20:49:53,104 INFO L226 Difference]: Without dead ends: 3631 [2020-10-26 20:49:53,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:49:53,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-26 20:49:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3587. [2020-10-26 20:49:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3587 states. [2020-10-26 20:49:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 4680 transitions. [2020-10-26 20:49:53,224 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 4680 transitions. Word has length 226 [2020-10-26 20:49:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:49:53,225 INFO L481 AbstractCegarLoop]: Abstraction has 3587 states and 4680 transitions. [2020-10-26 20:49:53,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:49:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 4680 transitions. [2020-10-26 20:49:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-26 20:49:53,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:49:53,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:49:53,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:49:53,237 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:49:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:49:53,238 INFO L82 PathProgramCache]: Analyzing trace with hash 414207636, now seen corresponding path program 1 times [2020-10-26 20:49:53,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:49:53,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177966694] [2020-10-26 20:49:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:49:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:57,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:57,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-26 20:49:57,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:49:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3760 [2020-10-26 20:49:57,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 20:49:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:49:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 20:49:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:57,478 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:49:57,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:49:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:57,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:57,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:49:57,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:57,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:49:57,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:49:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:49:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:49:57,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:57,661 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:49:57,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:49:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:57,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:49:57,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 20:49:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:49:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:49:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:49:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:49:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:49:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:49:57,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:49:57,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 20:49:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:49:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 20:49:57,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:49:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:49:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:49:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:49:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:49:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 20:49:58,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177966694] [2020-10-26 20:49:58,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:49:58,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:49:58,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504493595] [2020-10-26 20:49:58,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 20:49:58,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:49:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 20:49:58,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:49:58,133 INFO L87 Difference]: Start difference. First operand 3587 states and 4680 transitions. Second operand 10 states. [2020-10-26 20:49:58,513 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:49:59,057 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-26 20:50:00,665 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2020-10-26 20:50:05,294 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-26 20:50:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:50:09,947 INFO L93 Difference]: Finished difference Result 14552 states and 20385 transitions. [2020-10-26 20:50:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 20:50:09,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 237 [2020-10-26 20:50:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:50:10,035 INFO L225 Difference]: With dead ends: 14552 [2020-10-26 20:50:10,035 INFO L226 Difference]: Without dead ends: 10971 [2020-10-26 20:50:10,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:50:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2020-10-26 20:50:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 10728. [2020-10-26 20:50:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10728 states. [2020-10-26 20:50:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10728 states to 10728 states and 14169 transitions. [2020-10-26 20:50:10,465 INFO L78 Accepts]: Start accepts. Automaton has 10728 states and 14169 transitions. Word has length 237 [2020-10-26 20:50:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:50:10,465 INFO L481 AbstractCegarLoop]: Abstraction has 10728 states and 14169 transitions. [2020-10-26 20:50:10,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 20:50:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 10728 states and 14169 transitions. [2020-10-26 20:50:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-26 20:50:10,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:50:10,494 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:50:10,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:50:10,495 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:50:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:50:10,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1069474839, now seen corresponding path program 1 times [2020-10-26 20:50:10,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:50:10,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113412248] [2020-10-26 20:50:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:50:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:15,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:15,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-26 20:50:15,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:50:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 20:50:15,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:50:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:50:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:50:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:15,962 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:50:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:50:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:15,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:15,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:50:15,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:15,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:50:15,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:15,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:50:15,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:50:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:50:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:16,152 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:50:16,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:50:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:16,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:16,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:50:16,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 20:50:16,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:50:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:50:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:50:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 20:50:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:16,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:50:16,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:16,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 20:50:16,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:50:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:50:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:50:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 45 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:50:16,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113412248] [2020-10-26 20:50:16,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:50:16,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:50:16,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821114331] [2020-10-26 20:50:16,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:50:16,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:50:16,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:50:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:50:16,481 INFO L87 Difference]: Start difference. First operand 10728 states and 14169 transitions. Second operand 7 states. [2020-10-26 20:50:16,827 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:50:19,570 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:50:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:50:21,470 INFO L93 Difference]: Finished difference Result 27085 states and 36382 transitions. [2020-10-26 20:50:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:50:21,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-26 20:50:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:50:21,538 INFO L225 Difference]: With dead ends: 27085 [2020-10-26 20:50:21,538 INFO L226 Difference]: Without dead ends: 16367 [2020-10-26 20:50:21,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:50:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16367 states. [2020-10-26 20:50:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16367 to 16198. [2020-10-26 20:50:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16198 states. [2020-10-26 20:50:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16198 states to 16198 states and 21453 transitions. [2020-10-26 20:50:22,041 INFO L78 Accepts]: Start accepts. Automaton has 16198 states and 21453 transitions. Word has length 242 [2020-10-26 20:50:22,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:50:22,042 INFO L481 AbstractCegarLoop]: Abstraction has 16198 states and 21453 transitions. [2020-10-26 20:50:22,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:50:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 16198 states and 21453 transitions. [2020-10-26 20:50:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-26 20:50:22,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:50:22,082 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:50:22,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:50:22,083 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:50:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:50:22,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1659722300, now seen corresponding path program 1 times [2020-10-26 20:50:22,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:50:22,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848377514] [2020-10-26 20:50:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:50:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:27,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-26 20:50:27,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:50:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-26 20:50:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:50:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:50:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:50:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:27,612 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:50:27,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:50:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:27,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:27,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:50:27,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:50:27,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:50:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:50:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:50:27,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:27,788 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:50:27,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:50:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:27,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:27,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:50:27,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 20:50:27,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:50:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:50:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:50:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:50:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:27,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:28,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:28,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:50:28,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:28,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 20:50:28,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:50:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:50:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:50:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 20:50:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:28,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:28,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:28,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:50:28,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:28,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:50:28,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:50:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:50:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:50:28,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 58 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:50:28,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848377514] [2020-10-26 20:50:28,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:50:28,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:50:28,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127631286] [2020-10-26 20:50:28,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:50:28,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:50:28,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:50:28,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:50:28,295 INFO L87 Difference]: Start difference. First operand 16198 states and 21453 transitions. Second operand 8 states. [2020-10-26 20:50:28,720 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 20:50:29,952 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:50:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:50:33,473 INFO L93 Difference]: Finished difference Result 40546 states and 53832 transitions. [2020-10-26 20:50:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 20:50:33,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 253 [2020-10-26 20:50:33,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:50:33,553 INFO L225 Difference]: With dead ends: 40546 [2020-10-26 20:50:33,554 INFO L226 Difference]: Without dead ends: 24358 [2020-10-26 20:50:33,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-26 20:50:33,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24358 states. [2020-10-26 20:50:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24358 to 23852. [2020-10-26 20:50:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23852 states. [2020-10-26 20:50:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23852 states to 23852 states and 31304 transitions. [2020-10-26 20:50:34,249 INFO L78 Accepts]: Start accepts. Automaton has 23852 states and 31304 transitions. Word has length 253 [2020-10-26 20:50:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:50:34,250 INFO L481 AbstractCegarLoop]: Abstraction has 23852 states and 31304 transitions. [2020-10-26 20:50:34,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:50:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 23852 states and 31304 transitions. [2020-10-26 20:50:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-26 20:50:34,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:50:34,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:50:34,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:50:34,303 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:50:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:50:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1185159141, now seen corresponding path program 1 times [2020-10-26 20:50:34,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:50:34,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373730749] [2020-10-26 20:50:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:50:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:36,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:36,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-26 20:50:36,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:50:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2155 [2020-10-26 20:50:36,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:50:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:50:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 20:50:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:36,882 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:50:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:50:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:36,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:36,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:50:36,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:50:36,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:50:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:50:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:50:36,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:37,065 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:50:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:50:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:37,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:37,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-26 20:50:37,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-26 20:50:37,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:50:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:50:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 20:50:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:50:37,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373730749] [2020-10-26 20:50:37,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:50:37,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:50:37,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892215887] [2020-10-26 20:50:37,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:50:37,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:50:37,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:50:37,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:50:37,719 INFO L87 Difference]: Start difference. First operand 23852 states and 31304 transitions. Second operand 7 states. [2020-10-26 20:50:38,147 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 20:50:39,453 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:50:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:50:43,459 INFO L93 Difference]: Finished difference Result 64343 states and 87037 transitions. [2020-10-26 20:50:43,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:50:43,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-26 20:50:43,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:50:43,625 INFO L225 Difference]: With dead ends: 64343 [2020-10-26 20:50:43,626 INFO L226 Difference]: Without dead ends: 40501 [2020-10-26 20:50:43,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:50:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40501 states. [2020-10-26 20:50:44,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40501 to 39938. [2020-10-26 20:50:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39938 states. [2020-10-26 20:50:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39938 states to 39938 states and 51487 transitions. [2020-10-26 20:50:44,963 INFO L78 Accepts]: Start accepts. Automaton has 39938 states and 51487 transitions. Word has length 255 [2020-10-26 20:50:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:50:44,964 INFO L481 AbstractCegarLoop]: Abstraction has 39938 states and 51487 transitions. [2020-10-26 20:50:44,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:50:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 39938 states and 51487 transitions. [2020-10-26 20:50:45,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-26 20:50:45,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:50:45,038 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:50:45,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:50:45,038 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:50:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:50:45,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1203869432, now seen corresponding path program 1 times [2020-10-26 20:50:45,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:50:45,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594324621] [2020-10-26 20:50:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:50:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:50,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 20:50:50,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:50:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 20:50:50,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:50:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:50:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 20:50:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:50,467 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:50:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:50:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:50:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:50:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:50:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:50:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:50:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:50,656 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:50:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:50:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:50,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:50:50,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 20:50:50,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:50:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:50:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:50:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 20:50:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:50,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:50,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:50:50,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:50:50,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:50:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-26 20:50:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:50:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:50,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 20:50:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:50,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:50,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:50:50,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:50:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:50:50,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:50:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:50:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:50:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:50:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 59 proven. 24 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-26 20:50:50,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594324621] [2020-10-26 20:50:50,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:50:50,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:50:50,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787482914] [2020-10-26 20:50:50,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:50:50,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:50:50,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:50:50,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:50:50,898 INFO L87 Difference]: Start difference. First operand 39938 states and 51487 transitions. Second operand 7 states. [2020-10-26 20:50:51,276 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:50:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:50:53,619 INFO L93 Difference]: Finished difference Result 73584 states and 95591 transitions. [2020-10-26 20:50:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:50:53,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-26 20:50:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:50:53,743 INFO L225 Difference]: With dead ends: 73584 [2020-10-26 20:50:53,743 INFO L226 Difference]: Without dead ends: 33656 [2020-10-26 20:50:53,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:50:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33656 states. [2020-10-26 20:50:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33656 to 33542. [2020-10-26 20:50:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33542 states. [2020-10-26 20:50:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33542 states to 33542 states and 42501 transitions. [2020-10-26 20:50:54,704 INFO L78 Accepts]: Start accepts. Automaton has 33542 states and 42501 transitions. Word has length 259 [2020-10-26 20:50:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:50:54,704 INFO L481 AbstractCegarLoop]: Abstraction has 33542 states and 42501 transitions. [2020-10-26 20:50:54,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:50:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 33542 states and 42501 transitions. [2020-10-26 20:50:54,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-26 20:50:54,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:50:54,731 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:50:54,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:50:54,731 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:50:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:50:54,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1222462930, now seen corresponding path program 1 times [2020-10-26 20:50:54,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:50:54,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52954525] [2020-10-26 20:50:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:50:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:50:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:54,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:50:59,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:50:59,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-26 20:50:59,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:50:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 20:50:59,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:50:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:50:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:50:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 20:50:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:00,262 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:51:00,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:51:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:51:00,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:51:00,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:51:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:51:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:51:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:00,492 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:51:00,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:51:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:00,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:00,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 20:51:00,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:00,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 20:51:00,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:51:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:51:00,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 20:51:00,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:00,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 20:51:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:00,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:00,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:51:00,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:00,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:51:00,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:51:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:51:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:51:00,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 68 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:51:00,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52954525] [2020-10-26 20:51:00,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:51:00,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:51:00,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017444964] [2020-10-26 20:51:00,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:51:00,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:51:00,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:51:00,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:51:00,873 INFO L87 Difference]: Start difference. First operand 33542 states and 42501 transitions. Second operand 7 states. [2020-10-26 20:51:01,282 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-26 20:51:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:51:05,405 INFO L93 Difference]: Finished difference Result 99155 states and 128615 transitions. [2020-10-26 20:51:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:51:05,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-26 20:51:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:51:05,640 INFO L225 Difference]: With dead ends: 99155 [2020-10-26 20:51:05,640 INFO L226 Difference]: Without dead ends: 65623 [2020-10-26 20:51:05,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:51:05,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65623 states. [2020-10-26 20:51:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65623 to 65272. [2020-10-26 20:51:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65272 states. [2020-10-26 20:51:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65272 states to 65272 states and 84329 transitions. [2020-10-26 20:51:07,632 INFO L78 Accepts]: Start accepts. Automaton has 65272 states and 84329 transitions. Word has length 265 [2020-10-26 20:51:07,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:51:07,632 INFO L481 AbstractCegarLoop]: Abstraction has 65272 states and 84329 transitions. [2020-10-26 20:51:07,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:51:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 65272 states and 84329 transitions. [2020-10-26 20:51:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-26 20:51:07,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:51:07,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:51:07,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:51:07,663 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:51:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:51:07,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1295317106, now seen corresponding path program 1 times [2020-10-26 20:51:07,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:51:07,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797878697] [2020-10-26 20:51:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:51:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:09,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3765 [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 20:51:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:11,898 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:51:11,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:51:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:11,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:11,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:11,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:51:11,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:51:11,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:11,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:51:11,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:51:11,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:51:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:12,088 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:51:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:51:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:12,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:51:12,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:51:12,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:51:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:51:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:51:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:51:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:12,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:12,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-26 20:51:12,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-26 20:51:12,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:51:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:51:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 20:51:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 70 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:51:12,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797878697] [2020-10-26 20:51:12,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:51:12,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:51:12,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557503974] [2020-10-26 20:51:12,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:51:12,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:51:12,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:51:12,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:51:12,690 INFO L87 Difference]: Start difference. First operand 65272 states and 84329 transitions. Second operand 8 states. [2020-10-26 20:51:13,112 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:51:15,104 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-26 20:51:18,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:51:18,576 INFO L93 Difference]: Finished difference Result 133805 states and 181753 transitions. [2020-10-26 20:51:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:51:18,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 266 [2020-10-26 20:51:18,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:51:19,155 INFO L225 Difference]: With dead ends: 133805 [2020-10-26 20:51:19,155 INFO L226 Difference]: Without dead ends: 79042 [2020-10-26 20:51:19,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:51:19,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79042 states. [2020-10-26 20:51:21,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79042 to 77594. [2020-10-26 20:51:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77594 states. [2020-10-26 20:51:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77594 states to 77594 states and 101678 transitions. [2020-10-26 20:51:21,689 INFO L78 Accepts]: Start accepts. Automaton has 77594 states and 101678 transitions. Word has length 266 [2020-10-26 20:51:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:51:21,690 INFO L481 AbstractCegarLoop]: Abstraction has 77594 states and 101678 transitions. [2020-10-26 20:51:21,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:51:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 77594 states and 101678 transitions. [2020-10-26 20:51:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-26 20:51:21,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:51:21,731 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:51:21,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:51:21,732 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:51:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:51:21,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1846246172, now seen corresponding path program 1 times [2020-10-26 20:51:21,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:51:21,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489141981] [2020-10-26 20:51:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:51:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:26,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:26,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-26 20:51:26,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:51:26,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 20:51:26,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:51:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:51:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 20:51:26,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:27,248 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:51:27,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:51:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:27,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:27,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:51:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:51:27,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:51:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:51:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:51:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:27,457 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:51:27,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:51:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:27,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:27,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:27,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:51:27,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 20:51:27,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:51:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:51:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 20:51:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:51:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:27,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:27,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:51:27,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:51:27,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:51:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-26 20:51:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:51:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 71 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:51:27,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489141981] [2020-10-26 20:51:27,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:51:27,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:51:27,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141426761] [2020-10-26 20:51:27,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:51:27,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:51:27,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:51:27,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:51:27,760 INFO L87 Difference]: Start difference. First operand 77594 states and 101678 transitions. Second operand 7 states. [2020-10-26 20:51:28,182 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:51:29,615 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:51:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:51:33,930 INFO L93 Difference]: Finished difference Result 209946 states and 280528 transitions. [2020-10-26 20:51:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:51:33,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-26 20:51:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:51:34,416 INFO L225 Difference]: With dead ends: 209946 [2020-10-26 20:51:34,417 INFO L226 Difference]: Without dead ends: 132774 [2020-10-26 20:51:34,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:51:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132774 states. [2020-10-26 20:51:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132774 to 132149. [2020-10-26 20:51:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132149 states. [2020-10-26 20:51:38,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132149 states to 132149 states and 169727 transitions. [2020-10-26 20:51:38,531 INFO L78 Accepts]: Start accepts. Automaton has 132149 states and 169727 transitions. Word has length 268 [2020-10-26 20:51:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:51:38,532 INFO L481 AbstractCegarLoop]: Abstraction has 132149 states and 169727 transitions. [2020-10-26 20:51:38,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:51:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 132149 states and 169727 transitions. [2020-10-26 20:51:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-26 20:51:38,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:51:38,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:51:38,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:51:38,866 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:51:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:51:38,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1849336963, now seen corresponding path program 1 times [2020-10-26 20:51:38,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:51:38,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956299540] [2020-10-26 20:51:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:51:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:42,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:42,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-26 20:51:42,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:51:42,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3220 [2020-10-26 20:51:42,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 20:51:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:51:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-26 20:51:42,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:42,997 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 20:51:43,152 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 20:51:43,573 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2020-10-26 20:51:43,903 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-10-26 20:51:44,236 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-10-26 20:51:44,542 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-10-26 20:51:44,827 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2020-10-26 20:51:45,033 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-26 20:51:45,439 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:51:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:51:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:45,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:45,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:51:45,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:45,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:51:45,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:51:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:51:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:51:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:45,661 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:51:45,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:51:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:51:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:51:46,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:51:46,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:51:46,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:51:46,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-26 20:51:46,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:51:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:51:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:51:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 20:51:46,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:51:46,689 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-26 20:51:47,106 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-10-26 20:51:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:51:48,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956299540] [2020-10-26 20:51:48,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:51:48,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 20:51:48,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761693697] [2020-10-26 20:51:48,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 20:51:48,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:51:48,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 20:51:48,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:51:48,656 INFO L87 Difference]: Start difference. First operand 132149 states and 169727 transitions. Second operand 16 states. [2020-10-26 20:51:49,279 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-26 20:51:49,657 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-10-26 20:51:52,279 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 66 [2020-10-26 20:51:52,710 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2020-10-26 20:51:53,266 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2020-10-26 20:51:55,038 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 246 DAG size of output: 206 [2020-10-26 20:51:56,979 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 266 DAG size of output: 226 [2020-10-26 20:52:00,783 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 271 DAG size of output: 223 [2020-10-26 20:52:04,535 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 274 DAG size of output: 220 [2020-10-26 20:52:08,354 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 274 DAG size of output: 217 [2020-10-26 20:52:13,841 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 277 DAG size of output: 214