/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem15_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:54:54,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:54:54,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:54:54,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:54:54,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:54:54,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:54:54,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:54:54,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:54:54,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:54:54,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:54:54,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:54:54,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:54:54,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:54:54,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:54:54,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:54:54,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:54:54,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:54:54,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:54:54,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:54:54,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:54:54,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:54:54,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:54:54,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:54:54,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:54:54,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:54:54,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:54:54,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:54:54,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:54:54,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:54:54,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:54:54,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:54:54,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:54:54,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:54:54,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:54:54,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:54:54,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:54:54,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:54:54,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:54:54,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:54:54,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:54:54,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:54:54,473 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 [2020-10-29 07:54:54,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:54:54,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:54:54,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:54:54,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:54:54,528 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:54:54,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:54:54,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:54:54,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:54:54,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:54:54,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:54:54,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:54:54,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:54:54,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:54:54,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:54:54,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:54:54,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:54:54,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:54:54,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:54:54,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:54:54,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:54:54,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:54:54,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:54:54,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:54:54,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:54:54,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:54:54,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:54:54,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:54:54,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:54:54,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:54:54,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:54:55,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:54:55,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:54:55,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:54:55,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:54:55,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:54:55,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59.c [2020-10-29 07:54:55,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d044fdf1/2852ced4e7d742cfa70d2ba92b2faaad/FLAG33854b724 [2020-10-29 07:54:56,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:54:56,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label59.c [2020-10-29 07:54:56,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d044fdf1/2852ced4e7d742cfa70d2ba92b2faaad/FLAG33854b724 [2020-10-29 07:54:56,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d044fdf1/2852ced4e7d742cfa70d2ba92b2faaad [2020-10-29 07:54:56,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:54:56,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:54:56,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:54:56,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:54:56,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:54:56,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:54:56" (1/1) ... [2020-10-29 07:54:56,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc01cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:56, skipping insertion in model container [2020-10-29 07:54:56,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:54:56" (1/1) ... [2020-10-29 07:54:56,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:54:56,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:54:57,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:54:57,146 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:54:57,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:54:57,463 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:54:57,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57 WrapperNode [2020-10-29 07:54:57,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:54:57,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:54:57,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:54:57,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:54:57,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (1/1) ... [2020-10-29 07:54:57,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (1/1) ... [2020-10-29 07:54:57,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (1/1) ... [2020-10-29 07:54:57,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (1/1) ... [2020-10-29 07:54:57,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (1/1) ... [2020-10-29 07:54:57,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (1/1) ... [2020-10-29 07:54:57,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (1/1) ... [2020-10-29 07:54:57,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:54:57,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:54:57,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:54:57,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:54:57,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (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 [2020-10-29 07:54:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:54:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:54:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:54:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:54:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:54:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:54:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:54:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:54:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:54:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:54:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:54:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:54:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:54:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:54:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:54:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:54:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:54:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:54:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:54:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:54:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:55:01,802 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:55:01,802 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:55:01,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:55:01 BoogieIcfgContainer [2020-10-29 07:55:01,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:55:01,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:55:01,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:55:01,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:55:01,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:54:56" (1/3) ... [2020-10-29 07:55:01,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9e9aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:55:01, skipping insertion in model container [2020-10-29 07:55:01,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:57" (2/3) ... [2020-10-29 07:55:01,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9e9aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:55:01, skipping insertion in model container [2020-10-29 07:55:01,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:55:01" (3/3) ... [2020-10-29 07:55:01,815 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label59.c [2020-10-29 07:55:01,829 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:55:01,835 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:55:01,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:55:01,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:55:01,884 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:55:01,884 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:55:01,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:55:01,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:55:01,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:55:01,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:55:01,885 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:55:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:55:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 07:55:01,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:01,927 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] [2020-10-29 07:55:01,927 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash 733240863, now seen corresponding path program 1 times [2020-10-29 07:55:01,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:01,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568718238] [2020-10-29 07:55:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:02,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:02,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:55:02,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-29 07:55:02,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:02,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 07:55:02,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:55:03,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:03,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:03,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:03,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:03,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:55:03,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:03,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:03,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:03,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568718238] [2020-10-29 07:55:03,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:03,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:55:03,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297116600] [2020-10-29 07:55:03,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:55:03,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:03,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:55:03,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:55:03,244 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:55:03,441 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:55:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:12,104 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-29 07:55:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:55:12,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-29 07:55:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:12,132 INFO L225 Difference]: With dead ends: 1250 [2020-10-29 07:55:12,133 INFO L226 Difference]: Without dead ends: 730 [2020-10-29 07:55:12,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:55:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-29 07:55:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-29 07:55:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-29 07:55:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-29 07:55:12,313 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 61 [2020-10-29 07:55:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:12,314 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-29 07:55:12,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:55:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-29 07:55:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 07:55:12,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:12,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:12,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:55:12,323 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:12,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1522390967, now seen corresponding path program 1 times [2020-10-29 07:55:12,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:12,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712636307] [2020-10-29 07:55:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:15,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:15,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 07:55:15,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:55:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3191 [2020-10-29 07:55:15,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:15,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:55:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 07:55:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:55:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:15,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:15,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:15,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:15,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:55:15,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:15,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:15,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:15,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:15,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:55:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:55:15,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:55:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:15,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712636307] [2020-10-29 07:55:15,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:15,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:55:15,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682601996] [2020-10-29 07:55:15,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:55:15,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:15,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:55:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:55:15,972 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 5 states. [2020-10-29 07:55:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:25,170 INFO L93 Difference]: Finished difference Result 2065 states and 3552 transitions. [2020-10-29 07:55:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:55:25,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-29 07:55:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:25,181 INFO L225 Difference]: With dead ends: 2065 [2020-10-29 07:55:25,182 INFO L226 Difference]: Without dead ends: 1358 [2020-10-29 07:55:25,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:55:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2020-10-29 07:55:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1353. [2020-10-29 07:55:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2020-10-29 07:55:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2092 transitions. [2020-10-29 07:55:25,243 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2092 transitions. Word has length 130 [2020-10-29 07:55:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:25,244 INFO L481 AbstractCegarLoop]: Abstraction has 1353 states and 2092 transitions. [2020-10-29 07:55:25,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:55:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2092 transitions. [2020-10-29 07:55:25,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 07:55:25,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:25,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:25,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:55:25,249 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:25,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:25,250 INFO L82 PathProgramCache]: Analyzing trace with hash 313753430, now seen corresponding path program 1 times [2020-10-29 07:55:25,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:25,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856596178] [2020-10-29 07:55:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:26,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:26,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:55:26,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-29 07:55:26,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:26,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:55:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:26,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:26,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:26,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:55:26,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:26,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:26,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:26,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:26,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:55:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 07:55:26,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:26,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:55:26,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:26,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856596178] [2020-10-29 07:55:26,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:26,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:55:26,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836736460] [2020-10-29 07:55:26,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:26,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:26,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:26,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:26,904 INFO L87 Difference]: Start difference. First operand 1353 states and 2092 transitions. Second operand 7 states. [2020-10-29 07:55:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:37,699 INFO L93 Difference]: Finished difference Result 4018 states and 6366 transitions. [2020-10-29 07:55:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:55:37,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-29 07:55:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:37,724 INFO L225 Difference]: With dead ends: 4018 [2020-10-29 07:55:37,724 INFO L226 Difference]: Without dead ends: 2671 [2020-10-29 07:55:37,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2020-10-29 07:55:37,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2633. [2020-10-29 07:55:37,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-10-29 07:55:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3613 transitions. [2020-10-29 07:55:37,852 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3613 transitions. Word has length 151 [2020-10-29 07:55:37,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:37,854 INFO L481 AbstractCegarLoop]: Abstraction has 2633 states and 3613 transitions. [2020-10-29 07:55:37,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3613 transitions. [2020-10-29 07:55:37,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 07:55:37,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:37,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:37,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:55:37,865 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:37,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:37,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1196717798, now seen corresponding path program 1 times [2020-10-29 07:55:37,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:37,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553571307] [2020-10-29 07:55:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:39,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:39,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 07:55:39,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-29 07:55:39,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:39,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 07:55:39,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:39,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:39,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:39,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:39,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:55:39,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:39,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:39,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:39,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:39,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:55:39,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:39,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 07:55:39,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:39,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 07:55:39,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:39,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553571307] [2020-10-29 07:55:39,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:39,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:55:39,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446343287] [2020-10-29 07:55:39,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:39,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:39,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:39,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:39,731 INFO L87 Difference]: Start difference. First operand 2633 states and 3613 transitions. Second operand 7 states. [2020-10-29 07:55:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:50,325 INFO L93 Difference]: Finished difference Result 5629 states and 7745 transitions. [2020-10-29 07:55:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:55:50,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-29 07:55:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:50,352 INFO L225 Difference]: With dead ends: 5629 [2020-10-29 07:55:50,352 INFO L226 Difference]: Without dead ends: 3002 [2020-10-29 07:55:50,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:55:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-10-29 07:55:50,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2963. [2020-10-29 07:55:50,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2963 states. [2020-10-29 07:55:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4030 transitions. [2020-10-29 07:55:50,475 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4030 transitions. Word has length 175 [2020-10-29 07:55:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:50,475 INFO L481 AbstractCegarLoop]: Abstraction has 2963 states and 4030 transitions. [2020-10-29 07:55:50,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4030 transitions. [2020-10-29 07:55:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-29 07:55:50,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:50,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:55:50,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:55:50,482 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:50,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:50,483 INFO L82 PathProgramCache]: Analyzing trace with hash 402306154, now seen corresponding path program 1 times [2020-10-29 07:55:50,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:50,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265574270] [2020-10-29 07:55:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:51,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:51,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 07:55:51,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-29 07:55:51,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:51,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:55:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:52,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:52,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:52,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:52,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:52,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:55:52,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:52,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:52,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:52,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 07:55:52,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 07:55:52,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:52,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 07:55:52,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:52,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265574270] [2020-10-29 07:55:52,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:52,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:55:52,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623812966] [2020-10-29 07:55:52,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:52,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:52,609 INFO L87 Difference]: Start difference. First operand 2963 states and 4030 transitions. Second operand 7 states. [2020-10-29 07:56:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:04,012 INFO L93 Difference]: Finished difference Result 6668 states and 9589 transitions. [2020-10-29 07:56:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:56:04,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-29 07:56:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:04,045 INFO L225 Difference]: With dead ends: 6668 [2020-10-29 07:56:04,045 INFO L226 Difference]: Without dead ends: 4018 [2020-10-29 07:56:04,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:56:04,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2020-10-29 07:56:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 3632. [2020-10-29 07:56:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3632 states. [2020-10-29 07:56:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 4828 transitions. [2020-10-29 07:56:04,189 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 4828 transitions. Word has length 177 [2020-10-29 07:56:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:04,189 INFO L481 AbstractCegarLoop]: Abstraction has 3632 states and 4828 transitions. [2020-10-29 07:56:04,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 4828 transitions. [2020-10-29 07:56:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-29 07:56:04,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:04,197 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:56:04,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:56:04,197 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:04,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1062871464, now seen corresponding path program 1 times [2020-10-29 07:56:04,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:04,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098673786] [2020-10-29 07:56:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:06,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 07:56:06,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2329 [2020-10-29 07:56:06,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:06,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:56:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:56:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-29 07:56:06,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:06,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:06,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:06,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:56:06,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:06,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:56:06,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:07,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:07,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:56:07,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:07,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-29 07:56:07,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:07,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:56:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 07:56:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:56:08,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098673786] [2020-10-29 07:56:08,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:08,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:08,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99847978] [2020-10-29 07:56:08,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:56:08,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:08,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:56:08,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:56:08,277 INFO L87 Difference]: Start difference. First operand 3632 states and 4828 transitions. Second operand 8 states. [2020-10-29 07:56:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:19,185 INFO L93 Difference]: Finished difference Result 8277 states and 10888 transitions. [2020-10-29 07:56:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:56:19,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 298 [2020-10-29 07:56:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:19,211 INFO L225 Difference]: With dead ends: 8277 [2020-10-29 07:56:19,212 INFO L226 Difference]: Without dead ends: 4614 [2020-10-29 07:56:19,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:56:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2020-10-29 07:56:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4564. [2020-10-29 07:56:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2020-10-29 07:56:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 5901 transitions. [2020-10-29 07:56:19,399 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 5901 transitions. Word has length 298 [2020-10-29 07:56:19,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:19,400 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 5901 transitions. [2020-10-29 07:56:19,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:56:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 5901 transitions. [2020-10-29 07:56:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 07:56:19,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:19,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:56:19,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:56:19,410 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2017205874, now seen corresponding path program 1 times [2020-10-29 07:56:19,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:19,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738520258] [2020-10-29 07:56:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:22,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:24,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:24,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 07:56:24,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:56:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 07:56:24,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:24,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:56:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:56:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 07:56:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:24,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:24,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:24,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:56:24,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:24,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:24,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:25,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:25,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:25,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:56:25,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 07:56:25,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:25,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:56:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:56:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:25,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:26,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:26,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 07:56:26,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-29 07:56:26,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:26,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 07:56:26,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 171 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:56:26,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738520258] [2020-10-29 07:56:26,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:26,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:56:26,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358440113] [2020-10-29 07:56:26,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:56:26,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:26,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:56:26,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:56:26,470 INFO L87 Difference]: Start difference. First operand 4564 states and 5901 transitions. Second operand 8 states. [2020-10-29 07:56:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:41,185 INFO L93 Difference]: Finished difference Result 9546 states and 12857 transitions. [2020-10-29 07:56:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:56:41,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2020-10-29 07:56:41,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:41,212 INFO L225 Difference]: With dead ends: 9546 [2020-10-29 07:56:41,212 INFO L226 Difference]: Without dead ends: 4945 [2020-10-29 07:56:41,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:56:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2020-10-29 07:56:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4863. [2020-10-29 07:56:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4863 states. [2020-10-29 07:56:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 5778 transitions. [2020-10-29 07:56:41,362 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 5778 transitions. Word has length 313 [2020-10-29 07:56:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:41,363 INFO L481 AbstractCegarLoop]: Abstraction has 4863 states and 5778 transitions. [2020-10-29 07:56:41,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:56:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 5778 transitions. [2020-10-29 07:56:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 07:56:41,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:41,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:56:41,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:56:41,370 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash -782344045, now seen corresponding path program 1 times [2020-10-29 07:56:41,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:41,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083997072] [2020-10-29 07:56:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:42,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:42,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-29 07:56:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-29 07:56:42,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:42,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:56:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 07:56:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:42,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:42,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:42,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:56:42,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:42,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:42,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:42,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:42,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:56:42,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 07:56:42,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:42,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:56:42,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:56:42,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083997072] [2020-10-29 07:56:42,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:42,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:56:42,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806441576] [2020-10-29 07:56:42,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:56:42,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:42,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:56:42,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:56:42,997 INFO L87 Difference]: Start difference. First operand 4863 states and 5778 transitions. Second operand 5 states. [2020-10-29 07:56:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:49,223 INFO L93 Difference]: Finished difference Result 9419 states and 11277 transitions. [2020-10-29 07:56:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:56:49,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-29 07:56:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:49,263 INFO L225 Difference]: With dead ends: 9419 [2020-10-29 07:56:49,264 INFO L226 Difference]: Without dead ends: 4869 [2020-10-29 07:56:49,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:56:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-10-29 07:56:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4857. [2020-10-29 07:56:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4857 states. [2020-10-29 07:56:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 5662 transitions. [2020-10-29 07:56:49,406 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 5662 transitions. Word has length 335 [2020-10-29 07:56:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:49,407 INFO L481 AbstractCegarLoop]: Abstraction has 4857 states and 5662 transitions. [2020-10-29 07:56:49,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:56:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 5662 transitions. [2020-10-29 07:56:49,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-29 07:56:49,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:49,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:56:49,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:56:49,414 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1537929048, now seen corresponding path program 1 times [2020-10-29 07:56:49,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:49,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742225060] [2020-10-29 07:56:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:54,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:54,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-29 07:56:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:56:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4705 [2020-10-29 07:56:54,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:54,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:56:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:56:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-29 07:56:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:54,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:54,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:54,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:54,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:56:54,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:54,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:56:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:54,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:54,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:56:54,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-29 07:56:54,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:54,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:56:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:55,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:56:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:55,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:55,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:56:55,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 07:56:55,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:55,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:56:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:56:55,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 84 proven. 109 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:56:56,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742225060] [2020-10-29 07:56:56,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:56,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:56:56,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934442389] [2020-10-29 07:56:56,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:56:56,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:56,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:56:56,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:56:56,313 INFO L87 Difference]: Start difference. First operand 4857 states and 5662 transitions. Second operand 9 states. [2020-10-29 07:57:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:07,902 INFO L93 Difference]: Finished difference Result 11023 states and 12970 transitions. [2020-10-29 07:57:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:57:07,905 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 352 [2020-10-29 07:57:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:07,930 INFO L225 Difference]: With dead ends: 11023 [2020-10-29 07:57:07,930 INFO L226 Difference]: Without dead ends: 6785 [2020-10-29 07:57:07,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:57:07,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6785 states. [2020-10-29 07:57:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6785 to 6133. [2020-10-29 07:57:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6133 states. [2020-10-29 07:57:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6133 states to 6133 states and 7061 transitions. [2020-10-29 07:57:08,093 INFO L78 Accepts]: Start accepts. Automaton has 6133 states and 7061 transitions. Word has length 352 [2020-10-29 07:57:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:08,094 INFO L481 AbstractCegarLoop]: Abstraction has 6133 states and 7061 transitions. [2020-10-29 07:57:08,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:57:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6133 states and 7061 transitions. [2020-10-29 07:57:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-29 07:57:08,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:08,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:57:08,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:57:08,106 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:08,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:08,107 INFO L82 PathProgramCache]: Analyzing trace with hash -260069699, now seen corresponding path program 1 times [2020-10-29 07:57:08,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:08,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561691114] [2020-10-29 07:57:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:08,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:08,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:12,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:12,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-29 07:57:12,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:57:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4402 [2020-10-29 07:57:12,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:12,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:57:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:57:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 413 [2020-10-29 07:57:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:12,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:57:12,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:12,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:57:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:12,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:13,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:13,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:57:13,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 07:57:13,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:13,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:57:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:57:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:13,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:13,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 07:57:13,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:13,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 07:57:13,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:13,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:57:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:57:13,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 249 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:57:13,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561691114] [2020-10-29 07:57:13,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:13,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:57:13,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833644904] [2020-10-29 07:57:13,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:57:13,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:57:13,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:57:13,817 INFO L87 Difference]: Start difference. First operand 6133 states and 7061 transitions. Second operand 9 states. [2020-10-29 07:57:25,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:25,810 INFO L93 Difference]: Finished difference Result 12720 states and 15337 transitions. [2020-10-29 07:57:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:57:25,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 408 [2020-10-29 07:57:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:25,850 INFO L225 Difference]: With dead ends: 12720 [2020-10-29 07:57:25,851 INFO L226 Difference]: Without dead ends: 7534 [2020-10-29 07:57:25,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:57:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2020-10-29 07:57:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7088. [2020-10-29 07:57:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7088 states. [2020-10-29 07:57:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 8138 transitions. [2020-10-29 07:57:26,071 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 8138 transitions. Word has length 408 [2020-10-29 07:57:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:26,072 INFO L481 AbstractCegarLoop]: Abstraction has 7088 states and 8138 transitions. [2020-10-29 07:57:26,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:57:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 8138 transitions. [2020-10-29 07:57:26,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-29 07:57:26,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:26,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:57:26,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:57:26,081 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:26,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:26,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1723865934, now seen corresponding path program 1 times [2020-10-29 07:57:26,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:26,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325795342] [2020-10-29 07:57:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:31,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:31,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-29 07:57:31,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:57:31,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4878 [2020-10-29 07:57:31,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:31,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-29 07:57:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:57:31,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:31,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:31,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:31,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:31,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:57:31,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:31,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:31,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:31,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:31,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:57:31,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 07:57:31,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:31,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:57:31,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:31,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:57:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:31,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 07:57:31,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 07:57:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:31,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 07:57:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:57:32,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325795342] [2020-10-29 07:57:32,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:32,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:32,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550025481] [2020-10-29 07:57:32,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:32,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:32,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:32,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:32,095 INFO L87 Difference]: Start difference. First operand 7088 states and 8138 transitions. Second operand 7 states. [2020-10-29 07:57:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:40,435 INFO L93 Difference]: Finished difference Result 17408 states and 20553 transitions. [2020-10-29 07:57:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:57:40,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-29 07:57:40,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:40,474 INFO L225 Difference]: With dead ends: 17408 [2020-10-29 07:57:40,474 INFO L226 Difference]: Without dead ends: 10322 [2020-10-29 07:57:40,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2020-10-29 07:57:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 10267. [2020-10-29 07:57:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10267 states. [2020-10-29 07:57:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10267 states to 10267 states and 11681 transitions. [2020-10-29 07:57:40,743 INFO L78 Accepts]: Start accepts. Automaton has 10267 states and 11681 transitions. Word has length 431 [2020-10-29 07:57:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:40,744 INFO L481 AbstractCegarLoop]: Abstraction has 10267 states and 11681 transitions. [2020-10-29 07:57:40,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 10267 states and 11681 transitions. [2020-10-29 07:57:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-29 07:57:40,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:40,756 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:57:40,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:57:40,756 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:40,757 INFO L82 PathProgramCache]: Analyzing trace with hash -448129189, now seen corresponding path program 1 times [2020-10-29 07:57:40,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:40,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381479040] [2020-10-29 07:57:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:45,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:45,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-29 07:57:45,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:57:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 07:57:45,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:45,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:57:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:57:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:57:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:46,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:46,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:46,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:46,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:57:46,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:46,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:57:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:46,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:46,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:46,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:57:46,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 07:57:46,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:46,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:57:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:46,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:57:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:46,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:46,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:57:46,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:57:46,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:46,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 07:57:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-29 07:57:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:46,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:46,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:57:46,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:46,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:57:46,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:46,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 07:57:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 159 proven. 192 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-29 07:57:47,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381479040] [2020-10-29 07:57:47,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:47,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:47,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171171021] [2020-10-29 07:57:47,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:47,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:47,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:47,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:47,105 INFO L87 Difference]: Start difference. First operand 10267 states and 11681 transitions. Second operand 7 states. [2020-10-29 07:57:49,948 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:57:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:56,486 INFO L93 Difference]: Finished difference Result 20299 states and 23190 transitions. [2020-10-29 07:57:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:57:56,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 463 [2020-10-29 07:57:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:56,522 INFO L225 Difference]: With dead ends: 20299 [2020-10-29 07:57:56,522 INFO L226 Difference]: Without dead ends: 10347 [2020-10-29 07:57:56,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:57:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10347 states. [2020-10-29 07:57:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10347 to 10274. [2020-10-29 07:57:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10274 states. [2020-10-29 07:57:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10274 states to 10274 states and 11673 transitions. [2020-10-29 07:57:56,787 INFO L78 Accepts]: Start accepts. Automaton has 10274 states and 11673 transitions. Word has length 463 [2020-10-29 07:57:56,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:56,788 INFO L481 AbstractCegarLoop]: Abstraction has 10274 states and 11673 transitions. [2020-10-29 07:57:56,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10274 states and 11673 transitions. [2020-10-29 07:57:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-29 07:57:56,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:56,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:57:56,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:57:56,799 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1229789947, now seen corresponding path program 1 times [2020-10-29 07:57:56,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:56,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973859948] [2020-10-29 07:57:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:58,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:59,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:59,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-29 07:57:59,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:57:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2447 [2020-10-29 07:57:59,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:59,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:57:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:57:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:59,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:59,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:59,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:59,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:57:59,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 07:57:59,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:59,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:57:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:59,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:57:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:59,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 07:58:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:58:00,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973859948] [2020-10-29 07:58:00,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:00,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:58:00,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333885420] [2020-10-29 07:58:00,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:58:00,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:00,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:58:00,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:58:00,554 INFO L87 Difference]: Start difference. First operand 10274 states and 11673 transitions. Second operand 8 states. [2020-10-29 07:58:00,703 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:58:12,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:58:12,729 INFO L93 Difference]: Finished difference Result 26799 states and 31635 transitions. [2020-10-29 07:58:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:58:12,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 505 [2020-10-29 07:58:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:58:12,776 INFO L225 Difference]: With dead ends: 26799 [2020-10-29 07:58:12,776 INFO L226 Difference]: Without dead ends: 16218 [2020-10-29 07:58:12,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:58:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16218 states. [2020-10-29 07:58:13,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16218 to 16194. [2020-10-29 07:58:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16194 states. [2020-10-29 07:58:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16194 states to 16194 states and 18587 transitions. [2020-10-29 07:58:13,103 INFO L78 Accepts]: Start accepts. Automaton has 16194 states and 18587 transitions. Word has length 505 [2020-10-29 07:58:13,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:58:13,104 INFO L481 AbstractCegarLoop]: Abstraction has 16194 states and 18587 transitions. [2020-10-29 07:58:13,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:58:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 16194 states and 18587 transitions. [2020-10-29 07:58:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-29 07:58:13,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:58:13,114 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:58:13,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:58:13,114 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:58:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:58:13,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2054952540, now seen corresponding path program 1 times [2020-10-29 07:58:13,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:58:13,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886285347] [2020-10-29 07:58:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:58:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:13,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:14,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-29 07:58:17,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:58:17,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3795 [2020-10-29 07:58:17,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:58:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:58:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:58:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:58:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:58:17,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:58:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:58:17,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 07:58:17,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:58:17,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:58:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:17,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:17,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:17,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:58:17,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:17,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:58:17,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:17,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 07:58:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 271 proven. 90 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 07:58:18,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886285347] [2020-10-29 07:58:18,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:18,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:58:18,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120159213] [2020-10-29 07:58:18,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:58:18,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:18,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:58:18,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:58:18,258 INFO L87 Difference]: Start difference. First operand 16194 states and 18587 transitions. Second operand 7 states. [2020-10-29 07:58:22,535 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:58:29,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:58:29,992 INFO L93 Difference]: Finished difference Result 33389 states and 38464 transitions. [2020-10-29 07:58:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:58:29,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-29 07:58:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:58:30,044 INFO L225 Difference]: With dead ends: 33389 [2020-10-29 07:58:30,045 INFO L226 Difference]: Without dead ends: 17819 [2020-10-29 07:58:30,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:58:30,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17819 states. [2020-10-29 07:58:30,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17819 to 17781. [2020-10-29 07:58:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17781 states. [2020-10-29 07:58:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17781 states to 17781 states and 20295 transitions. [2020-10-29 07:58:30,460 INFO L78 Accepts]: Start accepts. Automaton has 17781 states and 20295 transitions. Word has length 537 [2020-10-29 07:58:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:58:30,461 INFO L481 AbstractCegarLoop]: Abstraction has 17781 states and 20295 transitions. [2020-10-29 07:58:30,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:58:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 17781 states and 20295 transitions. [2020-10-29 07:58:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-29 07:58:30,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:58:30,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:58:30,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:58:30,469 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:58:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:58:30,470 INFO L82 PathProgramCache]: Analyzing trace with hash -211073636, now seen corresponding path program 1 times [2020-10-29 07:58:30,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:58:30,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663232863] [2020-10-29 07:58:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:58:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:31,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:58:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 07:58:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:32,097 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:58:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:58:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:58:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:58:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:58:32,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:58:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:58:32,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-29 07:58:32,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:58:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:58:32,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:58:32,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:58:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:32,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:32,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:58:32,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 07:58:32,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:32,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:58:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:58:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:33,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:33,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:33,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:58:33,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:58:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:58:33,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:33,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:58:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:58:33,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 284 proven. 54 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:58:33,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663232863] [2020-10-29 07:58:33,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:33,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:58:33,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943574465] [2020-10-29 07:58:33,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:58:33,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:33,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:58:33,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:58:33,370 INFO L87 Difference]: Start difference. First operand 17781 states and 20295 transitions. Second operand 6 states.